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D-Link DES-3208 User's Manual

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1. L 10100 M PORTS MDL X UPLINK PORT MI LED INDICATORS CON SOLE PORT Figure 3 1 Front panel view of the DES 3208 Switch 8 high performance N way MDI X ports all operating at 10 100 Mbps for connection to servers and hubs All ports can be auto negotiated between 10Mbps or 100Mbps 10 Identifying External Components 10 100 Fast Ethernet Switch User s Guide Port 2x Port number two is a shared connection with the Media Independent Interface port in the back of the Switch Note that whenever there is a connection at the MII port port 2x is unavailable for connection to other devices Uplink MDI II media dependent interface port for uplink to another switch hub or repeater RS 232 DCE console port for diagnosing the Switch via a connection to a PC and Local Console Management Comprehensive LED indicators that display the conditions of the Switch and status of the network A description of these LED indicators follow see LED Indicators Rear Panel The rear panel of the Switch consists of a power switch an AC power connector system fans and MII port The following shows the rear panel of the Switch AC POWER CONNECTOR WIEN seine INN EN 4 0 1 0 SE U N o L SYSTEM FAN MII CONNECTOR SYSTEM FAN POWER SWITCH INLET OUTLET Figure 3 2 Rear panel view of the DES 3208 Power Switch Thi
2. Send BOOTP Request Upon Power Up determines whether the Switch should send out a BOOTP broadcast request when it is powered up The BOOTP protocol allows IP addresses network masks and default gateways to be assigned on a central BOOTP server if this option is set the Switch will first look for a BOOTP server to provide it with this information before using the supplied settings Using the Console Interface 43 10 100 Fast Ethernet Switch User s Guide DES 3208 Fast Ethernet Switch TCP IP Parameters Configuration Menu Current Setting IP Address Subnet Mask 5 0 0 0 Default Gateway 202 39 74 251 System Restart Setting IP Address 10 2 0 5 Subnet Mask 255 0 0 0 Default Gateway 202 39 74 251 Send BootP Request Upon Power Up EXIT Figure 6 10 TCP IP Parameters Configuration Menu Out of band management and console settings You can use the Out of Band Console Setting menu to choose whether to use the Switch s RS 232C serial port for console management or for out of band TCP IP communications using SLIP and to set the bit rate used for SLIP communications The following fields can be set System Restart Setting Serial Port Type determines whether the serial port should be used for out of band SLIP management or for console management starting from the next time the Switch is restarted In this field you can toggle between Out of band or Console port type settings Out of Band Baud Rate d
3. You can use the backspace and delete keys to erase characters behind and in front of the cursor 4 The up and down arrow keys the left and right arrow keys the tab key and the backspace key can be used to move between selected items It is recommended that you use the tab key and backspace key for moving around console 5 Items in UPPERCASE are commands Moving the selection to a command and pressing Enter will execute that command e g SAVE EXIT etc Using the Console Interface 33 10 100 Fast Ethernet Switch User s Guide First Time Connecting To The Switch The Switch supports user based security that can allow you to prevent unauthorized users from accessing the Switch or changing its settings This section tells how to log onto the Switch Note The passwords used to access the Switch are case sensitive therefore S is not the same as 5 When you first connect to the Switch you will be presented with the first login screen shown below Press Ctrl R hold down the Ctrl key press the R key and release both keys to call up the screen if the first login screen does not appear Also Ctrl R can be used at any time to refresh the screen DES 3208 Fast Ether Switch Console Management Copyright C 1997 D Link Corporation User Name 1 Password OK CLOSE CONNECTION Figure 6 1 Initial Screen first time connecting to the Switch Move the cursor to OK and press Enter Note Leave the
4. 4 Move the cursor to SAVE and press Enter 5 Move the cursor to EXIT and press Enter The Switch should restart and all of its parameters will be reset to their default values 62 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide TECHNICAL SPECIFICATIONS Standards IEEE 802 3 1OBASE T Ethernet 802 3u 100 BASE TX Fast Ethernet ANSVIEEE Std 802 3 NWay auto negotiation IEEE 802 3 Frame types Transparent IEEE 802 3 MAC layer frame size 64 1518 bytes Data Transfer Rate Fast Ethernet 100Mbps half duplex 200Mbps full duplex Topology Technical Specifications 63 10 100 Fast Ethernet Switch User s Guide Network Cables 10BaseT 2 pair UTP Cat 3 4 5 100 EIA TIA 568 100 ohm STP 100 m 100Base TX 2 pair UTP Cat 5 100 m EIA TIA 568 100 ohm STP 100 m Number of Ports 8 x 10 100 Mbps NWay ports Media Interface MDI II RJ 45 shared with port 1x Exchange Controller Chips VLSI Physical and Environmental AC inputs 100 240 VAC 50 60 Hz internal universal power supply DC fans 2 built in 40x40 mm fan 64 Technical Specifications 10 100 Fast Ethernet Switch User s Guide Physical and Environmental FCC Class A CE Mark Class A VCCI Class A UL UL 1950 CSA CSA950 TUV GS EN60950 Performance MAC Address Learning Automatic update Max age fixed Technical Specifications 65 10 100 Fast Ethernet Switch User s Guide R
5. 63 Port Path Cost 1 65535 field 63 Port Priority 0 255 field 64 Static filtering 26 Static Filtering definition of 59 Statistic Counters menu 54 Status 51 61 Learned 58 Management 58 Self 58 Status Custom Filtering Table Delete On Reset 62 Invalid 61 Permanent 62 Storage Temperature 68 Store and forward switching 4 straight cable 71 Subnet Mask 45 Super and General User Privileges 38 Super User 21 38 Switch Management 21 33 Switch Monitoring 54 Switch to 10 Base T hub connecting the 18 Switch to 100Base TX hub connecting the 18 Switch to Hub without uplink port Using crossover cable 19 Using straight cable 19 Switch to Switch other devices connecting the 19 Switch to switch connecting the Using crossover cable 20 Using straight cable 20 Switching Technology 2 System Configuration Menu 49 System Contact 49 System Fan 13 System Load LED indicator 15 System Location 49 System Name 49 Index System Restart Setting Out of Band Baud Rate 47 Serial Port Type 47 TCP IP Parameters Configuration 45 TCP IP Settings 45 TCP IP TELNET protocol 34 TELNET program 35 Terminal emulation VT100 22 Terminal emulator program Under Windows operating system 34 Terms used in document v TFTP the Trivial File Transfer Protocol 47 Third party vendors SNMP software 25 Total Bytes Rx Total Bytes Received 56 Total Frames Rx Total Frames Received 56 Tra
6. Details are as follows On the Bridge Level Root Bridge The Switch with the lowest Bridge Identifier is the Root Bridge Naturally you will want the Root Bridge to be the best Switch among the Switches in the loop to ensure the highest network performance and reliability Bridge Identifier This is the combination of the Bridge Priority a parameter that you can set and the MAC address of the Switch Example 4 00 80 C8 00 01 00 where 4 is the Bridge Priority A lower Bridge Identifier results in a higher priority for the Switch and thus increases it probabily of being selected as the Root Bridge Designated Bridge From each LAN segment the attached Bridge that has the lowest Root Path Cost to the Root Bridge is the Designated Bridge It forwards data packets for that LAN segment In cases where all Switches have the same Root Path Cost the Switch with the lowest Bridge Identifier becomes the Designated Bridge 26 Switch Management 10 100 Fast Ethernet Switch User s Guide Root Path Cost The Root Path Cost of a Switch is the sum of the Path Cost of the Root Port and the Root Path Costs of all the Switches that the packet goes through The Root Path Cost of the Root Bridge is zero Bridge Priority This is a parameter that users can set The smaller the number you set the higher the Bridge Priority is the higher the Bridge Priority the better the chance the Switch will be selected as the Root Bridge On t
7. INDEX c 71 About This Guide iii 10 100 Fast Ethernet Switch User s Guide ABOUT THIS GUIDE This User s guide tells you how to install your DES 3208 how to connect it to your Fast Ethernet network and how to set its configuration using the built in console interface Terms For simplicity this documentation uses the terms Switch first letter upper case to refer to DES 3208 10 100 Fast Ethernet Switch and switch first letter lower case to refer to all Ethernet switches including the DES 3208 Overview of this User s Guide Chapter 1 Introduction Describes the switch and its features Chapter 2 Unpacking and Setup Helps you get started with the basic installation of the switch Chapter 3 Identifying External Components Describes the frontpanel rear panel and LED indicators of the switch Chapter 4 Connecting the Switch Tells how you can connect the DES 3208 to your Fast Ethernet network About This Guide v 10 100 Fast Ethernet Switch User s Guide vi Chapter 5 Switch Management Talks about Local Console Management via the RS 232 DCE console port and other aspects about how to manage the Switch Chapter 6 Using the Console Interface Tells how to use the built in console interface to change set and monitor Switch performance and security Appendix A Technical Specifications Lists the technical specifications of the DES
8. the green LED lights to indicate the ready state of the switch MII The MII Media Independent Interface is used for connection between two independent locations up to a distance of two kilometers Identifying External Components 13 10 100 Fast Ethernet Switch User s Guide After the system s initial check and power is on this LED indicator is ON green when a secured connection is established at the port otherwise it is OFF Console This LED indicator is lit when the switch is being managed out of band local console management through the RS 232 console port using a straight through serial cable When a secured connection is established this LED indicator is lit green Otherwise it is OFF 100 These LED indicators are illuminated green when 100 Mbps device is connected to any of the 8 ports or uplink port 10 Mbps device is connected to any of the 8 ports or uplink port these LED indicators are OFF Link Act These LED indicators are lighted up green when there is a secure connection or link to a device at any of the ports The LED indicators blink green whenever there is reception or transmission i e Activity Act of data occurring at a port FDX Col This LED indicator is green when a respective port is in full duplex FDX mode Otherwise it is OFF for half duplex HDX operations It blinks yellow when collisions are occurring on the respective port System Load Indicat
9. 3208 Appendix RJ 45 Pin Specifications Shows the details and pin assignments for the RJ 45 receptacle connector Appendix C MII Port Specifications About This Guide 10 100 Fast Ethernet Switch User s Guide INTRODUCTION This section describes the features of the DES 3208 as well as giving some background information about Ethernet Fast Ethernet switching technology Fast Ethernet Technology The growing importance of LAN s and the increasing complexity of desktop computing applications are fueling the need for high performance networks A number of high speed LAN technologies are proposed to provide greater bandwidth and improve client server response times Among them Fast Ethernet or 100Base T provides a non disruptive smooth evolution from the current 10Base T technology The non disruptive and smooth evolution nature and the dominating potential market base virtually guarantee cost effective and high performance Fast Ethernet solutions in the years to come 100Mbps Fast Ethernet is a new standard specified by the IEEE 802 3 LAN committee It is an extension of the 10Mbps Ethernet standard with the ability to transmit and receive data at 100Mbps while maintaining the CSMA CD Ethernet protocol Since the 100Mbps Fast Ethernet is compatible with all other 10Mbps Ethernet environments it provides a straightforward upgrade and takes advantage of the company s existing investment in hardware software and
