Avaya Configuring SMDS User's Manual
Contents
1. E Router Single group address for a single SNI Individual Address C14089991000FFFF Group and ARP address E18008881000FFFF Individual address aC14089991001FFFF Single Individual address Group and ARP address rou E18008881000FFFF drese C14089991003FFFF fora Group and ARP address single SNI E18008881000FFFF Individual address C14089991002FFFF Group and ARP address E18008881000FFFF bw address 128 1 1 1 Addr mask 255 255 255 0 IP address 128 1 1 4 Addr mask 255 255 255 0 IP address 150 50 1 1 Addr mask 255 255 255 0 This side shows one Group address with many Individual and IP addresses Logical IP interface Physical SMDS line Figure 2 5 Multinet Configuration IP address 128 1 1 2 Addr mask 255 255 255 0 IP address 150 50 1 2 Addr mask 255 255 255 0 This side shows one Group address with one Individual address and many IP addresses SMS0007A 2 6 308643 14 00 Rev 00 Implementation Notes To configure multinet follow these steps 1 In your SMDS configuration parameters enter addresses in the Group Address ARP Address and Individual Address parameters described in Chapter 3 of this book 2 Inyour IP interface configuration2. Configuring SMDS By associating or pairing a different SMDS group address with each IP address you achieve multigrouping A multigroup configuration enables you to use one SMDS physical line SNI to connect many nodes located on different subnetworks It also allows you to limit broadcast and multicast traffic such as Routing Information Protocol RIP updates Address Resolution Protocol ARP updates and Open Shortest Path First OSPF messages to their respective SMDS groups For example in Figure 2 7 two separate subnetworks share the same SNI The routers in these networks use RIP updates to communicate network information The routers broadcast RIP updates to each node on the network Because each RIP network shares an SNI the only way to prevent RIP updates from interfering with one another is to isolate these subnetworks by associating each one with a different SMDS group address 2 8 308643 14 00 Rev 00 Implementation Notes K IP address 128 1 1 1 Addr mask 255 255 255 0 Single group addresses for a single SNI Individual address C14089991000FFFF Group and ARP address E18008881000FFFF Individual address Individual address C14089991001FFFF C14089991003FFFF Group and ARP address Group and ARP address E18008881000FFFF E18008881000FFFF Multiple Group addresses for a single SNI Multiple Group
3. EE m network O O m T L I Router DSU CSU DSU CSU Router DXI protocol defines the router and DSU CSU interface Figure 1 4 SMS0005A DXI Protocol For low speed SMDS 56 Kb s to 64 Kb s the DXI is extended out to the SMDS network In this case you do not need a special SMDS DSU CSU PDU Assembly SMDS PDU assembly begins when the router receives a network generated packet The router takes the entire packet and encapsulates it within a 36 byte header containing addressing length and control information and a 4 byte trailer containing a CRC value thereby creating an SMDS Level 3 PDU Figure 1 5 308643 14 00 Rev 00 SMDS Overview The router next prepares the Level 3 PDU for transmission to the DSU CSU by encapsulating it within a DXI header and trailer that provide control information Upon receiving the DXI packet the DSU CSU strips the DXI header trailer and divides the Level 3 PDU into fixed length 44 byte units called cells The DSU CSU encapsulates these cells within a 7 byte header and 2 byte trailer to form Level 2 PDUs Finally the DSU CSU inserts an additional four bytes of framing information between each Level 2 PDU and transmits the framed cells across a Digital S
4. enter the same addresses that you entered in the SMDS parameters in the previous step The equivalent IP parameters are SMDS Group Address SMDS ARP Req Address and MAC Address Refer to Configuring IP Services for information about these IP parameters 3 Add anew IP interface with a unique IP address which includes a network subnet and host address 4 Enter the same Group Address ARP Address and Individual Address that you entered in Step 2 for this new IP interface Note You may also configure many individual addresses for an SMDS group address but ensure that each individual address within a group is unique Multigroup Multigroup is a feature of the Internet Protocol IP that enables you to configure multiple SMDS group addresses on the same SNI which is the access interface to the SMDS network The router implements multigroup according to RFC 1209 For information about IP refer to Configuring IP Services Figure 2 6 shows a multigroup configuration Group address Individual address IP address Group address Individual address IP address Group address Individual address IP address SMS0009A Figure 2 6 Multigrouping SMDS and IP Addresses Once you configure an SMDS group address you can then assign this group address to at least one IP subnetwork An IP address identifies the subnetwork 308643 14 00 Rev 00 2 7
5. or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Statement of Conditions In the interest of improving internal design operational function and or reliability Nortel Networks NA Inc reserves the right to make changes to the products described in this document without notice Nortel Networks NA Inc does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Portions of the code in this software product may be Copyright 1988 Regents of the University of California All rights reserved Redistribution and use in source and binary forms of such portions are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation advertising materials and other materials related to such distribution and use acknowledge that such portions of the software were developed by the University of California Berkeley The name of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED AS IS AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHA
6. The Technical Manuals section lists available printed documentation sets xiv 308643 14 00 Rev 00 How to Get Help Preface If you purchased a service contract for your Nortel Networks product from a distributor or authorized reseller contact the technical support staff for that distributor or reseller for assistance If you purchased a Nortel Networks service program contact one of the following Nortel Networks Technical Solutions Centers Technical Solutions Center Telephone Number Billerica MA 800 2LANWAN 800 252 6926 Santa Clara CA 800 2LANWAN 800 252 6926 Valbonne France 33 4 92 96 69 68 Sydney Australia 61 2 9927 8800 Tokyo Japan 81 3 5402 7041 308643 14 00 Rev 00 XV LAN 1 SMDS SNI J uu 1 Chapter 1 SMDS Overview Switched Multimegabit Data Service SMDS is a public high speed packet switched network service that enables you to connect local area networks LANs across wide area networks WANs SMDS technology combines cell relay technology and IEEE Standard 802 6 the link control protocol standard that controls cell transmission To send information across the network SMDS divides data into fixed 53 byte cells The use of cell technology makes SMDS well suited for traffic that consumes high bandwidth for short periods of time Figure 1 1 illustrates an SMDS network In this illustration LAN 1 communicates to LANs 2 and 3 thr
