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CDM-570/L and CDD-56X

1. 2 26 Figure 2 20 Vipersat dialog Hub Unit 2 27 Figure 2 21 STDMA dialog Hub Unit 2 31 Figure 2 22 STDMA dialog Remote Unit 2 32 Figure 2 23 Bandwidth Allocation Method 2 33 Figure 2 24 STDMA Remote List ECM 2 37 Figure 2 25 Remote Entry dialog ECM 2 38 Figure 2 26 Automatic Remote Removal 2 39 Figure 2 27 Switching dialog 2 40 Figure 2 28 Application Switch Detection Remote Wit eran i ve eine ose 2 41 Figure 2 29 Type of Service Switching List 2 43 Figure 2 30 Type of Service Entry 2 44 Figure 2 31 Load Switching Remote Unit 2 45 Figure 2 32 Hitless Switching dialog 2 48 Figure 2 33 DPC dialog 2 50 Figure 2 34 Home State Enable STDMA 2 52 Figure 2 35 Home State dialog Modulator 2 52 Figure 2 36 Admin dialog 2 54 Figure 2 37 Authentication dialog 2 55 Figure 2 38 Admin dialog Enabled 2 55 Figure 2 39 Access dialog 2 56 Figure 2 40 SNMP dialog 2 57 Figure 2 41 SMTP Tab 2 59 LoF List of Figures Figure 2 42 Compression dialog 2 61 Figure 2 43 Triple DES dialog 2 63 Figure 2 44 Modify DES Key dialog 2 64 Figure 2 45 Maintenance dialog 2 65 iii This Page is Intentionally Blank CDM 570 L CDD 56X Parameter Editor User Guide Chapter 2 Tables Table 2 1 DiffServ Code Points DSCP 2 19
2. 2 60 Compression 2 60 Tx Header Compression 2 60 Tx Payload Compression 2 61 Triple DESS we sh io EO a 2 62 Maintenance 2 65 Upgrade Image 2 65 Base Modem Image 2 66 Enable Redundancy 2 66 Codecast Address 2 66 EventLogging 2 66 Automatically Save PARAM After CONFIG Change 2 66 Appendix A Glossary un 2 recasting bsk ats uct A 1 Index Kaa Y Tuya ce aa Index 1 CDM 570 L CDD 56X Parameter Editor User Guide Chapter 2 Figures Figure 2 1 Tree Menus Vipersat Modes 2 3 Figure 2 2 Alert Parameter Conflict 2 4 Figure 2 3 Network dialog 2 5 Figure 2 4 HDLC Addressing Mode Menu 2 6 Figure 2 5 Routing dialog 2 8 Figure 2 6 Add Route dialog 2 8 Figure 2 7 Multicast Network Address 2 9 Figure 2 8 Modify Route dialog 2 10 Figure 2 9 QoS dialog Max Priority Mode 2 11 Figure 2 10 Add Quality Of Service Rule dialog 2 13 Figure 2 11 Add QoS Rule Max Priority Mode 2 15 Figure 2 12 Protocol Drop Down Menu 2 16 Figure 2 13 QoS Tab Diff Serv Mode 2 18 Figure 2 14 Modify DiffServ Rule 2 19 Figure 2 15 IGMP dialog 2 21 Figure 2 16 IGMP Server dialog 2 22 Figure 2 17 IGMP Client dialog 2 23 Figure 2 18 Managed Switch dialog 2 25 Figure 2 19 VLAN dialog
3. A 9 VFS VLoad VMS VNO VoIP VOS Wizard WRED A 10 Vipersat File Streamer A file transfer application utilizing UDP and a proprie tary Streamload protocol to transmit data across the Vipersat network Vipersat Load Utility A comprehensive tool for managing and distributing application configuration and identification information for the modem routers in Vipersat satellite networks Vipersat Management System A comprehensive M amp C tool providing rapid and responsive control of Vipersat satellite networks Comprised of client and server components Virtual Network Operator A provider of management services that does not own the telecommunication infrastructure The Comtech Vipersat Network Products VNO solution allows satellite space segment operators to selectively expose resources in their satellite network to other service providers customers or partners Voice over IP The routing of voice communications over the Internet or through any IP based network Vipersat Object Service The main software service of the VMS application W A specialized program which performs a specific function such as installing an application Weighted Random Early Detection A queue management algorithm with congestion avoidance capabilities and packet classification QoS providing prioritization CDM 570 L CDD 56X Parameter Editor User Guide access 2 55 access client 2 55 access
4. Application Read Write Community private TOS List Load Trap Community public Hitless DPC System Contact Home State Modulator SystemName _ Demodulator x Admin System Location Access SMTP Compression Triple DES Maintenance Cancel Figure 2 40 SNMP dialog Enable SNMP for Modem Configuration Selecting the Enable SNMP for Modem Config box shown in figure 2 40 enables SNMP on this modem router function if other software exists on the network which uses this information Q Tip The VMS does not use SNMP management messages Only enable this Enable Authentication Trap Selecting the Enable Authentication Trap box determines whether a MIB2 authentication trap will be sent when a protocol data unit PDU with an invalid community string is encountered A community string is invalid when it does not match the Admin the Read Write or the Read Only community strings Trap Version Select either SNMP version 1 or SNMP version 2 using the radio button in the Trap Version box Chapter 2 Using Parameter Editor 2 57 Admin 2 58 N Trap Destination Addresses Enter the trap destination IP addresses in the Trap Destination Address dialog boxes These are the IP addresses where all traps notifications will be sent If a network management application is running in the network it should be config ured to receive traps and its IP address should be entered here Note The VMS does not
5. M Enable Load Switching SCPC Step Up Threshold 95 SCPC Step Down Threshold 20 SCPC Step Delay 10 seconds SCPC Step Up Excess x Cancel Figure 2 31 Load Switching Remote Unit 2 45 Vipersat 2 46 N Note Load switching must be enabled on all CDM 570 570Ls in a network in order for the VMS to utilize load switching when dynamically optimizing network performance as load conditions change If the application rate is less than the load the VMS will not switch It will however set up SHOD Single Hop on Demand if the application requires it Application switching by the VMS such as Voice and or Video is not affected by this setting However using Load switching for real time applications is not recommended The appearance of parameters for Load Switching will differ depending on whether the unit is configured as a Hub or as a Remote SCPC Step Up Threshold Appears for Remote modems only The SCPC Step Up Threshold field establishes the percentage of bandwidth use that will trigger a switch up from the present SCPC rate to a higher rate to ensure that there is sufficent bandwidth available for current conditions Valid range is from 65 to 100 Yo Typically the default value will be acceptable but this value can be changed to accommodate a unigue network configuration or application Note that this value must be greater than the value specified for the SCPC Step Down Thresh old see below SC
6. EF DATA mmIIlli Vipersat CDM 570 L CDD 56X Parameter Editor User Guide Network Routing IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance CDM5 0L ParamEdit CDM5XX 5 4 dll Quality of Service M EnableQoS V Enable SAR Add Clear Mode Rule Max Priority C Rule Min Max C Diff Serv C VLAN Protocol Bandwidth D ALL o 99999 9 0 IP 079333 1 Source Address xx Jx 10 73 130 10 32 Protocol All IP X 10 1 v Enable WRED Enable Filtering Cancel Subnet Bits All i 32 32 fn Maximum 50 Mbps Data Rate 1 28 Mps Timeout 5 seconds Part Number MN 0000038 Revision 1 Vipersat CDM 570 L CDD 56X Parameter Editor User Guide Part Number ules sei Document Revision February 6 2009 COMTECH EF DATA VIPERSAT Network Products Group 3215 Skyway Court Fremont CA 94539 USA Phone 510 252 1462 Fax 510 252 1695 www comtechefdata com Part Number MN 0000038 Revision 1 Software Version 1 5 4 55 2009 by Comtech EF Data Inc All rights reserved No part of this document may be copied or reproduced by any means without prior written permission of Comtech EF Data Comtech reserves the right to revise this publication at any tim
7. 2 31 Allocation Method 2 32 Group ID 00 2 34 Slot Data Length 2 35 Stats Collection 2 35 Burst Map Rate 2 36 Preamble 2 36 Guard Band 2 36 Remote List 2 37 Automatic Remote Removal 2 38 Switching 00 4 2 39 Application Switch Detection 2 40 Load Switching 2 45 Hitless Switching 2 48 DPC MA eek Roe ee Eek Gi 2 49 Enable Dynamic Power Control 2 50 Minimum Power 2 50 Maximum Power 2 51 TargetEb NO 2 51 Speed UpEb NO 2 51 Target Range For No Power Adjust 2 51 Target IP Address 2 51 Home State 2 52 AAMI 40 5 tot hs Gora ee Oats bed 2 54 User Names and Passwords 2 54 Enable Ping Reply 2 55 Enable Telnet 2 55 il Telnet Inactivity Timeout 2 55 ACCESS civ ety hess ee we ae ere Sg he 2 55 SNMP wa paron uzanan sah guau eo a a 2 56 Enable SNMP for Modem Configuration 2 57 Enable Authentication Trap 2 57 TrapVersion 2 57 Trap Destination Addresses 2 58 Community Strings 2 58 System Contact 2 58 System Name 2 58 System Location 2 59 SMTP 0 ase Bop Se ree Gee Bones 2 59 Server IP Address 2 60 Domain ie e a tere eve Auge d waat 2 60 Destination Name
8. DLL Files AA Be 2 1 Updating DLL Files 2 2 Configuration Changes 2 2 Parameter EditorTreeMenu 2 3 Configuration Alert 2 4 Network 2 4 yao 2 a ante eee SQ AE 2 5 Ethernet 2 5 HDLC Addressing Mode 2 6 Enable All Downlink Multicast 2 7 DHCP Server IP Address 2 7 Dynamic BufferLatency 2 7 ROUNO 225 ZP n A AS Se SE As 2 7 Adding a Route 2 7 Modifyinga Route 2 10 QOS Sea el wee eee Ge bh ba 2 10 Enable Quality of Service 2 11 EnableSAR 2 12 Rules Table 2 12 Developing QoS Rules in a VMS Network 2 12 Defining QoS Rules 2 12 Rule Max Priority amp Rule Min Max Modes 2 14 Diff Serv QoS Mode 2 18 IGMP nek ee See ee ea kuwa 2 21 ToC Table of Contents Modem as IGMP Server 2 22 Modem as IGMP Client 2 23 Managed Switch 2 25 MEAN et 22 oo cet oe 2 tind usus p 2 25 VIDerSat ese a ee puyu ss Ka 2 27 Role Designation 2 27 EnableVFS 2 28 Enable Heart Beat 2 28 EnableSOTM 2 28 Carrier Inhibit Timer 2 29 Network ID 2 29 Database Version 2 29 NodeName 2 30 Multicast Management Address 2 30 STOMA z a 4 4b eae bb Bee 2 30 EnableSTDMA 2 30 Enable Power Hunt 2 30 Enable Low Data Rate Fast Acquisition
9. Table 2 2 Expedited and Assured Forwarding DSGP ics uu puq ena Pu tees 2 20 Table 2 3 Vipersat unit Network Functions and Roles tas hae eee ed dal kott 2 28 LoT List of Tables vi This Page is Intentionally Blank CDM 570 L CDD 56X Parameter Editor User Guide GENERAL How to Use This Manual This manual documents the features and functions of the Vipersat Parameter Editor software user interface and guides the user in how to use this product for configuring a Comtech modem router to operate in a Vipersat satellite network Workstation users as well as network administrators and operators responsible for the configuration and maintenance of the Vipersat satellite network are the intended audience for this document Manual Organization This User Guide is organized into the following sections Chapter 1 General Contains Parameter Editor product description customer support information and manual conventions and references Chapter 2 Using Parameter Editor Covers the Parameter Editor dialogs and the associated fields that are used to configure the CDM 570 570L and the CDD 56X series modems Appendix A Glossary A glossary of terms that pertain to Vipersat satellite network technology Chapter 1 General 1 1 How to Use This Manual Conventions and References The following conventions are utilized in this manual to assist the reader text ZI Note Provides important inform
10. 15 Index 1 quality of service 2 11 redundancy 2 66 segmentation reassembly 2 12 SNMP for modem config 2 57 SOTM 2 28 STDMA 2 30 telnet 2 55 ToS switching 2 43 tx header compression 2 60 VFS 2 28 WRED 2 16 encryption 3xDES 2 10 entry channel 2 33 FAST code BFAT 2 32 compression 2 60 IGMP 2 21 QoS 2 10 Vipersat 2 27 features 1 3 fixed mode 2 32 2 34 general 1 1 GIR 2 33 2 34 glossary 1 1 A 1 guaranteed information rate 2 33 2 34 H header compression 2 10 hitless switching 2 48 demodulator delay 2 49 lock times 2 49 modulator delay 2 48 home 2 52 how to use this manual 1 1 IGMP 2 21 enable 2 21 maximum response time 2 22 Index 2 missed responses 2 22 modem as client 2 21 modem as server 2 21 queries 2 23 query period 2 22 router alert option 2 24 unsolicited report interval 2 24 version 2 24 load switching 2 45 enable 2 45 percent allocation 2 47 SCPC step delay 2 46 SCPC step down threshold 2 46 SCPC step up excess 2 47 SCPC step up threshold 2 46 STDMA slot capacity 2 47 STDMA switch delay 2 47 M maintenance 2 65 base modem image 2 66 codecast address 2 66 enable redundancy 2 66 event logging 2 66 upgrade image 2 65 managed switch 2 25 managed switch mode 2 6 multicast address 2 9 2 66 multicast management address 2 30 N network 2 5 dynamic buffer latency 2 7 ethernet 2 5 HDLC addressing mode 2
11. 2 Using Parameter Editor 2 7 Network CDM570L ParamEdit CDM5XX 5 4 dll Network 7 Routing Static Routes dos Route Name Network Address Nethop M IGMP 0 0 0 0 0 10 75 0 1 Server Client Managed Switch VLAN E Vipersat STDMA Remote List Remote Removal Switching Application Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Add Route 1 Route Name r Destination Port DFG Ethernet Satellite Network Address Subnet Bits HDLC Address o o 0 0 fo Per Route Features Next Hop Address 10 75 Os Header Compression ii EA Payload Compression SAT gt LAN I LAN gt SAT I 3xDES SS 3 DES Key clear Caca L Figure 2 6 Add Route dialog Destination Port The Destination Port can be either Ethernet LAN or Satellite WAN Note that if the Ethernet radio button is selected the Next Hop Address box becomes active If the Satellite radio button is selected the Next Hop Address 2 8 CDM 570 L CDD 56X Parameter Editor User Guide Network box becomes inactive and the Next Hop table entry figure 2 5 will show as NONE Network Address Enter the destination network IP address for this route to be added to the Viper sat unit s routing table Subnet Bits Enter the number of subnet bits associated with the network address HDLC Address This parameter is not supported in Vip
12. 42 voice 2 42 enable automatic switching 2 40 load switching 2 45 hitless switching 2 48 load 2 45 telnet enable 2 55 timeout 2 55 ToS 2 43 code 2 44 enable detection 2 43 Index 3 switch rate 2 44 switch type 2 44 timeout 2 44 type of service 2 43 U using parameter editor 1 1 V Vipersat 2 27 carrier inhibit timer 2 29 database version 2 29 enable heart beat 2 28 Index 4 SOTM 2 28 VES 2 28 multicast management address 2 30 network ID 2 29 node name 2 30 role 2 27 expansion 2 27 hub 2 27 remote 2 27 VLoad 2 1 user guide 1 2 1 3 VMS 2 1 user guide 1 2 1 3 2 29 2 39 CDM 570 L CDD 56X Parameter Editor User Guide
13. 570 L CDD 56X Parameter Editor User Guide Network Network The network interface parameters are set in the Network dialog figure 2 3 CDM570L ParamEdit CDM5XX 5 4 dll Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Remote List Remote Removal Switching Application Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Ethernet Network Ethernet Address Subnet Bits IPAddess 10 75 0 10 JA MAC Address 00 06 80 00 0C 76 Speed Mode Auto Auto Neg Done For 100 Full Mode Link UP HDLC Addressing Mode Vipersat Addressing Ke Enable All Downlink Multicast DHCP Server IP Address 0 0 0 0 Dynamic Buffer Latency 5 sec Cancel Figure 2 3 Network dialog The following Ethernet parameters can be configured for this modem unit IP Address Enter the IP address that is assigned to this modem unit Subnet Bits Enter the number of subnet bits associated with this modem unit s IP address MAC Address The modem unit s MAC address is read only This parameter can not be modi fied by the user Chapter 2 Using Parameter Editor 2 5 Network N A Speed Mode Select the speed and mode for the connection from the options on the drop down menu Note Auto mode is recommended unless the operator is absolutely certain the device being connected does not have a
14. Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 43 Triple DES dialog Using Keyl as an example consider the first section as Key lA the second as Key1B and the third as Key1C Data is first encrypted with Key1A and then decrypted with Key1B and again encrypted with Key1C So if a user specifies all of the three Keys the same like 48 1 s OR all the characters in DES key the same the cumulative effect of 3xDES is just a single DES when data is first encrypted with KeylA and decrypted with Key1B we get back the original data and then when encrypted with Key1C results in a total effect of single DES key Because of this the user is required to enter unique 64 bit keys If any 2 sections of the Key match the entry will not be accepted and the alert message Each Segment Must Be Unique will appear Also the least significant bit of each byte in a 3xDES key is reserved for the DES algorithm for parity Entries of 1 3 5 7 9 B D or F will have all the corresponding bit positions masked So a Key entry of 1111111133333333 5555555577777777 99999999BBBBBBBB becomes 1010101032323232 5454545476767676 98989898BABABABA Chapter 2 Using Parameter Editor 2 63 Admin To edit a DES key select the desired key and click the Modify button Use the up down arrow buttons to move the selected key to a different position Tip Double click on the key entry to be modified and the Modify Key dialog will be disp
15. Networks representative Note When the Low Data Rate Fast Acquisition feature is enabled the Pream ble length is set automatically for the unit Guard Band Active for Hub modems only The Guard Band field defines the length of the guardband in milliseconds for the remotes in the group The Slot Guardband is the amount of time between the point when one remote completes transmitting data and the point when the next CDM 570 L CDD 56X Parameter Editor User Guide Vipersat remote in the cycle begins transmitting This delay prevents the remote from overrunning the next terminal in the cycle The setting for this parameter should be obtained using the Vipersat STDMA Calculator Remote List Appears for Hub modems only Clicking the Remote List menu item below STDMA brings up the STDMA Remote List dialog shown in figure 2 24 CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP 10 75 128 1 512Kbps 0 Server 10 75 129 1 256Kbps 64 Client 10 75 130 1 1 Mbps 75 Managed Switch VLAN Vipersat STDMA Remote List Remote Removal Switching Application Load Hitless DPC Home State Modulator Demodulator x il Sort Admin Insert Modify H Enable Access Remove Disable Clear SNMP SMTP Compression Triple DES Cancel Maintenance Figure 2 24 STDMA Remote List ECM Use the buttons at the bottom of the dialog to perform the following actions Add Insert Clickin
16. QoS Rules All traffic will be classified into the first QoS Rule that is a match or fall into the Default Rule The most specific QoS Rule will always be first For example a QoS Rule that identifies a Source and Destination IP Address will be assigned ahead of a rule that just defines RTP protocol QoS Rules that have the same amount of variables defined are sorted as follows 1 By Protocol Protocol Priority a a j gt w m oo VOCE VDEO RTPS RTP FTP HTTP TELN SMTP SNMP SQL Voice Real Time Protocol Video Real Time Protocol Real Time Protocol Signalling All Real Time Protocols File Transfer Protocol Hypertext Transfer Protocol Telnet Protocol Simple Mail Transfer Protocol Simple Network Management Protocol Structured Query Language Protocol Chapter 2 Using Parameter Editor 2 13 Network 2 14 k ORCL ORACLE Protocol L CTRX CITRIX Protocol m SAP Service Announcement Protocol n UDP User Datagram Protocol o TCP Transmission Control Protocol p ICMP Internet Control Message Protocol q IP All Internet Protocol r N IP All Non Internet Protocol 2 By Source IP Address or Subnet 3 By Destination IP Address or Subnet 4 By Source Port lowest port number first 5 By Destination Port lowest port number first The modem router will sort each QoS rule as they are added and the QoS
17. Rules Table will be updated to reflect the order with which rules are matched Rule Max Priority amp Rule Min Max Modes The Rule Max Priority mode and the Rule Min Max mode are very similar in configuration As the names imply Rule Max Priority is primarily based on the Priority parameter and the Maximum Bandwidth parameter the Minimum Bandwidth parameter is not active while Rule Min Max is primarily based on the Minimum and Maximum Bandwidth parameters the Priority parameter is not active Select the Rule mode radio button in the QoS dialog then click on the Add button to open the Add QoS Rule dialog Alternatively select an existing rule from the table and click on the Modify button to open the modify version of the same dialog Note that there are All check boxes to the right of the IP addresses Ports and Bandwidth fields When an All box is checked any range of values is accepted and the specific parameter fields are inactivated Unchecking an All box as shown in figure 2 11 activates the fields for that parameter and allows the values to be edited CDM 570 L CDD 56X Parameter Editor User Guide Network Add Quality of Service Rule 1 Protocol All IP v V Enable WRED Priority 1 Enable Filtering Cancel Address Subnet Bits Source IP 10 73 130 10 32 Destination IP 10 73 0 12 32 Minimum Maximum Source Port 0 65535 Destination Port 0 65535 Bandwidth 99 999 Mbps V QoS S
18. a Prece dence of 9 Chapter 2 Using Parameter Editor 2 19 Network NOTE NI Expedited Forwarding and Assured Forwarding DSCP Another implementation of DiffServ uses all 6 bits of the DSCP to define Expe dited and Assured Forwarding as shown in table 2 2 Table 2 2 Expedited and Assured Forwarding DSCP Modem Router DiffServ Type Class Selector DSCP Priority Expedited Forwarding Precedence 1 101 110 1 Assured Forwarding Class 1 Precedence 8 001 xx0 8 Assured Forwarding Class 2 Precedence 8 010 xx0 8 Assured Forwarding Class 3 Precedence 8 011 xx0 8 Assured Forwarding Class 4 Precedence 8 100 xx0 8 Expedited Forwarding EF DSCP This defines premium service and is recommended for real time traffic applica tions such as VoIP and video conferencing Assured Forwarding AF DSCP This defines four service levels and also uses the last three bits of the DSCP to define the Drop Precedence Low Medium or High The Drop Precedence determines which packets will most likely be dropped during periods of over congestion similar to WRED As a result each of the four AF service levels also have three Drop Precedence levels for which the modem router provides 12 separate queues Minimum Bandwidth AF only The minimum bandwidth specification can be assigned to a flow that allows a committed information rate CIR to be applied to user defined classes of traf fic or the default of no minimum bandwidth can be s
19. capable of changing the bandwidth used but the change is determined entirely by the type of application being requested while ignoring load requirements 2 40 CDM 570 L CDD 56X Parameter Editor User Guide Vipersat CDM570L ParamEdit CDM5XX 5 4 dll Network Routing Application Switch Detection QoS IGMP Server Enable Video Switching Client Managed Switch Enable Voice Switching VLAN Vipersat N ji ne STDMA Enable Quality of Service Switching Switching Enable Channel Table Signalling TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Enable Type of Service Switching Figure 2 28 Application Switch Detection Remote Unit In a system configured for application switching the remote site CDM 570 570L looks for a packet in the data stream coming from the LAN that is config ured using the H 323 stack protocol and contains an H 225 signaling protocol VMS also recognizes and supports SIP signaling The packet is first examined to determine the port number then from the allo cated port ranges determines the type of application being sent The CDM 570 570L sends a switch request to the VMS requesting a carrier for the application type Each application type will have been assigned a bandwidth allocation when the policy for the remote site is established A voice application for example might have had the bandwid
20. cies which have been pre configured in the VMS For example in a non encrypted network if a voice application service connec tion is started the CDM 570 570L s classifier analyzes signaling and data protocols H 323 SIP amp Data RTP being routed through the modem After CDM 570 L CDD 56X Parameter Editor User Guide NOTE N NOTE NI Chapter 2 Using Parameter Editor Vipersat connection detection the process waits for data RTP Data is normally sent after the receiving party answers which then triggers the system to process an ASR Note ToS switching differs from other application switching in that a ToS switch passes a data rate to the VMS Using the ToS classification the detection function allows application based switching in encrypted networks where the signaling protocols are encrypted or effectively hidden Note Load switching by the VMS is not affected by enabling ToS detection Load Switching Load switching allows SCPC switching to occur to meet bandwidth require ments in response to changing network traffic loads Use the Enable Load Switching check box to enable disable this feature CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Remote Load Switching
21. use SNMP trapped messages do not enter the VMS server address in this field Community Strings The modem router uses community strings as a password scheme that provides authentication before gaining access to the agent s MIBs In SNMP v1 v2c the community string is sent un encrypted in the SNMP packets Caution The network administrator must ensure that SNMP packets only travel over a secure and private network if security is a concern A packet sniffer can easily obtain the community string by viewing the SNMP traffic on the network The community strings are entered into the modem router using the fields shown in figure 2 40 and are used to authenticate users and determine access privileges to the SNMP agent The user defines three Community Strings for SNMP access Read Only Community default public GET community string that allows GET operations to all portions of the IP Module Controller and modem MIBs Read Write Community default private SET community string that allows SET operations to all portions of the IP Module Controller and modem MIBs Trap Community default public Community string that will be set in the Community field of all outgoing traps This field on the trap PDU may be checked by the network manager application to determine if the trap came from a trusted agent System Contact Enter user defined SNMP contact information in this field System Name Enter use
22. value entered in the Stats Collection field defines the period of time in seconds over which the CDM 570 570L will collect statistics A longer time will average out peak conditions a shorter time will shorten VMS reaction time to changing network conditions Burst Map Rate Active for Hub in Fixed or Dynamic Slot only The Burst Map Rate field specifies the number of spin cycles that will occur prior to each broadcast of the burst map by the burst controller to the remotes One cycle is the amount of time it takes for all remotes in a group to burst on the common channel The burst map provides each remote with its allocated band width and position in the cycle For Dynamic Cycle GIR and Entry Channel modes the number of cycles is automatically set to one in order to ensure optimum performance for these Hub types Preamble Active for Hub modems only The Preamble field specifies the preamble duration in milliseconds for the remotes in the group This is the period between when the remote begins to transmit sends an ACK to the Hub and when the first data packet is sent This allows time for signal lock to occur before data is sent thus preventing data loss Higher data rates allow for a shorter preamble since it is easier to achieve signal lock Tip Refer to the Viper Calculator for determining preamble length values to enter at the command prompt For a copy of the latest Viper Calculator contact your Comtech Vipersat
23. 6 P parameter editor features 1 3 general 1 1 using 1 1 payload compression 2 10 CDM 570 L CDD 56X Parameter Editor User Guide preamble duration 2 36 product description 1 3 Q QoS 2 10 diff serv 2 18 DSCP 2 19 enable filtering 2 17 quality of service 2 11 segmentation reassembly 2 12 WRED 2 16 mode 2 11 priority 2 16 protocol 2 15 rules 2 12 switching 2 15 quality of service 2 10 R routing 2 7 add route 2 7 destination port 2 8 modify route 2 10 multicast 2 9 next hop 2 9 per route features 2 10 3xDES 2 10 header compression 2 10 payload compression 2 10 S saving changes 2 2 simple mail transfer protocol 2 59 simple network management protocol 2 56 SMTP 2 59 destination name 2 60 domain 2 60 server IP address 2 60 SNMP 2 56 community strings 2 58 enable authentication trap 2 57 SNMP for modem config 2 57 trap destination address 2 58 version 2 57 static route adding 2 7 STDMA 2 30 allocation method 2 32 automatic remote removal 2 38 burst map rate 2 36 enable low data rate fast acguisition 2 31 power hunt 2 30 STDMA 2 30 group ID 2 34 guard band 2 36 mode dynamic cycle 2 32 2 33 dynamic slot 2 32 2 33 entry channel 2 32 2 33 fixed 2 32 2 34 GIR 2 32 2 34 preamble 2 36 remote list 2 37 slot data length 2 35 stats collection 2 35 switching 2 39 application 2 40 quality of service 2 42 type of service 2 43 video 2
24. DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Quality of Service MV EnableQoS V Enable SAR Add Clear Mode Rule Max Priority C Rule Min Max C Diff Serv VLAN Protocol Bandwidth Priority Source Address Des D ALL o g9999 9 IP 0299999 1 xx Jx 10 73 130 10 32 10 Cancel Figure 2 9 QoS dialog Max Priority Mode Enable Quality of Service Selecting the Enable Quality of Service box enables QoS on this modem router Chapter 2 Using Parameter Editor Network 2 12 Enable SAR Packet Segmentation and Reassembly SAR can be enabled for QoS With this feature packets are made smaller to speed them through the network and because of specified packet size restrictions for a given path SAR is an adaptive process it will trigger only if the packet latency exceeds the threshold value default is 20 msec Latency value is calculated based on the satellite transmission bandwidth The minimum segment size is limited to 480 bytes excluding satellite HDLC header information in order to avoid satel lite overhead and consumption of CPU cycles Rules Table The Rules table appears in the lower portion of the QoS dialog Just above the table is a button set that acts on the table and consists of the Add Remove Modify Up Down Arrow and Clear buttons When an existing rule is selected that rule can be repositioned i
25. L has one TX Encryption sub tab and one Rx Decryption sub tab while a CDD 564 564L has no Tx Encryption sub tab but has four Rx Decryption sub tabs Thus the DES tab can have sub tabs for Tx Encryption Keys Rx Decryption Keys The following discussion applies to the keys on both types of sub tabs A 24 Byte 192 bit 3xDES key is actually a combination of 3 single DES keys of 8 Bytes 64 bits The DES tab displays each key with spaces separating the key into 3 sections In figure 2 43 the Transmit Keys are displayed as 2222222222222222 4444444444444444 6666666666666666 Note The sequence 6666666666666666 does not fully show in the window use the scroll bar to make it visible CDM 570 L CDD 56X Parameter Editor User Guide CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Encryption Ta Rat Keyl Key2 Key3 Kep4 Ke5 Key6 Key Key8 2222222222222222 2222222222222222 2222222222222222 2222222222222222 2222222222222222 2222222222222222 2222222222222222 2222222222222222 4444444444444444 4444444444444444 4444444444444444 4444444444444444 4444444444444444 4444444444444444 4444444444444444 4444444444444444 6666666 6666666 6666666 6666666 6666666 6665666 6666666 6666666 gt Admin Load lt Hitless DPC Modify Home State pec Modulator Demodulator Admin
