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3Com 7600 User Manual

Manual is about: Fast Ethernet Card

Summary of 7600

  • Page 1

    ? http://www.3com.Com/ 7600 fast ethernet card user guide p r part no. Dua7600-0aaa01 published november 1997 abtthgde.Book page i tuesday, june 23, 1998 10:29 am.

  • Page 2

    Ii 3com corporation q 5400 bayfront plaza q santa clara, california q 95052-8145 © 3com corporation, 1996. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without...

  • Page 3: Ontents

    I c ontents a bout t his g uide who should use this guide 1 how to use this guide 1 conventions 2 informational and warning conventions 2 typographical conventions 2 related manuals 2 documentation road map 3 1 o verview of the 7600 c ard about the 7600 card 1-1 a look at the 7600 card 1-1 port conf...

  • Page 4

    Ii installing the 7600 card module 2-4 removing the 7600 card module 2-4 installing a fast ethernet physical module 2-5 connecting to network devices 2-5 connecting to a local management terminal 2-6 7600 card system states 2-7 system states and leds 2-7 power-up 2-8 power-on self-test 2-8 normal op...

  • Page 5: Lan

    Iii 5 c onfiguring v irtual lan s display current bridge configuration 5-1 attach fast ethernet port to bridge 5-2 attach internal atm port to bridge 5-3 6 f ast e thernet and b ridge m anagement t asks fast ethernet port attributes and statistics 6-2 disable a fast ethernet port 6-5 display broadca...

  • Page 6: Atm R

    Iv 7 m anaging atm r esources display atm port attributes and statistics 7-2 display bridge atm address 7-3 update bridge atm address 7-4 display tm configuration 7-5 enable tm 7-6 display tm clients 7-6 add tm client 7-8 remove tm client 7-8 update uni version 7-9 enable/disable atm port admin stat...

  • Page 7: Lan

    V 9 s etting n etwork p arameters display current ip configuration 9-2 update ip address 9-2 update default gateway 9-3 update subnet mask 9-4 display snmp configuration 9-4 update nms ip address 9-5 10 m anaging s ystem f unctions display software version 10-2 display software download status 10-3 ...

  • Page 8: Atm, Lan E

    Vi monitoring ports 11-5 transparent bridges 11-6 store-and-forward 11-6 forwarding database 11-7 learning station addresses 11-7 static addresses 11-8 spanning tree protocol 11-8 re-configuring the spanning tree 11-10 disabling the stp 11-10 management bridge parameters 11-11 bridged-lan environmen...

  • Page 9: Atm N

    Vii bridges in the 7600 card 12-10 bridge forwarding database 12-12 address resolution 12-12 learning addresses 12-13 les address registration in the 7600 card 12-13 aging in the le_arp cache 12-14 bridge frame forwarding logic 12-14 data transmission over an elan 12-15 unicast frames 12-15 unknown ...

  • Page 10: 7600 F

    Viii 14 d evice m anagement user interfaces and protocols 14-1 in-band & out-of-band management 14-2 7600 card management 14-3 local management (lm) 14-3 simple network management protocol (snmp) 14-4 virtual terminal protocols 14-7 15 s ystem m odes , a ttributes , and t uning forwarding modes 15-1...

  • Page 11

    Ix environmental c-2 indicators c-2 management c-2 standards compliance c-3 safety c-3 electromagnetic emissions (agency certifications) c-3 communications protocols c-3 management protocols c-3 g lossary abtthgde.Book page ix tuesday, june 23, 1998 10:29 am.

  • Page 12: Bout

    Who should use this guide 1 a bout t his g uide the 7600 fast ethernet card user guide provides the information required to understand how the 7600 card works in atm and ethernet environments. If the information in the release notes shipped with your product differs from the information in this guid...

  • Page 13

    2 a bout t his g uide conventions tables 1 and 2 list conventions used throughout this guide. Informational and warning conventions table 1 lists informational and warning conventions. Typographical conventions table 2 lists the typographical conventions used by this guide. Related manuals table 3 l...

  • Page 14

    Related manuals 3 documentation road map the documentation road map in table 4 helps you locate specific information in the 7600 card documentation set. . Transcend enterprise manager, atm and vlan management dua2785-0naa03 table 3 7600 card documentation and related manuals (continued) manual name ...

  • Page 15: Verview

    1 o verview of the 7600 c ard this chapter provides an overview of the 7600 fast ethernet interface card and its major features and components. About the 7600 card the 7600 card provides up to 16 fast ethernet fiber optic or copper ports and is based on multiple asic zipchip technology. Featuring a ...

  • Page 16

    1-2 c hapter 1: o verview of the 7600 c ard figure 1-1 front panel of the 7600 card with full configuration figure 1-2 base card with plates covering ports 9-16 (optional modules) abtthgde.Book page 2 tuesday, june 23, 1998 10:29 am.

  • Page 17

    7600 card capabilities 1-3 connectors fast ethernet 100base-fx interface connections are made through sc connectors; fast ethernet 100base-tx interface connections are made through rj-45 connectors. These are shown in figure 1-3 and figure 1-4 respectively. Figure 1-3 physical module with sc connect...

  • Page 18

    1-4 c hapter 1: o verview of the 7600 c ard switch and is similar in functionality to the 7200 ethernet/atm interface card. 7600 card benefits fast ethernet switching works with virtual lans and management to ensure that information flow does not cross virtual lan boundaries. The 7600 card provides ...

  • Page 19

    Typical applications of the 7600 card 1-5 virtual lan can incorporate both legacy lans and atm devices. Virtual lans allow the establishment of logical workgroups, independent of physical connections, to achieve more flexible management. Using this feature, you can dynamically set up and manage work...

  • Page 20

    1-6 c hapter 1: o verview of the 7600 c ard figure 1-5 fast ethernet backbone abtthgde.Book page 6 tuesday, june 23, 1998 10:29 am.

  • Page 21

    Typical applications of the 7600 card 1-7 server farm figure 1-6 shows the 7600 card used in a “server farm”. Up to 16 servers can be connected through fast ethernet links to the 7600 card. The host cellplex 7000 is shown connected through atm links to the super-stack ii switch 2700 units located on...

  • Page 22: Tarting

    I chapter 2 installation and power-up chapter 3 fast setup s tarting u p abtthgde.Book page 9 tuesday, june 23, 1998 10:29 am.

  • Page 23: Nstallation

    2 i nstallation and p ower - up this chapter describes the installation of the 7600 card in a cellplex 7000 atm switch, the physical connections to the 7600 card, and the 7600 card power-up procedure. It also includes a summary of system states. The following topics are discussed: q safety precautio...

  • Page 24

    2-2 c hapter 2: i nstallation and p ower - up powered on, this could cause burns or other bodily harm, as well as system damage. Do not operate the unit in a location where the maximum ambient temperature exceeds 40 degrees c. Do not plug in, turn on or attempt to operate an obviously damaged unit. ...

  • Page 25

    Vorsichtsmaßnahmen 2-3 vorsichtsmaßnahm en jede wartung sollte nur von befugtem wartungspersonal durchgeführt werden. Lesen sie die folgenden vorsichtsmaßnahmen sorgfältig, um das risiko von stromschlag oder brandgefahr zu vermeiden. Wenn sie ersatzteile handhaben, benutzen sie immer ein band am han...

  • Page 26

    2-4 c hapter 2: i nstallation and p ower - up installing and removing the 7600 card modules the following section discusses how to install and remove the 7600 card and its optional modules. Installing the 7600 card module to install the 7600 card module into the cellplex 7000 chassis, perform the fo...