7. damaged as a result of accident misuse or abuse The Licensee assumes all responsibility for selection of the Software to achieve Licensee s intended results and for the installation use and results obtained from the Software Nortel Networks does not warrant a that the functions contained in the software will meet the Licensee s requirements b that the Software will operate in the hardware or software combinations that the Licensee may select c that the operation of the Software will be uninterrupted or error free or d that all defects in the operation of the Software will be corrected Nortel Networks is not obligated to remedy any Software defect that cannot be reproduced with the latest Software release These warranties do not apply to the Software if it has been i altered except by Nortel Networks or in accordance with its instructions ii used in conjunction with another vendor s product resulting in the defect or iii damaged by improper environment abuse misuse accident or negligence THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Licensee is responsible 308643 14 00 Rev 00 iii for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files data or programs 4
8. BayRS Version 14 00 Part No 308643 14 00 Rev 00 September 1999 4401 Great America Parkway Santa Clara CA 95054 Configuring SMDS NORTEL NETWORKS Copyright 1999 Nortel Networks All rights reserved Printed in the USA September 1999 The information in this document is subject to change without notice The statements configurations technical data and recommendations in this document are believed to be accurate and reliable but are presented without express or implied warranty Users must take full responsibility for their applications of any products specified in this document The information in this document is proprietary to Nortel Networks NA Inc The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license A summary of the Software License is included in this document Trademarks NORTEL NETWORKS is a trademark of Nortel Networks Bay Networks is a registered trademark and ASN BayRS BayStack and BayStream are trademarks of Nortel Networks All other trademarks and registered trademarks are the property of their respective owners Restricted Rights Legend Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to
9. E AND EXCLUSIVE AGREEMENT BETWEEN NORTEL NETWORKS AND LICENSEE WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST NORTEL NETWORKS UNLESS NORTEL NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT iv 308643 14 00 Rev 00 Contents Preface nes Ie erii eM O o OE DL A xi TEBAS EE xii PO E bep EXE rata d rS rhet aa Fra er daa E bebe Hua cap RR Fa P RR xiii Hard Gopy Technical BASES sos ke a dues Sox de xe cra Ox d xiv a to Get HEI aan is XV Chapter 1 SMDS Overview How SMDS Sends LAN Data over WANS ciere ette tetto in Ert tns asa Rana R RE raa 1 2 SMDS meraca PYOIBODE sisi a Meanie pou DER n 1 2 Data Exchange Interlace Pr garsa nasara rna aaia Saga aE 1 4 PIL AS ue eR 1 4 SMDS Individual AddISSEBS is 1 7 SMDS GrP icc obe GO 1 7 For More Intermation About SMDS sucias 1 7 Chapter 2 Implementation Notes Requirements for the Router and the DSU CSU eese 2 3 EPS E A TTE 2 3 Local Management Interface ina ds 23 Protocols Supported DY SMDS cciacdentesccesancerasccsonnicceseenedescaemagiccesasursdacaostniasamadaumpactacantens 2 4 Prionty of Heartbeat Poll Messages an cesare A AE a A 2 4 MOUNET eiii OS diet did em PE T T 2 5 MOUTO UD onipin nn T T TE 2 7 Configuring Synchronous Lines for S
10. F Group Address E1FFFFFFFFFFFFFF Arp Address E1FFFFFFFFFFFFFF Figure 3 1 SMDS Configuration Window 3 2 308643 14 00 Rev 00 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Enabling SMDS Individual Address Configuration Manager Protocols SMDS CIFFFFFFFFFFFFFF A complete SMDS E 164 address specified by the SMDS subscription agreement that you have with your SMDS provider Provides a MAC layer address Enter the complete SMDS E 164 address for example C15085558734FFFF To configure this parameter for a multigroup or multinet configuration refer to Chapter 2 for instructions For information about IP refer to Configuring IP Services 1 3 6 1 4 1 18 3 5 9 3 1 5 Group Address Configuration Manager Protocols SMDS EIFFFFFFFFFFFFFF A complete SMDS E 164 address specified by the SMDS subscription agreement that you have with your SMDS provider Provides a MAC layer multicast address for this SMDS interface Enter the complete SMDS E 164 group address for example E16175552876FFFF To configure this parameter for a multigroup or multinet configuration refer to Chapter 2 for instructions For information about IP refer to Configuring IP Services 1 3 6 1 4 1 18 3 5 9 3 1 6 308643 14 00 Rev 00 3 3 Configuring SMDS Parameter Path Default Options Functio
11. FFF To configure this parameter for a multinet or multigroup configuration refer to Chapter 2 for instructions 1 3 6 1 4 1 18 3 5 9 3 1 6 ARP Address Configuration Manager gt Protocols gt SMDS gt Interfaces EIFFFFFFFFFFFFFF A complete SMDS E 164 address specified by the SMDS subscription agreement that you have with your SMDS provider Provides an address resolution multicast address The Configuration Manager fills in this field based on your original SMDS interface configuration Enter the new SMDS E 164 address for example E16175552876FFFF To configure this parameter for a multinet or multigroup configuration refer to Chapter 2 for instructions 1 3 6 1 4 1 18 3 5 9 3 1 7 4 4 308643 14 00 Rev 00 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Editing SMDS Parameters Heartbeat Poll Configuration Manager Protocols SMDS Interfaces Enable Enable Disable Enables or disables DXI heartbeat polling DXI Version 3 2 provides a heartbeat polling mechanism which verifies the integrity of the router DSU connection To implement heartbeat polling the router transmits a constant stream of keep alive messages to the DSU The DSU in turn sends an acknowledgment to the router Set to Enable to enable heartbeat polling Set to Disable if the DSU CSU in your network does not sup