10. Menu Create New User User Name Password Confirm Password Access Level lt Super User gt EXIT Figure 6 8 Adding a New User 4 Choose SAVE and press Enter to let the user addition take effect 5 Choose EXIT to leave the Create New User menu Deleting a User To delete a user 1 Choose User Account Change from the main menu 2 Choose Delete Users from the User Account Change menu 3 Toggle the Delete field of the user you wish to remove to Yes Using the Console Interface 41 10 100 Fast Ethernet Switch User s Guide User Account Change Menu Change Access Delete Users User Name Access Level Status Delete gt gt lt N A gt lt N A gt N gt N lt N A gt N gt N SAVE EXIT Figure 6 9 Deleting a User 4 Choose SAVE and press Enter to let the user addition take effect 5 Choose EXIT to leave the Delete Users menu Setting up the Switch This section describes the settings you will need to change to allow you to be able to manage the Switch from an SNMP based Network Management System such as D View SNMP View or to be able to access the Switch using the TELNET protocol TCP IP Settings The Switch needs to have a TCP IP address assigned to it so that the network management system or TELNET client can find it on the network The TCP IP Parameters Configuration menu allows you to change the settings for the two different interfac
11. Path Port 1 Designated Port Root Path Cost 100 Bridge ID 30 Bridge 2 Port 2 Root Port LAN 3 Figure 5 2 After Applying the STA Rules 30 Switch Management STA parameters Switch Management Settings lower the higher the priority 1 10 sec Enable Disable lower the higher the priority 10 100 Fast Ethernet Switch User s Guide Increases chance of becoming the Root Bridge No effect if not Root Bridge Compete for Root Bridge if BPDU is not received High delays the change in state Enable or disable this LAN segment Increases chance of become Root Port Comment Avoid if the switch is used in workgroup level of a large network Never set greater than Max Age Time Avoid low number for unnecessary reset of Root Bridge Max Age lt 2 x Forward Delay 1 Max Age 22x Hello Time 1 Disable a port for security or problem isolation Table 5 1 User selective STA parameters 31 10 100 Fast Ethernet Switch User s Guide USING THE CONSOLE INTERFACE Your 10 100 Fast Ethernet Switch supports a console management interface that allows you to set up and control your Switch either with an ordinary terminal or terminal emulator or over the network using the TCP IP TELNET protocol You can use this facility to perform many basic network management functions In addition the console program will allow you to set
12. Privileges Using the Console Interface 37 10 100 Fast Ethernet Switch User s Guide establishing a Super User you are now ready to operate the Switch Now issue a LOGOFF command from the main menu the login screen appears as follows LOGIN ON THE SWITCH CONSOLE BY REGISTERED USERS DES 3208 Fast Ether Switch Console Management Copyright C 1997 D Link Corporation User Name Hess Password E OK CLOSE CONNECTION Figure 6 5 Login Screen To log in 1 Type in your user name and press Enter 2 Type in your password and press Enter 1 If the Switch is not used within five 5 minutes the following message appears at the bottom of the console s main menu Console time out press ENTER to continue At this time press ENTER and login screen will be displayed 38 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide 3 With the cursor on the OK selection press Enter The main menu screen will be displayed based on your Super User or General User access level or privilege The following describes the differences between the user privileges Changing Your Password To change your user password 1 Choose User Account Change from the main menu 2 Choose Change Password User Account Change Menu Change Password User Name Old Password New password Confirm Password EXIT Figure 6 6 Change Password 3 Type in your user name and press E
13. have a standard five year warranty To qualify for lifetime warranty the enclosed Product Registration Card must be completed and returned to D Link within ninety 90 days of purchase Warranty service may be obtained by contacting a D Link office within the applicable warranty period for a Return Material Authorization RMA number If a Registration Card has not been previously sent proof of purchase such as a copy of the dated purchase invoice must be provided Once an RMA number is issued the defective product must be shipped back to D Link prepaid insured and wrapped in the original or similar shipping package to ensure that it will not be damaged during shipment When returning the defective product to D Link for service the RMA number must be marked on the outside of the shipping package Any product returned without an RMA number shall be rejected and sent back to the Customer and D Link reserves the right to have Customer bear the cost of sending back such products A service charge may or may not be levied to Customer by D Link To find out if a service charge is levied or not and the charged amount read the RMA that is returned to Customer or ask the D Link office when an RMA is requested Software D Link warrants that the software programs licensed from it will perform in substantial conformance to the applicable published program specifications for a period of ninety 90 days from the date of purchase from D Link or its Aut
14. personnel training Introduction 1 10 100 Fast Ethernet Switch User s Guide Switching Technology Another approach to pushing beyond the limits of Ethernet technology is the development of Switching technology A switch bridges Ethernet packets at the MAC address level of the Ethernet protocol transmitting among connected Ethernet or fast Ethernet LAN segments Switching is a cost effective way of increasing the total network capacity available to users on a local area network A switch increases capacity and decreases network loading by making it possible for a local area network to be divided into different segments which don t compete with each other for network transmission capacity giving a decreased load on each The switch acts as a high speed selective bridge between the individual segments Traffic that needs to go from one segment to another is automatically forwarded by the switch without interfering with any other segments This allows the total network capacity to be multiplied while still maintaining the same network cabling and adapter cards For Fast Ethernet networks a switch is an effective way of eliminating problems of chaining hubs beyond the two repeater limit A switch can be used to split parts of the network into different collision domains making it possible to expand your Fast Ethernet network beyond the 205 meter network diameter limit for 100BASE TX networks Switches supporting both tradit
15. this destination address for port no 5 this destination address will be discarded However if you do not want a destination address to be discarded because of lack of recognition a zero 0 may be used to specify all ports Status This field allows you to toggle between three choices It represents the filtering portion of the Switch and determines the Using the Console Interface 57 10 100 Fast Ethernet Switch User s Guide treatment of each destination address upon reception The following are definitions for status types Invalid This entry in all cases will discard the destination address from the filtering table Permanent This entry in all cases is currently in use and will remain so after the next reset of the Switch This is the default entry for destination address entry o Delete On Reset This entry is currently in use and will remain so until the next reset of the Switch Protocol Parameters The Protocol Parameters allows you to change the behind the scene parameters of the Spanning Tree Algorithm at the bridge level The parameters for this section have been fully explained in Chapter 5 Switch Management see STA Operation Levels On the Bridge level and User Changeable Parameters It is recommended that you read these sections and or Chapter 5 first before changing any of the parameters To change the Protocol Parameters 1 Choose Spanning Tree Algorithm from the main menu 2 Choose Prot
16. up the Switch for management using D View SNMP View or another SNMP based network management system This chapter describes how to use the console interface to access the Switch change its settings and monitor its operation Connecting to the Switch You can use the console interface by connecting the Switch to a VT100 compatible terminal or a computer running an ordinary terminal emulator program e g the terminal program included with the Windows operating system using an RS 232C serial cable Your terminal parameters will need to be set to VT 100 ANSI compatible Arrow keys enabled 32 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide 9 600 baud 8 data bits No parity One stop bit You can also access the same functions over a TELNET interface Once you have set an IP address for your Switch you can use a TELNET program in a VT 100 compatible terminal mode to access and control the Switch All of the screens are for the most part identical whether accessed from the console port or from a TELNET interface Console Usage Conventions The console interface makes use of the following conventions 1 Items after a colon are read only values displayed for information purposes The cursor cannot be moved to these items 2 Items in lt angle brackets gt can be toggled on or off using the space bar 3 Items in square brackets can be changed by typing in a new value
17. 0000 15 PC TO SWITCH 5 ettet a ii ete ud 15 HUB TO 16 LOB GSCAT 17 J00Base IX 17 HUB WITHOUT UPLINK MDI IT 17 About This Guide i Using straight cable eiae ear 18 Using crossover cable oic 18 SWITCH TO SWITCH OTHER 18 Using straight cable 2 eee ees 19 Using crossover cable usce eere erbe 19 SWITCH MANAGEMENT z suessesesnennenesnennenesnennenesnennenesnennenennennenennene 20 LOCAL CONSOLE MANAGAMENT e nen en eene 20 Console port RS 232 DGE s gat Pedes 21 IP Addresses and SNMP Community 21 Jh EE 22 na 23 Packet Forwarding ten e ete e eis 24 Aging Time er e vane MINER cornice 25 Spanning Tree Agathe 25 STA Operation Levels eoe eerte 26 On the Bridge Level eue eee ees 26 On the Port Level teh teet etes tente t eere dote cote 27 User Changeable Parameters eee 27 of STA ue oe eee tee ea ed iei e te 29 USING THE CONSOLE INTERFACE eere esee ee eene een tnnn 32 CONNECTING TO THE SWITCH eee eene eene nen 32 CONSOLE USAGE CONVENTIONS eese ee e een ee en enne 33 FIRST TIME CONNECTING TO THE SWITC
18. 64 characters System Name corresponds to the SNMP MIB II variable system sysName and is used to give a name to the Switch for administrative purposes The Switch s fully qualified domain name is often used provided a name has been assigned 46 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide System Location corresponds to the SNMP MIB II variable system sysLocation and is used to indicate the physical location of the Switch for administrative purposes System Contact corresponds to the SNMP MIB II variable sysContact and is used to give the name and contact information for the person responsible for administering the Switch DES 3208 Fast Ethernet Switch System Configuration Menu Boot PROM Firmware Version Software Version Hardware Version 1 00 MAC Address 00 80 C8 02 00 04 System Description D Link Fast Ethernet System Name DES System Location System Contact D Link Technical Support Console Telnet Display Timeout in Minutes 1 32767 5 EXIT Figure 6 13 System Configuration Menu The System Configuration Menu also contains the Console Telnet Display Timeout parameter which determines how long the console may sit idle before the user is automatically logged out SNMP Management Settings SNMP Trap Manager Configuration The Switch sends out SNMP traps to network management stations whenever certain exceptional events occur such as when the Switch is tu
