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3Com 7600 User Manual

3Com 7600 User Manual

Fast ethernet card
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Part No. DUA7600-0AAA01
Published November 1997
7600 Fast Ethernet Card

User Guide

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Summary of Contents for 3Com 7600

  • Page 1: User Guide

    7600 Fast Ethernet Card ® User Guide http://www.3com.com/ Part No. DUA7600-0AAA01 Published November 1997...
  • Page 2 Santa Clara, California 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 permission from 3Com Corporation.

  • Page 3: Table Of Contents

    7600 Card Capabilities 7600 Card Benefits Ethernet-switching Features Virtual LANs Traffic Management Device Management Typical Applications of the 7600 Card Fast Ethernet Backbone Server Farm NSTALLATION AND OWER Safety Precautions Mesures de sécurité Vorsichtsmaßnahmen Installing and Removing the 7600 Card Modules...
  • Page 4 Installing the 7600 Card Module Removing the 7600 Card Module Installing a Fast Ethernet Physical Module Connecting to Network Devices Connecting to a Local Management Terminal 7600 Card System States System States and LEDs Power-Up Power-on Self-Test Normal operation Fast Ethernet Status Indicators...
  • Page 5 ONFIGURING IRTUAL Display Current Bridge Configuration Attach Fast Ethernet Port to Bridge Attach Internal ATM Port to Bridge THERNET AND RIDGE ANAGEMENT ASKS Fast Ethernet Port Attributes and Statistics Disable a Fast Ethernet Port Display Broadcast Throttling Attributes Update Broadcast Threshold Enable/Disable Broadcast Throttling Update Fast Ethernet Port Bridge Attributes and Statistics...
  • Page 6 ATM R ANAGING ESOURCES Display ATM Port Attributes and Statistics Display Bridge ATM address Update Bridge ATM Address Display TM Configuration Enable TM Display TM Clients Add TM Client Remove TM Client Update UNI Version Enable/Disable ATM Port Admin Status LAN E ANAGING MULATION...
  • Page 7 10-12 Update Read-access Password 10-13 Update Write-access Password 10-13 Update Admin-access Password 10-14 Enable/Disable Event Messages 10-14 Reset and Reboot 10-15 7600 C THERNET S AND RIDGES IN THE Overview of Ethernet 11-1 Fast Ethernet 11-2 Capabilities 11-2 Cabling 11-4...
  • Page 8 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 Environments in the 7600 Card 11-11 Local Bridged-LAN Environment 11-12 Connection to the ATM Network 11-12 ATM, LAN E MULATION IRTUAL...
  • Page 9 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...
  • Page 10 EVICE 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 YSTEM ODES TTRIBUTES UNING Forwarding Modes 15-1 Timeout Tuning 15-2...
  • Page 11 Environmental Indicators Management Standards Compliance Safety Electromagnetic Emissions (Agency Certifications) Communications Protocols Management Protocols LOSSARY...

  • Page 12: About This Guide

    BOUT 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 guide, follow the Release Notes.

  • Page 13: Conventions

    Used for sample displays to show what appears on your terminal Courier screen. Related Manuals Table 3 lists the 7600 Card documentation set and other related manuals. Table 3 7600 Card Documentation and Related Manuals Manual Name 3COM Part No.

  • Page 14: Documentation Road Map

    Related Manuals Table 3 7600 Card Documentation and Related Manuals (continued) Manual Name 3COM Part No. Transcend Enterprise Manager, ATM and VLAN DUA2785-0NAA03 Management Documentation Road The Documentation Road Map in Table 4 helps you locate specific information in the 7600 Card documentation set.

  • Page 15: Overview Of The 7600 Card

    Fast Ethernet ports on the base card are numbered 1 to 8, left to right; Fast Ethernet ports on the upper layer physical modules are numbered 9 to 16, left to right. Figure 1-1 shows the front panel of the 7600 Card with the maximum number of Fast Ethernet physical modules installed.
  • Page 16 1: O 7600 C HAPTER VERVIEW OF THE 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)

  • Page 17: Connectors

    LEDs at the left side of the front panel indicate the operational status of the 7600 Card and each of the Fast Ethernet ports. 7600 Card The 7600 Card, an integrated 16-port Fast Ethernet card, is part of a Capabilities series of Ethernet interface cards developed for the CELLplex 7000 ATM...

  • Page 18: 7600 Card Benefits

    Interface Evolution MIB, NCDCHASS MIB (private) Virtual LANs Virtual LANs are Ethernet segments grouped together to form a common broadcast domain across the enterprise. Using the 7600 Card, you can establish Virtual LANs using ATM and LAN Emulation. Segments in a...

  • Page 19: Traffic Management

    For more information see “Connecting to a Local Management Terminal” on page 2-6 and Chapter 14. Typical Applications The 7600 Card can be used to advantage in many different locations and of the 7600 Card configurations. See the following two examples:...
  • Page 20 1: O 7600 C HAPTER VERVIEW OF THE Figure 1-5 Fast Ethernet backbone...

  • Page 21: Server Farm

    Typical Applications of the 7600 Card 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 different floors.
  • Page 22 TARTING Chapter 2 Installation and Power-up Chapter 3 Fast Setup...

  • Page 23: Installation And Power - Up

    NSTALLATION AND OWER 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:...

  • Page 24: Mesures De Sécurité

    2: I HAPTER NSTALLATION AND OWER 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

    Vorsichtsmaßnahmen Vorsichtsmaßnahm 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 Handgelenk, daß gut geerdet ist. Das hilft vermeiden, daß das Ersatzteil durch elektrostatische Entladung beschädigt wird.

  • Page 26: Installing And Removing The 7600 Card Modules

    1 Pull the ejector tabs on each side of the front panel to their outermost position and orient the 7600 Card in front of the selected slot of the CELLplex 7000. 2 Place the module between the runners of the selected slot and slide it into the CELLplex 7000 chassis until it reaches the backplane and can go no further.

  • Page 27: Installing A Fast Ethernet Physical Module

    1 in Figure 2-1). Figure 2-1 Installing a Fast Ethernet physical module 4 Lower the card on to the spacers located on the 7600 Card, making sure that the screws on the physical module fit into the spacers. (See 2 in Figure 2-1).

  • Page 28: Connecting To A Local Management Terminal

    MDI and use a straight-through cable. Connecting to a The following section describes the physical connection of the 7600 Card Local Management to a local terminal via the CELLplex 7000 switch.

  • Page 29: 7600 Card System States

    States how they are indicated on the LED display. System States and The following Table 2-2 lists the system states of the 7600 Card module LEDs in the first column. The state in which the 7600 Card is currently operating is displayed by the system status LEDs. Referring to Figure 2-2, these are the three LEDs: P(ower), F(ail), and A(ctive) under the label “SYS”...

  • Page 30: Power-Up

    Normal operation After completion of the Power-on Test, the 7600 begins normal operation automatically. The LEDs continue to display the system status of the 7600 Card module as well as the individual data connections of each Fast Ethernet LED display.
  • Page 31 Normal operation 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 connected.