26. Length fields specify the data length in milliseconds for each of the remotes in the STDMA group and represents the amount of data that can be transmitted or received in one spin of the STDMA cycle This is the amount of time that the remote is provided in the cycle to send data Depending on the Allocation Method that is chosen for the Hub STDMA controller the appearance of this parameter will vary Fixed Slot Length Dynamic Slot Slot Minimum Slot Nominal Dynamic Cycle Slot Minimum Slot Maximum GIR Slot Minimum Entry Channel Slot Minimum Slot Maximum Stats Collection Active for Hub modems only The burst controller monitors statistics in the received ACK from each remote The statistics report the fill status of the STDMA buffers The burst controller builds a table of the group and calculates the relative buffer fill for each remote It then calculates the length of the data slot for each remote based on the Mini mum Slot size plus a percentage of the available bandwidth Idle remotes would receive a data slot equal to the Minimum Slot size In the Dynamic Slot mode the dynamic range of STDMA is a function of the difference between the Nominal Slot size and the Minimum Slot size parame ters The speed with which STDMA reacts to changes in dynamic load is a func tion of the Stats Collection parameter and the Burst Map Rate parameter Chapter 2 Using Parameter Editor 2 35 Vipersat The
27. Mbps 99 999 Mbps Cancel Figure 2 13 QoS Tab Diff Serv Mode Rules can not be added removed or cleared To modify the bandwidth settings for a rule select the rule and click on the Modify button Uncheck the All box to edit the Bandwidth settings as shown in figure 2 14 2 18 CDM 570 L CDD 56X Parameter Editor User Guide Network Modify DiffServ Rule 3 Protocol E Priority El Cancel Address Subnet Bits Al Source IP Destination IP Minimum Maximum Source Port fic Destination Port ps Bandwidth 0 bps 99 999 Mbps a Ja Data Rate Type Timeout Figure 2 14 Modify DiffServ Rule Class Selector DiffServ Code Points DSCP Some implementations of DiffServ will prioritize traffic by Class Selector assignment This is defined in the DiffServ Code Points DSCP within the IP header The first 3 bits of the DSCP define the Class Selector Precedence or Priority as shown in table 2 1 Table 2 1 DiffServ Code Points DSCP Modem Router Class Selector DSCP Priority Precedence 1 001 000 1 Precedence 2 010 000 2 Precedence 3 011 000 3 Precedence 4 100 000 4 Precedence 5 101 000 5 Precedence 6 110 000 6 Precedence 7 111 000 7 Default 000 000 9 The modem router will prioritize the traffic based upon the DSCP Class Selec tor Precedence Note All traffic that does not have the DSCP Class Selector Precedence a defined 000 000 will be placed in the Default Queue and have
28. N The Virtual Local Area Network VLAN dialog supplements the VLAN Priority Max QoS mode selection and allows configuration of tagged identifi ers VLAN tags are compatible with the VMS and Vipersat networks but auto matic switching on tags is not available note Note IP Header Compression FAST feature code must be purchased and N enabled in order for a modem to pass VLAN tags The VLAN table listing allows Add Modify and Remove operations for setting the Identifier Priority Tag and Name attributes Chapter 2 Using Parameter Editor 2 25 Network CDM570L ParamEdit CDM5XX 5 4 dll Virtual Local Area Network Network Routing QoS IGMP native native Server Management management Client Managed Switch VLAN E Vipersat STDMA H Switching Application TOS List Load Hitless DPC E Home State Modulator Demodulator Admin re Modify Remove Clear SMTP Compression Triple DES Maintenance OK Cancel Figure 2 19 VLAN dialog 2 26 CDM 570 L CDD 56X Parameter Editor User Guide Vipersat Vipersat N Chapter 2 Using Parameter Editor Note If the Vipersat feature FAST code has not been purchased for this modem the Vipersat menu item will not be displayed Clicking the Vipersat menu item displays the dialog shown in figure 2 20 This parameter set is used to configure the modem unit with the function role it is to perform in the Vipersat network and to assign associ
29. OS List Load Hitless DPC Home State Modulator Demodulator Admin SNMP SMTP Compression Triple DES Maintenance Access Control IP Adresss Access Client 1 o o0 0 0 Access Client 2 0 0 0 Access Client 3 0 0 0 0 Access Client 4 0 0 0 0 0 Access Enforcement Cancel Figure 2 39 Access dialog For detailed use and explanation of the unit s access features please refer to the section Access Lists Page in the unit s user documentation SNMP Clicking the SNMP menu item displays the dialog shown in figure 2 40 The Simple Network Management Protocol SNMP is an application layer protocol designed to facilitate the exchange of management information between network devices The Vipersat unit s SNMP agent supports both SNMP v1 and v2c with the associated version of the unit s base modem M amp C and the IP Note For proper SNMP operation the Vipersat unit s MIB files must be used Controllers SW Please refer to the Vipersat unit s documentation for information on the required FW SW compatibility 2 56 CDM 570 L CDD 56X Parameter Editor User Guide CDM570L ParamEdit CDM5XX 5 4 dll Network Routing Network Management Dos IGMP Enable SNMP for Modem Config 5 Trap Destination Addresses A Enable Authentication Trap 0 0 D O ieni Managed Switch Trap Version VLAN SNMPvl C SNMPv2 0 0 0 0 Vipersat STDMA Read Only Community public Switching
30. PC Step Down Threshold Appears for Remote modems only The SCPC Step Down Threshold field establishes the percentage of band width use that will trigger a switch down from the present SCPC rate to a lower rate to ensure efficient bandwidth usage Valid range is from 1 to 95 Yo Typically the default value will be acceptable but this value can be changed to accommodate a unique network configuration or application Note that this value must be less than the value specified for the SCPC Step Up Threshold see above SCPC Step Delay Appears for Remote modems only The SCPC Step Delay field allows a switching delay period to be specified to ensure that a premature switch up or down in the SCPC rate does not occur due to a temporary rise or fall in traffic CDM 570 L CDD 56X Parameter Editor User Guide Vipersat Typically the default value will be acceptable but this value can be changed to accommodate a unique network configuration or application SCPC Step Up Excess Appears for Remote modems only The SCPC Step Up Excess field allows adding a fixed percentage to the chan nel bandwidth request to accommodate additional bandwidth requirements which may occur after a switch is made This excess is added each time an SCPC Step Up switch occurs and makes additional bandwidth available for when the demand arises while minimizing Step Up switching events A default value is provided and need not be changed unless it is known that th
31. SCP DVB DVP E No FAST Code FEC Flash FTP Appendix A Glossary Data Encryption Standard A federal standard method for encrypting informa tion for secure transmission The Vipersat system offers 3xDES Triple DES for encrypting traffic Dynamic Host Configuration Protocol An Internet protocol for automating the configuration of computers that use TCP IP Dynamic Link Library The implementation of the shared library concept in the Microsoft Windows system Dynamic Power Control Differentiated Services Code Point The 6 bit field in an IP packet header that is used for packet classification purposes and is the portion of ToS that is detected by Vipersat modems Digital Video Broadcast Digital Voice Processor Used in packet voice applications E E Ny is the ratio of Ep energy per bit and N noise power density per Hz The bit error rate BER for digital data is a decreasing function of this ratio Ey is the energy of an information bit measured in Joules or equivalently in Watts per Hertz F Fully Accessible System Topology Code Designation for feature code used by Comtech EF Data for their satellite modems The FAST method makes it easy to quickly upgrade the feature options of a modem while it is running live in the network either on site or remotely Forward Error Correction A process whereby data being transmitted over a communications link can have error correction bit
32. TCP IP TDM TFTP ToS Tx UDP UDP multicast Unicast VESP VCS Appendix A Glossary T Transmission Control Protocol Internet Protocol A standard for networking over unreliable transmission paths See also UDP Time Division Multiplezing A method of multiplexing that provides the transmission of two or more signals on the same communication path or chan nel but at different times by utilizing recurrent timeslots Trivial File Transfer Protocol A simple file transfer protocol used over reli able transmission paths See also FTP Type of Service Transmit U User Datagram Protocol A standard for networking over reliable transmission paths A multicast transmission using the UDP protocol Transmitting information data packets to a single destination on the IP network V Vipersat External Switching Protocol A switch request protocol that allows external VPN equipment and Real time proprietary applications to negotiate bandwidth requests between any two subnets on a Vipersat network VESP is used by newer Vipersat modems e g SLM 5650A to send a switch request to the VMS to establish a new satellite link or adjust bandwidth for an existing link Vipersat Circuit Scheduler A proprietary satellite communication scheduling system used to schedule Vipersat network resources in support of a variety of high priority applications such as video conferencing and scheduled broadcast ing
33. a minimum value can be assigned to the flow that allows a committed information rate CIR to be applied to a user defined class of traffic Tip Once the QoS rules are defined each type of traffic flow should be isolated and sent to verify that it is being sent using the intended QoS rule Using the QoS Queue Statistics feature in the modem unit s CLI the traffic flows for all of the defined QoS rules can be monitored Statistics displayed include the packet rate drop rate transmit rate and active flows Chapter 2 Using Parameter Editor 2 17 Network Diff Serv QoS Mode Selecting the Diff Serv Mode radio button displays the QoS dialog appearance shown in figure 2 13 This selection makes the target unit fully compliant with the Differentiated Services QoS standards All rules are preconfigured CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Quality of Service V Enable SAR Clear MV Enable QoS Mode C Rule Max Priority C Rule Min Max Diff Serv C VLAN Minimum Bandwidth CO co 1 n Cn 2 C5 n Oo au gt Maximum Bandwidth 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999 Mbps 99 999
34. acket s Vipersat STDMA Refresh rate for UDP flows 50 packet s Switching Application Refresh rate for all other flows 50 packet s TOS List Load Hitless Tx Payload Compression DPC Home State ad Modulator Refresh rate for all flows 50 packet s Demodulator Admin Access SNMP SMTP Triple DES Maintenance Cancel Figure 2 42 Compression dialog The second check box is for setting compression for Ethernet L2 traffic This parameter is active and is configured on a per modem basis When L2 compression is enabled some of the initial traffic sent between two devices will not be received over the satellite until a full header is transmitted based on the Refresh rate If a ping is sent over the satellite it will time out until the full header packet is sent The header compression refresh rate can be reduced to minimize the amount of traffic lost when traffic is first sent between two devices The default refresh values 50 packets reflect the recommended settings for a typical modem router used in a VMS network However the refresh rates can be decreased for poor satellite link conditions or they can be increased to reduce overhead even further The valid range is 1 to 600 packet s Tx Payload Compression When selecting the Per Route Features options for a route as described in the section Routing on page 2 7 header compression compresses the IP Header and the TCP UDP headers Only tra
35. as OP sms OF Data Rate Timeout Figure 2 12 Protocol Drop Down Menu Priority This field is active for Rule Max Priority mode only A Priority level from 1 highest to 9 lowest is assigned for each flow using the Priority field The modem router classifies each packet that is to be forwarded over the satellite using the priority assigned for the selected Protocol Any packet that does not meet a QoS Rule is assigned to the Default Rule and will be assigned a Priority of 9 Priority 1 packets will be forwarded immedi ately Priority 2 packets will be forwarded as soon as there are no priority packets in the queue and so on Any latency critical traffic such as VoIP RTP should always be assigned Priority 1 Enable WRED Selecting the Enable WRED Weighted Random Early Detection check box in the dialog shown in figure 2 11 enables this function in the modem router WRED allows for more graceful dropping of packets as QoS queues get full Without WRED output buffers fill during periods of congestion When the buffers are full all additional packets are dropped Typically packets are dropped based upon a simple tail drop algorithm applied to packets as they were being added to the QoS queues This can result in large numbers of contiguous packets being dropped all at once which causes many protocols such as RTP and TCP to ungracefully degrade performance in an over consumed or bursty scenario WRED applies a randomizatio
36. ated attributes CDM570L ParamEdit CDM5XX 5 4 dll Network Routing Vipersat QoS Role Designation IGMP Hub Server Client Managed Switch VLAN Vipersat STDMA Remote List Remote Removal Switching Application Load Hitless DPC Home State Modulator Demodulator Enable VFS C Remote MV Enable Heart Beat Expansion Unit v Enable SOTM Carrier Inhibit Timer Network Id 10 Node name HUB 4 Database 1 5 4 Multicast Management Address 239 4 Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 20 Vipersat dialog Hub Unit Role Designation A Comtech modem router is a flexible network component able to perform different functions depending on how it is used in a network Table 2 3 lists some typical network functions and the corresponding network role a modem unit must have to perform its functions Using the radio buttons in the Role Designation box shown in figure 2 20 the modem router can be configured to function as a Hub or as a Remote In addition the unit can be designated as an Expansion Unit for either a Hub switched or a Remote mesh by selecting the check box This configures the 2 27 Vipersat unit demod to operate in SCPC mode and to be available as a resource for dedi cated communications with the other end of the satellite link Table 2 3 Vipersat unit Network Functions and Roles Modem Router Network Function Hub Remo