12. Interface LMI enabling 4 6 purpose of 2 3 low speed SMDS description of 1 2 implementing 2 1 MIB object ID 3 1 multigroup description 2 7 sample configuration 2 8 setting parameters for 2 10 multinet description 2 5 sample configuration 2 5 setting parameters for 2 7 P parameters ARP Address 3 4 4 4 editing 4 1 to 4 7 Enable 4 3 Enable Incoming Address Screening 4 7 Group Address 3 3 4 4 Heartbeat Poll 4 5 Heartbeat Poll Down Count 4 6 Heartbeat Poll Interval 4 5 Individual Address 3 3 4 3 LMI Network Mgmt 4 6 product support xv protocol data unit PDU assembly 1 4 definition 1 2 protocols supported by SMDS 2 4 publications hard copy xiv Index 2 R router requirements for SMDS 2 3 S SMDS access classes description 1 2 addresses 1 7 defaults A 1 deleting from the router 4 7 enabling 3 1 to 3 4 implementation notes 2 1 to 2 10 information sources 1 7 LMI 2 3 overview of 1 1 to 1 7 router requirements for 2 3 sending data over WANs 1 2 supported protocols 2 4 SMDS Interface Protocol SIP definition 1 2 speeds for SMDS 1 2 subscriber network interface SNI definition 1 2 2 1 support Nortel Networks xv Switched Multi megabit Data Service See SMDS synchronous line configuration 2 10 T technical publications xiv technical support xv text conventions xii 308643 14 00 Rev 00
13. Limitation of liability IN NO EVENT WILL NORTEL NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE EVEN IF NORTEL NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF NORTEL NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO NORTEL NETWORKS FOR THE SOFTWARE LICENSE 5 Government Licensees This provision applies to all Software and documentation acquired directly or indirectly by or on behalf of the United States Government The Software and documentation are commercial products licensed on the open market at market prices and were developed entirely at private expense and without the use of any U S Government funds The license to the U S Government is granted only with restricted rights and use duplication or disclosure by the U S Government is subject to the restrictions set forth in subparagraph c 1 of the Commercial Computer Software Restricted Rights clause of FAR 52 227 19 and the limitations set out in this license for civilian agencies and subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause of DFARS 252 227 7013 for agencies of the Department of Defense or their successors whichever is applicable 6 U
14. MDS 1 iuuentus ic 2 10 308643 14 00 Rev 00 V Chapter 3 Enabling SMDS HE9 Ls Id Bosnia 3 1 Enabling SMDS 00 an NHRC iaa RA 3 2 Chapter 4 Editing SMDS Parameters Editino SMDS Inienace Parameters ani 4 2 SMDS Interface Parameter Descriptions see eee eee ee eee eee 4 3 Deleting SMDS from iie ROUTED eem 4 7 Appendix A SMDS Default Settings Index vi 308643 14 00 Rev 00 Figures Figure 1 1 SMOS Sample NeBNOrK sic bci cero bett er cabra tuta t E E REP RR hoa X RR 1 1 Figure 1 2 SMDS Interface Protocol Stack sssssssssssssseeeeeene 1 3 Fige TS SMDS Leusita PDU m 1 3 Pius A bar Laon ep pen da 1 4 Figure 1 5 DXI Packet Assembly ne iaiia iias TE s 1 6 Figure 2 1 Access to SMDS Network via a Router and DSU CSU 2 1 Figure 2 2 Low Speed Access to SMDS Network sees eee eee 2 2 Figure 2 3 Low Speed Access to SMDS Network via a Low Speed DSU 2 2 Figure 2 4 SMDS and IP Addresses for a Multinet Configuration 2 5 Figure 2 5 Mutineer ConfigU UD rv rr 2 6 Figure 2 6 Multigrouping SMDS and IP Addresses sss sees sees eee eee ee eee 2 7 Figure 27 Multigroup GCORNQURAIION asis i 2 9 Figure 3 1 SMDS Configuration Window sss esse sees eee eee eee eee m 3 2 Figure 4 1 Configuration Manager Window sssesseseseeeenmeennen nnn 4 1 Figure 4 2 SMDS Interface L
15. NTABILITY AND FITNESS FOR A PARTICULAR PURPOSE In addition the program and information contained herein are licensed only pursuant to a license agreement that contains restrictions on use and disclosure that may incorporate by reference certain limitations and notices imposed by third parties ii 308643 14 00 Rev 00 Nortel Networks NA Inc Software License Agreement NOTICE Please carefully read this license agreement before copying or using the accompanying software or installing the hardware unit with pre enabled software each of which is referred to as Software in this Agreement BY COPYING OR USING THE SOFTWARE YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH NORTEL NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE If you do not accept these terms and conditions return the product unused and in the original shipping container within 30 days of purchase to obtain a credit for the full purchase price 1 License Grant Nortel Networks NA Inc Nortel Networks grants the end user of the Software Licensee a personal nonexclusive nontransferable license a to use the Software either on a single computer or if applicable on a single authorized device identified by host ID for which it was originally acquired b to copy the Software solely for backup purposes in support of authorized use of the Software and c to use and copy the ass
16. Tesink Definitions of Managed Objects for the DS3 Interface Type RFC 1233 Network Information Center NIC SRI International Menlo Park California May 1991 Klessig R and K Tesink MDS Wide Area Data Networking with Switched Multi megabit Data Service Englewood New Jersey Prentice Hall Inc 1995 Piscitello D and J Lawrence The Transmission of IP Datagrams over the SMDS Service RFC 1209 Network Information Center NIC SRI International Menlo Park California March 1991 SMDS Interest Group SMDS Data Exchange Interface Protocol Revision 3 2 Technical Specification SIG TS 001 1991 October 1991 SMDS Interest Group MDS DXI Local Management Interface Technical Specification SIG TS 002 1992 May 1992 The following publications provide a less technical introduction to SMDS Davidson R and N Muller 7he Guide to SONET Planning Installing amp Maintaining Broadband Networks Telecom Library Inc 1991 Goldstein F ISDN in Perspective Reading Mass Addison Wesley 1992 1 8 308643 14 00 Rev 00 Chapter 2 Implementation Notes This chapter provides information about the Nortel Networks implementation of SMDS Specifically it contains information about the router s DXI protocol requirements and the Local Management Interface protocol This chapter also supplies details on the use of SMDS group and individual addresses for multinet and multigroup configurations To implement high speed SMDS yo
17. addresses for a single SNI Individual address Individual address C14089991002FFFF C14089991004FFFF Group and ARP address Group and ARP address E18008882000FFFF E18008882000FFFF IP address 128 1 1 3 Addr mask 255 255 255 0 IP address 128 1 1 2 Addr mask 255 255 255 0 BS IP address 150 50 1 2 Addr mask 255 255 255 0 IP Address 150 50 1 1 Addr mask 255 255 255 0 Logical IP interface Physical SMDS line SMS0008A Figure 2 7 Multigroup Configuration 308643 14 00 Rev 00 2 9 Configuring SMDS To configure multigroup follow these steps 1 In your SMDS configuration parameters enter addresses in the Group Address ARP Address and Individual Address parameters described in Chapter 3 of this book 2 Inyour IP interface configuration enter the same addresses that you entered in the SMDS parameters in the previous step The equivalent IP parameters are SMDS Group Address SMDS ARP Req Address and MAC Address Refer to Configuring IP Services for information about these IP parameters 3 Add a new IP interface with a unique IP subnetwork address This address should include a network subnet and host address 4 Enter a new Group Address ARP Address and Individual Address for this new IP interface The IP interface parameters override t