  • Page 27

    Connecting to network devices 2-5 installing a fast ethernet physical module you can install up to four, 2-port fast ethernet physical modules on to the 7600 card. Each module can be configured for either 100base-fx or 100base-tx connections. The 7600 card is supplied with 12 male/female spacers wit...

  • Page 28

    2-6 c hapter 2: i nstallation and p ower - up applicable, set the port on the connected device to mdi and use a straight-through cable. Connecting to a local management terminal the following section describes the physical connection of the 7600 card to a local terminal via the cellplex 7000 switch....

  • Page 29

    7600 card system states 2-7 7600 card system states this section describes the different system states of the 7600 card and how they are indicated on the led display. System states and leds the following table 2-2 lists the system states of the 7600 card module in the first column. The state in whic...

  • Page 30

    2-8 c hapter 2: i nstallation and p ower - up power-up when the 7600 card is powered-up, it automatically begins the power-up phase and initiates the power-on self-test. Power-on self-test the 7600 card’s automatic power-on self-test verifies that every component in the system is fully functional. W...

  • Page 31

    Normal operation 2-9 the purpose of the fast ethernet leds is to display the connection status and traffic status on the corresponding fast ethernet port. These are displayed according to the following table: table 2-4 fast ethernet port leds led (color) meaning link status (green) the port is conne...

  • Page 32: Ast

    3 f ast s etup this chapter describes two methods of configuring the 7600 card which allow it to function in the network almost immediately. The following methods are discussed: q integrated fast setup of the host cellplex 7000 q multi-context fast setup of the 7600 card rapid configuration after th...

  • Page 33

    3-2 c hapter 3: f ast s etup cellplex 7000 integrated fast setup the cellplex 7000 switch local management software features an integrated fast setup procedure which configures both the switch and all interface cards installed in it in one continuous dialog. Box-oriented setup the integrated fast se...

  • Page 34

    Cellplex 7000 integrated fast setup 3-3 switch setup mode the switch setup mode focusses only on the cellplex 7000 switch and its atm ports without altering interface card configuration. The switch setup mode is provided to allow you to retain special settings in the interface cards. Setup mode sele...

  • Page 35

    3-4 c hapter 3: f ast s etup setup procedure sections the integrated fast setup consists of the following steps or sections: navigation aids the following short-cut characters are provided to move between sections of the setup procedure: table 3-1 integrated fast setup procedure sections setup secti...

  • Page 36

    Cellplex 7000 integrated fast setup 3-5 integrated fast setup operation the integrated fast setup is initiated from the lma main menu of the cellplex 7000 . The cellplex main menu appears as follows: select the menu item: (9) fst: fast setup note that the integrated fast setup “full” setup mode may ...

  • Page 37

    3-6 c hapter 3: f ast s etup example dialog the following dialog appears on the screen: network prefix section now reading the modules configuration, please wait ... Special module configuration will be overridden by fast setup. Continue full fast setup or only switch fast setup (s, f): f ***note: f...

  • Page 38

    Cellplex 7000 integrated fast setup 3-7 le parameters section lecs address section uni/nni parameters section le parameters =------------ resident lecs state (1-enable, 0-disable): 0 les state (1-enable, 0-disable): 0 lecs address --=--------- active lecs addr - net prefix: 47.00.00.00.00.00.3c.00.0...

  • Page 39

    3-8 c hapter 3: f ast s etup le client configuration section virtual network configuration section le client configuration -=--------------------- *** hit enter after vn #7 for end of potential elan names list. Vn #1 elan name: admin vn #2 elan name: finance vn #3 elan name: engineering vn #4 elan n...

  • Page 40

    Cellplex 7000 integrated fast setup 3-9 admin vn management configuration section confirmation dialog section admin vn management configuration ----------=----------------------- switch ip address: 100.0.0.1 slot #3 ip address: 100.0.0.100 nms address: 255.255.255.0 default gateway: 255.255.255.255 ...

  • Page 41

    3-10 c hapter 3: f ast s etup multi-context fast setup this section describes how to perform the card-specific multi-context fast setup to perform a rapid configuration of the 7600 card. Port context for the purpose of management, the 16 fast ethernet ports of the 7600 card are divided into four con...

  • Page 42

    Multi-context fast setup 3-11 subnet masks, can be assigned to each logical bridge defined in the virtual network configuration. Q system mode configuration. The 7600 card can be configured to operate in one mode: lan emulation (le). Editing guidelines the following are the editing rules for fast se...

  • Page 43

    3-12 c hapter 3: f ast s etup multi-context setup operation from the cellplex 7000 main menu enter = where is the number of the slot in which the 7600 card is installed. The 7600 card admin main menu appears as in the following example: to perform the multi-context fast setup use menu item [9]fast f...

  • Page 44

    Multi-context fast setup 3-13 virtual network configuration section elan configuration section management configuration section virtual network configuration ----------------------------- fast ethernet port #1 belongs to bridge no.(0-3): 0 fast ethernet port #2 belongs to bridge no.(0-3): 0 fast eth...

  • Page 45

    3-14 c hapter 3: f ast s etup system mode configuration section the new configuration is displayed for this context. Confirmation dialog section at this point you are asked if you want to enter fast setup for contexts 1, 2, and 3. System mode configuration ------------------------- enter system mode...

  • Page 46: 7600 C

    Ii chapter 4 local management basics chapter 5 configuring virtual lans chapter 6 fast ethernet and bridge management tasks chapter 7 managing atm resources chapter 8 managing lan emulation clients chapter 9 setting network parameters chapter 10 managing system functions 7600 c ard m anagement t ask...

  • Page 47: Ocal

    4 l ocal m anagement b asics this chapter describes the use of the 7600 fast ethernet interface card administration console, its main menu display and its controls. A menu index is also included which provides a reference to the command description for each menu command. Management capabilities the ...

  • Page 48

    4-2 c hapter 4: l ocal m anagement b asics figure 4-1 hierarchic menu structure main menu the main menu is accessed from the cellplex 7000 main menu by typing = where “” is the number of the slot in which the 7600 card is installed. Figure 4-2 shows the main menu. Figure 4-2 main menu the arrow symb...

  • Page 49

    Menu hierarchy 4-3 port context for the purpose of management, the 16 fast ethernet ports of the 7600 card are divided into four contexts as follows: . The management menus and commands focus on one context at a time. Each menu has the currently active context displayed above it. To work with a cert...

  • Page 50

    4-4 c hapter 4: l ocal m anagement b asics entry of the stp submenu’s 3 option produces the prompt: (3)bridge\(4)stp\(3)port>. Finally, entering 1 finalizes the prompt as: (3)bridge\(4)stp\(3)port\(1)display>> direct access to submenus to select an embedded sub-menu or settings-option several levels...

  • Page 51

    Menu hierarchy 4-5 table 4-2 menu navigation functions type: to go to: \ main menu from any point. - previous menu. Left/right arrows back and forth within the command line. Home beginning of the command line. End end of the command line. .N context n (0-3) =n another module n=0: switch module n=1-4...

  • Page 52

    4-6 c hapter 4: l ocal m anagement b asics menu index the following index shows where to find the description of each menu action in the following chapters. The index has the same structure as the menu hierarchy. System management menu [1] system . . . . . . . [1] display . . . . . . .. . . . . . . ...