37. ation relevant to the accompanying Tip Provides complementary information that facilitates the associated actions or instructions Warning Provides precautionary text that describes a potentially hazardous situation Failure to take or avoid a specified action may result in damage to equipment Caution Provides explanatory text that notifies the reader of possible consequences of an action The following documents are referenced in this manual and provide supple mentary information for the reader e CDM 570 570L Modem Installation and Operation Manual Part Number MN CDM570L IOM Vipersat CDM 570 570L User Guide Part Number MN 22125 e CDD 564L Quad Demodulator Installation and Operation Manual Part Number MN CDD564L IOM Vipersat CDD 56X Series User Guide Part Number MN 22137 Vipersat Management System User Guide Part Number MN 22156 Vipersat Load Utility User Guide Part Number MN 22117 1 2 CDM 570 L CDD 56X Parameter Editor User Guide Product Description Product Description N Introduction The Parameter Param Editor provides a simple graphical user interface GUI for making configuration changes to modem routers used in a Vipersat satellite network Accessible from both the VMS and VLoad the Parameter Editor oper ates on the param files that store the operating parameters for network terminals This user guide documents the Parameter Editor as it applies to the CDM 570 570L modem an
38. b All of the fields except for Enable Power Hunt appear In contrast the screen shown in figure 2 22 shows a CDM 570 570L configured as a Remote with only a subset of fields available for edit If the unit is configured as an Expansion Unit for either a Hub or a Remote the only STDMA option available is the Power Hunt setting Enable STDMA Selecting the Enable STDMA check box enables Selective TDMA on this unit This option must be selected for a Remote that is to be included in the STDMA Burst Map for example Enable Power Hunt The STDMA Power Hunt feature is active for Remote modems only as shown in figure 2 22 Should link reception from a Remote be incorrect or impaired e g poor environmental conditions the STDMA Power Hunt feature is an option on the Remote modem that automatically adjusts the Remote transmit CDM 570 L CDD 56X Parameter Editor User Guide Vipersat power to ensure that burst map acknowledgements from that unit are received by the Hub burst controller CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat gt Remote List Remote Removal Switching Application Load Hitless DPC Selective TDMA Hub MV Enable STDMA Enable Low Data Rate Fast Acquisition Allocation Method Entry Channel v Group ID Slot Minimum Slot Maximum Stats Collection 1 100 msec 150 msec 10 sec Preamble 50 msec Burst Ma
39. box is selected the modem router will generate IGMP reports to join multicast groups as specifically required by some Cisco router configurations If the box is not selected the unit will generate IGMP reports to join multicast groups as defined and implemented by most IGMP servers Unsolicited Report Interval The Unsolicited Report Interval dialog box configures the modem router to generate unsolicited reports to join a multicast group at specified time intervals Each unsolicited report to join a multicast group will use the version of the IGMP protocol as specified by the IGMP version being used The value entered for this parameter specifies the number of seconds between unsolicited reports Entering a zero in the dialog box means no unsolicited reports to join a Multicast group will be generated by the unit CDM 570 L CDD 56X Parameter Editor User Guide Network Managed Switch The parameters in this dialog are not supported in Vipersat networks Refer to the modem s user documentation for additional information CDM570L ParamEdit CDM5XX 5 4 dll Managed Switch QoS IGMP Server Enable Managed Switch Multicast Client Managed Switch g VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance r Managed Switch Gateway Address 0 0 0 0 Figure 2 18 Managed Switch dialog VLA
40. cting the modem Configure command From VLoad the Parameter Editor is accessed by clicking on the Edit Param File button Chapter 2 Using Parameter Editor 2 3 Parameter Editor Tree Menu Configuration Alert Parameter Editor performs a check of the configuration settings that are input by the user If any settings are found to be in conflict for the unit an alert message is generated to inform the user that an adjustment is necessary When a dialog containing a conflicting parameter setting is exited an alert icon will appear in front of the associated menu item figure 2 2 Upon re opening the dialog an alert icon will be displayed next to the field in question Clicking on the icon will display a pop up info tip that explains the conflict CDM570L ParamEdit CDM5XX 5 4 dll Network 5 Routing Selective TDMA Hub QoS IGMP v Enable STDMA Server Client Enable Low Data Rate Fast Ac Managed Switch VLAN Vipersat Allocation Method Entry Chan TOMA al I Remote List Group ID Slot Minimum Slot Maxime Remote Removal 1 700 msec Switching 1 Minimum slot size greater than Application Maximum pang Load 28 3 333 ponanenanananaats eC Hitless maaa DPE a U ua ot oon aa a BurstMap Multicast P Address 239 Figure 2 2 Alert Parameter Conflict The following sections describe each of the menu items and their associated parameter settings 2 4 CDM
41. d is used Prior to VMS v3 6 2 and VLoad v3 4 1 the convention used is ParamEdit x x dll where x x identifies the modem firm ware version For VMS v3 6 2 and later and VLoad v3 4 1 and later the convention used includes the modem designation and firmware version e g ParamEdit CDM5XX Xx x dll Chapter 2 Using Parameter Editor 2 1 General 2 2 Updating DLL Files To update the Parameter Editor for one or both of the installed applications VLoad and or VMS the new DLL file is simply copied into the appropriate directory for that application VMS Update On both the VMS Client machine and the VMS Server copy the distributed DLL file to the following directory C Program Files Vipersat VMS 3 0 bin Vload Update Copy the distributed DLL file into the same local directory that holds the VLoad application exe These DLL file updates will not cause any disruption to the host applications Configuration Changes When changes are made to a modem unit configuration with Parameter Editor these changes can either be saved by clicking on the OK button at the bottom of the window or ignored by clicking on the Cancel button or closing the Editor Caution Clicking the OK button saves all of the data from all of the menu categories simultaneously to the modem unit Param file The OK and Cancel buttons do not apply to any single category but apply to all categories in the Parameter Editor Because the Parameter Editor c
42. d the CDD 56X series of demodulators The Parameter Editor is the same in both the VMS and V Load However the way edited parameters are applied to the Vipersat network modem routers differs between the two Once a modem s configuration has been changed using the VMS the change is immediately applied to the modem In contrast changes made using the VLoad utility are not applied until the new param file is Put uploaded to the unit by the operator Note Many of the parameters will interact with other parameters Carefully read the instructions before making changes to a unit s configuration settings Parameter modifications may also be made directly to the modem router using either a direct console connection or a Telnet connection Refer to the modem router s documentation for details on making equipment parameter modifica tions directly at the unit For more information on using the Parameter Editor with the VMS refer to the Vipersat Management System User Guide For more information on using the Parameter Editor with VLoad refer to the Vipersat Load Utility User Guide Parameter Editor Features The Parameter Editor software has the following features Simple yet comprehensive graphical user interface Integrated with both the VMS and VLoad Context sensitive for device type as well as for unit role Hub Remote Functions with multiple dll files Chapter 1 General 1 3 Customer Support Customer Suppo
43. dditionally since DPC potentially controls the full power range of the modulator s output power it is recommended that the termi nal be commissioned and calibrated before usage Automatic Uplink Power Control AUPC turned off Although this Comtech modem function is available for a connection between two point to point units it will conflict when used in a network using the network wide DPC Using both in a circuit will produce erratic and unstable operation with potential data loss low QoS and potential loss of the circuit connection y Warning Make certain that all CDM 570 570L s in the network have their Chapter 2 Using Parameter Editor 2 49 Vipersat CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Enable Dynamic Power Control Dynamic Power Control IV Enable Dynamic Power Control Minimum Power 30 dem Maximum Power 12dBm Target Eb NO io Speed Up Eb NO Range sce Target Range For No Power Adjust 0 2 dB Target IP Address 0 0 0 0 Cancel Figure 2 33 DPC dialog Selecting the Enable Dynamic Power Control function on the DPC tab enables the DPC function on the modem router Minimum Power The set value for the Minimum Power is the minimum level a
44. e left of the symbol in an email address Compression Note If the Compression feature FAST code has not been purchased for this modem router the Compression menu item will not be displayed The Compression dialog shown in figure 2 42 sets the parameters for header and payload compression in the modem This feature only applies to units that have modulators The parameters are not applicable to CDD 56X units or to Expansion units since all demodulators will automatically detect compressed packets that are received and perform decom pression Tx Header Compression If the Enable check box is selected this modem will transmit packets with compressed headers Note When compression is enabled the modem router checks the HDLC header to determine whether a received packet has a compressed header lt is possible for example to have header compression enabled only on some of the modems in a single STDMA group The first check box for L3 L4 L5 IP UDP TCP and RTP traffic header compression is always set to Enabled and appears grayed out inactive This compression is configured on a per route basis as described in the section Routing on page 2 7 CDM 570 L CDD 56X Parameter Editor User Guide CDM570L ParamEdit CDM5XX 5 4 dll Network s Routing Compression QoS I IGMP Tx Header Compression Server Client F Managed Switch IV Enable Tx L2 Header Compression Vi WEAN Refresh rate for UDP RTP1 flows 50 p
45. e type of service to be made Numbers from to 63 are recognized by the VMS as ToS codes In the Switch Type box enter the number to assign for this switch type Numbers from 64 254 are recognized as switch types with switch type 254 pre assigned for limited priority switching Switch type 1 is pre assigned for Voice and switch type 2 is pre assigned for Video Note Setting the switch type value to 254 will not allow any other switches to occur until it is taken down The 254 switch type affects all types of switching including ToS VESP and QoS While a 254 type switch is in effect the VMS continues to track switching requests then will resize to meet these bandwidth requests when the 254 type switch is completed In the Name box enter the identifying name for the ToS switch type that is being created The Switch Rate kbps can be any value between 0 and 5000 Realistically in an operating circuit depending on the settings for modulation and FEC this value should not exceed 9 98 MHz The Timeout seconds can be any value between 0 and 60 and is the value used to determine how long that no data is detected before closing the circuit Normally in a non encrypted Vipersat network packets are classified by the remote CDM 570 570L using protocol classification detection and the results are forwarded to the VMS via Automatic Switch Request ASR messages The VMS switch detector service then applies the requested bandwidth using poli
46. e without obligation to provide notification of such revision Comtech periodically revises and improves its products and therefore the information in this document is subject to change without prior notice Comtech makes no warranty of any kind with regard to this material including but limited to the implied warranties of merchantability and fitness for a particular purpose No responsibility for any errors or omissions that may pertain to the material herein is assumed Comtech makes no commitment to update nor to keep current the information contained in this document All products names and services are trademarks or registered trademarks of their respective companies Printed in the United States of America Document Revision History Revision Date Description 0 11 26 08 Initial release 1 2 06 09 New functionality in this release Tree View user interface This Page is Intentionally Blank Chapter 1 General How to Use This Manual 1 1 Manual Organization 1 1 Chapter 1 General 1 1 Chapter 2 Using Parameter Editor 1 1 Appendix A Glossary 1 1 Conventions and References 1 2 Product Description 1 3 Introduction 1 3 Parameter Editor Features 1 3 Customer Support 1 4 Contact Information 1 4 Reader Comments Corrections 1 4 Chapter 2 Using Parameter Editor General 2 1
47. each demodulator can be individually enabled and each can have its own unique parameters assigned Chapter 2 Using Parameter Editor 2 53 Admin Admin The Admin dialog allows a user to define the administrative privileges for the Vipersat unit CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP User Names Passwords Server 0 Admin comtech Client Managed Switch 1 Read Only monitor aa VLAN Vipersat 2 Read Write opcenter sa STDMA Switching Modify Application Administration TOS List Load V Enable Ping Reply Hitless DPC V Enable Telnet Telnet inactivity timeout 60 minutes Home State Modulator Demodulator I Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 36 Admin dialog User Names and Passwords Note All User names and passwords are case sensitive N Up to three levels of log in can be configured A minimum of one and a maxi mum of 11 characters can be entered in the User Names and Passwords fields Any or all of the user names and passwords can be removed by entering NONE in the field Removing all user names and Passwords would only allow access to the IP functions when connected via the Terminal Emulator serial port connection because there is no log in required Modify button To edit the User Names and Passwords fields click on the Modify button The Authentication dialog shown in figure 2 37 will be dis
48. elected Maximum Bandwidth AF only This can be assigned to a flow to restrict the maximum bandwidth that any particular flow will utilize or the default of no bandwidth restriction can be selected Note Minimum and Maximum Bandwidth is only configurable for each of the four Assured Forwarding classes CDM 570 L CDD 56X Parameter Editor User Guide Network Typically DiffServ is implemented using exclusively Class Selector DSCP or exclusively Expedited and Assured Forwarding DSCP The CDM 570 570L is fully DiffServ compliant and will work with either DiffServ implementation or with a combination of both IGMP Note If the IGMP feature FAST code has not been purchased for this modem the IGMP menu item will not be displayed Selecting the Enable IGMP Internet Group Management Protocol box on the IGMP dialog shown in figure 2 15 enables the receive portion of a modem unit to use the modem as an IGMP server The transmit portion of the terminal utilizes the modem as an IGMP client The IGMP dialogs configure the unit to report an interest to Join a Multicast group on an IGMP server IGMP is used to regulate multicast traffic on a LAN segment to prevent information of no inter est from consuming bandwidth on the LAN CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client MV Enable IGMP Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Ho