18. an SMDS switch to broadcast information such as routing information packets RIP and address resolution packets ARP from the router to multiple destination nodes SMDS individual addresses within the SMDS group identify these nodes Like an SMDS individual address the group address is a media access control layer MAC address in an E 164 format An E 164 address is a 64 bit address which for SMDS is similar to a phone number For example the phone number 508 555 1144 becomes individual address El 50 85 55 11 44 FF FF The E indicates that the address is a group address and the 1 is a standard prefix For More Information About SMDS The following documents provide technical details on SMDS and DXI protocol design and implementation Baker F and C Kolb Definitions of Managed Objects for the DSI Interface Type RFC 1232 Network Information Center NIC SRI International Menlo Park California May 1991 Bellcore Generic Requirements for SMDS Customer Network Management Service Technical Advisory TA TS V 001062 Issue 2 February 1992 Bellcore Generic System Requirements in Support of Switched Multi Megabit Data Service Technical Reference TR TSV 000772 Issue 1 May 1991 308643 14 00 Rev 00 1 7 Configuring SMDS Bellcore Local Access System Generic Requirements Objectives and Interfaces in Support of Switched Multi Megabit Data Service Technical Reference TR TS V 000773 Issue 1 June 1991 Cox T and K
19. bold text Indicates command names and options and text that you need to enter Example Enter show ip alerts routes Example Use the dinfo command italic text Indicates file and directory names new terms book titles and variables in command syntax descriptions Where a variable is two or more words the words are connected by an underscore Example If the command syntax is show at valid route valid routeis one variable and you substitute one value for it screen text Indicates system output for example prompts and system messages Example Set Trap Monitor Filters xii 308643 14 00 Rev 00 separator gt vertical line Acronyms Preface Shows menu paths Example Protocols gt IP identifies the IP option on the Protocols menu Separates choices for command keywords and arguments Enter only one of the choices Do not type the vertical line when entering the command Example If the command syntax is show ip alerts routes you enter either show ip alerts or show ip routes but not both This guide uses the following acronyms ARP ATM CRC DSU CSU DS1 DS3 DXI HSSI IEEE IP IPX LAN LMI MAC MAN OSI OSPF Address Resolution Protocol Asynchronous Transfer Mode Cyclic Redundancy Check Digital Service Unit Channel Service Unit Digital Service Level 1 Digital Service Level 3 data exchange interface high speed serial interface Institute of Electrical and Elec
20. byte PDUs Level 3 Prepares Level 2 PDUs for the Physical Medium SMS0002A Figure 1 2 SMDS Interface Protocol Stack SIP specifies that the SMDS source and destination addresses reside in the Level 3 PDU header Figure 1 3 Each header contains a MAC level address in an E 164 address format E 164 formats are 64 bits long and provide both individual and multicast addresses Network switches use the address information in the header to route the PDU to its destination Header Trailer gE AC LEE LL pese SMS0003A Figure 1 3 SMDS Level 3 PDU One or more SMDS devices for example DSUs and routers can perform the tasks of the three SIP levels as described in the next section 308643 14 00 Rev 00 1 3 Configuring SMDS Data Exchange Interface Protocol For SMDS high speed access classes that is speeds from 1 2 Mb s to 34 Mb s the SMDS Interest Group SIG wanted to simplify the integration of SMDS into existing network equipment and to hasten SMDS into the market To do this they divided the functions defined by the SIP levels between devices that handle local network packets for example a router and devices that interface with the digital services provided by common carriers a DSU CSU The Data Exchange Interface DXI protocol defines this division of tasks and describes the router and DSU CSU relationship Figure 1 4 Refer to the next section for more information SMDS
21. e SMDS on this interface MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID rather than delete it Set this parameter to Enable if you want to re enable SMDS 1 3 6 1 4 1 18 3 5 9 3 1 2 Individual Address Configuration Manager gt Protocols gt SMDS gt Interfaces CIFFFFFFFFFFFFFF A complete SMDS E 164 address specified by the SMDS subscription agreement that you have with your SMDS provider Provides a MAC layer address The Configuration Manager fills in this field based on your original SMDS interface configuration Enter the new SMDS E 164 address for example C15085558734FFFF To configure this parameter for a multinet or multigroup configuration refer to Chapter 2 for instructions 1 3 6 1 4 1 18 3 5 9 3 1 5 308643 14 00 Rev 00 4 3 Configuring SMDS Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Group Address Configuration Manager gt Protocols gt SMDS gt Interfaces EIFFFFFFFFFFFFFF A complete SMDS E 164 address specified by the SMDS subscription agreement that you have with your SMDS provider Provides a MAC layer multicast address for this SMDS interface The Configuration Manager fills in this field based on your original SMDS interface configuration Enter the new SMDS E 164 group address for example E16175552876F
22. ervice Level 1 DS1 or DS3 connection to the SMDS network Figure 1 5 shows the assembly of SMDS cells as specified by the DXI 308643 14 00 Rev 00 1 5 Configuring SMDS Level 3 encapsulation Level 2 Segmentation DSU CSU Switch receives LAN packet PAYLOAD i PAYLOAD 96 byte header 4 byte trailer i I PAYLOAD o Z S DXI header DXI trailer DXI mw T mu mm 4 byte trailer T PAYLOAD PAYLOAD PAYLOAD 7 byte 44 byte 2 byte 7 byte 44 byte 2 byte 7 byte 44 byte 2 byte header cell trailer header cell trailer header cell trailer PAYLOAD eg PAYLOAD sd PAYLOAD Framing field Framing field I U U U v SMS0004A Figure 1 5 DXI Packet Assembly 1 6 308643 14 00 Rev 00 SMDS Overview SMDS Individual Addresses An SMDS individual address is a unique address that the SMDS provider assigns to an SNI Specifically an individual address is a media access control layer MAC address in an E 164 format An E 164 address is a 64 bit address which for SMDS is similar to a phone number For example the phone number 617 555 3923 becomes individual address C161 75 55 39 23 FF FF The C indicates that the address is an individual address and the 1 is a standard prefix There can be up to 16 individual addresses for one SNI SMDS Group Addresses An SMDS group address is one address that instructs