19. AY NOT APPLY TO YOU Limited Warranty Hardware D Link warrants its hardware products to be free from defects in workmanship and materials under normal use and service for the following lengths of time from the date of purchase from D Link or its Authorized Reseller Product Type Warranty Period Network adapters Lifetime Unmanaged and managed hubs 10Mbps Lifetime Unmanaged and managed hubs 100Mbps One year Managed Switches Three years Unmanaged switches Lifetime Repeaters MAUs transceivers media converters One year Concentrators One year Internetworking products One year Power supply and fans in these devices One year Other hardware products One year Spare parts and spare kits 90 days If a product does not operate as warranted during the applicable warranty period D Link shall at its option and expense 1 repair the defective product or part 2 deliver to Customer an equivalent product or part to replace the defective item All products that are replaced will become the property of D Link Replacement products may be new or reconditioned Any replaced or repaired product or part has a ninety 90 day warranty or the remainder of the initial warranty period whichever is longer D Link shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products returned to D Link pursuant to any warranty All products with lifetime warranty
20. D Link DES 3208 10 100 Fast Ethernet Switch User s Guide Rev 02 January 1998 inted In Tai RECYCLABLE Wichtige Sicherheitshinweise 10 11 12 13 14 15 16 17 Bitte lesen Sie sich diese Hinweise sorgf ltig durch Heben Sie diese Anleitung f r den sp tern Gebrauch auf Vor jedem Reinigen ist das Ger t vom Stromnetz zu trennen Vervenden Sie keine Fl ssig oder Aerosolreiniger Am besten dient ein angefeuchtetes Tuch zur Reinigung Um eine Besch digung des Ger tes zu vermeiden sollten Sie nur Zubeh rteile verwenden die vom Hersteller zugelassen sind Das Ger t is vor Feuchtigkeit zu sch tzen Bei der Aufstellung des Ger tes ist auf sichern Stand zu achten Ein Kippen oder Fallen k nnte Verletzungen hervorrufen Verwenden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des Herstellers Die Bel ftungs ffnungen dienen zur Luftzirkulation die das Ger t vor berhitzung sch tzt Sorgen Sie daf r da diese ffnungen nicht abgedeckt werden Beachten Sie beim Anschlu an das Stromnetz die Anschlu werte Die Netzanschlu steckdose mu aus Gr nden der elektrischen Sicherheit einen Schutzleiterkontakt haben Verlegen Sie die Netzanschlu leitung so da niemand dar ber fallen kann Es sollete auch nichts auf der Leitung abgestellt werden Alle Hinweise und Warnungen die sich am Ger ten befinden sind zu beachten Wird das Ger t ber einen l ngeren Zeit
21. E Out of band management requires connecting PC with a SNMP management platform to the RS 232 DCE console port of the Switch Switch management using terminal emulation VT100 when connected to the RS 232 DCE console port is called Local Console Managment to differentiate it from management done via management platforms The console port is set for the following configuration o Baud rate 9 600 Parity none Data width 8 bits Stop bits 1 IP Addresses and SNMP Community Names Each Switch has its own IP Address which is used for communication with an SNMP network manager or other TCP IP application for example BOOTP TFTP You can change the default Switch IP Address to meet the specification of your networking address scheme In addition you can also set in the Switch an IP Address for a gateway or a router It is useful when the network management station is not located on the same network as the Switch making it necessary for the Switch to go through a gateway or router to reach the network manager For security you can set in the Switch a list of IP Addresses of the network managers that you allow to manage the Switch You can also change the default Community Name in the Switch and set access rights of these Community Names Switch Management 21 10 100 Fast Ethernet Switch User s Guide Traps Trap managers are special users of the network who are given certain rights and access in overseeing the mainte
22. E EXIT Figure 6 19 Custom Filtering Table 56 Using the Console Interface 3 10 100 Fast Ethernet Switch User s Guide In the Source Address field enter the Ethernet MAC address of the station in the form xx xx xx xx xx xx each xx must be a hexadecimal number between 00 and FF In the Source Port field type in the port number to which station is to be connected For example the value 1 in this field would represent that the station will be connected to port 1 of this switch the value 0 would represent that the station can not be connected to any port of the switch and the switch will filter out all packets from the station Set the Status of the entry to Permanent in order to enter and save the settings in the memory of the switch Choose SAVE to add the entry to the forwarding table The PREPAGE command allows you to see the previous page and the NEXTPAGE command allows you to see the next page The following Custom Filtering Table parameters can be set Source Address This field allows you to input the Source Address This must be a valid MAC address you will be immediately notified with the message Invalid MAC Address if you enter an incorrect MAC address Source Port This field allows you to enter the receive port for a specified Destination Address For example if 00 80 C8 12 33 43 constitutes a destination address for receive port no 3 and the Switch receives
23. F Link Act is ON FDX Col depends on the connected switch or other device Connecting The Switch 19 10 100 Fast Ethernet Switch User s Guide SWITCH MANAGEMENT Local Console Managament Local console management involves the administration of the DES 3208 Switch via a direct connection to the RS 232 DCE console port From the Main Menu screen of the console program a Super User or General User defined in the next chapter has priviledge and access to manage control and monitor the many functions of the Switch The components of the Switch allow them to be part of a manageable network These components include a CPU memory for data storage other related hardware and the SNMP agent firmware Activities on the Switch can be monitored with these components while the Switch can be manipulated to carry out specific tasks Out of Band Management for the Switch is accomplished through a locally connected management terminal to the RS 232 console port Through this port a user can set up monitor or change the configuration of the Switch The Spanning Tree Algorithm STA provides the capability for the Switch to operate properly with other Bridges in a SNMP network supporting the STA Using the STA the network will prevent network loop and automatically establish and activate a backup path in the event of a path failure 20 Switch Management 10 100 Fast Ethernet Switch User s Guide Console port RS 232 DC
24. Guide System Reset To perform a System Reset 1 Choose System Reset from the main menu DES 3208 Fast Ethernet Switch System Reset Are you sure you want to reset Yes Figure 6 23 System Reset 2 Move the cursor to Yes to confirm the reset and press Enter The Switch should restart Factory Reset Before performing a factory reset be absolutely certain that this is what you want to do Once the reset is done all of the Switch s settings stored in NV RAM including TCP IP parameters SNMP parameters the enabled disabled settings of ports security settings etc will be erased and restored to their factory default settings 1 Choose Factory Reset NV RAM to Default Value from the main menu Using the Console Interface 61 10 100 Fast Ethernet Switch User s Guide DES 3208 Fast Ethernet Switch Factory Reset to Default Value CAUTION This function resets the NV RAM to default values The TCP IP parameters must be set before system restart Are you sure you want to proceed with factory reset Yes Figure 6 24 Factory Reset 2 Move the cursor to Yes to confirm the reset and press Enter 3 The main menu screen should appear Move the cursor to the TCP IP Parameters Configuration Menu and input the JP Address Subnet Mask and Default Gateway The Send BootP Request Upon Power Up is an optional field for your response Using the spacebar toggle your response in this field at this time
25. H sese 34 Steps to create a Super User or General User 35 Super and General User Privileges essere 35 LOGIN ON THE SWITCH CONSOLE BY REGISTERED USERS 38 Changing Your Password eese eee 39 Adding and Deleting Useren 40 SETTING UP THE SWITCH sechs et ren een 42 TCP IP Settings roo ty que ER RO Qu eit 42 Out of band management and console settings esse 44 Software Updates eer REP 45 System Configuration Menn 46 SNMP MANAGEMENT SETTINGS 47 SNMP Trap Manager Configuration eese 47 SNMP Manager Configuration eese esee nennen 49 SNMP Security Community eene 49 ii About This Guide Port Configuration iiec eB arr PRO RE E ein 50 SWITCH MONTTORINO EES 51 Displaying Port Statistics ee ee eere eee eens 51 SPANNING TREE ALGORITHM PARAMETERS eene enne 53 Forwarding Table Genie reri en 54 Custom Filtering 55 Protocol Doramtetere eene s erine 58 SLAP Port Parameters hessen 59 RESETTING THE RWITCH 60 System Reset ni e a due qe tee 61 Factory Reset e hot et de UNI irt fie 61 TECHNICAL SPECIFICATIONS eee ee ee eee eee enean esee 0000000 63 RJ 45 PIN SPECIFICATION eese eee eere eee tone eet 66 MIT CONNECTOR SPECIFICATIONS eee 68
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27. J 45 PIN SPECIFICATION When connecting the DES 3208 Switch to another switch a bridge or a hub a modified crossover cable is necessary Please review these products for matching cable pin assignment The following diagram and table show the standard RJ 45 receptacle connector and their pin assignments for the switch to network adapter card connection and the straight crossover cable for the Switch to switch hub bridge connection Figure B 1 The standard RJ 45 receptacle connector 66 RJ 45 Pin Specification 10 100 Fast Ethernet Switch User s Guide Contact Media Direct Interface Signal Tx transmit Tx transmit Rx receive Table B 1 The standard Category 3 cable RJ 45 pin assignment The following shows straight cable and crossover cable connection Figure B 2 Straight cable for Switch uplink MDI II port to switch Hub or other devices connection Figure B 3 Crossover cable for Switch MDI X port to switch hub or other network devices MDI X port connection RJ 45 Pin Specification 67 10 100 Fast Ethernet Switch User s Guide C CONNECTOR SPECIFICATIONS The MII Media Independent Interface is a 40 pin connector used for making connection with other LAN networks This connector has a shared connection with port 2x and when connected the MII connection takes operational precedence over port 2x The following Figure and table show the standard MII 40 pin connector an
28. PORT previous port 54 64 Prevent Unauthorized Users 36 Protocol Parameters Bridge Forward Delay field 62 Bridge Hello Time field 62 Bridge Max Age field 62 Bridge Priority field 62 Rack Installation 8 RAM Buffer 69 Read only MIBs Definition of 25 Read write MIBs Definition of 25 Rear Panel 12 Receive Port 61 Resetting the Switch 64 RJ 45 Pin Specification 70 Routers 3 RS 232 DCE console port 21 Rx Good Frames Received 56 Segments Network 2 10 100 Fast Ethernet Switch User s Guide Send BOOTP Request Upon Power Up TCP IP Parameter 46 Setting up the Switch 45 Setup 7 SLIP interface out of band communication 45 SLIP management 47 SNMP Community String 51 SNMP Management Settings 50 54 SNMP Manager Configuration 51 SNMP Manager Configuration parameter Status 52 SNMP MIB II variable sysContact 49 system sysLocation 49 system sysName 49 SNMP Security Community Names 51 SNMP Trap Manager Configuration 50 Software Update menu 48 Software Update Mode Network 48 Out of Band 48 Software Update changeble parameter 48 Software Updates 47 Spanning Tree Algorithm STA 27 Spanning Tree Algorithm STA Function of the 21 Spanning Tree Algorithm Parameters 57 Custom Filtering Table 59 Forwarding Table 57 Protocol Parameters 62 STAP Port Parameters 63 STA Operation Levels 27 On the Bridge Level 27 Standard MIB II 24 STAP Port Parameters 74 Port Number 1 8 field