  • Page 32: Fast Setup

    7600 Card and its attached devices to function as a networked whole. There are two ways to perform a “Fast Setup” that will enable the 7600 Card to begin functioning almost immediately: Performing the Integrated Fast Setup procedure of the host CELLplex 7000, which configures all its interface cards in one session.

  • Page 33: Cellplex 7000 Integrated Fast Setup

    3: F HAPTER ETUP CELLplex 7000 The CELLplex 7000 Switch local management software features an Integrated Fast Integrated Fast Setup procedure which configures both the Switch and all Setup Interface Cards installed in it in one continuous dialog. The Integrated Fast Setup procedure is based on a concept in which the Box-oriented setup CELLplex 7000 Switch together with its installed interface cards is viewed as an integrated unit or box.
  • Page 34 CELLplex 7000 Integrated Fast Setup 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.

  • Page 35: Setup Procedure Sections

    3: F HAPTER ETUP Setup Procedure The Integrated Fast Setup consists of the following steps or sections: Sections Table 3-1 Integrated Fast Setup Procedure Sections Setup Section Description Network Prefix See CELLplex 7000 Manual. LE Parameters See CELLplex 7000 Manual. LECS Address See CELLplex 7000 Manual.

  • Page 36: Integrated Fast Setup Operation

    CELLplex 7000 Integrated Fast Setup Integrated Fast Setup The Integrated Fast Setup is initiated from the LMA Main Menu of the Operation CELLplex 7000 The CELLplex Main Menu appears as follows: CP7000 switch module - Main Menu: (1) SYS: Platform config -> (2) LEM: Lan Emulation ->...

  • Page 37: Example Dialog

    3: F HAPTER ETUP Example Dialog The following dialog appears on the screen: 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<witch>, F<ull>): F ***Note: Full fast setup, special module configuration will be overridden.
  • Page 38 CELLplex 7000 Integrated Fast Setup LE Parameters Section LE parameters =------------ Resident LECS state (1-Enable, 0-Disable): 0 LES state (1-Enable, 0-Disable): 0 LECS Address Section LECS Address --=--------- Active LECS addr - net prefix: 47.00.00.00.00.00.3c.00.00.a* Active LECS addr - user part: 00.a0.3e.00.00.01.00 UNI/NNI Parameters Section UNI/NNI parameters =-----------------...
  • Page 39 3: F HAPTER ETUP LE Client Configuration Section LE Client Configuration -=--------------------- *** Hit Enter after VN #7 for end of potential ELAN names list. VN #1 ELAN Name: admin < Admin VN > VN #2 ELAN Name: finance VN #3 ELAN Name: engineering VN #4 ELAN Name: engineering2 VN #5 ELAN Name: marketing VN #6 ELAN Name: sales...
  • Page 40 CELLplex 7000 Integrated Fast Setup Admin VN Management Configuration 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 Subnet Mask: 255.255.255.0 Confirmation Dialog Section Accept Changes =------------- *** Note: Change of some parameters will take affect now!! Save changes (Y/N)? Y Are you sure (Y/N)? y Saving NMS parameters...

  • Page 41: Multi-Context Fast Setup

    Setup 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 contexts. These are displayed in the following table: Table 3-3 Port Context...

  • Page 42: Editing Guidelines

    3-11 subnet masks, can be assigned to each logical bridge defined in the Virtual Network Configuration. 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 Setup values:...

  • Page 43: Multi-Context Setup Operation

    From the CELLplex 7000 Main Menu enter where <slot #> is = <slot #> Operation the number of the slot in which the 7600 Card is installed. The 7600 Card admin Main Menu appears as in the following example: Context #0 - main menu: ========== [1] system - Administer System level functions ->...
  • Page 44 Multi-context Fast Setup 3-13 Virtual Network Configuration Section Virtual Network Configuration ----------------------------- Fast Ethernet port #1 belongs to Bridge No.(0-3): 0 <Admin VN> Fast Ethernet port #2 belongs to Bridge No.(0-3): 0 Fast Ethernet port #3 belongs to Bridge No.(0-3): 1 Bridge #0 ATM connection (Y/N)? Y <Admin VN>...
  • Page 45 3-14 3: F HAPTER ETUP System Mode Configuration Section System Mode Configuration ------------------------- Enter system mode (L<E>): L The new configuration is displayed for this context. Confirmation Dialog Section Accept Changes (if changes have been made) -------------- Save changes (Y/N)? Y This will apply the changes and reset the affected bridges only! Are you sure (Y/N)? At this point you are asked if you want to enter Fast Setup for contexts 1,...
  • Page 46 7600 C ANAGEMENT ASKS 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...

  • Page 47: Local Management Basics

    OCAL ANAGEMENT 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.

  • Page 48: Main Menu

    “<slot #>” is the number of the slot in which = <slot #> the 7600 Card is installed. Figure 4-2 shows the Main menu. 7600 Card in slot # 2 Context #0 - main menu: ========== [1] system - Administer System level functions ->...

  • Page 49: Selecting Menu Options

    Menu Hierarchy Port Context For the purpose of management, the 16 Fast Ethernet ports of the 7600 Card are divided into four contexts as follows: Table 4-1 Port Context Contex Contex Contex Contex The management menus and commands focus on one context at a time.

  • Page 50: Direct Access To Submenus

    4: L HAPTER OCAL ANAGEMENT ASICS Entry of the stp submenu’s option produces the prompt: (3)bridge\(4)stp\(3)port>. Finally, entering finalizes the prompt as: (3)bridge\(4)stp\(3)port\(1)display>> Direct Access to To select an embedded sub-menu or settings-option several levels deep in Submenus your current menu without having to step down through the sub-menus, type all the intervening menu numbers or initial characters with blanks in between.
  • Page 51 Menu Hierarchy 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 of the command line. Context n (0-3) Another module n=0: Switch module n=1-4: Interface Card module 1-4...

  • Page 52: Menu Index

    4: L HAPTER OCAL ANAGEMENT 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 .
  • Page 53 Menu Index ....[3] state ......6-6 .
  • Page 54 4: L HAPTER OCAL ANAGEMENT ASICS ..[3] vcc ..[4] tm ... . . [1] display ....7-5 .
  • Page 55 Menu Index Virtual LAN Menu [6] vns ......5-1 ..[1] display .

  • Page 56: Configuring Virtual Lan

    IRTUAL 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 Card.

  • Page 57: Attach Fast Ethernet Port To Bridge

    Ethernet Port to Ethernet port to the bridge. The initial default configuration is a single Bridge bridge that includes all Fast Ethernet ports and an ATM connection. For general information about bridges see “Bridges in the 7600 Card” on page 12-10.

  • Page 58: Attach Internal Atm Port To Bridge

    The initial default configuration is a single bridge that includes all Fast Ethernet ports and an ATM connection. For general information about bridges see “Bridges in the 7600 Card” on page 12-10. The ATM port in context #1 must always be attached to bridge #0.