23. es Requirements for the Router and the DSU CSU The next sections provide configuration requirements for the router and the DSU CSU to implement high speed SMDS DXI Protocol Requirements Version 3 2 of the DXI protocol manages the data exchange between the router and the DSU CSU Because the router does not support earlier DXI versions the DSU CSU must support DXI Version 3 2 DXI Version 3 2 provides an optional heartbeat poll mechanism to periodically verify the router and DSU CSU connection Be sure to enable heartbeat polling on the DSU CSU The DXI also provides support for both 16 bit and 32 bit cyclic redundancy checks CRCs Network devices use CRCs to check data for transmission errors When the router or DSU CSU receives data each reads the CRC character and compares the value it calculates to the actual CRC character in the data packet Ensure that the CRC values for the router and the DSU CSU match This means that if you set the router to 16 bit CRCs you must set the DSU CSU to 16 bit CRCs If necessary you can modify the CRC values 16 bit or 32 bit for both synchronous and HSSI connections Local Management Interface The Local Management Interface LMI protocol works with the DXI to enable the router and the DSU CSU to exchange management information The LMI uses a subset of the Simple Network Management Protocol SNMP to provide for router management queries DSU CSU responses to queries and DSU CSU generated as
24. es Disable Enable Disable Enables or disables LMI network management LMI works with DXI Version 3 2 LMI is an SNMP like protocol that enables the router and the DSU CSU to exchange management information Set to Enable to use the LMI protocol Accept the default Disable if the DSU CSU in your network does not support the LMI Accept the default if you have an ADC Kentrox dual port Daras M ART T1 SMDSU This DSU does not support the LMI protocol Instead rely on heartbeat polling to determine whether the interface between the router and the DSU is active Use the SMDS in band SNMP agent to manage the DSU If you have a single port DataSMART T1 SMDSU accept the default or upgrade the DSU software to revision 1 41 which supports LMI 1 3 6 1 4 1 18 3 5 9 3 1 11 4 6 308643 14 00 Rev 00 Editing SMDS Parameters Parameter Enable Incoming Address Screening Path Configuration Manager gt Protocols gt SMDS gt Interfaces Default Disable Options Enable Disable Function Enables the router to verify the individual and group addresses that it receives in the incoming frames and drop any improperly addressed frames It ensures that the router receives only traffic intended for it If the router rejects an address one of three things may be happening e You did not configure the SMDS addresses according to the numbers the service provider assigned e The network is forwarding traffic to the router unnecessari
25. g Disable 308643 14 00 Rev 00 A 1 A access classes for SMDS 1 2 acronyms xiii addresses group 1 7 used for multigroup 2 7 used for multinet 2 5 individual 1 7 used for multigroup 2 7 used for multinet 2 5 ARP Address parameter 3 4 4 4 C connections to router 2 1 connectivity using heartbeat polling 2 3 conventions text xii customer support xv cyclic redundancy check CRC values 2 3 D Data Exchange Interface DXI protocol description 1 4 requirements for SMDS version supported 2 3 defaults for SMDS parameters A 1 deleting SMDS from the router 4 7 DSU CSU configuration requirements for 2 3 role in SMDS network 1 4 308643 14 00 Rev 00 Index E E 164 addresses for SMDS 1 3 Enable Incoming Address Screening parameter 4 7 Enable parameter 4 3 enabling SMDS 3 1 to 3 4 G Group Address parameter 3 3 4 4 H Heartbeat Poll Down Count parameter 4 6 Heartbeat Poll Interval parameter 4 5 heartbeat poll messages 2 4 Heartbeat Poll parameter 4 5 heartbeat polling for connections 2 3 high speed serial interface HSSI connections 2 1 high speed SMDS description 1 2 implementing 2 1 IEEE Standard 802 6 used by SMDS 1 1 implementation notes 2 1 to 2 10 Individual Address parameter 3 3 4 3 information sources on SMDS 1 7 Index 1 L line configuration See synchronous line configuration LMI Network Mgmt parameter 4 6 Local Management
26. hese same parameters in the SMDS configuration for this and subsequent IP interfaces Configuring Synchronous Lines for SMDS If you enable SMDS on a circuit Site Manager automatically sets the following synchronous line parameters Table 2 1 Synchronous Line Parameter Settings for SMDS Parameter Value BOFL Disable Promiscuous Enable Service Transparent WAN Protocol SMDS For more information about these parameters refer to Configuring and Managing Routers with Site Manager 2 10 308643 14 00 Rev 00 Chapter 3 Enabling SMDS This chapter provides information on how to enable SMDS It assumes you have read Configuring and Managing Routers with Site Manager and that you have 1 Opened a configuration file 2 Specified router hardware if this is a local mode configuration file 3 Selected the link or net module connector on which you are enabling SMDS When you enable SMDS you need to configure only a few parameters The Configuration Manager supplies default values for the remaining parameters If you want to edit these default values refer to Chapter 4 for instructions Using the MIB Object ID For each parameter this chapter and Chapter 4 include path default settings valid parameter options the parameter function instructions for setting the parameter and the Management Information Base MIB object ID The Technician Interface allows you to modify parameters by issuing set and com
27. ion without first obtaining any required export licenses or other governmental approvals Without limiting the foregoing Licensee on behalf of itself and its subsidiaries and affiliates agrees that it will not without first obtaining all export licenses and approvals required by the U S Government i export re export transfer or divert any such Software or technical data or any direct product thereof to any country to which such exports or re exports are restricted or embargoed under United States export control laws and regulations or to any national or resident of such restricted or embargoed countries or ii provide the Software or related technical data or information to any military end user or for any military end use including the design development or production of any chemical nuclear or biological weapons 9 General If any provision of this Agreement is held to be invalid or unenforceable by a court of competent jurisdiction the remainder of the provisions of this Agreement shall remain in full force and effect This Agreement will be governed by the laws of the state of California Should you have any questions concerning this Agreement contact Nortel Networks 4401 Great America Parkway PO Box 58185 Santa Clara California 95054 8185 LICENSEE ACKNOWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT UNDERSTANDS IT AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS LICENSEE FURTHER AGREES THAT THIS AGREEMENT IS THE ENTIR