29. User Name and Password fields blank You will see the Main Menu shown below 34 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide 1 5 3208 Fast Ethernet Switch Main Menu System Configuration TCP IP Parameters Configuration Statistics Counters Port Configuration Spanning Tree Algorithm Parameters Out of Band Console Configuration User Account Change SNMP Trap Manager Configuration SNMP Manager Configuration System Reset Software Update Factory Reset NV RAM to Default Value LOGOFF Figure 6 2 Main Menu for Super User The first user automatically gets super user privileges See Table 6 1 and is recommended to create at least one Super User for the Switch Steps to create a Super User or General User From the screen above move the cursor to the User Account Change and press Enter then the User Account Change Menu appears 1 Choose Create New User from the User Account Change Menu and the Create New User Menu appears 2 Enter the new user name and assign an initial password Determine whether the new user should have Super User or General User privileges 3 Choose SAVE and press Enter to let the user addition take effect 4 Choose EXIT to leave the Create New User menu Super and General User Privileges There are two levels of user privileges Super User and General User Some menu Selections available to users with Super User privileges may not be Using the Consol
30. ants are the number of ports and types of ports Examples of read only variables are the statistics counters such as the number of errors that have occurred or how many kilobytes of data have been received and forwarded through a port Switch Management 23 10 100 Fast Ethernet Switch User s Guide Read write MIBs are variables usually related to user customized configurations Examples of these are the Switch s IP Address Spanning Tree Algorithm parameters and port status If you use a third party vendors SNMP software to manage the Switch a diskette listing the Switch s propriety enterprise MIBs can be obtained by request If your software provides functions to browse or modify MIBs you can also get the MIB values and change them if the MIBs attributes permit the write operation This process however can be quite involved since you must know the MIB OIDs and retrieve them one by one Packet Forwarding The Switch looks at the network configuration to forward packets This reduces the traffic congestion on the network because packets instead of being transmitted to all segments are transmitted to the destination only Example if Port receives a packet destined for Port 2 the Switch transmits that packet through Port 2 only and transmits nothing through Port 1 Filtering Database A Switch filters frames i e does not relay frames received by a Switch Port to other Ports on that Switch in order to prevent t
31. ation and protocol conversion Full and Half duplex for both 10Mbps and 100Mbps to allow two communicating stations to transmit and receive at the same time Auto polarity detection for correction of incorrect polarity on the receive twisted pair at each port Introduction 3 10 100 Fast Ethernet Switch User s Guide Data forwarding rate 14 880 pps per port at 100 of wire speed for 10Mbps speed Data forwarding rate 148 800 pps per port at 100 of wire speed for 100Mbps speed Data filtering rate eliminates all error packets runts etc at 14 880 pps per port at 100 of wire speed for 10Mbps speed Data filtering rate eliminates all error packets runts etc at 148 800 pps per port at 100 of wire speed for 100Mbps speed 8K active MAC address entry table per device with self learning and table aging 8 MB packet buffer per device Supports broadcast storm rate filtering Management RS 232 console port for out of band network management a PC Spanning Tree Algorithm Protocol for creation of alternative backup paths and prevention of indefinite network loops D View Network Management Program for standard SNMP based management Fully configurable either in band or out of band control via SNMP based software Flash memory for software up grade This can be done in band via BOOTP TFTP D View or out of band console can also initiate a download request Built in SNMP manag
32. cator lights up upon hookup 3 The FDX Col LED indicator depends upon LAN card capabilities Hub to Switch 10Base T hub can be connected to the Switch via a two pair Category 3 4 or 5 UTP STP straight cable A 100Base TX hub can be connected to the Switch via a two pair Category 5 UTP STP straight cable The connection is accomplished from the hub s uplink MDI II port to any of the Switch s MDI X ports 1x 8x of the DES 3208 DES 3208 SWITCH Figure 4 2 DES 3208 Switch connected to a 10BASE T or 100Base TX Hub 16 Connecting The Switch 10 100 Fast Ethernet Switch User s Guide 10Base T Hub For a 10 Base T hub the Switch s LED indicators should illuminate the following 100M LED speed indicator is OFF Link Act indicator is ON FDX Col indicator is OFF 100Base TX Hub For a 100Base TX hub the Switch s LED indicators should illuminate the following 100M LED speed indicator is ON Link Act is ON FDX Col LED indicator is OFF Hub without Uplink MDI II port If a hub is not equipped with an uplink MDI II port then connection can be made using either straight cable or crossover cable see Appendix A Technical Specifications for cable requirements Connecting The Switch 17 10 100 Fast Ethernet Switch User s Guide DES 3208 SWITCH STRAIGHT CABLE Figure 4 3 DES 3208 Switch connect
33. d the pin assignment 1 BEEP BBB REPRE RR eee N 2 J 40 beer 01 Figure C 1 The Standard MII connector 68 MII Connector Specifications 10 100 Fast Ethernet Switch User s Guide MII Connector Pin Assignment Contact Signal Name Contact MII Signal Signal Name Output E qe eem E em eI Yom E em Te fs Fe E ee Jem E em Jem fa ome 8 RX DV Receive Data 28 Ground Valid Receive Error fa we a zo Tem icd NN TXD lt 0 gt Transmit Data 0 Ground bit TXD lt 1 gt Transmit Data bit TXD lt 2 gt Transmit Data 2 bit TXD lt 3 gt Transmit Data 3 Ground bit MII Connector Specifications 69 10 100 Fast Ethernet Switch User s Guide MII Connector Pin Assignment Contact MI Signal Name Contact MII Signal Signal Name Signal w e es Less fo Table C 1 The MII standard pin assignment 70 MII Connector Specifications 100 M speed indicator 15 100BASE TX networks 2 100Mbps Fast Ethernet 1 1024 1518 Octs 56 128 255 Octs 56 256 511 Octs 56 512 1023 Octs 56 64 Octs 56 65 127 Octs 56 AC inputs 68 AC Power Connector 13 AC power cord 6 Access Rights read only 52 read write 52 Accessory pack 6 Adding a New User 42 Adding and Deleting Users 42 Age Time 57 Ageing out of filtering information 26 Aging Time very long 26 very short 26 Aging Time definition
34. e Interface 35 10 100 Fast Ethernet Switch User s Guide available to General Users The main menus shown are the menus for users with Super User and General User privileges DES 3208 Fast Ethernet Switch Main Menu Configuration T IP Parameters Configuration Statistics Counters Port Configuration Spanning Tree Algorithm Parameters Out of Band Console Configuration User Account Change SNMP Trap Manager Configuration SNMP Manager Configuration System Reset Software Update Factory Reset NV RAM to Default Value LOGOFF Figure 6 3 Main Menu for Super User DES 3208 Fast Ethernet Switch Main Menu ystem Configuration TCP IP Parameters Configuration Statistics Counters Port Configuration Spanning Tree Algorithm Parameters Out of Band Console Configuration User Account Change SNMP Trap Manager Configuration SNMP Manager Configuration LOGOFF Figure 6 4 Main Menu for General User The following table summarizes Super User and General User privileges Super User General User 36 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide Super User General User Privilege System Config Yes view only TCP IP Parameter Configuration Yes view only Statistic Counters Yes Port Configuration Yes view only Spanning Tree Algorithm Parameters Protocol Parameters Y Yes view only es N User Account Change Table 6 1 Super User and General User
35. e company Would you recommend your D Link product to a friend ODon t know yet 10 Your comments on this product
36. e following questions help us to support your product 1 2 9 Where and how will the product primarily be used Business DHome Business Use How many employees work at installation site 11 employee 02 9 0110 49 0150 99 1100 499 1500 999 111000 or more What network protocol s does your organization use OXNS IPX OTCP IP ODECnet OOthers What network operating system s does your organization use LID Link LANsmart ONovell NetWare LINetWare Lite OSCO Unix Xenix NFS 3 Open OBanyan Vines ODECnet Pathwork OWindows NT OWindows NTAS OWindows 95 OOthers What network management program does your organization use LID View OpenView Windows OpenView Unix OSunNet Manager NMS ONetView 6000 OOthers What network medium media does your organization use OFiber optics OThick coax Ethernet coax Ethernet 010BASE T UTP STP 0100 100 4 01100VGAnyLAN Others What applications are used on your network publishing OJSpreadsheet OWord processing ODatabase management DAccounting What category best describes your company LIEngineering OEducation OFinance OLegal DIInsurance Real Estate Manufacturing ORetail Chainstore Wholesale Government OTransportation Utilities Communication OVAR L1System hous
37. e for network security purposes thereby aging out or Using the Console Interface 55 10 100 Fast Ethernet Switch User s Guide discarding unwanted addresses from the Forwarding Table furthermore you can use it for explicit forwarding by speeding up the process of packet forwarding Dynamic Filtering and Static Filtering are among the two important features of the Custom Filtering Table They are defined here briefly as follows Dynamic Filtering is defined when a dynamic entry is created by the Learning Process as a result of observation of network traffic in the Filtering Database Static Filtering is defined as static entries that may be added and removed from the Filtering Database by the user They are not automatically removed by any timeout mechanism The Source Address heading displays a total of ten 10 addresses at a time while a total of 40 MAC addresses may be inputted for all of the ports The Source Port heading displays the respective port you would like associate with an inputted Source Address Occasionally you may want to manually add entries to the switch s forwarding table To add an entry for a station 1 Choose Spanning Tree Algorithm Parameters from the main menu 2 Choose Custom Filtering Table Spanning Tree Algorithm Menu Custom Filtering Table Source Address Source Port Status Entry Edit Source Address Source Port 0 8 Status un 00 00 00 00 0 lt Permanent gt PREPAGE NEXTPAGE SAV
38. ed to a Hub without uplink MDI II port using the Straight OR crossover cable option Using straight cable When using straight cable the connection can be made from the uplink MDI II port of the Switch to any port of the Hub see figure 4 3 Using crossover cable When using crossover cable the connection can be made from any 1x 8x port of the Switch to any port of the Hub see figure 4 3 Switch to Switch other devices The Switch can be connected to another switch or other devices routers bridges etc via a two pair Category 3 4 5 UTP STP straight or crossover cable DES 3208 SWITCH A CROSSOVER CABLE STRAIGHT CABLE DES 3208 SWITCH B 18 Connecting The Switch 10 100 Fast Ethernet Switch User s Guide Figure 4 4 DES 3208 Switch to switch connection using the straight OR crossover cable options Using straight cable When using straight cable this is done from the uplink MDI II port of the Switch Switch A to any of the 10 Mbps 100 Mbps MDI X port of the other switch switch B or other devices see figure 4 4 Using crossover cable When using crossover cable this is done from any MDI X port of the Switch Switch A to any of the 10 Mbps or 100 Mbps MDI X port of the other switch switch B or other devices see figure 4 4 Switch A s LED indicators for the respective connected ports are as follows 100M is ON for 100Mbps otherwise OF