  • Page 53

    Menu index 4-7 . . . . . . . . . . . . . . .[3] state . . . . . . . . .. . . . . . . . . . . . . . . 6-6 . . . . . . . [4] update . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 6-7 bridge menu [3] bridge . . . . . . . [1] display . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 6...

  • Page 54

    4-8 c hapter 4: l ocal m anagement b asics . . . . . . . [3] vcc . . . . . . . [4] tm . . . . . . . . . . . . . [1] display . . . . . . . . . . . . . . . . . . . . 7-5 . . . . . . . . . . . . . [2] enable . . . . . . . . . . . . . . . . . . . . 7-6 . . . . . . . . . . . . . [3] client . . . . . . . ...

  • Page 55

    Menu index 4-9 virtual lan menu [6] vns . . . . . . . [1] display . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 5-1 . . . . . . . [4] ethernet . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 5-2 . . . . . . . [5] atm . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . ...

  • Page 56: Onfiguring

    5 c onfiguring v irtual lan s this chapter contains detailed descriptions of common management tasks for virtual lans (vlans) connected to the 7600 card. Please see “virtual lans in the 7600 card” on page 12-18 for general background material concerning vlans and how they are defined in the 7600 car...

  • Page 57

    5-2 c hapter 5: c onfiguring v irtual lan s example enter: [6] [1] the following is displayed: figure 5-1 bridge configuration display attach fast ethernet port to bridge enter the bridge number and a fast ethernet port to attach a specific fast ethernet port to the bridge. The initial default confi...

  • Page 58

    Attach internal atm port to bridge 5-3 example enter: [6] [4] 1 3 fast ethernet port #3 is attached to bridge #1. Attach internal atm port to bridge enter the bridge number and y/n to attach/detach the internal atm downlink port to an bridge. The initial default configuration is a single bridge that...

  • Page 59: Ast

    6 f ast e thernet and b ridge m anagement t asks this chapter contains detailed descriptions of common management tasks for fast ethernet lans connected to the 7600 card. Refer to chapter 11 “ethernet lans and bridges in the 7400 card” for general background material concerning ethernet lans. The fo...

  • Page 60

    6-2 c hapter 6: f ast e thernet and b ridge m anagement t asks managing the spanning tree protocol - bridge-wide q display stp enable status q disable stp on bridge q display bridge stp attributes q update bridge-wide stp parameters q update bridge-priority q update bridge-max-age q update bridge-he...

  • Page 61

    Fast ethernet port attributes and statistics 6-3 . Table 6-2 ethernet port attributes name description mac address the mac address uniquely identifying the ethernet port. Admin status the port administrative status. Q up: port is enabled by management q down: port is disabled by management oper stat...

  • Page 62

    6-4 c hapter 6: f ast e thernet and b ridge m anagement t asks example enter: [2] [1] 1 the following information for port #1 is displayed: figure 6-1 fast ethernet port attributes and statistics display in unknown all frames received on the port and discarded due to unknown protocols. Out octets al...

  • Page 63

    Disable a fast ethernet port 6-5 disable a fast ethernet port disable or enable the admin status of a fast ethernet port (see “fast ethernet ports” on page 11-5 for general information about ethernet ports). Example enter: [2] [2] 4 u ethernet port 4 is enabled. The following message is displayed on...

  • Page 64

    6-6 c hapter 6: f ast e thernet and b ridge m anagement t asks example enter: [2] [3] [1] the following is displayed: figure 6-2 broadcast throttling attributes display. Update broadcast threshold updates broadcast attributes. Example enter: [2] [3] [2] 4 500 300 the high and low thresholds for port...

  • Page 65

    Update fast ethernet port 6-7 example enter: [2] [3] [3] 4 e broadcast throttling for port 4 is enabled. Update fast ethernet port updates fast ethernet port attributes. For more information see “fast ethernet port characteristics” on page 6-3 and see “fast ethernet ports” on page 11-5. The paramete...

  • Page 66

    6-8 c hapter 6: f ast e thernet and b ridge m anagement t asks example 1 - for tx port type enter: [2] [4] 1 h the fast ethernet tx port #1 is set to half duplex. Example 2 - for fx port type enter: [ 2] [4] 1 d 10 the fast ethernet tx port #1 is set to automode for duplex and a fixed speed of 10 mb...

  • Page 67

    Bridge attributes and statistics 6-9 example enter: [3] [1] 0 the following is displayed. Figure 6-3 bridge attributes and statistics display table 6-13 bridge attributes and statistics name description bridge address the mac address uniquely identifying the logical bridge. Bridge-port the logical b...

  • Page 68

    6-10 c hapter 6: f ast e thernet and b ridge m anagement t asks update bridge-aging- time update the bridge fdb parameter bridge-aging-time for a specified bridge. For more information about bridges in ethernet lans see “transparent bridges” on page 11-6. Example enter: [3] [5] 0 900 sets the bridge...

  • Page 69

    Bridge-port attributes and statistics 6-11 example enter: [3] [2] 0 1 the following is displayed: figure 6-4 bridge attributes and statistics display delay exceeded discards the number of frames discarded by the port, due to excessive transit delay through the bridge. Maximum transfer unit (mtu) exc...

  • Page 70

    6-12 c hapter 6: f ast e thernet and b ridge m anagement t asks display all entries in forwarding database displays the complete forwarding database (fdb) for the specified bridge, including all addresses, the ports they are mapped to and their status. Each database entry is identified by an address...

  • Page 71

    Display all entries in forwarding database 6-13 figure 6-5 forwarding database display ----------------------------------------------------- addr: 0180c2000000 port: 0 status: management addr: 01c0da000200 port: 0 status: management addr: 0180c2000001 port: 0 status: management addr: 0180c2000002 po...

  • Page 72

    6-14 c hapter 6: f ast e thernet and b ridge m anagement t asks display learned entries in forwarding database displays only the learned entries in the forwarding database for the specified bridge. Each entry is identified by an address. For more information about learned entries in the forwarding d...

  • Page 73

    Display static entries in forwarding database 6-15 display static entries in forwarding database displays only the static entries in the forwarding database for the specified bridge. These entries are either predefined or have been configured via management. For more information about static entries...

  • Page 74

    6-16 c hapter 6: f ast e thernet and b ridge m anagement t asks table 6-22 static table fields name description addr the mac address to which the entry relates. Rcv-p allowed receive (input) port for this address. A zero in this field means that all ports are allowed. Alwd-to allowed output port(s) ...

  • Page 75

    Display static entries in forwarding database 6-17 static addresses allowed-to binary table the allowed-to field specifies where the frames arriving on a given address and bridge port must be forwarded to. This field consists of two nibbles, each of which is a hexadecimal number whose binary value s...

  • Page 76

    6-18 c hapter 6: f ast e thernet and b ridge m anagement t asks example enter: [3] [3] [3] 0 the following is displayed: figure 6-7 static table display ----------------------------------------------------------------------- addr: 0180c2000000 rcv-p: 0 alwd-to: fe00 m-id: stat: read-only addr: 01c0d...

  • Page 77

    Enter or modify a static address in fdb 6-19 enter or modify a static address in fdb add a new static address to the fdb or update an existing one. The static entry is added to the forwarding database or updated with new destinations if it exists. A new entry is given a permanent status. Other statu...

  • Page 78

    6-20 c hapter 6: f ast e thernet and b ridge m anagement t asks example enter: [3] [3] [5] 0 0180c2000000 1 4 in the static forwarding database of bridge #0, the mac address 0180c2000000 is blocked for input bridge-port #1 and output bridge ports #4. Remove a static address from fdb specify a bridge...