28. ist Window 1 srs etagr rra cin rn dana tna 4 2 308643 14 00 Rev 00 vii Tables Table 2 1 Synchronous Line Parameter Settings for SMDS 2 10 Table A 1 SMDS Interface Parameters suse ette nuts e nua A 1 308643 14 00 Rev 00 ix Preface If you are responsible for configuring and managing Nortel Networks routers or BayStream platforms read this guide to learn how to customize Nortel Networks software for Switched Multimegabit Data Service SMDS Before You Begin Before using this guide you must complete the following procedures For a new router e Install the router see the installation guide that came with your router e Connect the router to the network and create a pilot configuration file see Quick Starting Routers Configuring BayStack Remote Access or Connecting ASN Routers to a Network Make sure that you are running the latest version of Nortel Networks BayRS and Site Manager software For information about upgrading BayRS and Site Manager see the upgrading guide for your version of BayRS 308643 14 00 Rev 00 xi Configuring SMDS Text Conventions This guide uses the following text conventions angle brackets lt gt Indicate that you choose the text to enter based on the description inside the brackets Do not type the brackets when entering the command Example If the command syntax is ping ip address you enter ping 192 32 10 12
29. lasses 4 Mb s through 34 Mb s are for T3 lines SMDS also offers low speed SMDS classes which operate at fractional T1 E1 speeds 56 Kb s up to 64 Kb s How SMDS Sends LAN Data over WANs LAN data is typically connectionless data This means that it has addressing information in each frame so there is no need for a prior connection between the origination and destination devices WAN data is typically connection oriented data This means that it needs a virtual circuit that is a predefined path across physical lines between the two connection points prior to sending data SMDS provides connectionless data transfer across a wide area network without establishing a logical end to end connection SMDS Interface Protocol The SMDS Interface Protocol SIP defines SMDS addressing formatting framing and error detection requirements The SIP has three levels that are similar to but do not match the protocol layers that make up the OSI protocol model e Level 3 specifies the addressing formatting and encapsulation of packet data referred to as Level 3 PDUs e Level 2 specifies the segmentation of Level 3 Protocol Data Units PDUs into short fixed length SMDS cells referred to as Level 2 PDUs e Level 1 specifies the physical connectivity that enables transmission Figure 1 2 illustrates the SIP protocol stack 308643 14 00 Rev 00 SMDS Overview Level 1 Encapsulates data into PDUs Level 2 Segments data into 53
30. ly Notify the network provider e If the router shares a network entry point with another device the router may be receiving that device s traffic Instructions Set to Enable if you want the router to check incoming addresses and control the calls it receives If not accept the default Disable To determine whether the router is rejecting addresses use the Technician Interface script show smds stats Refer to Using Technician Interface Scripts for more information MIB Object ID 1 3 6 1 4 1 18 3 5 9 3 1 17 Deleting SMDS from the Router To delete SMDS from all router circuits complete the following steps 1 From the Configuration Manager window refer to Figure 4 1 select Protocols gt SMDS gt Delete SMDS The Configuration Manager prompts Do you REALLY want to delete SMDS 2 Click on OK The Configuration Manager returns you to the Configuration Manager window SMDS is no longer configured on the router 308643 14 00 Rev 00 4 7 Appendix A SMDS Default Settings This appendix lists the default settings for SMDS Use the Configuration Manager to edit any of the default settings listed here Table A 1 SMDS Interface Parameters Parameter Default Enable Enable Group Address E1FFFFFFFFFFFFFF ARP Address E1FFFFFFFFFFFFFF Heartbeat Poll Enable Heartbeat Poll Interval 10 seconds Heartbeat Poll Down Count 3 messages LMI Network Mgmt Disable Enable Incoming Address Screenin
31. mit commands with the MIB object ID This process is equivalent to modifying parameters using Site Manager For more information about using the Technician Interface to access the MIB refer to Using Technician Interface Software Caution The Technician Interface does not verify that the value you enter for a parameter is valid Entering an invalid value can corrupt your configuration 308643 14 00 Rev 00 3 1 Configuring SMDS Enabling SMDS on an Interface To enable SMDS on an interface complete the following steps 1 Select SMDS from the WAN Protocols menu this menu appears after you select a link or net module connector that requires a WAN circuit Site Manager automatically enables protocol prioritization when you select SMDS For detailed information on protocol prioritization refer to Configuring Traffic Filters and Protocol Prioritization 2 Click on OK to enable default SMDS The Configuration Manager displays the SMDS Configuration window Figure 3 1 3 Configure the SMDS parameters Individual Address Group Address and ARP Address using the descriptions that follow as a guide 4 When you have configured all the parameters you can do one of the following s Enable default SMDS To do this click on OK e Edit the default values To do this click on Details Refer to Chapter 4 for instructions SMDS CONFIGURATION Cancel OK Details Help Individual Address B1FFFFFFFFFFFFF
32. n Instructions MIB Object ID ARP Address Configuration Manager Protocols SMDS EIFFFFFFFFFFFFFF A complete SMDS E 164 address specified by the SMDS subscription agreement that you have with your SMDS provider Provides an address resolution multicast address Enter the complete SMDS E 164 address for example E16175552876FFFF To configure this parameter for a multigroup or multinet configuration refer to Chapter 2 for instructions For information about IP refer to Configuring IP Services 1 3 6 1 4 1 18 3 5 9 3 1 7 3 4 308643 14 00 Rev 00 Chapter 4 Editing SMDS Parameters This chapter tells you how to edit SMDS parameters for the SMDS interfaces on your router Note You must have already configured at least one SMDS interface on the router to edit SMDS parameters If you have not yet done this or want to add more interfaces see Configuring and Managing Routers with Site Manager Access SMDS parameters from the Configuration Manager window Figure 4 1 See Configuring and Managing Routers with Site Manager for instructions on how to access this window El Configuration Mode local SNMP Agent LOCAL FILE File Name tmp_mnt usr21 techpubs configpj Model Backbone Link Node BLN MIB Version x9 00 Uus Used MIES Description Connectors Leu TEM c MAS COM4 5430 Dual Sync Dual Ethernet COM2 COM1 XCVR2 XCVR1 5720 Single Sync Single Toke 091 TOKEN1 Empty Slot System Re