39. ement MIB I RFC 1156 MIB II RFC 1213 Bridge MIB RFC 1268 and D Link proprietary MIB 4 Introduction 10 100 Fast Ethernet Switch User s Guide UNPACKING AND SETUP This chapter provides unpacking and setup information for the Switch Unpacking Open the shipping carton of the Switch and carefully unpack its contents The carton should contain the following items One DES 3208 10 100 Fast Ethernet Switch Accessory pack 2 mounting brackets and screws Four rubber feet with adhesive backing 1 AC power cord This user s guide with Registration Card Diskette containing management software If any item is found missing or damaged please contact your local D Link Reseller for replacement Unpacking and Setup 5 10 100 Fast Ethernet Switch User s Guide Setup The setup of the Switch can be performed using the following steps The surface must support at least 3 Kg The power outlet should be within 1 82 meters 6 feet of the device Visually inspect the power cord and see that it is secured fully to the AC power connector Make sure that there is proper heat dissipation from and adequate ventilation around the Switch Do not place heavy objects on the Switch Desktop or Shelf Installation When installing the Switch on a desktop or shelf the rubber feet included with the device must be first attached Attach these cushioning feet on the bottom at each corner
40. es the current traffic load on the Switch The system load bar provides a quick reference of the current traffic load relative to the capacity It is a measure of the number of packets traversing within the device Only valid packet and transmit packet are counted The first six LED indicators are green the last two LED indicators are yellow 14 Identifying External Components 10 100 Fast Ethernet Switch User s Guide CONNECTING THE SWITCH This chapter describes how to connect the DES 3208 to your Fast Ethernet network PC to Switch A PC can be connected to the Switch via a two pair Category 3 4 5 UTP STP straight cable The PC equipped with a RJ 45 10 100 Mbps jack should be connected to any of the eight ports 1x 8x of the DES 3208 DES 3208 Wie s nr e Gi VA N AJ RJ 45 JACK Figure 4 1 DES 3208 Switch connected to a PC or Workstation Connecting The Switch 15 10 100 Fast Ethernet Switch User s Guide The LED indicators for PC connection are dependent on the LAN card capabilities If LED indicators are not illuminated after making a proper connection check the PC s LAN card the cable Switch conditions and connections The following are LED indicator possibilities for a PC to Switch connection 1 The 100M LED indicator comes ON for a 100 Mbps and stays OFF for 10 Mbps 2 The Link Act LED indi
41. es to be defined The community name public is defined by default you can change this name in addition to adding others You will need to coordinate these names with the community name settings you use in your network management system The following SNMP Manager Configuration parameters can be set Access Rights allows each community to be separately set to either read only or read write Status determines whether this SNMP Community name entry is valid or invalid DES 3208 Fast Ethernet Switch SNMP Manager Configuration SNMP Community Strin Access Right Status o RES E gt lt Read Only gt lt Invalid gt Read Only Invalid Read Only Invalid Figure 6 15 SNMP Manager Configuration Using the Console Interface 49 10 100 Fast Ethernet Switch User s Guide Port Configuration The port configuration menu allows you to change the port state in the case when you would like to partition a port due to excessive collision or for observation device repair security reasons Great caution however must be observed when partitioning a port you should make sure that the partitioned port is not being used as the port to control or monitor the condition of other devices To change the configuration of a port 1 Choose Port Configuration from the main menu 2 Specify the port in the Port 1 8 field 3 In the Port State field change the port state to enable or disable 4 Ch
42. es used on the Switch the Ethernet interface 42 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide used for in band communication and the SLIP interface used over the console port for out of band communication Each of the fields on this menu takes effect the next time the system is restarted Fields that can be set include IP Address determines the IP address used by the Switch for receiving SNMP and TELNET communications Should be of the form xxx xxx xxx xxx Where each xxx is a number represented in decimal between 0 and 255 This address should be a unique address on a network assigned to you by the central Internet authorities The same IP address is shared by both the SLIP and Ethernet network interfaces Subnet Mask bitmask that determines the extent of the subnet that the Switch is on Should be of the form xxx xxx xxx xxx where each xxx is a number represented in decimal between 0 and 255 If no subnetting is being done the value should be 255 0 0 0 for a Class A network 255 255 0 0 for a Class B network and 255 255 255 0 for a Class C network Default Gateway IP address that determines where frames with a destination outside the current subnet should be sent This is usually the address of a router or a host acting as an IP gateway If your network is not part of an internetwork or you do not want the Switch to be accessible outside your local network you can leave this field blank
43. etermines the serial port bit rate that will be used the next time the Switch is restarted Applies only when the serial port is being used for out of band SLIP management it does not apply when the port is used for the console port Available speeds are 2400 9600 19200 and 38 400 bits per second 44 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide DES 3208 Fast Ethernet Switch Out of Band Console Configuration Out of Band Setting Console Setting Baud Rate 9600 Baud Rate 9600 Character Size 8 Character Size 8 Stop Bit 1 Stop Bit 1 Current Setting Serial Port Type Console System Restart Setting Serial Port Type Out of Band Baud Rate Figure 6 11 Out of Band Console Setting Menu Software Updates The Switch is capable of obtaining its boot time configuration information as well as updated versions of its internal firmware using TFTP the Trivial File Transfer Protocol and BOOTP the BOOTstrap Protocol You can use the Software Update menu to control this feature The fields you can set in this menu are Software Update Determines whether or not the Switch will try to look for a configuration file over the network If set to Disable none of the fields below have any effect Software Update Mode Set to either Network or Out of band Determines whether the configuration file should be obtained through the Ethernet network or through the console port Boot Protocol Set to ei
44. found in the back of this User s Guide Your Warranty Registration Card should also be sent to your regional D Link office Trademarks Copyright 1998 D Link Corporation Contents subject to change without prior notice D Link is a registered trademark of D Link Corporation D Link Systems Inc All other trademarks belong to their respective proprietors Copyright Statement No part of this publication may be reproduced in any form or by any means or used to make any derivative such as translation transformation or adaptation without permission from D Link Corporation D Link Systems Inc as stipulated by the United States Copyright Act of 1976 FCC Warning This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this user s guide may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense CE Mark Warning This is a Class A product In a domestic environment this product may cause radio interference in which ca
45. he Port Level Root Port Each Switch has a Root Port This is port that has the lowest Path Cost to the Root Bridge In case there are several such ports then the one with the lowest Port Identifier is the Root Port Designated Port This is the port on each Designated Bridge that is attached to the LAN segment for which the Switch is the Designated Bridge Port Priority The smaller this number the higher the Port Priority is With higher Port Priority the higher the probability that the port will be selected as the Root Port Path Cost This is a changeable parameter and may be modified according to the STA specification The 100Mbps segment has an assigned Path Cost of 10 and each 10Mbps segment has an assigned Path Cost of 100 based on the STA specifications User Changeable Parameters The factory default setting should cover the majority of installations However it is advisable to keep the default settings as set at the factory unless it is absolutely necessary The user changeable parameters in the Switch are as follows Switch Management 27 10 100 Fast Ethernet Switch User s Guide 28 Bridge Priority Bridge Priority can be from 0 to 65535 0 is equal to the highest Bridge Priority Bridge Hello Time The Hello Time can be from 1 to 10 seconds This is the interval between two transmissions of BPDU packets sent by the Root Bridge to tell all other Switches that it is indeed the Roo
46. he duplication of frames Frames transmitted between a pair of end stations can be confined to LANs that form a path between those end stations The functions that support the use and maintenance of filtering database information are 1 Permanent configuration of reserved addresses 2 Explicit configuration of static filtering information 3 Automatic learning of dynamic filtering information through observation of Switched Local Area Network traffic 4 Aging out of filtering information that has been automatically learned 24 Switch Management 10 100 Fast Ethernet Switch User s Guide 5 Calculation and configuration of Switched Local Area Network topology Aging Time The Aging Time is a parameter that affects the auto learn process of the Switch in terms of the network configuration Dynamic Entries which make up the auto learned node address are aged out of the address table according to the Aging Time that you set The Aging Time can be from 10 seconds to 1 000 000 seconds A very long Aging Time can result with the out of date Dynamic Entries that may cause incorrect packet filtering forwarding decisions In the opposite case if the Aging Time is too short many entries may be aged out soon resulting in a high percentage of received packets whose source addresses cannot be found in the address table Spanning Tree Algorithm The Spanning Tree Algorithm STA in the Switch allows you to create alternative pat
47. hernet Switch User s Guide The FDX Col LED indicators blink from yellow to green The power LED indicator will light yellow while the switch loads onboard software and performs a self test After approximately 20 seconds the LED will light green to indicate the switch is in a ready state The console LED indicator will remain ON if there is a connection at the RS 232 port otherwise this LED indicator is OFF The MII LED indicator will remain ON if there is a connection at the MII port otherwise this LED indicator is OFF If there is an active connection at the MII port The MII LED and the 100M and Link Act LED indicators for port 2x will remain ON otherwise the Link Act LED indicators are OFF The 100M LED indicator may remain ON or OFF depending on the transmission speed The System Load LED indicators will momentarily blink Power Failure As a precaution the Switch should be turned OFF in case of power failure When power is resumed turn the Switch ON At all times avoid leaving the Switch ON after the occurrence of a power failure Unpacking and Setup 9 10 100 Fast Ethernet Switch User s Guide IDENTIFYING EXTERNAL COMPONENTS This chapter describes the front panel rear panel and LED indicators of the Switch Front Panel The front panel of the Switch consists of 8 10 100 Mbps MDI X ports 1 uplink MDI II port a RS 232 communication port and LED indicators LI