  • Page 59: Fast Ethernet And Bridge Management Tasks

    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 following tasks are...

  • Page 60: Fast Ethernet Port Attributes And Statistics

    6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Managing the Spanning Tree Protocol - Bridge-wide Display STP Enable Status Disable STP on Bridge Display Bridge STP Attributes Update Bridge-wide STP Parameters Update Bridge-priority Update Bridge-max-age Update Bridge-hello-time Update Bridge-forward- delay Managing the Spanning Tree Protocol - per Bridge-port Display Bridge-port STP Attributes Disable Bridge-port...
  • Page 61 Fast Ethernet Port Attributes and Statistics Table 6-2 Ethernet Port Attributes Name Description MAC Address The MAC address uniquely identifying the Ethernet port. Admin Status The Port administrative status. Up: Port is enabled by management Down: Port is disabled by management Oper Status The Port operational status.
  • Page 62 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Table 6-4 Ethernet Port Statistics (continued) Name Description In Unknown All frames received on the port and discarded due to unknown protocols. Out Octets All octets transmitted out of the port. Out Ucast Unicast frames transmitted out of the port including discards.

  • Page 63: Disable A Fast Ethernet Port

    Disable a Fast Ethernet Port Disable a Fast Disable or enable the Admin status of a Fast Ethernet port (see “Fast Ethernet Port Ethernet Ports” on page 11-5 for general information about Ethernet ports). Table 6-5 Task Actions Menu Sequence Enter Result [2] ethernet...

  • Page 64: Update Broadcast Threshold

    6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Table 6-7 Broadcast Throttling Attributes (continued) Name Description Enable status Broadcast throttling enabled/disabled for this port. Example Enter: [2] [3] [1] The following is displayed: ---------------------------------------------------------------------- Port #1: high threshold low threshold 300 Enabled Port #2: high threshold low threshold 300...

  • Page 65: Update Fast Ethernet Port

    Update Fast Ethernet Port Table 6-9 Task Actions Menu Sequence Enter Result [2] ethernet 1 Ethernet port number {1-4} Broadcast throttling for the [3] bcast port is (e)nabled or (d)isabled 2 D(isable)/E(nable) [3] state Example Enter: [2] [3] [3] 4 E Broadcast throttling for Port 4 is enabled.

  • Page 66: Bridge Attributes And Statistics

    Bridge Attributes Display the mapping of the bridge-ports to the Fast Ethernet ports on the and Statistics 7600 Card as well as other bridge attributes and statistics. For more information about bridges in Ethernet LANs see “Transparent Bridges” on page 11-6.
  • Page 67 Bridge Attributes and Statistics Table 6-13 Bridge Attributes and Statistics Name Description Bridge Address The MAC address uniquely identifying the logical bridge. Bridge-port The logical bridge-port number within the bridge. Physical Port The physical Ethernet port to which the logical bridge-port is mapped.

  • Page 68: Update Bridge-Aging- Time

    6-10 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Update Update the bridge FDB parameter bridge-aging-time for a specified Bridge-aging- bridge. For more information about bridges in Ethernet LANs see time “Transparent Bridges” on page 11-6. Table 6-14 Task Actions Menu Sequence Enter...
  • Page 69 Bridge-port Attributes and Statistics 6-11 Table 6-16 Bridge-port Attributes and Statistics (continued) Name Description Delay Exceeded Discards The number of frames discarded by the port, due to excessive transit delay through the bridge. Maximum Transfer Unit The number of frames discarded by the port, due to an (MTU) Exceeded Discards excessive size.

  • Page 70: Display All Entries In Forwarding Database

    6-12 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Display All Entries Displays the complete Forwarding Database (FDB) for the specified in Forwarding bridge, including all addresses, the ports they are mapped to and their Database status. Each database entry is identified by an address. For more information about the Forwarding Database see “Forwarding Database”...
  • Page 71 Display All Entries in Forwarding Database 6-13 ----------------------------------------------------- Addr: 0180c2000000 Port: Status: Management Addr: 01c0da000200 Port: Status: Management Addr: 0180c2000001 Port: Status: Management Addr: 0180c2000002 Port: Status: Management Addr: 0180c2000003 Port: Status: Management Addr: 0180c2000004 Port: Status: Management Addr: 0180c2000005 Port: Status: Management Addr: 0180c2000006...

  • Page 72: Display Learned Entries In Forwarding Database

    6-14 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Display Learned Displays only the learned entries in the Forwarding Database for the Entries in specified bridge. Each entry is identified by an address. For more Forwarding information about learned entries in the Forwarding Database see Database “Learning Station Addresses”...

  • Page 73: Display Static Entries In Forwarding Database

    Display Static Entries in Forwarding Database 6-15 Display Static Displays only the static entries in the Forwarding Database for the Entries in specified bridge. These entries are either predefined or have been Forwarding configured via management. For more information about static entries in Database the Forwarding Database see “Static Addresses”...
  • Page 74 6-16 6: F HAPTER THERNET AND RIDGE ANAGEMENT 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) for this address.
  • 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 signifies the bridge ports to be forwarded to within the specified bridge.
  • Page 76 6-18 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Example Enter: [3] [3] [3] 0 The following is displayed: ----------------------------------------------------------------------- Addr: 0180c2000000 Rcv-P: 0 Alwd-to: fe00 M-ID: Stat: Read-Only Addr: 01c0da000200 Rcv-P: 0 Alwd-to: 0000 M-ID: ---- Stat: Read-Only Addr: 0180c2000001 Rcv-P: 0 Alwd-to: 0000 M-ID: ---- Stat: Read-Only Addr: 0180c2000002 Rcv-P: 0 Alwd-to: 0000 M-ID: ---- Stat: Read-Only Addr: 0180c2000003 Rcv-P: 0 Alwd-to: 0000 M-ID: ---- Stat: Read-Only Addr: 0180c2000004 Rcv-P: 0 Alwd-to: 0000 M-ID: ---- Stat: Read-Only...

  • Page 77: Enter Or Modify A Static Address In Fdb

    Enter or Modify a Static Address in FDB 6-19 Enter or Modify a Add a new static address to the FDB or update an existing one. The static Static Address in entry is added to the Forwarding Database or updated with new destinations if it exists.

  • Page 78: Remove A Static Address From Fdb

    6-20 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Table 6-25 Task Actions Menu Sequence Enter Result [3] bridge 1 Bridge number {0-4} Communication is blocked on the [3] fdb specified ports for the static 2 Station address (MAC [5] block station address specified.

  • Page 79: Display Stp Enable Status

    Display STP Enable Status 6-21 In the static Forwarding Database of bridge #0, the MAC address is removed for input bridge-port #1. 0180c2000000 Display STP Enable Display STP enable status for all bridges. For general information about Status the STP see “Spanning Tree Protocol” on page 11-8. For more information about the STP enable status see “Disabling the STP”...