  • Page 79

    Display stp enable status 6-21 in the static forwarding database of bridge #0, the mac address 0180c2000000 is removed for input bridge-port #1. Display stp enable status display stp enable status for all bridges. For general information about the stp see “spanning tree protocol” on page 11-8. For m...

  • Page 80

    6-22 c hapter 6: f ast e thernet and b ridge m anagement t asks example enter: [3] [4] [4] 0 d disables the stp on bridge 0 and produces the following message: bridge #0: stp is now disabled. Display bridge stp attributes display all stp attributes for a specified bridge. For general information abo...

  • Page 81

    Display bridge stp attributes 6-23 example enter: [3] [4] [2] [1] 0 the stp attributes for bridge #0 is displayed as follows: figure 6-9 bridge stp attributes display hold-time a fixed bridge parameter specifying the minimum time period elapsing between the transmission of cbpdus through a given bri...

  • Page 82

    6-24 c hapter 6: f ast e thernet and b ridge m anagement t asks update bridge-wide stp parameters update bridge stp parameters: bridge-priority, bridge-max-age, bridge-hello-time, and bridge-forward-delay (see “management bridge parameters” on page 11-8 for more information about the stp parameters)...

  • Page 83

    Update bridge-wide stp parameters 6-25 example enter: [3] [4] [2] [4] 0 2000 the bridge-hello-time for bridge #0 is set to 2000 secs. Update bridge-forward- delay update the stp parameter bridge-forward-delay for a specified bridge. Example enter: [3] [4] [2] [5] 0 1500 the bridge-forward-delay for ...

  • Page 84

    6-26 c hapter 6: f ast e thernet and b ridge m anagement t asks display bridge-port stp attributes display all stp attributes for a specified bridge-port. Example enter: [3] [4] [3] [1] 0 1 table 6-35 task actions menu sequence enter result [3] bridge [4] stp [3] port [1] display 1 bridge number {0-...

  • Page 85

    Disable bridge-port 6-27 the attributes of port #1 of bridge #0 are displayed as follows: figure 6-10 bridge-port stp attributes display. Disable bridge-port disable and enable a bridge-port for a specified bridge for management. Example enter: [3] [4] [3] [4] 0 1 d disables bridge-port 1 on bridge ...

  • Page 86

    6-28 c hapter 6: f ast e thernet and b ridge m anagement t asks example enter: [3] [4] [3] [2] 0 1 128 the bridge-port-priority for port #1 of bridge #0 is set to 128. Update bridge-path-cost update the stp parameter bridge-path-cost for a specified bridge. Example enter: [3] [4] [3] [3] 0 1 100 the...

  • Page 87: Anaging

    7 m anaging atm r esources this chapter contains detailed descriptions of common management tasks for the internal atm port of the 7600 card. Please see “bridges in the 7600 card” on page 12-10 for general background material concerning how the internal atm port connects a bridge to the atm network ...

  • Page 88

    7-2 c hapter 7: m anaging atm r esources display atm port attributes and statistics displays the internal atm port attributes and statistics (refer to table 7-2) example enter: [4] [1] table 7-1 task actions menu sequence enter result [4] atm [1] display none internal atm port attributes and statist...

  • Page 89

    Display bridge atm address 7-3 the following sample atm statistics report is displayed. Figure 7-1 atm statistics report display. Display bridge atm address displays the current atm addresses of the bridges. ------------------------------------------------------------------------------------ atm por...

  • Page 90

    7-4 c hapter 7: m anaging atm r esources example enter: [4] [2] [1] the following is a sample atm address display: figure 7-2 atm address display update bridge atm address enter the bridge number and the atm address (or “!” to invalidate the atm address) to update the local atm address. An atm addre...

  • Page 91

    Display tm configuration 7-5 example enter: [4] [2] [4] 0! Restores the automatic ilmi address registration for bridge #0. Display tm configuration displays the traffic management configuration. Refer to chapter 13 for more information about traffic management in the 7600 card. . Example enter: [4] ...

  • Page 92

    7-6 c hapter 7: m anaging atm r esources figure 7-3 traffic management configuration display enable tm enable traffic management operation. The application of this menu item toggles tm operation on and off. . Example enter: [4] [4] [2] the state of tm is changed from enabled to disabled and vice ver...

  • Page 93

    Display tm clients 7-7 enter: [4] [4] [3] [1] the tm remote client database is displayed as follows: figure 7-4 tm remote client database display table 7-8 characteristics of tm remote client database characteristic range default meaning entry 1-64 index of client in database tm enabled y/n y tm ena...

  • Page 94

    7-8 c hapter 7: m anaging atm r esources add tm client add traffic management client to remote client database. For more information see “display tm clients” on page 7-6. . Example enter: [4] [4] [3] [2] + [respond to prompts] characteristics for the new client in the traffic management remote clien...

  • Page 95

    Update uni version 7-9 . Example enter: [4] [4] [3] [3] 1 entry #1 is removed from the remote client database update uni version choose between working with uni 3.0 and uni 3.1 versions. Example enter: [4] [6] the following screen prompt is displayed. The currently active version is displayed after ...

  • Page 96

    7-10 c hapter 7: m anaging atm r esources atm port is enabled. The following screen message is displayed: context #0 event: atm port link up. Abtthgde.Book page 10 tuesday, june 23, 1998 10:29 am.

  • Page 97: Anaging

    8 m anaging lan e mulation c lients this chapter contains detailed descriptions of common management tasks for the lan emulation client of the 7600 card. For a general discussion of lan emulation, see “lan emulation overview” on page 12-5 and see “bridges in the 7600 card” on page 12-10 for material...

  • Page 98

    8-2 c hapter 8: m anaging lan e mulation c lients q topology-change- flag q expected le_arp response-time q flush-timeout q path-switching- delay q connection- completion-timer manage data-frame parameters q update unknown unicast-flood- mode display lec statistics displays the lan emulation client ...

  • Page 99

    Display lec statistics 8-3 example enter: [5] [1] 0 the following connection state and statistics for the bridge #0 are displayed: in discards all le frames received by the lec, discarded for internal reasons, for example, queues. In errors all le frames received by the lec, discarded due to errors....

  • Page 100

    8-4 c hapter 8: m anaging lan e mulation c lients figure 8-1 lec attributes display display current lec configuration displays the current lec configuration and status, including lecs, les and bus information (refer to table 8-4). For general information about lecs see “lan emulation overview” on pa...

  • Page 101

    Display current lec configuration 8-5 example enter: [5] [2] [1] 0 the following lec configuration and status for the bridge #0 are displayed. Figure 8-2 lec configuration and status display control direct vcc vpi/vci values of the control-direct vcc from the lec to the les. Control distribute vcc v...

  • Page 102

    8-6 c hapter 8: m anaging lan e mulation c lients update lecs address enter the bridge number and atm address (or “!” to invalidate the address) to update the lecs address. For general information about lecs see “lan emulation overview” on page 12-5. Example enter: [5][2][4] 0 4700000009000000000000...

  • Page 103

    Update les address 8-7 update les address enter the bridge number and atm address (or ! To invalidate the address) to update the les address. For general information about lecs see “lan emulation overview” on page 12-5. Example enter: [5][2][4] 0 4700000009000000000000000000c0da60000000 the les addr...