33. nfigurations enable you to configure one SMDS individual address and one SMDS group address for a single SNI and then associate many logical IP subnetworks with these single SMDS addresses A logical IP subnetwork is a host that is directly connected to the SMDS network A second variation of a multinet configuration allows you to have multiple SMDS individual addresses along with a single SMDS group address by configuring an individual address per IP host address for the same group address For information about IP refer to Configuring IP Services Figure 2 4 shows the two types of multinet configurations Type 1 Single group and individual addresses multiple IP address IP address Group address Individual address 43 IP address aa IP address Type 2 Single group address multiple individual and IP address Individual address IP address Group address Individual address IP address L Individual address IP address SMS0010A Figure 2 4 SMDS and IP Addresses for a Multinet Configuration Figure 2 5 on page 2 6 shows a sample multinet configuration where several IP networks are using one SNI Each side of the network shows a different use of group and individual addresses for connecting to the IP networks A multinet configuration allows for efficient network addressing and a cost effective method of implementing SMDS 308643 14 00 Rev 00 2 5 Configuring SMDS
34. ociated user manual solely in support of authorized use of the Software by Licensee This license applies to the Software only and does not extend to Nortel Networks Agent software or other Nortel Networks software products Nortel Networks Agent software or other Nortel Networks software products are licensed for use under the terms of the applicable Nortel Networks NA Inc Software License Agreement that accompanies such software and upon payment by the end user of the applicable license fees for such software 2 Restrictions on use reservation of rights The Software and user manuals are protected under copyright laws Nortel Networks and or its licensors retain all title and ownership in both the Software and user manuals including any revisions made by Nortel Networks or its licensors The copyright notice must be reproduced and included with any copy of any portion of the Software or user manuals Licensee may not modify translate decompile disassemble use for any competitive analysis reverse engineer distribute or create derivative works from the Software or user manuals or any copy in whole or in part Except as expressly provided in this Agreement Licensee may not copy or transfer the Software or user manuals in whole or in part The Software and user manuals embody Nortel Networks and its licensors confidential and proprietary intellectual property Licensee shall not sublicense assign or otherwise disclose to any third party the S
35. oftware or any information about the operation design performance or implementation of the Software and user manuals that is confidential to Nortel Networks and its licensors however Licensee may grant permission to its consultants subcontractors and agents to use the Software at Licensee s facility provided they have agreed to use the Software only in accordance with the terms of this license 3 Limited warranty Nortel Networks warrants each item of Software as delivered by Nortel Networks and properly installed and operated on Nortel Networks hardware or other equipment it is originally licensed for to function substantially as described in its accompanying user manual during its warranty period which begins on the date Software is first shipped to Licensee If any item of Software fails to so function during its warranty period as the sole remedy Nortel Networks will at its discretion provide a suitable fix patch or workaround for the problem that may be included in a future Software release Nortel Networks further warrants to Licensee that the media on which the Software is provided will be free from defects in materials and workmanship under normal use for a period of 90 days from the date Software is first shipped to Licensee Nortel Networks will replace defective media at no charge if it is returned to Nortel Networks during the warranty period along with proof of the date of shipment This warranty does not apply if the media has been
36. ough a router connected to an SMDS Digital Service Unit Channel Service Unit DSU CSU The DSU CSU changes the frame based data from the router into cells that can then be sent across the SMDS network network ES mu etwor DSU A i SMDS CSU Router switch e mE DSU T3 LAN 3 Router CSU SMDS DSU El S switch CSU Router SNI SNI L EN gt g5 e SMS0001A Figure 1 1 SMDS Sample Network 308643 14 00 Rev 00 1 1 Configuring SMDS The point at which the DSU CSU meets the network is the subscriber network interface SNI This is the access point to the SMDS network Within the switching system of the SMDS network T3 communication lines connect the network switches together Because data traffic and network equipment are different for each SMDS customer SMDS defines several access classes Access classes are speeds at which data travels from the customer site to the network switch SMDS currently offers six network access classes 1 2 Mb s 4 Mb s 10 Mb s 16 Mb s 25 Mb s and 34 Mb s The 1 2 Mb s class is for T1 lines C
37. port heartbeat polling 1 3 6 1 4 1 18 3 5 9 3 1 8 Heartbeat Poll Interval Configuration Manager Protocols SMDS Interfaces 10 seconds 6 to 1023 seconds Specifies the time interval between each heartbeat poll message that the router transmits If you disable heartbeat polling this parameter is nonfunctional Enter the number of seconds between the transmission of heartbeat poll messages Be sure to set this parameter to a value greater than 5 seconds the length of the heartbeat poll acknowledgment timer We recommend that you accept the default value 1 3 6 1 4 1 18 3 5 9 3 1 9 308643 14 00 Rev 00 4 5 Configuring SMDS Parameter Path Default Range Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Heartbeat Poll Down Count Configuration Manager Protocols SMDS Interfaces 3 messages 1 to 1023 messages Specifies the number of heartbeat poll messages that the router will send without acknowledgment from the DSU before it declares the router DSU connection down If you disable heartbeat polling this parameter is nonfunctional Set to the number of unacknowledged heartbeat poll messages that the router will tolerate before taking the router DSU connection down We recommend that you accept the default 1 3 6 1 4 1 18 3 5 9 3 1 10 LMI Network Mgmt Configuration Manager gt Protocols gt SMDS gt Interfac