  • Page 80: Display Bridge Stp Attributes

    6-22 6: F HAPTER THERNET AND RIDGE ANAGEMENT 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 Display all STP attributes for a specified bridge. For general information Attributes about the STP and about the STP parameters see “Spanning Tree Protocol”...
  • Page 81 Display Bridge STP Attributes 6-23 Table 6-30 Bridge STP Attributes (continued) Parameter Description Hold-Time A fixed bridge parameter specifying the minimum time period elapsing between the transmission of CBPDUs through a given bridge-port. No more than two CBPDUs shall be transmitted in any Hold-Time period. Bridge-Max-Age The value of the Max-Age parameter when the bridge is, or is attempting to become, the Root.

  • Page 82: Update Bridge-Wide Stp Parameters

    6-24 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Update Update bridge STP parameters: bridge-priority, bridge-max-age, Bridge-wide STP bridge-hello-time, and bridge-forward-delay (see “Management Bridge Parameters Parameters” on page 11-8 for more information about the STP parameters). Update Update the STP parameter bridge-priority for a specified bridge. Bridge-priority Table 6-31 Task Actions Menu...

  • Page 83: Update Bridge-Forward

    Update Bridge-wide STP Parameters 6-25 Table 6-33 Task Actions Menu Sequence Enter Result [3] bridge 1 Bridge number {0-3} The STP parameter [4] stp bridge-hello-time for this bridge 2 Bridge-hello-time [2] bridge is updated. [4] hello Example Enter: [3] [4] [2] [4] 0 2000 The bridge-hello-time for bridge #0 is set to 2000 secs.

  • Page 84: Display Bridge-Port Stp Attributes

    6-26 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Display Bridge-port Display all STP attributes for a specified bridge-port. STP Attributes Table 6-35 Task Actions Menu Sequence Enter Result [3] bridge 1 Bridge number {0-3} The STP attributes are displayed [4] stp for this bridge-port.

  • Page 85: Disable Bridge-Port

    Disable Bridge-port 6-27 The attributes of port #1 of bridge #0 are displayed as follows: bridge #0 port #1 STP Attributes: ==================================== Bridge-port Priority= 128 Bridge-port State= forwarding Bridge-port Path Cost= 100 Bridge-port Designated Root= 800000c0da1800a0 Bridge-port Designated Cost= 0 Bridge-port Designated Bridge= 800000c0da1800a0 Bridge-port Designated port= 8001 Bridge-port Forward Transitions= 1...

  • Page 86: Update Bridge-Path-Cost

    6-28 6: F HAPTER THERNET AND RIDGE ANAGEMENT ASKS Table 6-38 Task Actions Menu Sequence Enter Result [3] bridge 1 Bridge number {0-3} The STP parameter [4] stp bridge-port-priority for this 2 Bridge-port Number {1-5} [3] port bridge-port is updated. [2] priority 3 Bridge-port-priority Example...

  • Page 87: Managing Atm Resources

    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 in the 7600 Card.

  • Page 88: Display Atm Port Attributes And Statistics

    7: M ATM R HAPTER ANAGING ESOURCES Display ATM Port Displays the internal ATM port attributes and statistics (refer to Table 7-2) Attributes and Statistics Table 7-1 Task Actions Menu Sequence Enter Result [4] atm None Internal ATM port attributes and [1] display statistics are displayed Table 7-2 ATM Port Attributes and Statistics...

  • Page 89: Display Bridge Atm Address

    Display Bridge ATM address The following sample ATM statistics report is displayed. ------------------------------------------------------------------------------------ ATM port: ========= Admin Status : Up Oper Status : Up UNI Version ATM Layer statistics: --------------------- In Octets : 2619649815 In Ucast 49427355 AAL5 Layer statistics: ---------------------- In Octets : 2372513040...

  • Page 90: Update Bridge Atm Address

    7: M ATM R HAPTER ANAGING ESOURCES Table 7-4 ATM Address Fields Field Description Source The source of the ATM addresses: Automatically assigned by ILMI Manually assigned and saved in flash memory In order to use ILMI automatically, this value should not be assigned manually.

  • Page 91: Display Tm Configuration

    [4] [2] [4] 0! Restores the automatic ILMI address registration for bridge #0. Display TM Displays the Traffic Management configuration. Refer to Chapter 13 for Configuration more information about Traffic Management in the 7600 Card. Table 7-6 Task Actions Menu Sequence Enter...

  • Page 92: Enable Tm

    7: M ATM R HAPTER ANAGING ESOURCES --------------------------------------------------------- Traffic Management Configuration TM State is DISABLED. TM TRAM update is DISABLED. Dual rate mechanism is ENABLED. Default profile is 1 Default profile for single users is 2 Operational profile is 3 Operational profile for single users is 4 ---------------------------------------------------------...

  • Page 93: Display

    Display TM Clients Table 7-8 Characteristics of TM Remote Client Database Characteristic Range Default Meaning Entry 1-64 Index of Client in database TM enabled TM enable flag DD connection Direct-data connection Remote client ATM ATM address of client in address database Profile 1-32...

  • Page 94: Add Tm Client

    7: M ATM R HAPTER ANAGING ESOURCES Add TM Client Add Traffic Management client to remote Client Database. For more information see “Display TM Clients” on page 7-6. Table 7-10 Task Actions Menu Sequence Enter Result [4] atm 1 ATM address Client is added to the Traffic [4] tm Management remote Client...

  • Page 95: Update Uni Version

    Update UNI Version 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. Table 7-12 Task Actions Menu Sequence Enter Result [4] atm 3.0 or 3.1 The selected version is saved in flash...
  • Page 96 7-10 7: M ATM R HAPTER ANAGING ESOURCES ATM port is enabled. The following screen message is displayed: Context #0 Event: ATM port Link Up.

  • Page 97: Managing Lan Emulation Clients

    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 describing how the LAN Emulation Client connects a bridge to the ATM network Emulated LAN in the 7600 Card.

  • Page 98: Display Lec Statistics

    8: M LAN E HAPTER ANAGING MULATION LIENTS Topology-change- flag Expected LE_ARP response-time Flush-timeout Path-switching- delay Connection- completion-timer Manage data-frame parameters Update Unknown Unicast-flood- Mode Display LEC Displays the LAN Emulation Client (LEC) connection state and statistics for Statistics the specified bridge (refer to Table 8-2). For more information see “Data Transmission over an ELAN”...
  • Page 99 Display LEC Statistics Table 8-2 LEC Attributes (continued) Attribute Description 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. In Unknown All LE frames received by the LEC, discarded due to unknown protocols.

  • Page 100: Display Current Lec Configuration

    8: M LAN E HAPTER ANAGING MULATION LIENTS ----------------------------------------------------------------- LEC of bridge 0: ================= State: Operational Statistics: ----------- In Octets 237251304 Out Octets In Ucast Out Ucast In Mcast Out Mcast In Bcast Out Bcast In Discards Out Discards : In Errors Out Errors In Unknown...
  • Page 101 Display Current LEC Configuration Table 8-4 LEC Configuration and Status Information (continued) Control Direct VCC VPI/VCI values of the control-direct VCC from the LEC to the LES. Control Distribute VCC VPI/VCI values of the control-distribute VCC from the LES to the LEC. BUS Information Description ATM Address...