  • Page 104

    8-8 c hapter 8: m anaging lan e mulation c lients display lec operational parameters displays the lec operational parameters for the specified bridge (refer to table 8-10). For more information see “lec parameters” on page 12-16. Table 8-9 task actions menu sequence enter result [5] le [3] operation...

  • Page 105

    Update lec operational parameters 8-9 example enter: [5][3][1] 0 the lec operational information for the lec of bridge #0 is displayed as follows: figure 8-3 lec operational parameters display update lec operational parameters update the lec operational parameters: control-timeout, vcc-timeout-perio...

  • Page 106

    8-10 c hapter 8: m anaging lan e mulation c lients the control-timeout parameter for the lec of bridge #0 is updated to 100 seconds. Vcc-timeout-period enter the bridge number and control-timeout value to update the vcc-timeout-period parameter. Example enter: [5][3][3] 0 20 the vcc-timeout-period p...

  • Page 107

    Update lec operational parameters 8-11 forward-delay-time enter the bridge number and forward-delay-time value to update the lec forward-delay-time parameter. Example enter: [5][3][5] 0 20 the forward-delay-time parameter for the lec of bridge #0 is updated to 20 seconds. Topology-change- flag enter...

  • Page 108

    8-12 c hapter 8: m anaging lan e mulation c lients example enter: [5][3][7] 0 2 the expected le_arp response-time parameter for the lec of bridge #0 is updated to 2 seconds. Flush-timeout enter the bridge number and flush-timeout value to update the lec flush-timeout parameter. Example enter: [5][3]...

  • Page 109

    Update lec operational parameters 8-13 example enter: [5][3][9] 0 5 the path-switching-delay parameter for the lec of bridge #0 is updated to 5 seconds. Connection- completion-timer enter the bridge number and connection-completion-timer value to update the lec connection-completion-timer parameter....

  • Page 110

    8-14 c hapter 8: m anaging lan e mulation c lients display lec control-frame statistics displays the lec control frame statistics for the specified bridge number (refer to table 8-21). For more information see “emulated lan connections” on page 12-7. Table 8-20 task actions menu sequence enter resul...

  • Page 111

    Display lec control-frame statistics 8-15 example enter: [5][4] 0 the lec control frame statistics for the bridge #0 are displayed as follows: not ours (in errors) number of le control frames not intended for the lec received. Not learn (in errors) number of le control frames which were discarded be...

  • Page 112

    8-16 c hapter 8: m anaging lan e mulation c lients -------------------------------------------------------------------- statistics for le client of bridge 0: ===================================== in requests: ------------ arp : 25 narp : 0 topology : 0 flush : 9 in responses: ------------- config : ...

  • Page 113

    Reset lec control-frame statistics 8-17 figure 8-4 lec control frame statistics display. Reset lec control-frame statistics resets the lec control-frame statistics to zero for the specified bridge. For more information see “emulated lan connections” on page 12-7. Example enter: [5][5] 0 the lec cont...

  • Page 114

    8-18 c hapter 8: m anaging lan e mulation c lients no unicast frames are sent to the bus for the specified bridge and the following message is displayed. The le flood mode for bridge #0 is now: notflood abtthgde.Book page 18 tuesday, june 23, 1998 10:29 am.

  • Page 115: Etting

    9 s etting n etwork p arameters this chapter contains detailed descriptions of common management tasks for setting up your 7600 card to work with an snmp manager (for example, transcend atm manager), tftp or telnet (if working through the cellplex 7000 unit). An ip address, subnet mask and default g...

  • Page 116

    9-2 c hapter 9: s etting n etwork p arameters display current ip configuration displays the current ip configuration for each of the bridges (refer to table 9-2). Example enter: [7] [1] [1] the following is displayed: figure 9-1 ip configuration display. Update ip address enter the bridge number and...

  • Page 117

    Update default gateway 9-3 example enter: [7] [1] [4] 0 100.0.2.2 the ip address for bridge #0 is updated to 100.0.2.2 update default gateway enter the bridge number and the new default gateway to update the default gateway for the specified bridge. Example enter: [7] [1] [5] 0 100.0.2.88 the defaul...

  • Page 118

    9-4 c hapter 9: s etting n etwork p arameters update subnet mask enter the bridge number and the new subnet mask to update the subnet mask for the specified bridge. Example enter: [7] [1] [6] 0 255.255.255.0 the subnet mask for bridge #0 is updated to 255.255.255.0 display snmp configuration display...

  • Page 119

    Update nms ip address 9-5 figure 9-2 snmp configuration display. Update nms ip address enter the bridge number and the new nms ip address to update the network management station (nms) ip address, for receiving snmp traps. Example enter: [7] [2] [2] 0 100.0.0.92 the ip address for bridge #0 is updat...

  • Page 120: Anaging

    10 m anaging s ystem f unctions this chapter contains detailed descriptions of common management tasks for the system functions of the 7600 card. The following system functions tasks are covered: manage software and hardware configuration q display software version q display software download status...

  • Page 121

    10-2 c hapter 10: m anaging s ystem f unctions q update write-access password q update admin-access password manage event messages q enable/disable event messages resetting system q reset and reboot display software version displays the current software version, revision number and date of implement...

  • Page 122

    Display software download status 10-3 display software download status display the status of the last tftp software download. Example enter: [1] [9] [1] status of last tftp software download is displayed: download software from network download the software via the network by tftp. Example enter: [1...

  • Page 123

    10-4 c hapter 10: m anaging s ystem f unctions erase software from flash erase the software program from flash prior to downloading of the new system software from a pc or workstation with a vt100 terminal emulation attached directly to the 7600 card through the emergency serial port. The software m...

  • Page 124

    Display hardware configuration 10-5 9 the file will now download. When the download is complete, a prompt appears. Refer to the documentation of your terminal emulation for more information on downloading files. 10 push the switch board back into the cellplex 7000 switch. 11 restore baud rate to 192...

  • Page 125

    10-6 c hapter 10: m anaging s ystem f unctions figure 10-1 hardware configuration display set system configuration mode enter the desired system configuration mode. The default mode is the current system configuration mode. Example enter: [1] [3] [5] -------------------------------------------------...

  • Page 126

    Set store-and- forward mode 10-7 the system configuration mode is set according to following prompt. The current mode is displayed after the colon. To accept it press “enter”; to change it type over the new choice and press “enter”. Select system mode (l): l set store-and- forward mode set the desir...

  • Page 127

    10-8 c hapter 10: m anaging s ystem f unctions display timeout parameters display the software and hardware timeout parameters. Refer to table 10-9 for descriptions of the timeout parameters. Table 10-8 task actions menu sequence enter result [1] system [3] update [8] timeout [1] info none the softw...

  • Page 128

    Display timeout parameters 10-9 example enter: [1] [3] [8] [1] the following is a sample timeout parameters report: empty cell counter the number of free cells in cram. Full queues mask the current status of the queues (12 ethernet, 1 atm, and the software queue). When the bit is set, the queue is f...

  • Page 129

    10-10 c hapter 10: m anaging s ystem f unctions ------------------------------------------------------ timeout recovery process report: -------------------------------- timeout delay : 30 (sw: 30) current time : 31494918 timeout interrupts : 64 false interrupts : 0 events captured : 0 events confirm...

  • Page 130

    Display timeout delays 10-11 figure 10-2 timeout parameters display display timeout delays display the software and hardware timeout delays. Example enter: [1] [3] [8] [2] the following is a sample timeout delays report: ----------------------------------------------------------- hardware timeout de...