48. horized Reseller D Link warrants the magnetic media containing software against failure during the warranty period No updates are provided D Link s sole obligation hereunder shall be to replace any defective software products with products which substantially conform to D Link s applicable published specifications Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials D Link makes no warranty that its software products will work in combination with any hardware or applications software products provided by third party that the operation of the software products will be uninterrupted or error free or that all defects in the software product will be corrected For any third party products listed in the D Link software product documentation or specifications as being compatible D Link will make reasonable efforts to provide compatibility except where the non compatibility is caused by bug or defect in the third party s product Warranty service for software products may be obtained by contacting a D Link office within the warranty period Where no Product Registration Card has been sent by Customer proof of purchase such as a copy of the dated purchased invoice must be provided D Link Offices to Contact for Warranty Service To obtain an RMA number for warranty service contact the D Link office nearest you A list of contact addresses for D Link s international offices is
49. hs with multiple switches or other types of bridges in your network These backup paths are idle until the Switch determines that a problem has developed in the primary paths When a primary path is lost the Switch providing the alternative path will automatically go into service with no operator intervention This automatic network reconfiguration provides maximum uptime to network users The concept of the Spanning Tree Algorithm is a complicated and complex subject and must be fully researched and understood Please read the following before making any changes Network loop detection and prevention With STA there will be only one path between any two LANs If there is more than one path forwarded packets will loop indefinitely STA detects any looped path and selects the path with the lowest path Switch Management 25 10 100 Fast Ethernet Switch User s Guide cost as the active path while blocking the other path and using it as the backup path Automatic topology re configuration When the path for which there is a backup path fails the backup path will be automatically activated and STA will automatically re configure the network topology STA Operation Levels STA operates on two levels the bridge level and the port level On the bridge level STA calculates the Bridge Identifier for each Switch then sets the Root Bridge and the Designated Bridges On the port level STA sets the Root Port and Designated Ports
50. ional 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for bridging between existing 10Mbps networks and new 100Mbps networks Switching LAN technology is a marked improvement over the previous generation of network bridges which were characterized by higher latencies Routers have also been used to segment local area networks but the cost of a router and the setup and maintenance required make routers relatively impractical Today s switches are an ideal solution to most kinds of local area network congestion problems 2 Introduction 10 100 Fast Ethernet Switch User s Guide Features The DES 3208 Switch was designed for easy installation and high performance in an environment where traffic on the network and the number of users increase continuously The DES 3208 Switch features Ports 8 high performance N way ports all operating at 10 100 Mbps for connection to servers and hubs All ports can be auto negotiated between 10Mbps 100Mbps Half duplex or full duplex connections Uplink MDI II media dependent interface port for uplink to another switch hub or repeater RS 232 DCE console port for diagnosing the Switch via a connection to a PC and Console Out of band management Media Independent Interface flexible media connection port for connection to different physical layer devices e g fiber Performance features Store and forward switching scheme capability to support rate adapt
51. k TEL 45 43 96 90 40 FAX 45 43 42 43 47 SINGAPORE D LINK SINGAPORE PTE LTD 77 Science Park Drive 03 03 CINTECH III Singapore Science Park Singapore 118256 TEL 65 774 6233 FAX 65 774 6322 AUSTRALIA D LINK AUSTRALIA PTY LTD Unit 16 390 Eastern Valley Way Roseville NSW 2069 Australia TEL 61 2 9417 7100 FAX 61 2 9417 1077 CHINA D LINK BEIJING 15th Floor Science and Technology Tower No 11 Baishigiao Road Haidian District Beijing 100081 China TEL 86 10 68467 106 68467 107 68467 108 68467109 FAX 86 10 68467110 JAPAN D LINK TOKYO SF 3 9 1 Togoshi Shinagawa ku Tokyo 142 Japan TEL 81 3 5751 2351 FAX 81 3 5751 2352 INDIA D LINK INDIA PVT LTD Plot No 5 Kurla Bandra Complex Rd Off Cst Rd Santacruz E Bombay 400 098 India TEL 91 22 61 1 2788 617 2478 80 611 2948 FAX 91 22 61 1 3503 617 2476 TAIWAN D LINK TAIWAN 2F No 233 2 Pao Chiao Rd Hsin Tien Taipei Taiwan R O C TEL 886 2 916 1600 FAX 886 2 914 6299 76 Index Registration Card Print type or use block letters Your name Mr Ms Organization Dept Your title at organization Telephone Fax Organization s full address Country Date of purchase Month Day Year Misc erage pe Product installed in computer e g Compaq computer serial No Applies to adapters only Product was purchased from Reseller s name Telephone Fax Reseller s full address Answers to th
52. n expiration of the Topology Change Timer the new root trap is sent out immediately after the Switch s selection as a new root Topology Change Topology Change trap is sent by the Switch when any of its configured ports tranisitions from the Learning state to the Forwarding state or from the Forwarding state to the Blocking state The trap is not sent if a new root trap is sent for the same transition Link Change Event This trap is sent whenever the link of a port changes from link up to link down or from link down to link up Port Partition This trap is sent whenever the port state enter the partition mode or automatic partitioning port disable when more than thirty two collisions occur while transmitting MIBs The information stored in the Switch is known as the Management Information Base MIB The Switch uses the standard MIB II Management Information Base module Consequently MIB values inside the Switch can be retrieved from any SNMP based network manager In addition to the standard MIB I the Switch also supports its own proprietary enterprise MIB as an extended Management Information Base These MIBs may also be retrieved by specifying the MIB s Object Identity OID at the network manager MIB values can be either read only or read write Read only MIBs variables can be either constants that are programmed into the Switch or variables that change while the Switch is in operation Examples of read only const
53. nance of the network Trap managers can receive traps sent from the Switch they must immediately take certain actions to avoid future failure or breakdown of the network Traps are messages that alert you of events that occur on the Switch The events can be as serious as a reboot someone accidentally turned OFF the Switch or less serious like a port status change The Switch generates traps and sends them to the network manager trap managers The following lists the types of events that can take place on the Switch System resets Errors Status changes Topology changes Operation You can also specify which network managers may receive traps from the Switch by setting a list of IP Addresses of the authorized network managers The following are trap types a trap manager will receive Cold Start This trap signifies that the Switch has been powered up and initialized such that software settings are reconfigured and hardware systems are rebooted A cold start is different from a factory reset Authentication Failure This trap signifies that an addressee or manager user on the Switch is not a valid user of the Switch and may have entered an incorrect community name New Root This trap indicates that the Switch has become the new root of the Spanning Tree the trap is sent by a bridge soon after its 22 Switch Management 10 100 Fast Ethernet Switch User s Guide election as the new root This implies that upo
54. nd with CRC error or misalignment bad framing Collisions The number of collision errors Late Collisions The number of collisions that occur at or after the 64 byte octet in the frame Using the Console Interface 10 100 Fast Ethernet Switch User s Guide Bytes Tx Bytes Sent The number of good bytes sent from the respective port Tx Good Frames Sent The number of good frames sent from the respective port Bytes Rx Bytes Received The number of good bytes received This also includes local and dropped packets Rx Good Frames Received The number of good frames received This also includes local and dropped packets Total Bytes Rx Total Bytes Received The number of bytes received good and bad Multicast Rx Multicast Frames Received The number of good multicast frames received This includes local and dropped multicast packets Broadcast Rx Broadcast Frames Received The number of good broadcast frames received This includes local and dropped broadcast packets 64 Octs 65 127 Octs 128 255 256 511 Octs 512 1023 Octs 1024 1518 Octs The number of good frames of various length ranges both valid and invalid Total Frames Rx Total Frames Received The number of frames received good and bad Spanning Tree Algorithm Parameters The Spanning Tree Algorithm Parameters can be used for creating alternative paths in your network This section will guide you thro
55. nsceiver 100BASE FX or TX 13 Transceiver address setting 13 Transmission Methods 69 Trap Type Authentication Failure 24 Cold Start 23 Link Change Event 24 New Root 24 Port Partition 24 Topology Change 24 Traps 23 Traps definition of 23 Tx Good Frames Sent 56 Unpacking 6 Unpacking and Setup 6 10 User Changeblel Parameters Bridge Forward Delay 30 Bridge Hello Time 29 Bridge Max Age 29 Bridge Priority 29 Port Priority 30 User Changeblel Parameters 29 Using the Console Interface 34 66 ventilation 7 VT100 compatible terminal 34 Weight 69 10 100 Fast Ethernet Switch User s Guide D Link Offices U S A D LINK SYSTEMS INC 5 Musick Irvine CA 92618 USA TEL 1 714 455 1688 FAX 1 714 455 2521 CANADA D LINK CANADA INC 2180 Dunwin Drive Unit 6 Mississauga Ontario LSL 5M8 Canada TEL 1 905 828 0260 FAX 1 905 828 5669 U K D LINK EUROPE LTD D Link House 6 Garland Road Stanmore London HA7 1DP U K TEL 44 181 235 5555 FAX 44 181 235 5500 GERMANY D LINK DEUTSCHLAND GMBH I G Bachstra e 2265812 65830 Kriftel Germany TEL 49 6192 97110 FAX 49 6192 971111 FRANCE D LINK FRANCE Le FLORILEGE 2 Allee de la Fresnerie 78330 Fontenay Le Fleury France TEL 33 1 30238688 FAX 33 1 30238689 SWEDEN D LINK A B World Trade Center P O Box 70396 107 24 Stockholm Sweden TEL 46 8 700 62 11 FAX 46 8 21 96 40 DENMARK D LINK DENMARK Naverland 2 DK 2600 Glostrup Copenhagen Denmar
56. nter 4 Type in your old password and press Enter 5 Type in the new password you have chosen and press Enter Type in the same new password in the following blank to verify that you have not mistyped it 6 Choose the SAVE command to let the password change take effect Using the Console Interface 39 10 100 Fast Ethernet Switch User s Guide 7 Choose EXIT to exit this screen This method can also be used by a Super User to change another user s password Adding and Deleting Users Access to the console whether using the console port or via TELNET is controlled using a user name and password Up to three of these user names can be defined The console interface will not let you delete the current logged in user however in order to prevent accidentally deleting all of the users with Super User privilege Only users with the Super User privilege can add new and delete users Adding a New User To add a new user 1 Choose User Account Change from the main menu DES 3208 Fast Ethernet Switch User Account Change Menu w User Ch Access Delete Users Change Password Figure 6 7 User Account Change Menu 2 Choose Create New User from the User Account Change menu 40 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide 3 Enter the new user name and assign an initial password Determine whether the new user should have Super User or General User privileges User Account Change