  • Page 102: Update Lecs Address

    8: M LAN E HAPTER ANAGING MULATION LIENTS Update LECS Enter the bridge number and ATM address (or “!” to invalidate the Address address) to update the LECS address. For general information about LECS see “LAN Emulation Overview” on page 12-5. Table 8-5 Task Actions Menu Sequence...

  • Page 103: Update Les Address

    Update LES Address 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. Table 8-7 Task Actions Menu Sequence Enter...

  • Page 104: Display Lec Operational Parameters

    8: M LAN E HAPTER ANAGING MULATION LIENTS Display LEC Displays the LEC operational parameters for the specified bridge (refer to Operational Table 8-10). For more information see “LEC Parameters” on page 12-16. Parameters Table 8-9 Task Actions Menu Sequence Enter Result [5] le...

  • Page 105: Control

    Update LEC Operational Parameters Example Enter: [5][3][1] 0 The LEC operational information for the LEC of bridge #0 is displayed as follows: ---------------------------------------------------------- Control Timeout= 120 VCC Timeout= 1200 Aging Time= 300 Forward Delay Time= 15 Expected LE ARP Resp Time= 1 Topology change flag= OFF Flush Timeout= 4 Path Switching Delay= 6...

  • Page 106: Vcc-Timeout-Period

    8-10 8: M LAN E HAPTER ANAGING MULATION 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. Table 8-12 Task Actions Menu Sequence Enter...

  • Page 107: Forward-Delay-Time

    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. Table 8-14 Task Actions Menu Sequence Enter Result [5] le 1 Bridge Number {0-3} The LEC forward-delay-time [3] operational parameter is updated for the 2 LEC forward-delay-time [5] forward specified bridge.

  • Page 108: Flush-Timeout

    8-12 8: M LAN E HAPTER ANAGING MULATION LIENTS Table 8-16 Task Actions Menu Sequence Enter Result [5] le 1 Bridge Number {0-3} The LEC expected LE_ARP [3] operational response-time parameter is 2 LEC expected LE_ARP [7] arp updated for the specified response-time {1-30} bridge.

  • Page 109: Connection- Completion-Timer

    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- Enter the bridge number and connection-completion-timer value to completion-timer update the LEC connection-completion-timer parameter. Table 8-19 Task Actions Menu Sequence Enter Result...

  • Page 110: Display Lec Control-Frame Statistics

    8-14 8: M LAN E HAPTER ANAGING MULATION LIENTS Display LEC Displays the LEC control frame statistics for the specified bridge number Control-frame (refer to Table 8-21). For more information see “Emulated LAN Statistics Connections” on page 12-7. Table 8-20 Task Actions Menu Sequence Enter...
  • Page 111 Display LEC Control-frame Statistics 8-15 Table 8-21 LEC Control Frame Statistics (continued) Parameter Description 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 because the LEC was not in an appropriate state.
  • Page 112 8-16 8: M LAN E HAPTER ANAGING MULATION LIENTS -------------------------------------------------------------------- Statistics for LE Client of bridge 0: ===================================== In Requests: ------------ Narp Topology Flush In Responses: ------------- Config Join Register Unregister Arp Eavesdrop Flush In Ready frames: ---------------- Ready Query Ready Ind In Errors: ----------...

  • Page 113: Reset Lec Control-Frame Statistics

    Reset LEC Control-frame Statistics 8-17 Figure 8-4 LEC Control Frame Statistics Display. Reset LEC Resets the LEC control-frame statistics to zero for the specified bridge. For Control-frame more information see “Emulated LAN Connections” on page 12-7. Statistics Table 8-22 Task Actions Menu Sequence Enter...
  • Page 114 8-18 8: M LAN E HAPTER ANAGING MULATION 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...

  • Page 115: Setting Network Parameters

    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 Gateway must be defined in the bridge to which the SNMP manager is connected.

  • Page 116: Display Current Ip Configuration

    9: S HAPTER ETTING ETWORK ARAMETERS Display Current IP Displays the current IP configuration for each of the bridges (refer to Configuration Table 9-2). Table 9-1 Task Actions Menu Sequence Enter Result [7] management None Current IP configuration [1] ip parameters are displayed for [1]display all bridges...

  • Page 117: Update Default Gateway

    Update Default Gateway Table 9-3 Task Actions Menu Sequence Enter Result [7] management 1 Bridge Number {0-3} IP Address is updated for [1] ip specified bridge. 2 IP Address [4] ip-addr 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 Enter the bridge number and the new Default Gateway to update the Gateway...

  • Page 118: Update Subnet Mask

    9: S HAPTER ETTING ETWORK ARAMETERS Update Subnet Enter the bridge number and the new subnet mask to update the subnet Mask mask for the specified bridge. Example Table 9-5 Task Actions Menu Sequence Enter Result [7] management 1 Bridge Number {0-3} Subnet Mask is updated for [1] ip specified bridge.
  • Page 119 Update NMS IP Address -------------------------------------------------------- Bridge: Default NMS: 100.0.0.92 Bridge: Default NMS: 100.0.2.93 -------------------------------------------------------- Figure 9-2 SNMP Configuration Display. Update NMS IP Enter the bridge number and the new NMS IP address to update the Address Network Management Station (NMS) IP address, for receiving SNMP traps.

  • Page 120: Managing System Functions

    ANAGING YSTEM 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 Display Software Version Display Software Download Status Download Software from Network...

  • Page 121: Display Software Version

    10-2 10: M HAPTER ANAGING YSTEM UNCTIONS Update Write-access Password Update Admin-access Password Manage event messages Enable/Disable Event Messages Resetting system Reset and Reboot Display Software Displays the current software version, revision number and date of Version implementation. Table 10-1 Task Actions Menu Sequence Enter...

  • Page 122: Display Software Download Status

    Display Software Download Status 10-3 Display Software Display the status of the last TFTP software download. Download Status Table 10-2 Task Actions Menu Sequence Enter Result [1] system None Status of last TFTP software [9] load download is displayed [1] display Example Enter: [1] [9] [1]...

  • Page 123: Erase Software From Flash

    6 Change Baud Rate to 57600. 7 Press Enter and the prompt (>) appears. 8 Type “do” and use the terminal emulation software in binary mode to load the 7600 Fast Ethernet Card software. The name of the 7600 file is 763171.str.

  • Page 124: Display Hardware Configuration

    Menu Sequence Enter Result [1] system [2] None The hardware configuration and status pass/failed status of each hardware element within the 7600 Card is displayed. Example Enter: [1] [2] The following is a sample hardware status report for one context:...