49. enforcement 2 55 admin 2 54 authentication 2 54 enable ping reply 2 55 enable telnet 2 55 telnet timeout 2 55 user names amp passwords 2 54 application switch detection 2 40 automatic switching 2 39 B bandwidth allocation dynamic cycle 2 33 dynamic slot 2 32 2 33 entry channel 2 33 fixed 2 32 2 34 GIR 2 33 2 34 burst map rate 2 35 C codecast address 2 66 compression 2 60 header 2 10 payload 2 10 tx header enable 2 60 refresh rate 2 60 tx payload enable 2 61 refresh rate 2 61 configuration alert 2 4 conventions and references 1 2 customer support 1 4 D DES 2 62 rx decryption keys 2 62 tx encryption keys 2 62 INDEX DHCP server IP address 2 7 differential services 2 18 DiffServ 2 18 DiffServ Code Points 2 19 disable remote 2 37 DLL files 2 1 updating 2 2 DPC 2 49 enable dynamic power control 2 50 maximum power 2 51 minimum power 2 50 speed up Eb NO 2 51 target Eb NO 2 51 target IP address 2 51 target range 2 51 DSCP 2 19 assured forwarding 2 20 expedited forwarding 2 20 dynamic cycle 2 33 link library 2 1 power control 2 49 slot 2 32 2 33 Eb NO 2 49 2 51 ECM 2 33 enable all downlink multicast 2 7 authentication trap 2 57 automatic switching 2 15 2 40 BFAT 2 31 dynamic power control 2 50 event logging 2 66 filtering 2 17 heart beat 2 28 IGMP 2 21 load switching 2 45 ping reply 2 55 power hunt 2 30 QoS switching 2
50. ere will be a larger bandwidth requirement after the switch STDMA Slot Capacity Appears for Hub modems only The STDMA Slot Capacity field allows setting the threshold or level of slot capacity at which the Burst Controller sends a switch request to the VMS to switch the Remote from STDMA mode to SCPC mode Typically the default value will be acceptable but this value can be changed to accommodate a unique network configuration or application STDMA Switch Delay Appears for Hub modems only In order to minimize unnecessary switching due to transient conditions such as a temporary spike in network traffic for example the STDMA Switch Delay parameter is provided This setting is used to specify a delay before the Burst Controller sends a switch request to the VMS to switch the Remote from STDMA mode to SCPC mode Typically the default value will be acceptable but this value can be changed to accommodate a unique network configuration or application Percent Allocation Appears for Hub modems only The Percent Allocation field allows adding a fixed percentage to the channel bandwidth request to accommodate additional bandwidth requirements which may occur after the switch is made from STDMA to SCPC mode Typically the default value 10 Yo will be sufficient but if there may be a larger bandwidth requirement after the switch this value can be increased In Chapter 2 Using Parameter Editor 2 47 Vipersat choosing a value f
51. ersat Refer to the Vipersat VMS User Guide for implementation details Carrier Inhibit Timer The Carrier Inhibit Timer parameter provides a time period to be specified that controls when a Remote modem should mute its transmitter in the event that there is a loss of link with the Hub This feature is useful for example in an SNG application for a mobile Remote whose antenna is no longer aligned with the satellite and should not continue to transmit the carrier signal Hub Timer Setting In a Hub unit this parameter provides a fixed setting that can be specified for the keep alive message sent to the Remote s This provides an alternate to the Burst Map which is variable and may become excessively long in certain appli cations When implemented this setting is made at either the TDM outbound unit or a switched demod Note that this timer setting should be at least three times faster shorter in dura tion than the timer setting at the Remote s to ensure that network links are maintained Remote Timer Setting In a Remote unit this parameter provides a setting for how long the Remote has not received the Burst Map from the Hub STDMA Controller before that Remote mutes its transmitter Note that this timer setting should be at least three times greater longer in dura tion than the timer setting at the Hub to ensure that the nework link is main tained Network ID The Network ID designation defines to which network the
52. ersat networks Refer to the modem s user documentation for additional information Next Hop Address The Next Hop Address box allows entering the IP address of the next hop for a route which has an Ethernet destination port selected This address must be on the local subnet Multicast If the first three digits entered in the Network Address box are in the range of 224 to 239 the address will be recognized as multicast as shown in figure 2 7 The Multicast box will become active allowing the selection of Satellite to LAN LAN to Satellite or both Add Route 1 Route Name DFG Network Address 168 Per Route Features Header Compression Payload Compression Multicast JZ SAT LAN LAN gt SAT 3xDES DES Key Clear cares Figure 2 7 Multicast Network Address Chapter 2 Using Parameter Editor 2 9 Network Per Route Features The Per Route Features provide optional functionality choices for the modem router unit The per route features are Header Compression Refer to section Compression on page 2 60 for details on setting header compression Payload Compression Refer to section Compression on page 2 60 for details on setting payload compression 3xDES Refer to the section Triple DES on page 2 62 for details on setting the DES encryption DES Key Select the key from the drop down list Modifying a Route Selecting a route from t
53. ffic past these headers is effected by payload compression Payload is considered everything inside the HDLC satel Chapter 2 Using Parameter Editor 2 61 Admin 2 62 N lite frame Therefore IP headers could be compressed as well Payload compression is an optional feature of the modem and has the following features All modems used in a VMS network operate in router mode requiring that payload compression be set on a per route basis as described in the section Routing on page 2 7 The compression algorithm is applied to all data HDLC header excluded Compression statistics are fed back to QoS in order to maximize WAN utilization while optimizing priority jitter and latency The modem runs 1024 simultaneous compression sessions to maximize compression across multiple distinct traffic flows Compression algorithm is not applied to RTP streams because this traffic is already compressed and would only increase the satellite bandwidth if compressed again Receive payload compression is auto sensed by a bit carried in packet headers and the modem unit will perform decompression This function is always avail able if the payload compression FAST code option has been purchased Triple DES The Triple DES dialog shown in figure 2 43 sets the parameters for Data Encryption Standard in the modem Each modulator and demodulator in the modem has a tab for its own unique DES keys For example a CDM 570 570
54. g the Add Insert when a remote is selected button displays the Remote Entry dialog figure 2 25 Use this dialog to enter the Name of a remote the remote s IP Address and to either disable or enable the remote with the Disable check box For STDMA set to GIR mode enter the Switch Rate and the GIR value to be used by this remote Chapter 2 Using Parameter Editor 2 37 Vipersat For STDMA set to ECM enter the SCPC Data Rate and the Switch Type to be used by this remote Remote Entry Station Name 2 Address 10 als S Disable SCPC Data Rate 256 Kbps Switch Type 0 Cancel Figure 2 25 Remote Entry dialog ECM Remove Selecting a remote from the list then clicking the Remove button will remove the remote from the VMS Disable Selecting a remote from the list then clicking the Disable button will disable the selected remote Modify Selecting a remote from the list then clicking the Modify button will display the Remote Entry dialog shown in figure 2 25 allowing the information for the remote to be edited Sort Clicking the Sort button will sort the remotes in the list e Clear Clicking the Clear button will clear all remotes from the list Automatic Remote Removal Appears for Hub modems only Selecting the Remote Removal menu item below STDMA displays the Auto matic STDMA Remote Removal dialog shown in figure 2 26 Clicking the Enable Remote Removal check box activa
55. hapter 2 Using Parameter Editor 2 33 Vipersat N N The Entry Channel mode is designed to accommodate the needs of remotes that will not be continuously connected to the network but which have the need to be able to make an on demand connection when required such as in a mobile remote Note In ECM mode the switch occurs as soon as the Hub receives an STDMA ACK even though there may not be traffic at that time Fixed In the Fixed mode all remotes have the same slot size regardless of the type of traffic or load No calculations are made to actively change slot size when operating in this mode GIR Guaranteed Information Rate In the GIR mode the initial computed slot size value is the same as the Dynamic Cycle mode except there is no maximum limit After all remotes have been assigned slots the burst map is checked to see if the total cycle length exceeds one second If not then all requirements are satisfied and the burst map is complete However if the cycle is greater than one second then the slots are adjusted proportionally so that all remotes receive at least their guaranteed rate plus whatever excess is still available When the one second restriction is exceeded remotes without a specified GIR are reduced to the global minimum slot size and the remaining bandwidth is distributed to remotes that have been assigned a GIR value Remotes assigned a GIR bandwidth allocation are given available excess bandwidth when
56. he Routing table enables the Modify button Clicking the Modify button displays the Modify Route dialog shown in figure 2 8 Modify Route 1 Route Name Destination Port Ethernet Satellite Network Address Subnet Bits 192 168 255 0 26 Per Route Features V Header Compression v Payload Compression 3xDES DES Key Clear Figure 2 8 Modify Route dialog The Modify Route dialog allows edits to be made to the fields as described above QoS Note If the QoS feature FAST code has not been purchased for this modem the QoS menu item will not be displayed 2 10 CDM 570 L CDD 56X Parameter Editor User Guide Network The QoS menu item is not displayed for receive only network units such as the CDD 56X Selecting the QoS Quality of Service menu item displays the dialog shown in figure 2 9 Quality of Service is an optional modem router feature If this feature is enabled the user may select one of four Modes of QoS operation Rule Max Priority QoS rules based on maximum bandwidth and priority Rule Min Max QoS rules based on minimum and maximum bandwidth Diff Serv QoS rules based on Differentiated Services settings e VLAN QoS rules based on the user priority field in the VLAN header CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless
57. hich of the two images has the most recent firmware The available options are Oldest The oldest available image Image 1 Chapter 2 Using Parameter Editor 2 65 Maintenance 2 66 Image 2 Base Modem Image The radio button options available in the Base Modem Image determine which image will be used to boot from following a reset of the modem unit Enable Redundancy When a Remote modem is in a 1 1 redundant configuration this parameter will be Enabled checked and ParamEditor can be used to change this setting to Disable redundancy unchecked for the modem Caution ParamEditor can not be used to Enable Redundancy it can only Disable it when it has been Enabled Once this parameter is Disabled and the configuration is saved this parameter will become inactive grayed out Codecast Address Enter the multicast address to be used by the modem router to receive Codecast messages in this field Event Logging Enable Selecting the Enable box will enable event logging on the modem router Level The radio buttons available in the Level box allow selecting the type of data to be logged Errors only Errors and Warnings All information Automatically Save PARAM After CONFIG Change This parameter is not supported in Vipersat networks and will appear grayed out inactive Refer to the modem s user documentation for additional informa tion on this setting CDM 570 L CDD 56X Parameter Ed
58. itor User Guide GLOSSARY ACK ARP ASR Base Modem BER BPS A A signal used in computing and other fields to indicate acknowledgement such as a packet message used in TCP to acknowledge the receipt of a packet Address Resolution Protocol A protocol for a LAN device to determine the MAC address of a locally connected device given its IP address See also MAC Automatic Switch Request A switch request message generated by older Vipersat modems e g CDM 570 L that is sent to the VMS to establish a new satellite link or adjust bandwidth between source and destination IP addresses B The main component in a satellite communications modem that consists of a circuit board with the modem hardware and firmware and the associated inter faces Bit Error Rate sometimes Ratio A measure of the number of data bits received incorrectly compared to the total number of bits transmitted Bits Per Second A measure of transmission speed See also Kb s amp Mb s Appendix A Glossary A 1 BPSK BUC C Band CDD CDM CIR CLI Codecast CRC CXR DAMA dBm Binary Phase Shift Keying A digital modulation technique in which the carrier is phase shifted 180 degrees two phases The most robust of all PSKs but unsuitable for high data rate applications when bandwidth is limited due to encoding just one bit per symbol Block Up Converter An upconverter so called because it converts a who
59. ity of Service switch detection option to configure the CDM 570 570L to request a switch from VMS as determined by the parameters entered for QoS as described in the section QoS on page 2 10 QoS Rule based switching is a flexible and powerful mechanism for initiating a Vipersat switch from STDMA to SCPC mode This feature allows traffic to be prioritized in situations where bandwidth availability exceeds demand QoS based switching in addition to prioritizing traffic will anticipate increased demand and preemptively allocate more bandwidth as required Note The DiffServ Mode is not supported for QoS switching Caution If the QoS switching rule is not carefully defined it is possible to generate many more switches resulting in using more bandwidth than intended This is because the QoS rules can be defined very generally but switches are done based on the concept of a flow which is defined as a unique combination of the following parameters source IP and port destination IP and port and protocol For example if a rule is defined for UDP traffic with no restrictions on IP or Port then each time the system detects a new stream of traffic with a new IP address or port number another switch will be made CDM 570 L CDD 56X Parameter Editor User Guide N Chapter 2 Using Parameter Editor Vipersat Channel Table Signaling Detection This feature is no longer supported ToS Switching Select the Type of Service switch de