57. ocol Parameters from the Spanning Tree Algorithm menu 3 Enter the Bridge Max Age in the Bridge Max Age field 4 Enter the Bridge Hello Time in the Bridge Hello Time field 5 Enter the Bridge Forward Delay time in the Bridge Forward Delay field 6 Enter the Bridge Priority in the Bridge Priority field 58 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide 7 Go to the SAVE command and save the Protocol Parameters 8 Choose EXIT and hit the enter key to leave the Protocol Parameters Spanning Tree Algorithm Menu Protocol Parameters Spanning Tree Protocol BC bic Time Since Topology Changes 0 Topology Change Count 500 Designed Root 0000000000000000 Root Cost Hex 0 Root Port Max Forward Delay sec Hold Time sec Bridge Max Age 6 40 sec Bridge Hello Time 1 10 sec Bridge Forward Delay 4 30 sec Bridge Priority 0 0 Note 2 Forward Delay 1 Max Age Max Age gt 2 Hello Time 1 second Figure 6 21 Protocol Parameters STAP Port Parameters The STAP Port Parameters allows you to change the behind the scene parameters of the Spanning Tree Algorithm at the port level The parameters for this section have been fully explained in Chapter 5 Switch Management see STA Operation Levels On the port level and User changeable parameters It is recommended that you read these sections and or Chapter 5 first before changing any of the paramete
58. of 26 Aging Time range of 26 Alleviating network loop problems 31 Attaching the mounting brackets See Rack Installation Auto polarity detection 4 Automatic learning 26 Automatic topology re configuration Spanning Tree Algorithm 27 Boot File Name 48 Boot Protocol INDEX 48 TFTP ONLY 48 Boot Server IP Address 48 BOOTP the BOOTstrap Protocol 48 BOOTP broadcast 46 BOOTP protocol 46 BOOTP server 46 Bridge Level STA Operation Level Bridge Identifier 28 Bridge Priority 28 Designated Bridge 28 Root Bridge 27 Root Path Cost 28 Bridge MIB RFC 1268 5 Bridge Priority 33 Broadcast Rx Broadcast Frames Received 56 Bytes Rx Bytes Received 56 Bytes Tx Bytes Sent 56 Change the Port Configuration 53 Changing the Protocol Parameters 62 Changing the SNMP Trap Manager Configuration settings 51 Changing the STAP Port Parameters 63 Changing theSNMP Manager Configuration parameters settings 52 Changing your Password 41 CLEAR COUNTER 54 Collisions 55 Community name definition of 51 Community names Private 52 10 100 Fast Ethernet Switch User s Guide Public 52 Connecting The Switch 16 20 Connecting to the Switch VT100 compatible terminal 34 Console LED indicator 15 Console port RS 232 DCE 22 Console port settings 22 Console Usage Conventions 35 angle brackets 35 colon 35 keyboard keys 35 square brackets 35 UPPERCASE commands 36 Console Telnet Displa
59. of the device Allow enough ventilation space between the device and the objects around it 6 Unpacking and Setup 10 100 Fast Ethernet Switch User s Guide Figure 2 1 10 100 Fast Ethernet Switch installed on a Desktop or Shelf Rack Installation The DES 3208 can be mounted in an standard size 19 inch rack which can be placed in a wiring closet with other equipment To install attach the mounting brackets on the switch s front panel one on each side and secure them with the screws provided Figure 2 2A Attaching the mounting brackets to the 10 100 Fast Ethernet Switch Then use the screws provided with the equipment rack to mount the Switch in the rack Unpacking and Setup 7 10 100 Fast Ethernet Switch User s Guide Figure 2 2B Installing the 10 100 Fast Ethernet Switch in an equipment rack Power on The DES 3208 Switch can be used with AC power sources 100 240 VAC 50 60 Hz The power switch is located at the rear of the unit adjacent to the AC power connector and the system fan The Switch s power supply will adjust to the local power source automatically and may be turned on without having any or all LAN segment cables connected After the power switch is turned on the LED indicators should respond as follows All LED indicators will momentarily blink This blinking of the LED indicators represents a reset of the system 8 Unpacking and Setup 10 100 Fast Et
60. ogging In on the Console Screen 36 Logging In on the Switch Console 36 Lower Bridge Identifier 28 MAC Address Learning 69 MAC Rx Errors MAC Received Errors 55 Management 4 Management feature Spanning Tree Algorithm Protocol 5 Management Information Base MIB 24 Max Age Time 33 MDI II Media Dependent Interface 3 MIB s Object Identity OID 25 MIB I RFC 1156 5 MIB II RFC 1213 5 MII Media Independent Interface 3 MII Connector 13 MII LED indicator 15 MII port Port 2x shared connection with 12 Multicast Rx Multicast Frames Received 56 Network Classes Class A B C for Subnet Mask 45 Network loop detection and prevention Spanning Tree Algorithm 27 NEXTPAGE next page 58 61 NEXTPORT next port 54 64 Operating Temperature 68 Out of Band Management 21 Out of band management and console settings 46 Out of Band Console Setting menu 46 Oversize Frames 55 Overview of this User s Guide v Packet Forwarding 25 PC to Switch connecting the 16 Performance features 4 Performing a factory reset 65 Performing a System Reset 65 Port Configuration menu 52 53 Port Level STA Operation Level Designated Port 29 Path Cost 29 Port Priority 29 Root Bridge 28 Port Priority 33 Port State field 53 Port type settings Console 47 Out of Band 47 Power Consumption 68 Power Failure 10 Power LED indicator 11 14 Power on 9 Power Switch 12 PREPAGE previous page 58 61 PRE
61. oose SAVE and press Enter to let the changes take effect 5 Choose EXIT and hit the enter key to leave the Port Configuration menu DES 3208 Fast Ethernet Switch Port Configuration Port 1 8 i Port State lt Enable gt Port Status Link Down Auto Negotiation lt Enable gt Media 100 10 10 Duplex Mode Halt PREPORT NEXTPORT SAVE EXIT Figure 6 16 Port Configuration Menu Port Status Media Speed 10 100Mbps and Duplex Mode reflect the current conditions of the port and are read only fields and cannot be changed 50 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide Previously made modifications should be noticed the next time upon entering the Port Configuration menu You can use the PREPORT and NEXTPORT commands to view and modify the previous port and next port respectively as you wish Switch Monitoring The Switch allows you to keep statistics on the operation of each port The statistics obtained can be used to monitor the conditions and general efficiency of the Switch Displaying Port Statistics The display permits you to observe the condition of each individual port To display Statistic Counters 1 Choose Statistic Counters from the main menu 2 Enter the desired port in the Port 1 8 field 3 Choose EXIT to leave the Statistic Counters menu Use the PREPORT and NEXTPORT command to observe conditions on the previous port and next port respec
62. pendent location up to a distance of 100 meters When you are connecting a 100 or TX Transceiver to the MII connector prior to making cable connections make sure that the 100BASE FX or TX Transceiver address setting is set to 2 See the Transceiver manufacturer user s guide for more information The pin specifications for this connector appear in Appendix C Note When making cable or transceiver connections to the MII inteface connector make sure that 12 Identifying External Components 10 100 Fast Ethernet Switch User s Guide the the Switch is turned off after connecting turn the Switch on When disconnecting a cable or transceiver from the MII interface connector turn off the Switch then disconnect the cable or transceiver LED Indicators The LED indicators of the Switch include Power MII Console 100 M Link Act FDX Col and System Load The following shows the LED indicators for the Switch along with an explanation of each indicator MII POWER CONSOLE DES 3208 ise an Coie lt 100M Link Act es FDX COL 1 100m LnkAct mFDX mco DLink 7 S SYSTEM LOAD INDICATOR Figure 3 3 The DES 3208 Switch LED indicators Power After turning on the power the Power indicator on the front panel should light yellow to indicate the switch is loading onboard software and performing a self test After approximately 20 seconds
63. raum nicht benutzt sollten Sie es vom Stromnetz trennen Somit wird im Falle einer berspannung eine Besch digung vermieden Durch die L ftungs ffnungen d rfen niemals Gegenst nde oder Fl ssigkeiten in das Ger t gelangen Dies k nnte einen Brand bzw Elektrischen Schlag ausl sen ffnen Sie niemals das Ger t Das Ger t darf aus Gr nden der elektrischen Sicherheit nur von authorisiertem Servicepersonal ge ffnet werden Wenn folgende Situationen auftreten ist das Ger t vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu berpr fen a Netzkabel oder Netzstecker sint besch digt b Fl ssigkeit ist in das Ger t eingedrungen Das Ger t war Feuchtigkeit ausgesetzt d Wenn das Ger t nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen e Das Ger t ist gefallen und oder das Geh use ist besch digt f Wenn das Ger t deutliche Anzeichen eines Defektes aufweist Bei Reparaturen d rfen nur Orginalersatzteile bzw den Orginalteilen entsprechende Teile verwendet werden Der Einsatz von ungeeigneten Ersatzteilen kann eine weitere Besch digung hervorrufen Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner Somit stellen Sie die Betriebssicherheit des Ger tes sicher WARRANTIES EXCLUSIVE IF THE D LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE THE CUSTOMER S SOLE REMEDY SHALL BE AT D L
64. rned Using the Console Interface 47 10 100 Fast Ethernet Switch User s Guide on or when a system reset occurs The Switch allows traps to be routed to up to four different network management hosts For a detail list of Trap Types used for this Switch see Chapter 5 Switch Management Traps section DES 3208 Fast Ethernet Switch SNMP Trap Manager Configuration IP Address SNMP Community String Status lt Invalid gt 17 lt Invalid gt lt lt Invalid gt lt lt Invalid gt Figure 6 14 SNMP Trap Manager Configuration Menu The following trap parameters can be set IP Address gives the IP address of the network management station to receive the trap SNMP Community String determines the SNMP community name to be included in the trap request Status determines whether this trap entry is valid or invalid You can delete an entry by changing its status to Invalid 48 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide SNMP Manager Configuration SNMP Security Community Names SNMP version 1 implements a rudimentary form of security by requiring that each request includes a community name A community name is an arbitrary string of characters used as a password to control access to the Switch If the Switch receives a request with a community name it does not recognize it will trigger an authentication trap The SNMP allows up to four different community nam
65. rs To change the STAP Port Parameters 1 Choose Spanning Tree Algorithm from the main menu 2 Choose STAP Port Parameters from the Spanning Tree Algorithm menu 3 Enter the desired port in the Port Number 1 8 field 4 Enter the desired Port Path Cost in the Port Path Cost 1 65535 field Using the Console Interface 59 10 100 Fast Ethernet Switch User s Guide 5 Enter the desired Port Priority in the Port Priority 0 255 field 6 Go to the SAVE command and save the STAP Port Parameters 7 Choose EXIT to leave the STAP Port Parameters The PREPORT command allows you to see the parameters of the previous port and the NEXTPORT command allows you to see the parameters of the next port Spanning Tree Algorithm Menu STAP Port Parameters Port Number 1 8 State Disabled Designated Root 0000000000000000 Designated Cost 0 Designated Bridge 0000000000000000 Designated Port 0 Port Path Cost 1 0 0 1 Port Priority 0 0xFF 1801 PREPORT NEXTPORT SAVE Figure 6 22 STAP Port Parameters Resetting the Switch You can use the console interface to reset the Switch stack either doing a System Reset which restarts the Switch and is identical to powering the Switch off and back on again or a Factory Reset which sets all of the Switch s parameters to what they were when the Switch was delivered from the factory 60 Using the Console Interface 10 100 Fast Ethernet Switch User s