  • Page 125: Set System Configuration Mode

    10-6 10: M HAPTER ANAGING YSTEM UNCTIONS --------------------------------------------------------- Context No. 1 Configuration Utopia - Slave, TRAM - 256 K, CRAM - 512 K ZipChip : type ZC2+ Hermon : ver 3.3 : ver 1.10 *** FE Port #1 : Installed *** FE Port #2 : Installed *** FE Port #3 : Installed *** FE Port #4 : Installed...

  • Page 126: Set Store-And-Forward Mode

    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<E>): L Set Store-and- Set the desired store-and-forward mode.

  • Page 127: Display Timeout Parameters

    Name Description Timeout Delay The software and hardware timeout delay in seconds Current Time The current time being used by the 7600 Card Timeout Interrupts The number of interrupts registered by the timeout mechanism False Interrupts The number of false interrupts detected by the software.
  • Page 128 Display Timeout Parameters 10-9 Table 10-9 Timeout Parameters (continued) Name Description 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 full.
  • Page 129 10-10 10: M HAPTER ANAGING YSTEM UNCTIONS ------------------------------------------------------ Timeout recovery process report: -------------------------------- Timeout delay : 30 (SW: 30) Current time : 31494918 Timeout interrupts : 64 False interrupts Events captured Events confirmed Server released : 64 MACE stucked : 0 Queue invalid : 0 Wait for end SW TO : 0 Wait for end HW TO : 0...

  • Page 130: Display Timeout Delays

    Display Timeout Delays 10-11 Figure 10-2 Timeout Parameters Display Display Timeout Display the software and hardware timeout delays. Delays Table 10-10 Task Actions Menu Sequence Enter Result [1] system None The software and hardware timeout [3] update delays are displayed. [8] timeout [2] display Example...

  • Page 131: Update Software Timeout Delay

    The software time-delay parameter is updated to 10 seconds; the following message is displayed: Software Timeout delay has been set. Reset Flash Memory Resets the flash memory with the default factory settings for the 7600 Card, resets and reboots the device. Table 10-13 Task Actions Menu...

  • Page 132: Update Read-Access Password

    Update Read-access Password 10-13 Update Read-access Update the read-access password. Type the new password a second time Password to confirm your entry. Table 10-14 Task Actions Menu Sequence Enter Result [1] system 1 password The read-access password is [6] password updated.

  • Page 133: Update Admin-Access Password

    10-14 10: M HAPTER ANAGING YSTEM 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 Update the admin-access password. Type the new password a second Admin-access time to confirm your entry.

  • Page 134: Reset And Reboot

    Reset and Reboot 10-15 Table 10-17 Task Actions Menu Sequence Enter Result [1] system None Event messages are [7] event enabled/disabled Example When Administration Console event messages are disabled Enter: Administration Console event messages are enabled. Reset and Reboot Reset system hardware and reboot the device for the new system settings to take effect.

  • Page 135: Ethernet Lans And Bridges In The 7600 Card

    7600 Card Capabilities 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...

  • Page 136: Overview Of Ethernet

    THERNET S AND RIDGES IN 7600 C This chapter provides basic concepts and information about the following topics and how they are implemented in the 7600 Card. Overview of Ethernet Fast Ethernet Transparent Bridges Spanning Tree Protocol Bridged-LAN Environments and vLANs...

  • Page 137: Fast Ethernet

    Fast Ethernet, only faster. Network managers benefit substantially from the unchanged protocols; they can understand and deploy Fast Ethernet with minimal additional training. Capabilities The Fast Ethernet ports of the 7600 Card have the following capabilities: Auto-negotiation Full/half duplex transmission mode...
  • Page 138 10/100 Mbps only) Auto-negotiation The 7600 Card has the capability of negotiating with the device with which it is to communicate prior to data transfer in order to determine its mode and speed capabilities (auto-negotiation). The 7600 Card then automatically adjusts its data transmission mode and speed to match that of the communicating device as detailed in the next two sections.

  • Page 139: Cabling

    RIDGES IN THE 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 speed auto-negotiation capability.

  • Page 140: Fast Ethernet Ports

    Figure 11-2 below shows Ethernet LANs connected to the 7600 Card Ethernet ports. Figure 11-2 Attaching Ethernet LANs to Ethernet ports on the 7600 Card Disabling Ports Individual Ethernet ports can be enabled or disabled by management and the corresponding administrative status can be displayed.

  • Page 141: Transparent Bridges

    Bridge ports between the LAN and the bridge. Each bridge port has a unique address. The bridge ports are numbered internally by the bridge. In the 7600 Card, bridge ports are numbered differently from the Ethernet ports to which the Ethernet LANs are physically attached. LANs are assigned to bridges by associating physical port numbers to bridge port numbers when setting up the device.

  • Page 142: Forwarding Database

    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 a received packet’s destination station, allowing the bridge to transmit the packet directly to the correct\ LAN.

  • Page 143: Static Addresses

    An example of a Read-only address is the address of a bridge port, called “Self”. In the 7600 Card, static addresses with various degrees of permanency Defining permanency of...
  • 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 Tree Protocol (STP), an algorithm which seeks to establish a unique path between each pair of LANs in the bridged network by selectively blocking redundant bridge ports.

  • Page 145: Re-Configuring The Spanning Tree

    11-10 11: E 7600 C HAPTER THERNET S AND RIDGES IN THE Among all bridges on a LAN, the bridge with the shortest path to the root Designated Bridge on a LAN bridge (through its root port) is selected as the designated-bridge on that LAN.

  • Page 146: Management Bridge Parameters

    The larger the value for the path-cost, the less through traffic the LAN reached through the port will carry. Bridged-LAN The 7600 Card provides a flexible, user-defined bridging capability Environment s in the designed to support local bridged-LAN environment of different sizes.

  • Page 147: Local Bridged-Lan Environment

    16 internal bridges that can be configured by management. On setup, one bridge is allocated to each bridged-LAN environment that is to operate in the 7600 Card. Each local LAN segment is then attached to a port of the bridge corresponding to the bridged-LAN environment in which it is to operate.

  • Page 148: Atm, Lan Emulation And Irtual Lan

    Data Transmission over an Emulated LAN LEC Parameters Virtual LANs Overview Virtual LANs in the 7600 Card ATM Overview The Asynchronous Transfer Mode (ATM) is a telecommunications method for carriage of a complete range of user traffic, including voice, video and data.

  • Page 149: Atm Basics

    12-2 12: ATM, LAN E HAPTER MULATION IRTUAL ATM Basics ATM uses short, fixed length packets called cells. The first five bytes of Cell Switching each cell, the header, contain the information necessary to deliver the cell to its destination. Fixed-length cells offer the following advantages: Network and switching queueing delays are more predictable with fixed data cells than for variable-length packets.

  • Page 150: Virtual Channels

    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 transmission can begin.

  • Page 151: Switched Virtual Channels

    12-4 12: ATM, LAN E HAPTER MULATION IRTUAL Point-to-point and point-to-multipoint connections Switched Virtual SVC connections are defined dynamically as they are needed and released Channels when not needed, using signalling as per ATM Forum UNI standards. By using SVC, ATM devices can exchange connection characteristics when establishing connections.