60. lay This field allows the operator to insert additional delay to account for the tuning of the demodulator Lock Times Lock Time settings for the four data rates displayed can be adjusted either up or down but default settings based on satellite testing should be used as a starting point These defaults are stored in each modem unit and are restored by clicking on the Defaults button The initial setting is with Hitless Switching disabled all check boxes are unchecked and the lock times are displayed as 1 msec Selecting the check box for a data rate will activate the field for that rate display the current lock time and allow that value to be edited DPC The DPC dialog for a Hub or Remote operating in STDMA mode is displayed in figure 2 33 Note that for an Expansion unit only the Speed Up Eb N0 and the Target IP Addresses fields are active Dynamic Power Control DPC isa Vipersat feature that acts to regulate the transmit power of the Vipersat satellite modem such that the specified receive signal level E No is met for the receiving Vipersat units in the group DPC is driven by the receiver demod which notifies the transmitting modem of the current E No value Before enabling DPC the operator should verify that a demodulator at another terminal is receiving from this modulator and that there is a working communi cations channel from that receiving station back to the modulator terminal InBand communications A
61. layed Enter the value for each of the three portions of the DES key in the Modify Key dialog shown in figure 2 44 then click the OK button to enter the change Modify Tx1 Key1 4444444444444444 6666666666666666 Figure 2 44 Modify DES Key dialog 2 64 CDM 570 L CDD 56X Parameter Editor User Guide Maintenance Maintenance The Maintenance dialog shown in figure 2 45 determines what parameters will be used during the next modem router reboot and how errors are to be logged by the unit Warning The selections made in the Maintenance dialog are critical Selecting incorrect options can cause the unit to fail CDM570L ParamEdit CDM5XX 5 4 dll Network T Routing Maintenance QoS IGMP Upgrade Image r Server C Oldest Client I Cass Codecast Address Managed Switch g 2393 10 20 40 VLAN Image 2 Vipersat STDMA Event Logging Switching j pth Application Base Modem Image Level TOS Liat C Latest C Errors Only Load A A Hitless Image 1 Errors and Warnings DPC Image 2 All Information Home State Modulator Demodulator JA Admin Access SNMP SMTP Compression Triple DES Cancel Figure 2 45 Maintenance dialog Upgrade Image Using the radio buttons in the Upgrade Image box determines the image which will be used during the next firmware upgrade Selecting Oldest image to be upgraded is probably the safest selection as it does not require the operator to know w
62. le band or block of frequencies to a higher band The IF is converted to final transmit frequency for satellite communications The BUC is part of the satellite ODU transceiver C A freguency band commonly used for satellite communications and sometimes terrestrial microwave For terrestrial earth stations the receive freguency band is 3 625 4 2 GHz and the transmit band is 5 850 6 425 GHz See also Ku band Comtech Data Demodulator Comtech Data Modem Committed Information Rate The guaranteed minimum bandwidth assigned to a remote terminal Command Line Interface A mechanism for interacting with a computer oper ating system or software by typing commands to perform specific tasks A network coding based ad hoc multicast protocol well suited for multimedia applications with low loss low latency constraints Because data is streamed with no verification high delivery ratios are obtained with very low overhead Cyclic Redundancy Check A method of applying a checksum to a block of data to determine if any errors occurred during transmission over communica tions links Carrier A radio frequency transmission linking points and over which infor mation may be carried D Demand Assigned Multiple Access A process whereby communications links are only activated when there is an actual demand Decibel referenced to 1 milliwatt CDM 570 L CDD 56X Parameter Editor User Guide DES DHCP DLL DPC D
63. le remotes Allocation Method Entry Channel Fixed Slot Minimum Dynamic Slot Dynamic Cycle 100 msec GIR Pia ahisi Entry Channel g Ati band EN mann FEN mana Figure 2 23 Bandwidth Allocation Method switching is automatically disabled In GIR mode the Remote is switched to SCPC as soon as the GIR threshold is reached if there is a switch rate defined In Entry Channel mode the Remote is switched to SCPC as soon as the Hub receives the first transmission from the Remote Note If the Hub STDMA mode is either GIR or Entry Channel normal load NOTE Dynamic Cycle In the Dynamic Cycle bandwidth allocation method available bandwidth is allocated to remotes proportionally based on their current bandwidth needs The bandwidth requirements are determined by the number of bytes in queue for each remote divided by the total number of bytes in queue for all remotes to determine the percentage of bandwidth to allocate for each remote Dynamic Slot In the Dynamic Slot mode the slot size for each remote is computed based on the time at the current data rate needed to transmit all the Bytes in Queue If the result is less than the minimum slot size or more than the maximum slot size the slot is adjusted accordingly Entry Channel The Entry Channel Mode ECM is the same as Dynamic Cycle mode except that as soon as the Hub receives an STDMA ACK it initiates a switch to SCPC mode based on the policy set for that remote C
64. llowed by all SCPC modulators Using the values entered in the Home State dialog see Home State on page 2 52 together with the value entered for the Maximum Power the modem scales the Maximum Power to optimize the E N for what ever data rate the unit is transmitting For this reason it is recommended that the Minimum Power be set to the lowest possible setting 40 0 dBm giving the power adjustment the largest possible working range In the majority of applications the minimum power level parameter can be set to the default power value of 40 0 dBm Typically there is no problem in allowing the modulator s to back off decreasing power levels to better the qual ity of link conditions 2 50 CDM 570 L CDD 56X Parameter Editor User Guide Vipersat Maximum Power Commissioning a terminal is following the calculated link budget before termi nal installation Using these calculations the maximum limit for modulator s output power can be determined This is the value entered in the Maximum Power field shown in figure 2 33 If more than one modulator is used at this location that must also be taken into consideration and applied to this value set point The value set point assures that the maximum power level is within the acceptable range for this modem and the circuit The value entered sets the maximum power level allowed by all SCPC modula tors Target Eb NO Enter the desired operating receive level for closed loo
65. loses after a save operation it is recommended that all changes be input prior to clicking on the OK button CDM 570 L CDD 56X Parameter Editor User Guide Parameter Editor Tree Menu Parameter Editor Tree Menu The Parameter Editor displays the editable parameter categories for each network modem router in the form of a tree menu as shown in figure 2 1 The tree appearance will vary depending on the selected Network Addressing Mode the Role Designation and whether the unit has both a modulator and a demodu lator or a demodulator s only Vipersat Hub Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STOMA Remote List Remote Removal Switching Application Load Hitless BPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Figure 2 1 Tree Menus Vipersat Modes Vipersat Remote Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Expansion w o Mod Network Routing IGMP Server Vipersat STDMA Switching Hitless DPC Home State Demodulator Demodulator Demodulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance From the VMS the Parameter Editor is accessed by sele
66. me State Modulator Demodulator Internet Group Management Protocol Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 15 IGMP dialog Chapter 2 Using Parameter Editor 2 21 Network Modem as IGMP Server CDM570L ParamEdit CDM5XX 5 4 dll Network Routing Modem as IGMP Server QoS IGMP Client Query Period 30 sec Managed Switch VLAN Maximum Response Time 28 sec Vipersat r STDMA Number of Missed Responses 5 Switching Before Leaving IGMP Group Application TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 16 IGMP Server dialog Query Period The IGMP protocol requests that a server periodically publish to users on the LAN the multicast IP Addresses that it can service The IGMP Query Period defines the time interval in seconds between each of these queries for membership Maximum Response Time The IGMP Maximum Response Time defines the time interval in seconds that the unit should wait before it assumes that no parties are interested in the content published via an IGMP query This option is expressed in seconds and the maximum response time that is accepted by the unit is Query Period minus two seconds Number of Missed Responses Before Leaving IGMP Group The number entered in this dialog box defines the number of membership queries that go unans
67. mes back on line from a reset or a power cycle These Home State settings are typically selected so that the unit goes to a configuration which is optimum for its function in the network Home State MV Enable STDMA Figure 2 34 Home State Enable STDMA CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application TOS List Load Hitless DPC Home State Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Modulator Home State V Enable Home State Power Level 24 dBm Frequency 1 205 GHz Data Rate jv Enable Carrier Modulation Type QPSK Coding Type Turbo Coding Rate 1 024 Mbps 374 Cancel Figure 2 35 Home State dialog Modulator The Home State menu items allow enabling STDMA Home State and Carrier and setting the unit s Transmit and Receive frequencies data rates coding rates modulation types and power level Transmit only which are applied at boot up 2 52 CDM 570 L CDD 56X Parameter Editor User Guide Vipersat If the modem is a CDD 56X each of the demodulators has a sub menu item for its own unique home state As with the CDM 570 570L each of the CDD 56X s demodulator home states should be configured for optimum performance of its function in the network when the unit is returned to its home state for any reason The home state for
68. modem router belongs All devices in a common network will have the same network ID The network ID is used by the VMS to identify Vipersat units within a network and allows the VMS to manage multiple networks each with its own unique network ID number Database Version The version number is read only and displays the version of the firmware running in this modem unit Chapter 2 Using Parameter Editor 2 29 Vipersat 2 30 Node Name Enter a name sixteen characters or less for the node which helps identify the Vipersat unit on the network Multicast Management Address The Multicast Management Address is the multicast IP address assigned to all modem units in the Vipersat network that are managed by the VMS This address must match the VMS Transmit Multicast Address When the modem unit receives a multicast from the VMS server it receives maintenance and control packets including the server s IP address The unit responds to the VMS server with a unicast containing its current configuration data including the unit s IP address When the VMS receives the unicast response it registers the unit on the network STDMA Clicking the STDMA menu item will display the Selective TDMA dialog shown in figure 2 21 The fields available for edit on this dialog will vary depending on the function role that this modem unit is performing in the network For example the CDM 570 570L shown in figure 2 21 is operating as a Hu
69. n which means that the percentage change to dropped packets increases as the queue becomes full and minimizes the CDM 570 L CDD 56X Parameter Editor User Guide Network chances of global synchronization Thus WRED allows the transmission line to be used fully at all times Enable Filtering QoS allows specific flows to be designated as filtered so the modem router will discard traffic that the user does not want to forward over a satellite link Selecting the Enable Filtering check box enables filtering IP Addressing Specific Source and Destination IP Addresses can be specified for a rule if desired Source and Destination Ports Selecting Source and Destination Ports should only be done if the user is aware of the port used by the desired protocol or application There are well known ports for various protocols but often only command messages use these specific ports and data is transferred through a negotiated port Either specific port numbers or a range of ports can be entered using the Source Port and Destination Port Minimum and Maximum fields Minimum amp Maximum Bandwidth Minimum and Maximum Bandwidth values can be assigned to a flow to restrict the bandwidths that any particular flow will utilize The default of no bandwidth restriction can be set by selecting the All check box Note that for Rule Max Priority no minimum bandwidth restriction is applied 0 bps and can not be edited For Rule Min Max
70. n the table listing through the use of the Up Down Arrow buttons Note however that the Default rule always occupies the first row of the table and can not be repositioned Developing QoS Rules in a VMS Network The optional QoS capabilities available in each modem router may be utilized whenever a modem will be handling high priority traffic such as video or voice While developing the QoS Rules to be applied to the unit the type of traf fic the modem is expected to handle must be considered Defining QoS Rules The QoS mode that is chosen will determine the settable parameters for defining QoS rules An example of a dialog for adding a rule is shown below in figure 2 10 QoS Rules can be assigned to up to 32 different types of flows defined by the user Flows can be defined by any combination of Protocol FTP UDP RTP etc Source Destination IP specific or range and or Layer 3 Source Destina tion Port CDM 570 L CDD 56X Parameter Editor User Guide Network Add Quality of Service Rule 1 Protocol PG v IV Enable WRED Priority 1 Enable Filtering Cancel Address Subnet Bits Al Source IP 10 73 130 10 32 Destination IP 10 73 0 12 32 Minimum Maximum Source Port Destination Port Bandwidth QoS Switching Data Rate Type Timeout Figure 2 10 Add Quality Of Service Rule dialog QoS Rule Hierarchy It is quite possible to have traffic that meets the definitions of several
71. needed Note GIR allocations are restricted so that assigned GIR totals cannot exceed the available bandwidth to insure proper bandwidth allocation when the network is overloaded Attempts to enter a GIR which would result in a spin time of more than one second will error out The bandwidth allocation method selected will determine which of the associ ated parameters are available and applicable for that allocation method Depending on the capability of the CDM 570 570L and its function in the network some of the following parameters may be grayed out and unavailable Group ID Active for both Hub and Remote modems The STDMA group ID number defines a group of equipment which will respond to the output of a single STDMA burst controller This group is CDM 570 L CDD 56X Parameter Editor User Guide Vipersat addressable within a network which in turn is defined by the network ID number assigned to the modem router Inan STDMA roup the allocation of bandwidth is shared among the associ ated remotes Depending on the number of remotes in a network a Hub may have multiple burst controllers each with its own set of remotes This is accom plished by assigning a unique Group ID number to each controller and its remotes Note The STDMA group number and the network ID are independent There can be multiple STDMA groups within a single network Slot Data Length This parameter is active for the Hub modem only The Slot Data