  • Page 131

    10-12 c hapter 10: m anaging s ystem f unctions hardware timeout delay has been set. Update software timeout delay enter the new software timeout delay (in seconds) or 0 to disable the software timeout mechanism. Example enter: [1] [3] [8] [4] 10 the software time-delay parameter is updated to 10 se...

  • Page 132

    Update read-access password 10-13 update read-access password update the read-access password. Type the new password a second time to confirm your entry. Example enter: [1] [6] [1] the following dialog is displayed. Note that the passwords themselves are not displayed. Enter the new read password: m...

  • Page 133

    10-14 c hapter 10: m anaging s ystem f unctions enter the new write password: mywritepassw enter the new write password again: mywritepassw the password has been changed the write-access password is updated. Update admin-access password update the admin-access password. Type the new password a secon...

  • Page 134

    Reset and reboot 10-15 example when administration console event messages are disabled enter: [1] [7] administration console event messages are enabled. Reset and reboot reset system hardware and reboot the device for the new system settings to take effect. Example enter: [1] [8] this will reset and...

  • Page 135: III

    Iii chapter 11 ethernet lans and bridges in the 7600 card chapter 12 atm, lan emulation, and virtual lans chapter 13 traffic management in the atm network chapter 14 device management chapter 15 system modes, attributes, and tuning 7600 card capabilities abtthgde.Book page 17 tuesday, june 23, 1998 ...

  • Page 136: Thernet

    11 e thernet lan s and b ridges in the 7600 c ard this chapter provides basic concepts and information about the following topics and how they are implemented in the 7600 card. Q overview of ethernet q fast ethernet q transparent bridges q spanning tree protocol q bridged-lan environments and vlans ...

  • Page 137

    11-2 c hapter 11: e thernet lan s and b ridges in the 7600 c ard figure 11-1 ethernet lan (ethernet segment) fast ethernet fast ethernet is a new lan technology that uses the same csma/cd transmission method as the basic 10 mbps ethernet lan described in the previous section but all timing parameter...

  • Page 138

    Fast ethernet 11-3 q 10/100 mbps transmission speed these capabilities differ between the tx and fx port types. They are presented in the following table and discussed in the paragraphs below. Auto-negotiation the 7600 card has the capability of negotiating with the device with which it is to commun...

  • Page 139

    11-4 c hapter 11: e thernet lan s and b ridges in the 7600 c ard 10 or 100 mbps speed the 7600 card can communicate with either a 10 mbps or in a 100 mbps communication rate. This capability is available for the tx port type only. The fx ports communicate in 100 mbps only. The tx ports also have a s...

  • Page 140

    Fast ethernet ports 11-5 fast ethernet ports ethernet lans (ethernet segments) are physically connected to the 7600 card through one of its 16 fast ethernet ports. Each port has a unique address and port number. Figure 11-2 below shows ethernet lans connected to the 7600 card ethernet ports. Figure ...

  • Page 141

    11-6 c hapter 11: e thernet lan s and b ridges in the 7600 c ard transparent bridges the transparent bridge is a device that connects to two or more lans and provides a selective data packet transfer capability between them which allows them to work in a bridged-lan environment. The bridged-lan can ...

  • Page 142

    Transparent bridges 11-7 forwarding database the effective bandwidth of the bridged lan can be increased by means of the forwarding database (fdb), a memory cache in the bridge which contains a table of station addresses and associated bridge port numbers. The fdb provides the bridge port number of ...

  • Page 143

    11-8 c hapter 11: e thernet lan s and b ridges in the 7600 c ard static addresses the network manager may want to restrict a particular station to communicate only through specific input and output bridge ports in order to keep its traffic confined to certain portions of the network topology. Or, he...

  • Page 144

    Spanning tree protocol 11-9 transparent bridges the bridged lan can contain paths on which packets may loop and multiply, lowering its effective overall bandwidth. Figure 11-4 packet looping through redundant bridges to solve this problem, the ieee 802.1d bridging standard describes the spanning tre...

  • Page 145

    11-10 c hapter 11: e thernet lan s and b ridges in the 7600 c ard designated bridge on a lan among all bridges on a lan, the bridge with the shortest path to the root bridge (through its root port) is selected as the designated-bridge on that lan. Spanning tree port selection each bridge selects its...

  • Page 146

    Bridged-lan environments in the 7600 card 11-11 management bridge parameters the following bridge parameters can be set by management. The parameters listed in table 11-3, are port-independent while the parameters in table 11-4 are set for individual bridge ports. Bridged-lan environment s in the 76...

  • Page 147

    11-12 c hapter 11: e thernet lan s and b ridges in the 7600 c ard local bridged-lan environment for the purpose of forming bridged-lan environments, the 7600 card provides up to 16 internal bridges that can be configured by management. On setup, one bridge is allocated to each bridged-lan environmen...

  • Page 148: Atm, Lan E

    12 atm, lan e mulation , and v irtual lan s this chapter provides basic concepts and information about: q atm overview q virtual channels q interim local management interface (ilmi) q lan emulation overview q emulated lan components q emulated lan connections q bridges in the 7600 card q data transm...

  • Page 149

    12-2 c hapter 12: atm, lan e mulation , and v irtual lan s atm basics cell switching atm uses short, fixed length packets called cells. The first five bytes of each cell, the header, contain the information necessary to deliver the cell to its destination. Fixed-length cells offer the following adva...

  • Page 150

    Virtual channels 12-3 virtual channels atm is a connection-oriented transport service, much like a telephone. As opposed to ethernet, where data is sent out on a common bus, atm requires that a virtual channel connecting the source station to the destination station be established before data transm...

  • Page 151

    12-4 c hapter 12: atm, lan e mulation , and v irtual lan s q point-to-point and point-to-multipoint connections switched virtual channels svc connections are defined dynamically as they are needed and released when not needed, using signalling as per atm forum uni standards. By using svc, atm device...

  • Page 152

    Lan emulation overview 12-5 q physical layer q atm layer q atm layer statistics q virtual path connections (vpc) q virtual channel connections (vcc) q address registration information q service registry table atm address registration in order to establish an atm connection at the uni, both the user ...

  • Page 153

    12-6 c hapter 12: atm, lan e mulation , and v irtual lan s le service normally resides on a central atm switch, such as the cellplex 7000, but may reside on an atm end station instead. An elan is assigned a name (elan name) which is communicated to each lec as the lec joins the elan. More than one e...

  • Page 154

    Emulated lan connections 12-7 q unknown traffic all broadcast, multicast and unknown traffic to and from a lec passes through a single bus. The bus also handles atm connections and manages its distribution group. Lan emulation configuration server (lecs) the lecs assigns individual lan emulation cli...

  • Page 155

    12-8 c hapter 12: atm, lan e mulation , and v irtual lan s lec control frame statistics display the operator can display statistics on the various types of control frames in and out of the lec (see “display lec control-frame statistics” on page 8-14) data vccs data vccs carry data frames between lec...

  • Page 156

    Emulated lan connections 12-9 figure 12-1 vccs in lan emulation components lec configuration and status information the following information about the configuration of the bridge lec in the elan to which it belongs including connections to lecs, les and bus can be displayed to the operator (see “di...

  • Page 157

    12-10 c hapter 12: atm, lan e mulation , and v irtual lan s bridges in the 7600 card in the 7600 card a lec is attached to each ethernet transparent bridge which is set up in the device. The lec connects the bridged-lan environment attached to the transparent bridge to the atm network and forwards l...