  • Page 152: Atm Address Registration

    LE Configuration Server (LECS), an LE Server (LES), and a Broadcast and Unknown Server (BUS). Each LE Client is incorporated in an ATM end station, such as a SuperStack II Switch 2700 or 7600 Card, and represents a set of LAN users, identified by their MAC addresses. The...

  • Page 153: Lan Emulation Client

    12-6 12: ATM, LAN E HAPTER MULATION IRTUAL 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.

  • Page 154: Lan Emulation Configuration Server (Lecs)

    Emulated LAN Connections 12-7 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 The LECS assigns individual LAN Emulation clients to different emulated Configuration Server LANs.

  • Page 155: Lec Control Frame Statistics Display

    12-8 12: ATM, LAN E HAPTER MULATION IRTUAL LEC Control Frame The operator can display statistics on the various types of control frames Statistics Display in and out of the LEC (see “Display LEC Control-frame Statistics” on page 8-14) Data VCCs Data VCCs carry data frames between LECs and between a LEC and the BUS.

  • Page 156: Lec Configuration And Status Information

    Emulated LAN Connections 12-9 Figure 12-1 VCCs in LAN Emulation Components LEC Configuration The following information about the configuration of the bridge LEC in and Status the ELAN to which it belongs including connections to LECS, LES and BUS Information can be displayed to the operator (see “Display Current LEC Configuration”...

  • Page 157: Bridges In The 7600 Card

    VPI/VCI values of the multicast-forward VCC originated by the BUS to the LEC. Bridges in the 7600 In the 7600 Card a LEC is attached to each Ethernet transparent bridge Card which is set up in the device. The LEC connects the bridged-LAN...
  • 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 In fact, both Ethernet and ATM switching in the bridge are combined in a...

  • Page 159: Bridge Forwarding Database

    12-12 12: ATM, LAN E HAPTER MULATION IRTUAL Bridge Forwarding In order to forward data frames efficiently to both local LAN stations on Database the transparent bridge as well as to remote LAN stations represented by other LECs on the ATM network, a combined Forwarding Database (FDB) is established and maintained in the bridge.

  • Page 160: Learning Addresses

    LAN stations which reside on a transparent bridge, as is the case for LANs attached to the 7600 Card. In this case, the LANs are considered to be “remote” from the LEC and the LEC is called a proxy for the bridged LANs.

  • Page 161: Aging In The Le_Arp Cache

    12-14 12: ATM, LAN E HAPTER MULATION IRTUAL Aging in the LE_ARP As in the transparent bridge FDB, inactive entries in the LE_ARP cache are Cache removed (aged out). Two LEC parameters are employed for this purpose: aging-time and forward-delay-time. The parameter used depends on the way the entry was originally obtained and if the topology-flag is set.

  • Page 162: Data Transmission Over An Elan

    VCC can be set up. Unknown unicast flooding mode The 7600 Card allows these two actions to be performed in combination according to management selection. The unknown unicast flooding mode allows the user to specify one of the following possibilities for...

  • Page 163: Control Information On Data Vcs

    VCs (Flush, Ready frames) and be identified by a special frame header (LECID field). The 7600 Card can extract these frames from the data as well as generate control frames as required.

  • Page 164: Virtual Lans Overview

    Virtual LANs Overview 12-17 Table 12-6 LEC Operational Parameters (continued) Parameter Description Minimum Default Maximum VCC-timeout An LEC should release any Data-direct VCC None specified 20 minutes Unlimited that has not been used to transmit or receive any data frames for the length of the VCC timeout period.

  • Page 165: Virtual Lans In The 7600 Card

    A vLAN will usually contain some Ethernet segments physically connected Segments to a vLAN to the 7600 Card (local segments) as well as remote segments located in different parts of the ATM network. Logically, the connection of the local Ethernet segments into a vLAN proceeds in two steps: first, they are formed into a local bridged-LAN environment by connecting them to a local bridge (see “Bridged-LAN Environments in the 7600 Card”...
  • 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 data-direct VCCs on which members of the vLAN communicate.
  • Page 167 12-20 12: ATM, LAN E HAPTER MULATION IRTUAL 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.

  • Page 168: Virtual Lans For Three Workgroups

    Virtual LANs in the 7600 Card 12-21 Emulated LAN LES2 BUS2 CELLplex 7000 chassis LEC2 LEC3 CELLplex 7000 chassis 7600 7600 modules modules Marketing Marketing Virtual LAN Figure 12-5 ELAN in a Virtual LAN Virtual LANs for three Figure 12-6 shows the physical and virtual view of a network divided into Workgroups three vLANs: Marketing, Finance.
  • Page 169 12-22 12: ATM, LAN E HAPTER MULATION IRTUAL Figure 12-6 Logical and Physical View of a Network With vLANs...

  • Page 170: Traffic Management In The Atm Network

    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: Overview of the concepts and operation of Traffic Management How Traffic Management is implemented within the 7600 Card...

  • Page 171: Flow Control Model For Abr

    Flow Control Model ABR flow control occurs between a sending end-system (source), such as for ABR a 7600, and a receiving end-system (destination). Sources and destinations are connected via bi-directional connections. For a bi-directional ABR connection, each connection termination point is both a source and a destination.

  • Page 172: Traffic Management Concepts

    Traffic Management Concepts 13-3 Directly insert feedback control information into RM-cells when they pass in the forward or backward direction 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, the destination will update the backward RM-cells based on this congestion information.

  • Page 173: Explicit Rate Control

    13-4 13: T ATM N HAPTER RAFFIC ANAGEMENT IN THE 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 control by adding the explicit rate (ER) field to the RM cell.

  • Page 174: Traffic Rates Shaping In The 7600 Card

    The RM cell is then returned to the source 7600 Card. In case the RM-cell is not returned to the source 7600 Card or the CI bit is set, the traffic rate is automatically decreased. A received RM-cell with the CI bit cleared enables the sending 7600 Card to increase its sending rate.

  • Page 175: Flow Rate Adjustment

    VCs the maximum rate is set to one-half the full rate. Static and Dynamic In the 7600 Card there are two types of Traffic Management: static and dynamic. The static TM is essentially the dual-rate mechanism described in the previous section.

  • Page 176: Traffic Management In The Network

    Traffic Management in the Network 13-7 Traffic Figure 13-2 below shows a network scenario, where two 7600 Cards, Management in the denoted by source station and destination station are found with an ATM Network cloud between them. The shaded area between the stations represents a VCC connection over which a data flow and an RM-cell flow takes place as shown.

  • Page 177: Device Management

    External SNMP-based network management applications, such as Transcend Manager. The 7600 Card uses virtual terminal protocols, such as rlogin and Telnet in addition to the LM to run the system administration console and SNMP to run the SNMP-based management applications (refer to Figure 14-1).