72. ng mode y Warning Selecting the Managed Switch mode will invoke bridging mode in Enable All Downlink Multicast When the Enable All Downlink Multicast check box is selected the IP Module in the modem will automatically forward all multicast packets received from the Satellite interface to the Ethernet LAN port without regard to the Route Table When this feature is not selected multicast traffic from the Satellite will not be forwarded to the LAN unless a multicast route exists in the Route Table to handle this type of traffic DHCP Server IP Address This option allows hosts at this remote site to receive dynamically assigned IP addresses when a DHCP server is located at the Hub site If applicable enter the IP address of the DHCP server Dynamic Buffer Latency A buffer period can be specified for the modem for WAN traffic For real time applications such as voice or video this period would typically be minimized This field defaults to 5 seconds the value range is from 0 200 to 5 000 seconds Routing Clicking the Routing menu item displays the modem unit s routing dialog shown in figure 2 5 All current Static Routes are displayed in the table listing Adding a Route To add a new static route click the Add button at the bottom of the Routing dialog to display the Add Route dialog shown in figure 2 6 Route Name Enter a designation for the route in the Route Name dialog box maximum 13 characters Chapter
73. ns technique where an individual channel is transmitted to the designated carrier frequency Some applications use SCPC instead of burst transmissions because they require guar anteed unrestricted bandwidth Session Initiation Protocol A general purpose protocol for multimedia communications commonly used for voice over IP VoIP signaling An alter native to the H 323 protocol Satellite News Gathering A satellite uplink van truck with television crew on location conducting a live report for a newscast Simple Network Management Protocol A protocol defining how devices from different vendors may be managed using a common network management system Satellite On The Move The ability of a mobile remote terminal to roam across satellite beams to preserve link integrity and to automatically connect from one satellite and or hub to another in a global network A network topology which if drawn as a logical representation resembles a star with a hub at the center Selective Time Division Multiple Access A multiple access technique where users time share access to a common channel with variable sized time slots allocated on usage A proprietary Vipersat data streaming protocol Status Update Message A packet message that is sent by newer Vipersat modems e g SLM 5650A to the VMS every sixty seconds providing status update and operating parameter information CDM 570 L CDD 56X Parameter Editor User Guide
74. nu dialogs will vary depending on the function role that this modem unit is performing in the network The Vipersat Automatic Switching feature allows the modem unit to automati cally adjust to varying bandwidth demands in the Vipersat network by switch ing between STDMA and SCPC Automatic Switching must be enabled on a Chapter 2 Using Parameter Editor 2 39 Vipersat modem that will be required to send switching requests to the VMS in response to either traffic type Application switching or network traffic loads Load switching Use the Enable Automatic Switching check box to enable disable the Auto matic Switching feature for this modem CDM570L ParamEdit CDM5XX 5 4 dll Network Routing Automatic Switching QoS IGMP Server Client Managed Switch jv Enable Automatic Switching VLAN Vipersat STDMA Remote List Remote Removal i Application Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Cancel Maintenance Figure 2 27 Switching dialog Application Switch Detection Application switching can be enabled for Video Voice Quality of Service QoS and or Type of Service ToS by selecting the appropriate check box in the Application Switch Detection dialog figure 2 28 Application switching controls are only available on units configured as remotes Note Load switching by VMS is not affected by this setting NI Application switching is
75. or this allocation future bandwidth requirements for the chan nel must be balanced against efficient bandwidth utilization Hitless Switching Unless inherent delays in configuring both ends of a satellite bandwidth link during dynamic switching are accounted for transmitted data may be lost during the transition The time for a switch command to be sent across the satel lite link 250 ms the command processing time as well as receiver acquisi tion time must be considered The Vipersat Hitless Switching feature provides a means to coordinate timing and utilize buffering to eliminate these data outages Click on the Hitless Switching menu item below Application to display the dialog shown in figure 2 32 CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP I Server Modulator Delay Omsec Client Managed Switch Demodulator Delay Omsec VLAN Hitless Switching Calibration Vipersat STOMA 64 kbps Lock Time Switching Application TOS List Load DPC Home State Modulator Demodulator 128 kbps Lock Time 256 kbps Lock Time 512 kbps Lock Time Defaults 2 48 Admin Access SNMP SMTP Compression Triple DES Maintenance Figure 2 32 Hitless Switching dialog Modulator Delay This field allows the operator to insert additional delay to buffer more data after modulator transmission is ceased CDM 570 L CDD 56X Parameter Editor User Guide Vipersat Demodulator De
76. p Multicast IP Address 239 1 Guard Band 50 msec Chapter 2 Using Parameter Editor Home State Modulator Demodulator Outbound IP Address forDPC 10 75 Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 21 STDMA dialog Hub Unit When enabled the burst controller sets a flag in the burst map that indicates it is not receiving acknowledgements from an enabled Remote When the Remote receives the burst map it will see the flag and automatically increase power by 3 dB above the default or Home State setting If this closes the link the burst controller will clear the flag Note that if the 3 dB increase is more than is neces sary DPC will make a down adjustment to the appropriate level and this adjust ment will be added to the DPC Offset This feature is enabled by selecting the check box Enable Low Data Rate Fast Acquisition Configurable on a Hub Burst Controller only Selecting this check box enables the Vipersat Burst Fast Acquisition Timing BFAT feature that functions at low data rates 64 kbps to 256 kbps This feature allows for significantly faster acquisition times at these data rates even with higher noise resulting in improved efficiency of the shared STDMA chan 2 31 Vipersat nel Since signal lock is faster at higher data rates BFAT is not active above 256 kbps Note Note that this parameter is only active for units that have the BFAT FAST featu
77. p servo control This is the value used by the receiving modem s modulator to control its output power level Speed Up Eb NO Normally the DPC message is sent every 60 seconds from each terminal in the network If the target E Ng value drops below the value set in the Speed Up Eb N0 box the corresponding terminal increases its DPC message send rate to every five seconds until the target value is greater than the Speed Up E N value This provides a loop speedup to rapidly regain link quality Target Range For No Power Adjust The Target Range For No Power Adjust sets the differential between the current E No and the Target E No value that when reached causes the modu lator to stop adjusting its power output The default value for this parameter is 0 2 dB Target IP Address In a VMS network the VMS automatically assigns the Target IP Addresses The user will only need to fill in these addresses if the network configuration is not anormal VMS configuration and requires a fixed IP address for DPC communications Enter the IP address for the target transmitting site from which this unit will be receiving Up to four sites such as for a CDD 564 quad demodulator can be entered Chapter 2 Using Parameter Editor 2 51 Vipersat Home State A Vipersat unit s Home State consists of those parameters which provide a known RF configuration that the unit will return to either as the result of a command by the VMS or as it co
78. played 2 54 CDM 570 L CDD 56X Parameter Editor User Guide Admin Authentication Enter Admin Password to Enable Modification c n Cancel Figure 2 37 Authentication dialog For security purposes the Admin password must be entered before any changes are allowed Clicking the OK button will enable the User Names and Passwords fields as shown in figure 2 38 Administration User Names Passwords HO Admin Eien P 1 Read Only monitor n 2 Read Write Jopcenter Figure 2 38 Admin dialog Enabled Enable Ping Reply Select this check box to have this unit reply to Ping requests Enable Telnet Select this check box to allow a telnet connection to this unit Telnet Inactivity Timeout Enter the time in minutes of inactivity before a telnet session times out and is disconnected from this unit Access The Access dialog allows controlling access to the Vipersat unit by defining up to four IP and subnet client addresses which are allowed to access the modem Restricting access to the unit requires that the Access Enforcement check box be selected If this box is checked only those units with listed Access Client s IP addresses can access this modem All other units will be denied access Chapter 2 Using Parameter Editor 2 55 Admin CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application T
79. r defined SNMP name information in this field CDM 570 L CDD 56X Parameter Editor User Guide Admin System Location Enter user defined SNMP location information in this field SMTP Clicking the SMTP Simple Mail Transfer Protocol menu item displays the dialog shown in figure 2 41 allowing the user to specify the appropriate settings for the SMTP email server CDM570L ParamEdit CDM5XX 5 4 dll Network 3 Routing Mail Transfer QoS IGMP Server Server IP Address Client Managed Switch VLAN Domain Vipersat STDMA Switching Application TOS List Load Destination Name Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 41 SMTP Tab The SMTP settings are utilized when sending an email via the modem router s Home Support Web page by a user who is connected to the IP module through a Web browser Examples of these settings would be for a network administrator or technical product support Refer to the modem router user documentation for additional information on this feature Chapter 2 Using Parameter Editor 2 59 Admin 2 60 N N Server IP Address Enter the mail server address from where email is to be sent Domain Enter the domain of the email server usually found to the right of the symbol in an email address Destination Name Set the email recipient name typically found to th
80. r in the receive chain of a satellite system Low Noise Block A downconvertor so called because it converts a whole band or block of frequencies to a lower band The LNB similar to an LNA is part of the satellite ODU transceiver Low Noise Converter A combined low noise amplifier and block down converter typically with an L band IF Local Oscillator Component used in upconverters downconverters and tran sponders for frequency translation heterodyne of the carrier signal Appendix A Glossary A 5 M amp C MAC Mb s Modem Multicast Multi command NAT NIC NMS NOC NP ODU M Monitor amp Control Media Access Control A protocol controlling access to the physical layer of an Ethernet network Mega Bits per Second 1 Million bits second A measure of transmission speed See also bps amp kb s Modulator and demodulator units combined Transmitting a single message simultaneously to multiple destinations group on the IP network A command that allows multiple input choices in a single command execution N Network Address Translation An Internet standard that enables a LAN to use one set of IP addresses for internal private traffic and a second set of addresses for external public traffic Network Interface Controller The network interface for a PC workstation that provides Ethernet connectivity Depending on the computer the NIC can either be built into
81. re code installed Modems must be operating at either 3 4 QPSK or 95 QPSK in order to utilize BFAT CDM570L ParamEdit CDM5XX 5 4 dll Network Routing Selective TDMA Remote QoS IGMP Server M Enable STDMA Client Managed Switch Enable Power Hunt VLAN Vipersat Group ID 50 Switching Application Burst Map Multicast IP Address 239 1 TOS List Load Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 22 STDMA dialog Remote Unit Allocation Method Active for Hub modems only When the CDM 570 570L is being used as a Hub it has five STDMA modes of operation which define the method VMS uses to allocate bandwidth Select one of these modes from the drop down Bandwidth Allocation Method menu shown in figure 2 23 Fixed All remotes get the same size slot regardless of each remote s activity e Dynamic Slot size is adjusted each cycle depending on activity during the previous cycle 2 32 CDM 570 L CDD 56X Parameter Editor User Guide Vipersat Dynamic Cycle A dynamic cycle allows changing the cycle time and corresponding latency as loads change always providing minimum latency for the current traffic load GIR Guaranteed Information Rate allows assigning a guaranteed data rate to a channel Entry Channel Entry channel mode provides an on demand channel for applications such as a mobi
82. rnet Control Message Protocol Indoor Unit In a VSAT system the satellite modem is referred to as the IDU Intermediate Frequency In satellite systems IF frequencies are usually centered around 70 or 140 MHz video TV or 1200 MHz L band CDM 570 L CDD 56X Parameter Editor User Guide IFL Image ISP ITU Kb s Ku Band L Band LAN LLA LNA LNB LNC LO Intra Facility Link The coaxial cabling used to connect the satellite ODU to the IDU Carries the inbound and the outbound signals and the 24 VDC for the LNB A binary firmware file that provides the operational code for the processor s in a network unit Internet Protocol A format for data packets used on networks accessing the Internet Internet Service Provider A company providing Internet access International Telecommunications Union K Kilo bits per second 1000 bits second A measure of transmission speed See also bps amp Mb s A frequency band used for satellite communications For terrestrial earth stations the receive frequency band is in the range 10 95 12 75 GHz and the transmit frequency band is 13 75 14 5 GHz See also C band L A frequency band commonly used as an IF for satellite systems using block up down conversion Typically 950 1450 MHz Rx 1250 1750 MHz Tx Local Area Network Low Latency Application Low Noise Amplifier An amplifier with very low noise temperature used as the first amplifie
83. rt Contact Information Contact Comtech Vipersat Networks Customer Support for information or assistance with product support service or training on any Vipersat product Mail 3215 Skyway Court Fremont CA 94539 USA Phone 1 510 252 1462 510 252 1695 Email supportcvni comtechefdata com Fax Web www comtechefdata com Reader Comments Corrections If the reader would like to submit any comments or corrections regarding this manual and its contents please forward them to a Comtech Vipersat Customer Support representative All input is appreciated 1 4 CDM 570 L CDD 56X Parameter Editor User Guide USING PARAMETER EDITOR General DLL Files The Parameter Editor is a shared run time Dynamic Link Library DLL file which is called from both VLoad and VMS software applications It is used as an extension to both of these programs in providing an extendable User Inter face This file resides in a locally sourced directory for access by the host appli cation To access the Parameter Editor from either the VMS or VLoad the appropriate DLL files are required There is a DLL file for each modem firmware version For example ParamEdit 5 4 dll is utilized for modems that are running firm ware v1 5 4 For networks that have multiple modem firmware versions multi ple DLL files are required Please note that the naming convention for these files may differ depending on what version of VMS or VLoa