  • Page 158

    Bridges in the 7600 card 12-11 figure 12-2 bridges in the 7600 card the following figure shows data-direct vccs configured between two 7600 cards: figure 12-3 virtual circuit connections cell switching in the bridge in fact, both ethernet and atm switching in the bridge are combined in a single asic...

  • Page 159

    12-12 c hapter 12: atm, lan e mulation , and v irtual lan s bridge forwarding database in order to forward data frames efficiently to both local lan stations on the transparent bridge as well as to remote lan stations represented by other lecs on the atm network, a combined forwarding database (fdb)...

  • Page 160

    Bridges in the 7600 card 12-13 data-direct vcc on receipt of the destination lec address, the transmitting lec establishes a data-direct vcc for direct communication across the atm network to the destination lec if one does not already exist (the 7600 card actually inserts a pointer to this vcc dire...

  • Page 161

    12-14 c hapter 12: atm, lan e mulation , and v irtual lan s aging in the le_arp cache as in the transparent bridge fdb, inactive entries in the le_arp cache are removed (aged out). Two lec parameters are employed for this purpose: aging-time and forward-delay-time. The parameter used depends on the ...

  • Page 162

    Data transmission over an elan 12-15 data transmission over an elan unicast frames when a lec has established through address resolution that a certain lan destination corresponds to a certain lec atm address, and a data-direct vcc exists to that atm address, then a data frame addressed to that lan ...

  • Page 163

    12-16 c hapter 12: atm, lan e mulation , and v irtual lan s flush protocol according to the previous section, a unicast frame can be sent to a destination lec over two vcc paths: a data-direct vcc or a multicast-send vcc via the bus. Since a frame transmitted over a data-direct vcc may arrive sooner...

  • Page 164

    Virtual lans overview 12-17 virtual lans overview virtual lans (vlans) represent location-independent logical user groups. Lan emulation allows you to create enterprise-wide vlans that closely correspond to how your network and business actually function. The vcc-timeout an lec should release any da...

  • Page 165

    12-18 c hapter 12: atm, lan e mulation , and v irtual lan s ability to define multiple emulated lans permits the network manager to create several bridged lan domains within a single atm network. Vlans create secure workgroups, erect firewalls against broadcast storms and allow networks to be reconf...

  • Page 166

    Virtual lans in the 7600 card 12-19 a virtual lan. The lan stations communicate over the vccs set up by the elan. Figure 12-4 shows how two such vlans, for example engineering and finance, might be connected on the atm network. Each vlan has a separate elan (elan 1 and elan 2) which establish the da...

  • Page 167

    12-20 c hapter 12: atm, lan e mulation , and v irtual lan s figure 12-4 vlan connectivity through 7600 cards the following figure shows a different way of viewing the relation between elan and vlan. The elan is embedded in the vlan. Abtthgde.Book page 20 tuesday, june 23, 1998 10:29 am.

  • Page 168

    Virtual lans in the 7600 card 12-21 figure 12-5 elan in a virtual lan virtual lans for three workgroups figure 12-6 shows the physical and virtual view of a network divided into three vlans: marketing, finance. And administration. Even though these workgroups are distributed over different floors, l...

  • Page 169

    12-22 c hapter 12: atm, lan e mulation , and v irtual lan s figure 12-6 logical and physical view of a network with vlans abtthgde.Book page 22 tuesday, june 23, 1998 10:29 am.

  • Page 170: Raffic

    13 t raffic m anagement in the atm n etwork this chapter discusses the traffic management (tm) function within the atm network and its implementation in the 7600 card. The following topics are discussed: q overview of the concepts and operation of traffic management q how traffic management is imple...

  • Page 171

    13-2 c hapter 13: t raffic m anagement in the atm n etwork transfer delay. The abr service does not require bounding the delay or the delay variation experienced by a given connection. The ubr service category is inherently open-loop. Ubr is not subject to a specific traffic contract but may be subj...

  • Page 172

    Traffic management concepts 13-3 q directly insert feedback control information into rm-cells when they pass in the forward or backward direction q indirectly inform the source about congestion by setting the efci bit in the data cell header of the cells of the forward information flow. In this case...

  • Page 173

    13-4 c hapter 13: t raffic m anagement in the atm n etwork the sending rate is reduced. When the source end station receives a backward rm cell with the ci bit cleared it may increase the sending rate on that particular vc. Explicit rate control explicit rate control enhances the implicit rate contr...

  • Page 174

    Traffic rates shaping in the 7600 card 13-5 q traffic shaping is a mechanism that alters the traffic characteristics of a stream of cells on a vcc or a vpc to achieve a desired modification of those traffic characteristics. The vbr quality of service class makes use of traffic shaping. Q efci is a c...

  • Page 175

    13-6 c hapter 13: t raffic m anagement in the atm n etwork flow rate adjustment traffic management in the 7600 card operates with both efci based and explicit rate (er) based flow control methods. Transmission rate profiles the data transmission rate is controlled by means of rate tables called prof...

  • Page 176

    Traffic management in the network 13-7 traffic management in the network figure 13-2 below shows a network scenario, where two 7600 cards, denoted by source station and destination station are found with an atm cloud between them. The shaded area between the stations represents a vcc connection over...

  • Page 177: Evice

    14 d evice m anagement this chapter explains the applications enabling administrative and management functions in the 7600 card. The following topics are discussed: q the user interfaces and protocols used q management types and connection q management within the 7600 card user interfaces and protoc...

  • Page 178

    14-2 c hapter 14: d evice m anagement figure 14-1 user interfaces and protocols used to access the 7600 card in-band & out-of-band management configuration of the 7600 card can be performed via an administration console or an snmp-based external network management application running on a workstatio...

  • Page 179

    7600 card management 14-3 if there is a dedicated network for management data, then the network is being managed out-of-band. The advantage of using out-of-band management as opposed to in-band management is that if the data network is faulty, the problem can still be diagnosed because the managemen...

  • Page 180

    14-4 c hapter 14: d evice m anagement figure 14-2 7600 card administration console even if you wish to use snmp management, you must first connect a terminal to the serial port, set the vn/bridge configuration, and per bridge ip address and subnet mask. Simple network management protocol (snmp) simp...

  • Page 181

    7600 card management 14-5 figure 14-3 transcend enterprise manager (snmp manager) access to the snmp agent is in-band via any of the ethernet segments or atm port of remote stations. Management of all remote 7600 units is supported by the snmp agent, regardless of virtual lan membership. Since the 7...

  • Page 182

    14-6 c hapter 14: d evice m anagement figure 14-4 snmp manager protocol access management information bases (mibs) managed objects are accessed via a virtual information store, termed the management information base (mib). Information defined in industry-standard, de-facto standard, and enterprise-s...

  • Page 183

    7600 card management 14-7 security snmp security is provided through community strings. A community string is included in each snmp protocol message sent between external management applications and the 7600 card. The default community strings are: access unit agent - q read : ‘public au’ q write : ...

  • Page 184

    14-8 c hapter 14: d evice m anagement figure 14-5 local management protocol access abtthgde.Book page 8 tuesday, june 23, 1998 10:29 am.

  • Page 185: Ystem

    15 s ystem m odes , a ttributes , and t uning this chapter explains the administrative and management functions in the 7600 card including system modes, attributes and tuning. Forwarding modes data frames received from the fast ethernet ports pass through the zipchip asic and are stored in the share...