66. s a packet to Bridge 2 Bridge 2 will broadcast it to Bridge 3 and Bridge 3 will broadcast it to Bridge l and so on The broadcast packet will be passed indefinitely in a loop causing a serious network failure To alleviate network loop problems STA can be applied as shown in Figure 5 2 In this example STA breaks the loop by blocking the connection between Bridge 1 and 2 The decision to block a particular connection is based on the STA calculation of the most current Bridge and Port settings Now if Bridge 1 broadcasts a packet to Bridge 3 then Bridge 3 will broadcast it to Bridge 2 and the broadcast will end there STA setup can be somewhat complex Therefore you are advised to keep the default factory settings and STA will automatically assign root bridges ports and block loop connections However if you need to customize the STA parameters refer to Table 5 1 Switch Management 29 10 100 Fast Ethernet Switch User s Guide LAN 1 Path Cost 100 Port 1 Bridge 1 Bridge ID 21 Port 2 Path Cost 100 Path Cost 100 LAN 2 Bridge ID 15 th Cost 1 SS Path Cost 100 Bridge ID 30 Path Cost 100 LAN 3 Figure 5 1 Before Applying the STA Rules LAN 1 Root Port Root Path Cost 100 Bridge ID 21 Designated Port Designated Port Port 1 LAN 2 Bri Root Path Cost 0 ridge 3 Bridge ID 15 Port 2 Block
67. s turns the Switch on and off To turn on the system press the switch to the 1 position to turn off press the switch to the 0 position Identifying External Components 11 10 100 Fast Ethernet Switch User s Guide AC Power Connector This is a three pronged connector that supports the power cord Plug in the female connector of the provided power cord into this connector and the male into a power outlet Supported input voltages range from 100 240 VAC at 50 60 Hz System Fan These fan are used to circulate air inside the Switch and also to dissipate heat The sides of the system also provide heat vents to serve the same purpose Do not block these openings and leave adequate space at the rear and sides of the Switch for proper ventilation Be reminded that without proper heat dissipation and air circulation system components might overheat which could lead to system failure MII Connector The MII Media Independent Interface interface connector is a 40 pin connector for use with flexible media e g fiber cable This connector has a shared connection with port 2x and when connected the MII connector takes operational precedence over port 2x If you are using a 10 5 Transceiver This connector is used for connection between two independent locations up to a distance of two kilometers 0 If you are using a LOOBASE TX Transceiver this connector is used for connection between two inde
68. se the user may be required to take adequate measures ER ORB FRIERBESERE Ale VCC o dE ic A WARE OBER ZERE T TALER FEAET LEAVE Oi leg EE EC LERENA LARVER TABLE OF CONTENTS ABOUT THIS GUIDE V I EA a eniin UM ELE V OVERVIEW OF THIS UsgpR eOGump V INTRODUCTION eere eee eod nannten 1 FAST ETHERNET TECHNOLOGY eee eee nemen emen enes 1 SWITCHING TECHNOLOGY eee hehe enne enne inen eene enne ener enne 2 FEATURES I A 3 D HH 3 Performance features eaae eese Management eR qp EUR Ce Re 4 UNPACKING AND SETUP 22000000000000000000002200000000000000000000000 000000 00000000 5 UNPACKING E 5 6 DESKTOP OR SHELF INSTALLATION eee eee eene 6 RACK INSTALLATION eere e enemememennnnnnnnnen n nsns e ese ese ese e esas s esses 7 POWER EE 8 P wer Failure et e ee ase Ee BeBe ech 9 IDENTIFYING EXTERNAL COMPONENTS eee e eere eee enne 10 ERONTBANELE Ja eode deeg deve etaed eee 10 REAR PANEL anna 11 LED INDICATORS eerie ere terree rre teret ette 13 CONNECTING THE SWITCH eene eee eee eee enne eene 00000
69. t Bridge If you set a Hello Time for your Switch and it is not the Root Bridge the set Hello Time will be used if and when your Switch becomes the Root Bridge Note that the Hello Time cannot be longer than the Max Age Otherwise a configuration error will occur Bridge Max Age The Max Age can be from 6 to 40 seconds At the end of the Max Age if a BPDU has still not been received from the Root Bridge your Switch will start sending its own BPDU to all other Switches for permission to become the Root Bridge If it turns out that your Switch has the lowest Bridge Identifier it will become the Root Bridge Bridge Forward Delay The Forward Delay can be from 4 to 30 seconds This is the time any port on the Switch spends in the listening state while moving from the blocking state to the forwarding state Observe the following formulas when you set the above parameters 1 Max Age 2 x Forward Delay 1 second 2 Age 2 x Hello Time 1 second Port Priority A Port Priority can be from 0 to 255 The lower the number the greater the probability the port will be chosen as the Root Port Switch Management 10 100 Fast Ethernet Switch User s Guide Illustration of STA A simple illustration of three Bridges or the Switch connected in a loop is depicted in Figure 5 1 In this example you can anticipate some major network problems if the STA assistance is not applied For instance if Bridge 1 broadcast
70. ther TFTP ONLY or BOOTP amp TFTP Applies only if the Software Update is set to enabled Boot Server IP Address The IP address of the TFTP server where the configuration file is located This entry is used only if the Software Update is set to enabled and your boot protocol is tftp Using the Console Interface 45 10 100 Fast Ethernet Switch User s Guide only If you are using bootp tftp mode or if Send BOOTP Request on Power Up see TCP IP Parameters Configuration Menu is set to Yes the address will be obtained from the BOOTP server Boot File Name The pathname of the configuration file on your TFTP server This entry is used only if your boot protocol is TFTP ONLY if you are using BOOTP amp TFTP mode the pathname will be obtained from the BOOTP server DES 3208 Fast Ethernet Switch Software Update Software Update gt Software Update Mode lt Network gt Boot Protocol lt BOOTP amp TFTP gt Boot Server IP Address 401 1 Boot File Name des3208 cfg Last Boot Server IP Address 10 1 1 1 Figure 6 12 Software Update Menu System Configuration Menu The System Configuration Menu screen shows various pieces of information about your Switch and allows you to set the System Name System Location and System Contact These settings can be retrieved from the Switch using SNMP requests allowing these settings to be used for network management purposes Each of these fields can contain up to
71. tively The CLEAR COUNTER command clears all counters on the current port to zero This command however does not terminate or reset the statistic counters on the other ports only the currently displayed port Using the Console Interface 51 10 100 Fast Ethernet Switch User s Guide DES 3208 Fast Ethernet Switch Statistics Counters lPort 1 8 ON Franes Frames Sec Frames Rx Errors 0 0 Multicast 517 ICRC Errors Broadcast Rx 18387 Oversize Frames Rx Good 19033 Fragments Tx Good Jabber 0 Collisions 64 Octs Late Collisions 65 127 Octs 128 255 Octs 256 S11 Octs 512 1023 Octs 1024 1522 Octs Bytes Bytes Sec 6823 163 Total Frames Rx 22860 Bytes Rx 3536243 13803 Total Bytes Rx 3823148 16238 PREPORT NEXTPORT CLEAR COUNTER Figure 6 17 Statistics Counters The statistic counters displayed are defined as follows 52 MAC Rx Errors MAC Received Errors The number of frames with received MAC Errors assertion of RXEr CRC Errors The number of frames with valid packet length and misalignment or odd number of nibbles Oversize Frames The number of good frames with length greater than 1518 bytes and therefore are greater than the maximum legal length Fragments The number of good frames with length less than the 64 byte octet minimum defined by the Ethernet standard These are usually caused by collisions Jabber The number of frames with length more than 1518 bytes a
72. ugh the steps Using the Console Interface 53 10 100 Fast Ethernet Switch User s Guide involved in changing the parameters in the Spanning Tree Algorithm However before changing any of the parameters in the Protocol Parameters or STAP Port Parameters please read Chapter 5 s Spanning Tree Algorithm and become familiar with the complex aspects of the STA It is recommended that you leave these parameters as they are If you however must change them follow the steps in this section which covers the Forwarding Table Custom Filtering Table Protocol Parameters and STAP Port Parameters Forwarding Table The Forwarding Table displays the list of MAC address entries obtained from the Switch It represents a table that contains information about unicast entries for which the Switch has forwarding and or filtering information Age Time The age time is in seconds with 300 seconds being the default value and has a range from 30 to 1 000 000 seconds See the Age Time section in chapter 5 Switch Management Under the Source Address heading a total of sixteen 16 addresses will be seen while the Source Address list holds a total number of 8 000 entries Under the Port heading a total of sixteen 16 port will be displayed for each corresponding Source Addresses Under the Status heading a total of sixteen 16 status will be displayed for each corresponding Source Addresses The status of the MAC addresses reflects ho
73. w the Switch got the address and should show either 1 Management 2 Learned or 3 Self The following explain each status Management This status indicates that the MAC address was obtained through the direct entry from a network manager OG Learned This status indicates that the MAC address was obtained from the LAN network 54 Using the Console Interface 10 100 Fast Ethernet Switch User s Guide Self This status means that the MAC address was obtained from the Switch itself To display the Forwarding Table entries 1 Choose Spanning Tree Algorithm from the main menu 2 Choose Forwarding Table from the Spanning Tree Algorithm menu 3 In the Port 1 8 field type in the desired port you would like displayed 4 Choose the PREPAGE command to see the previous page and the NEXTPAGE command to see the next page Choose EXIT to leave the Forwarding Table Spanning Tree Algorithm Menu Forwarding Table Age out Time 10 1000000 sec Source Address Port Status 00 80 C8 02 00 04 0 Self 00 80 C8 16 BA 80 3 Learned PREPAGE NEXTPAGE SAVE EXIT Figure 6 18 STA Forwarding Table Custom Filtering Table The Custom Filtering Table contains filtering information configured into the Switch by local or network management specifying the set of ports to which packets received from specific ports and containing specific destination addresses that are allowed to be forwarded You can use the Custom Filtering Tabl
74. y Timeout parameter 50 CRC Errors 55 Crossover cable 71 CSMA CD Ethernet protocol 1 Custom Filtering Table Destination Address heading 60 Receive Port heading 60 Data filtering 4 Data filtering rate 4 Data forwarding 4 Data forwarding rate 4 Default Gateway 46 Deleting a User 44 Desktop or Shelf Installation 7 Destination Address 61 Dimensions 68 Displaying Forwarding Table entries 58 Displaying Port Statistics 54 D Link proprietary MIB 5 D View Network Management Program 5 Dynamic filtering 26 Dynamic Filtering definition of 59 Ethernet interface in band communication 45 Factory Reset 65 72 Factory Reset NV RAM to Default Value 65 Fast Ethernet Technology 1 FDX Col LED indicator 15 Features 3 3 Ports 3 RE 232 DCE console port 3 Uplink 3 Filtering Database 25 Flash memory 5 Forward Delay 33 Forwarding Table 60 Port 1 8 field 58 Source Address 57 Status 57 58 Fragments 55 Front Panel 11 Full and Half duplex 4 General User 21 38 heat dissipation 7 Hello Time 33 Hub to Switch connecting the 17 Hub without Uplink MDI II port 18 Humidity 68 Identifying External Components 11 15 Illustration of STA 31 Introduction 1 5 IP address 51 SNMP and TELNET communication 45 IP Addresses and SNMP Community Names 22 Jabber 55 LAN card 17 Late Collisions 55 LED Indicators 14 Link Act LED indicator 15 Local console management 21 Index L

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