84. rver that is defined in the unit s route table If this box is not selected the modem router will not respond to IGMP queries from a server In this type of configuration the unit is configured to uncondi Chapter 2 Using Parameter Editor 2 23 Network tionally request to Join an IGMP group at an interval specified in the Unsolic ited Report Interval dialog box see below Version Selecting either the V1 or V2 radio button determines which version of the IGMP protocol will be used when attempting to Join a group on a multicast server via an unsolicited report When the modem router is configured to recog nize IGMP queries it will respond to a query in the same version that the server used to initiate the query Router Alert Option for V1 Report Selecting the Router Alert Option for V1 Report option enables a special case ability to use some Cisco routers which require the definition of a router alert option to recognize a report from a client to Join a multicast group The IP Router Alert Option is defined in RFC2113 and was introduced by Cisco While this option is not part of the IGMP standard most IGMP V2 implementa tions contain this option Check whether or not your router requires this option as most implementations of IGMP V1 do not contain this option This parameter is defined for those special cases in which a Cisco router is configured as an IGMP V server to prevent possible conflicts in networks If the
85. s added which may be used at the receiving end to determine correct any transmission errors which may occur Non volatile computer memory that can be electrically erased and repro grammed File Transfer Protocol An application for transferring computer files over the Internet See also TFTP G 729 GIR Group ID GUI H 323 HDLC HPA HTTP Hub ICMP IDU G ITU standard for LD CELP Low Delay Code Excited Linear Prediction voice encoding at 8 kb s Guaranteed Information Rate A number assigned to equipment which defines it as a member of a group when addressed by the VMS burst controller Graphical User Interface A form of graphical shell or user interface to a computer operating system or software application H A protocol standard for multimedia communications designed to support real time transfer of audio such as voice over IP and video data over packet networks Quality of Service is a key feature of H 323 An alternative to SIP High Level Data Link Control A standard defining how data may be transmit ted down a synchronous serial link High Power Amplifier The amplifier used in satellite communications to raise the transmit signal to the correct power level prior to transmission to satellite Hyper Text Transfer Protocol The Internet standard for World Wide Web WWW operation The central site of a network which links to a number of satellite earth sites remotes Inte
86. te Expansion Hub Burst Controller providing STDMA Timing x Maps Hub Switched Demodulator x x Remote STDMA Modem x Remote Mesh Demodulator x x Enable VFS To allow the use of the Vipersat File Streamer with this unit select the Enable VES check box Enable Heart Beat Active for Hub units only The Heart Beat feature is a redundancy heart beat message for primary Hub units that provides the option for a periodic communications check message to be sent from the Hub modem to the VMS for backup recovery in N M redun dancy protected configurations Enable SOTM Active for Hub units only The SOTM Satellite On The Move feature enables RIPv2 Routing Informa tion Protocol In forward routes providing dynamic updates to the routing table This allows routing configurations for Remotes to be written by the VMS via the Hub TDM When the VMS writes the routes the TDM unit will generate a RIPv2 routing update to its default gateway specifying the new hop router for the Remote This will ensure that the edge router has a current table of routes to all of the remote sites In applications utilizing SOTM where multiple TDMs share one router this option should be enabled because of the potential that the Hub TDM may change and thus the path to the default gateway to the Remote will change as well It is not necessary to enable this option when each TDM has its own router 2 28 CDM 570 L CDD 56X Parameter Editor User Guide Vip
87. tection check box to enable the ToS detec tion function for this unit Applying a ToS value to an application VoIP IPVC or priority data through either preservation or classification packet stamping allows the Vipersat switching system to function in an encrypted network Note In addition to setting the CDM 570 570L to recognize ToS enabled traf fic the ToS switch type must be included in the subnet or global policy statement in order for the VMS to act on the switch request To configure the ToS switching parameters click the ToS List menu item below Application CDM570L ParamEdit CDM5XX 5 4 dll Network Routing QoS IGMP Server Client Managed Switch VLAN Vipersat STDMA Switching Application Load Hitless DPC Home State Modulator Demodulator Type of Sevice Switching List Service Name Type Switch Rate Timeout 1 SideComm 65 256 Kbps 20 seconds 6 PrvComm 70 2 5 Mbps 30 seconds Admin Access SNMP SMTP Compression Triple DES Maintenance Add Modify Remove Clear Cancel Figure 2 29 Type of Service Switching List Clicking the Add button displays the Type of Service Entry dialog shown in figure 2 30 2 43 Vipersat 2 44 NOTE NI Type of Service Entry ToS Code Switch Type M AA Name Switch Rate Timeout Figure 2 30 Type of Service Entry Using the drop down menu in the ToS Code box select the number identifying th
88. tes the editable fields in this dialog that provide settings to define when an associated remote will be removed from the group 2 38 CDM 570 L CDD 56X Parameter Editor User Guide Vipersat Automatic STDMA Remote Removal v Enable Remote Removal Timeout 3 cycles Retry V 110 cycles Figure 2 26 Automatic Remote Removal Timeout The value entered in the Timeout field determines the number of cycles with no connection received ACKs before a remote is removed from the network the burst map This would be used for example where a mobile remote has finished its assignment and has shut down After the number of cycles entered in the dialog above the remote is removed from the network and the bandwidth resources it had been using are available for other uses Retry The Retry field value determines the number of cycles which are allowed to pass following the removal of a remote before that remote is returned to the burst map and an attempt is made to re establish a link This allows again using a mobile remote as an example shutting down the remote at one location moving it to a new location and then automatically re establishing a connection to the satellite network Switching For a detailed description of Automatic Switching in the VMS refer to the Vipersat Management System User Guide Clicking the Switching menu item displays the dialog shown in figure 2 27 The fields available for edit on the sub me
89. th set in the policy to handle three simultaneous voice connections When a VoIP protocol is detected in the H 225 signaling protocol the CDM 570 570L requests the VMS to switch the bandwidth to accommodate three voice circuits The same process applies if the protocol detected is Video When both VoIP and Video are requested the bandwidth required for the Video is used and the VoIP which has priority shares the SCPC with the Video Chapter 2 Using Parameter Editor 2 41 Vipersat 2 42 Once the VMS receives the request to switch it determines if there is a free demodulator and whether there is bandwidth space available to handle the requested application If the resources are available the VMS then performs the switch Applications are streaming data The remote CDM 570 570L looks at the streaming data flow until it sees a break in the data exceeding 10 seconds Once a break is detected the CDM 570 570L presumes that the application is termi nated or has malfunctioned drops the carrier and makes the bandwidth resources available for another service Video Switching Select the Video switch detection option to configure the CDM 570 570L to recognize the presence of a video signal and request a switch by the VMS Voice Switching Select the Voice switch detection option to configure the CDM 570 570L to recognize the presence of a voice signal and request a switch by the VMS Quality of Service Switching Select the Qual
90. the motherboard or be an expansion card Some computers e g servers have multiple NICs each identified by a unique IP address Network Management System Network Operation Center Has access to any earth station installed using the VIPERSAT Management System VMS A NOC can remotely interrogate control and log network activities Network Processor O Outdoor Unit In a VSAT system the RF components transceiver are usually installed outdoors on the antenna structure itself and are thus referred to as an ODU The ODU typically includes the BUC and LNB and is connected to the IDU modem by the IFL cabling CDM 570 L CDD 56X Parameter Editor User Guide PLDM PSK PSTN QAM QoS QPSK Remote RF RFC P Path Loss Data Message A packet message that is sent by older Vipersat modems e g CDM 570 L to the VMS every sixty seconds providing status update and operating parameter Information Phase Shift Keying A digital modulation scheme that conveys data by chang ing the phase of a base reference signal the carrier wave Different PSKs are used depending on the data rate required Examples are binary phase shift keying BPSK or 2 PSK which uses two phases and quadrature phase shift keying QPSK which uses four phases Public Switched Telephone Network The world s public circuit switched telephone network digital and analog and includes mobile as well as land line voice and data communica
91. tions Q Quadrature Amplitude Modulation A digital modulation technique in which the amplitude of two carrier waves is changed to represent the data signal These two waves are 90 degrees out of phase with each other Quality of Service Quadrature Phase Shift Keying A digital modulation technique in which the carrier is phase shifted 90 or 180 degrees With four phases QPSK can encode two bits per symbol twice the rate of BPSK However it also uses twice the power Also known as 4 PSK or 4 QAM R Satellite earth site that links to a central network site Hub Radio Frequency A generic term for signals at frequencies above those used for baseband or IF Request For Comment The official publication channel for Internet standards such as communication protocols issued by the Internet Engineering Task Force IETF Appendix A Glossary A 7 RIP RS 232 RTP Rx SCPC SIP SNG SNMP SOTM Star Topology STDMA Streamload Protocol SUM Routing Information Protocol A common electrical physical standard issued by the IEEE used for point to point serial communications up to approximately 115 kb s Real time Transport Protocol A standardized packet format for delivering real time applications such as audio and video over the Internet Frequently used in streaming media systems videoconferencing and VolP Receive S Single Channel Per Carrier A satellite communicatio
92. uto negotiation available HDLC Addressing Mode The drop down menu for HDLC High level Data Link Control Addressing Mode shown in figure 2 4 displays five available modes only the first four modes are displayed for a CDD 56X Small Network Mode Large Network Mode Point to Point Mode Vipersat Addressing Managed Switch Mode Caution Only the Vipersat Addressing mode configures the target modem to communicate in a Vipersat network Selecting any other mode will remove the unit from the network HDLC Addressing Mode Vipersat Addressing Small Network Mode q Large Network Mode Point To Point Mode N Vipersat Addressin DHCP Server IP Address Manaced Switch Mode Dynamic Buffer Latency 5 sec Figure 2 4 HDLC Addressing Mode Menu When using the ParamEditor to configure a modem for operation in an environ ment other than a Vipersat network refer to the unit s documentation for details on setting and configuring the device Managed Switch Mode The Managed Switch mode uses a bridging mode which is not supported in Vipersat networks Refer to the CDM 570 570L s documentation for availabil ity and detailed information on this mode CDM 570 L CDD 56X Parameter Editor User Guide Network the target CDM 570 570L When the OK button is clicked the modem will be immediately disconnected from the VMS The VMS cannot communicate with or control a CDM 570 570L which is operating in the bridgi
93. wered from LAN clients before the Ethernet interface will no longer forward data for that IGMP group 2 22 CDM 570 L CDD 56X Parameter Editor User Guide Network For example assume that a modem router has the IGMP Query Period set to 60 seconds and the Number of Missed Responses set to 3 If a client Joins an IGMP group then the service to that group will not be discontinued until no clients respond to a query from the unit for a period of 60x3 180 seconds Modem as IGMP Client options in the Modem as IGMP Client dialog box will be grayed out and Note If the unit is a CDD 56X it cannot operate as an IGMP client and the NOTE unavailable CDM570L ParamEdit CDM5XX 5 4 dll Network gt Routing Modem as IGMP Client QoS IGMP Server Recognize IGMP Queries Managed Switch VLAN Version Vipersat Gy Cy STDMA Switching Application Router Alert Option for V1 Report TOS List Load Unsolicited Report Interval 25 sec Hitless DPC Home State Modulator Demodulator Admin Access SNMP SMTP Compression Triple DES Maintenance Cancel Figure 2 17 IGMP Client dialog Recognize IGMP Queries The Recognize IGMP Queries box determines whether the modem router will respond to periodic queries from an IGMP server that publishes a request to join a specified multicast group If this box is selected the unit will respond to an IGMP query by requesting to join a multicast group published by the se
94. witching Data Rate Job Type 0 Timeout 0 seconds Figure 2 11 Add QoS Rule Max Priority Mode Selecting the QoS Switching check box at the bottom of the dialog enables entry of values into the Type Data Rate and Timeout fields to be used to determine when a switch will occur Note This parameter will not be active selectable unless the modem is a Remote and Automatic Switching is enabled QoS Application Switching must be enabled also for QoS switching to occur See the section Switching on page 2 39 In each of these modes there exists a Default rule at the top of the table that is preconfigured and can not be removed This rule can be modified but the only active parameter is Enable Filtering Protocol Clicking the Protocol drop down menu displays the available protocols Select the appropriate protocol from the list as shown in figure 2 12 When selecting a protocol for a QoS Rule be aware that the modem router allows a very broad selection such as IP or a very specific protocol For exam ple RTP traffic can consist of UDP portion for voice or video and a TCP portion for RTP signaling These could have separate QoS Rules created or all be included in a single Rule by selecting RTP as the protocol Chapter 2 Using Parameter Editor 2 15 Network 2 16 Add Quality of Service Rule 1 Protocol IV Enable wRED Priority J Enable Filtering Cancel Subnet Bits Al 12 Maximum 2

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