38. se of Software in the European Community This provision applies to all Software acquired for use within the European Community If Licensee uses the Software within a country in the European Community the Software Directive enacted by the Council of European Communities Directive dated 14 May 1991 will apply to the examination of the Software to facilitate interoperability Licensee agrees to notify Nortel Networks of any such intended examination of the Software and may procure support and assistance from Nortel Networks 7 Term and termination This license is effective until terminated however all of the restrictions with respect to Nortel Networks copyright in the Software and user manuals will cease being effective at the date of expiration of the Nortel Networks copyright those restrictions relating to use and disclosure of Nortel Networks confidential information shall continue in effect Licensee may terminate this license at any time The license will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license Upon termination for any reason Licensee will immediately destroy or return to Nortel Networks the Software user manuals and all copies Nortel Networks is not liable to Licensee for damages in any form solely by reason of the termination of this license 8 Export and Re export Licensee agrees not to export directly or indirectly the Software or related technical data or informat
39. source Module Figure 4 1 Configuration Manager Window 308643 14 00 Rev 00 4 1 Configuring SMDS Editing SMDS Interface Parameters To edit SMDS interface parameters follow these steps 1 Begin at the Configuration Manager window Figure 4 1 2 Select Protocols gt SMDS gt Interfaces The Configuration Manager displays the SMDS Interface List window Figure 4 2 SMDS Interface List Tone Apply Values Help R E Enable ENABLE Individual Address C16175555555F FFF Group Address E15088655555F FFF Arp Address E15085555555F FFF Heartbeat Poll ENABLE Heartbeat Poll Interval 10 Figure 4 2 SMDS Interface List Window 3 Select the interface you want to edit from the scroll box in the SMDS Interface List window 4 Edit the parameters referring to the parameter descriptions following this procedure 5 Click on Apply to save your changes when you are finished Repeat Steps 3 through 5 for each SMDS interface you want to edit 6 Click on Done to exit 4 2 308643 14 00 Rev 00 Editing SMDS Parameters SMDS Interface Parameter Descriptions Use the following descriptions as guidelines when you edit the SMDS interface parameters Parameter Enable Path Configuration Manager gt Protocols gt SMDS gt Interfaces Default Enable Options Enable Disable Function Enables or disables SMDS on this interface Instructions Set to Disable if you want to temporarily disabl
40. tronic Engineers Internet Protocol Internet Packet Exchange local area network Local Management Interface media access control metropolitan area network Open Systems Interconnect Open Shortest Path First 308643 14 00 Rev 00 xiii Configuring SMDS PDU protocol data unit PVCs permanent virtual circuits RIP Routing Information Protocol SIP SMDS Interface Protocol SMDS Switched Multimegabit Data Service SNI subscriber network interface SNMP Simple Network Management Protocol WAN wide area network XNS Xerox Network System Hard Copy Technical Manuals You can print selected technical manuals and release notes free directly from the Internet Go to support baynetworks com library tpubs Find the product for which you need documentation Then locate the specific category and model or version for your hardware or software product Using Adobe Acrobat Reader you can open the manuals and release notes search for the sections you need and print them on most standard printers You can download Acrobat Reader free from the Adobe Systems Web site www adobe com You can purchase selected documentation sets CDs and technical publications through the collateral catalog The catalog is located on the World Wide Web at support baynetworks com catalog html and is divided into sections arranged alphabetically e The CD ROMs section lists available CDs e The Guides Books section lists books on technical topics e
41. u need a Nortel Networks router and an SMDS DSU CSU that provides DS1 or DS3 based access to the switched SMDS network A synchronous or high speed serial interface HSSI physically connects the router and the DSU CSU Figure 2 1 l DSU CSU Router HSSI or Sychronous interface SMS0006A Figure 2 1 Access to SMDS Network via a Router and DSU CSU The router also supports low speed SMDS through the SNI and DXI specifications standardized by the SMDS Interest Group If you are running low speed SMDS you can extend the DXI to the SMDS network thereby eliminating the need for a special SMDS DSU CSU Any synchronous interface including MCT1 or MCEI link modules physically connects the router and the network Figure 2 2 308643 14 00 Rev 00 2 1 Configuring SMDS J Router Synchronous or MCT1 MCE1 interface Low speed only SMS0011A Figure 2 2 Low Speed Access to SMDS Network Another low speed SMDS option is to use a low speed DSU CSU to connect to the network In this case a V 35 cable physically connects the router to the DSU CSU Figure 2 3 ES Low Speed Router DSU CSU V 35 interface SMS0012A Figure 2 3 Low Speed Access to SMDS Network via a Low Speed DSU 2 2 308643 14 00 Rev 00 Implementation Not
42. ynchronous trap events Before enabling the LMI on the router ensure that the DSU CSU supports this protocol and that you enable it on the DSU CSU 308643 14 00 Rev 00 2 3 Configuring SMDS Protocols Supported by SMDS SMDS can operate with the following protocols e AppleTalk e APPN Bridge including Spanning Tree DECnetIV DLSw e Internet Protocol IP including Address Resolution Protocol ARP support Internet Packet Exchange IPX LLC2 Native Mode LAN Source Routing with Nortel Networks 8101 encapsulation Source Routing with Spanning Tree VINES e Xerox Network System XNS Note SMDS does not support OSI Priority of Heartbeat Poll Messages When you select SMDS on a circuit the router automatically assigns the highest priority to heartbeat poll and LMI messages that it sends to the DSU CSU The heartbeat poll and LMI messages must have priority over other data to ensure that during heavy traffic conditions the link stays up and allows these messages to get through to the DSU CSU 2 4 308643 14 00 Rev 00 Implementation Notes Multinet Multinet a feature of the Internet Protocol IP allows you to support many IP networks over one SMDS line by allowing many hosts on a single logical IP subnetwork A multinet network is economical because you do not have to purchase as many SMDS group addresses from your SMDS provider as you might with other configurations Multinet co
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