  • Page 186

    15-2 c hapter 15: s ystem m odes , a ttributes , and t uning cut-through mode cut-through mode enables a frame to be forwarded to a destination address even before the entire frame has been received. You can configure the required number of cells to be received before transmission starts. Refer to f...

  • Page 187

    Console passwords 15-3 console passwords the administration console requires passwords at the various access levels: read, write and admin. Admin access is required to change any of the passwords. Abtthgde.Book page 3 tuesday, june 23, 1998 10:29 am.

  • Page 188: Technical Support

    A technical support 3com provides easy access to technical support information through a variety of on-line and telephone services. This appendix describes these services. On-line technical services 3com offers worldwide product support seven days a week, 24 hours a day, through the following on-lin...

  • Page 189

    A-2 a ppendix a: t echnical s upport ask3com on compuserve ask3com is a compuserve-based service containing patches, software, drivers, and technical articles about all 3com products, as well as an interactive forum for technical questions. To use ask3com, you need a compuserve account. To use ask3c...

  • Page 190

    Telephone support a-3 support from 3com if you are unable to receive support from your network supplier, technical support contracts are available from 3com. In the u.S. And canada, call (800) 876-3266 for customer service. If you are outside the u.S. And canada, contact your local 3com sales office...

  • Page 191

    A-4 a ppendix a: t echnical s upport if you are unable to contact your network supplier, refer to table a-4 on how to contact 3com. Returning products for repair a product sent directly to 3com for repair must first be assigned a return materials authorization (rma) number. A product sent to 3com wi...

  • Page 192: Roubleshooting

    B t roubleshooting this chapter explains how to identify and correct problems, and how to perform related diagnostic tasks, such as replacing fuses and cleaning fiber optic cables. If you have problems that are not addressed in this chapter, contact 3com technical support or your service person. For...

  • Page 193

    B-2 a ppendix b: t roubleshooting the cabling and connections at the port. Try sending the data through another port: if you can forward data through the unit via another port, it indicates a local problem with the first port. Re-examine cabling connections. If you still cannot resolve the problem, ...

  • Page 194

    Related diagnostic procedures b-3 avoid touching all surfaces after cleaning the connectors, and keep all unused ports covered. Ne toucher aucune surface après le nettoyage des connecteurs et garder les pièces inutilisées couvertes. Vermeiden sie das berühren aller oberflächen nach dem säubern der k...

  • Page 195: 7600 F

    C 7600 f ast e thernet c ard s pecifications this chapter contains the specifications of the 7600 card. Physical interfaces q fast ethernet 8 or 16 100base-fx or 100base-tx ports q management 1 rs-232 port on cellplex 7000 switch fast ethernet switching q auto-sensing full duplex/half duplex q softw...

  • Page 196

    C-2 a ppendix c: 7600 f ast e thernet c ard s pecifications q lan emulation client (lec) support q local management via the cellplex 7000’s rs-232 port q congestion management q mibs supported: mib2, bridge mib, atom mib, lec mib, rmon mib, interface evolution mib, ncdchass mib (private) environment...

  • Page 197

    Standards compliance c-3 standards compliance safety q agency certifications: ul 1950, csa 22.2 no. 1950, en 60950, iec 825-1 825-2, pcb ul 94v-0, pcb ansi/ipc-rb-276 class 2 q designed to comply with vde 0871 part 2 class a, en 55022 q ac protection20 amp circuit breaker electromagnetic emissions (...

  • Page 198: Lossary

    G lossary 7600 card a 36-port atm/ethernet interface card in the cellplex 7000 chassis. Asynchronous transfer mode (atm) a transfer method used for lan and wan. Atm carries voice, video, and data at speeds up to 2.2 gbps and can integrate geographically distant disparate networks. Also called cell r...

  • Page 199

    2 g lossary cell an atm layer protocol data unit (pdu) characterized by fixed, rather than variable, length payloads. The standard atm cell is 48 bytes of payload with 5 bytes of header. Cellplex 7000 switch a high-performance, modular atm switch. Cell loss priority (clp) a bit in the atm cell heade...

  • Page 200

    G lossary 3 in-band transmission of auxiliary information, e.G., management messages over the media also used by the system users. Internet protocol (ip) the protocol governing packet forwarding within the transmission control protocol/internet protocol (tcp/ip) suite of standards developed and used...

  • Page 201

    4 g lossary out-of-band transmission of auxiliary information e.G., management messages, over a media other than that used by the system users. Point-to-point call a two-way call or connection that has one source and one destination. Point-to-multipoint call a one-way call or connection that has onl...

  • Page 202

    G lossary 5 user network interface (uni) the uni interconnects an atm user with an atm switch. Wide area network (wan) data communications network spanning very large geographical areas. Abtthgde.Book page 5 tuesday, june 23, 1998 10:29 am.

  • Page 203: Ndex

    I ndex 1 i ndex numbers 100base-fx 2-5 100base-fx port 1-1 100base-tx 2-5 100base-tx port 1-1 3com bulletin board service a-1 3comfacts automated fax service a-2 7600 card bridge setup 12-18 7600 fast ethernet interface card about this guide 1 functional overview 1-1 a aal5 layer octets 7-2 unicast ...

  • Page 204

    2 i ndex forwarding database 6-12, 6-14 frame traffic statistics 6-10 frames 6-10 mapping to ethernet ports 6-8 number 6-9 stp attributes 6-26 bridged-lan environments 11-12 broadcast and unknown server, see bus broadcast attributes display 6-5 updating 6-6 broadcast throttling disabling 6-6 bulleti...

  • Page 205

    I ndex 3 lec control-frame statistics 8-14 lec operational parameters 8-8 lec statistics 8-2 main menu 4-1 snmp configuration 9-4 software download status 10-3 software time-out parameters 10-8 software version 10-2 stp attributes for bridge port 6-26 stp enable status 6-21 time-out delays 10-11 tra...

  • Page 206

    4 i ndex frame traffic statistics 6-10 front panel with physical modules 1-1 functional overview 1-1 g guide scope 1 typographical conventions 2 h hardware configuration 10-5 hardware time-out delay 10-11, 15-2 update 10-11 hardware time-out parameters 10-8 how to read documentation 2 humidity opera...

  • Page 207

    I ndex 5 populating 12-6 link status 2-9 lm security 14-7 local management terminal 2-6 local management, see lm locating information in documents 3 m mac address 6-3, 12-13 ethernet ports 6-3 forwarding database 6-12, 6-14, 6-16 management configuration 3-10 in-band 14-2 out-of-band 14-2 specificat...

  • Page 208

    6 i ndex road map of documentation 3 s safety precautions 2-1 safety standards c-3 sc connector 1-3 scope of this guide 1 security snmp 14-7 selective cell discarding 13-4 serial port settings 2-6 server farm 1-7 setup full 3-2 integrated 3-2 multi-context 3-10 switch 3-2 simple network management p...

  • Page 209

    I ndex 7 telnet 14-1 temperature operating c-2 storage c-2 tftp software download 10-3 time-out display 10-11 time-out tuning 15-2 traffic management 13-3 connection admission control 13-4 control cells 13-1 display clients 7-6 display configuration 7-5 enabling 7-6 explicit forward congestion indic...

  • Page 210

    8 i ndex overview 12-17 virtual lans, see vlans virtual path connection see vpc virtual path identifier, see vpi 12-3 virtual terminal protocols 14-1, 14-7 vpc 12-3 z zipchip asic 7600 card 12-11 abtthgde.Book page 8 tuesday, june 23, 1998 10:29 am.