  • Page 178: In-Band & Out-Of-Band Management

    14-2 14: D HAPTER EVICE ANAGEMENT Figure 14-1 User Interfaces and Protocols used to access the 7600 Card In-Band & Configuration of the 7600 Card can be performed via an Administration Out-of-Band Console or an SNMP-based external network management application Management running on a workstation.

  • Page 179: 7600 Card Management

    7600 Card. 7600 Card The following protocols are used by the 7600 Card to deliver Management management and administration data to and from the 7600 Card: Local Management (LM), Simple Network Management Protocol (SNMP) and Virtual terminal protocols.

  • Page 180: Simple Network Management Protocol (Snmp)

    User Datagram Protocol (UDP), offering a connectionless-mode service. This allows SNMP to pass management information before a session is established. The 7600 Card can be managed through SNMP-based external network management applications running on a workstation. Transcend Enterprise Manager, a network management application from 3Com, manages 7600 Cards by graphically displaying the network.
  • Page 181 Base (MIB) is installed correctly at the management station. SNMP Agents The SNMP agent of the 7600 Card responds to SNMP requests from an external SNMP manager. Each 7600 Card has one SNMP agent which monitors objects on the system and reports data to the Administration Console or a network management system.
  • Page 182 Management Information Base (MIB). Information defined in industry-standard, de-facto standard, and enterprise-specific (private) MIBs supported by the 7600 Card can be accessed. These MIBs are collections of related managed objects (abstract representations of resources that are capable of being managed). Some examples of these resources are error counters, ports, and network policies.

  • Page 183: Virtual Terminal Protocols

    Telnet, that allows establishment of a management session from a PC or a workstation. Since rlogin and Telnet run over TCP/IP, at least one IP address must be configured on the 7600 Card to access it with a virtual terminal protocol.
  • Page 184 14-8 14: D HAPTER EVICE ANAGEMENT Figure 14-5 Local Management Protocol Access...

  • Page 185: System Modes , Attributes And Tuning

    The 7600 Card converts Ethernet frames to ATM sized cells (48 bytes) Cell Switching upon receipt and then uses cell switching to forward the frames to their destination addresses.

  • Page 186: Timeout Tuning

    These parameters are used to avoid cells being stuck in the 7600 Card for extended periods of time. This usually occurs when the frame was not assembled correctly and is too long, or the last cell of the frame was not received from the ATM ports.

  • Page 187: Console Passwords

    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.

  • Page 188: 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 3Com offers worldwide product support seven days a week, 24 hours a Services day, through the following on-line systems: 3Com Bulletin Board Service (3ComBBS) Ask3Com on CompuServe®...

  • Page 189: Ask3Com On Compuserve

    Automated Fax sheets, technical articles, diagrams, and troubleshooting instructions on Service 3Com products 24 hours a day, seven days a week. Within this service, you may choose to access CardFacts® for adapter information, or NetFacts for network system product information.

  • Page 190: Support From 3Com

    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 to find your authorized service provider. For the telephone numbers see Table A-3.

  • Page 191: Returning Products For Repair

    14400 baud (1) (408) 980 8204 Returning Products A product sent directly to 3Com for repair must first be assigned a Return for Repair Materials Authorization (RMA) number. A product sent to 3Com without an RMA number will be returned to the send unopened, at the sender's expense.

  • Page 192: Troubleshooting

    Following are common problems which may arise while working with the Problems 7600 Card. If your problem does not appear on this list, you may want to view relevant statistics and parameters using the Administration Console menus (refer to CELLplex 7000 Administration Guide). You can also contact 3Com Technical Support or your service person (refer to Appendix E- Technical Support).

  • Page 193: Related Diagnostic Procedures

    When troubleshooting for problems, you may have to perform minor Procedures procedures to help correct the problem. These procedures are described below. For more complex operations on the 7600 Card, contact your service person. Cleaning Dirty Fiber optic transceivers are sensitive optical devices that need to be handled carefully.
  • Page 194 Related Diagnostic Procedures 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 Kontakte und verdecken Sie alle nicht benutzten Öffnungen.

  • Page 195: 7600 Fast

    7600 F THERNET PECIFICATIONS This chapter contains the specifications of the 7600 Card. Physical 1¾ in 4.5 cm Height 17 in 39.5 cm Width 11 in 23.5 cm Depth ±3.3 lb ±1.5 kg Weight Interfaces Fast Ethernet 8 or 16 100Base-Fx or 100Base-Tx Ports...

  • Page 196: Environmental

    C: 7600 F PPENDIX THERNET PECIFICATIONS LAN Emulation Client (LEC) support Local management via the CELLplex 7000’s RS-232 port Congestion management MIBs supported: MIB2, Bridge MIB, AToM MIB, LEC MIB, RMON MIB, Interface Evolution MIB, NCDCHASS MIB (private) Environmental Operating Temperature 32°...

  • Page 197: Standards Compliance

    Standards Compliance Standards Compliance Safety 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 Designed to Comply with VDE 0871 part 2 class A, EN 55022 AC Protection20 amp circuit breaker Electromagnetic Meets FCC part 15, Subparagraph B, Class A limits, and CISPR-22 Emissions (Agency...
  • Page 198 An alias given to an ATM address on a specific port in order to avoid typing in the ATM address 20 octets long. AU ID Unique number assigned to the 7600 Card. May be found through the Administration Console Menus of the LinkSwitch. backbone The main segment of a campus network, to which are attached department networks, or ribs.
  • Page 199 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 A bit in the ATM cell header indicating that if there is a need to discard (CLP) a cell, the cell with the CLP bit marked is to be discarded.
  • Page 200 MAC addresses and/or route descriptors to ATM addresses. LinkSwitch 2700 3Com Ethernet-to-ATM switch used to connect Ethernet network devices to each other and to an ATM backbone. Local management of a network device, via a connected terminal.
  • Page 201 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 A one-way call or connection that has only one source, but may have call many destinations.
  • Page 202 LOSSARY User Network The UNI interconnects an ATM user with an ATM switch. Interface (UNI) Wide Area Network Data communications network spanning very large geographical areas. (WAN)
  • Page 203 3ComFacts Automated Fax Service A-2 LECS 8-4, 8-6, 12-9 7600 Card LES 8-4, 8-5, 12-10 bridge setup 12-18 ATM port 7600 Fast Ethernet Interface Card administrative status 7-2 About This Guide 1 enable administrative status 7-9 Functional Overview 1-1 octets 7-2...
  • Page 204 VCC display LECS 8-4, 12-9 ATM port attributes and statistics 7-2 configuring Bridge ATM address 7-3 7600 Card 2-5 Bridge attributes and statistics 6-8 Admin vLAN management 3-9 Bridge STP attributes 6-22 default gateway 3-10 broadcast attributes 6-5 ELANs 3-10...
  • Page 205 NDEX LEC control-frame statistics 8-14 administrative status 6-3 LEC operational parameters 8-8 assigned to Bridge 5-2 LEC statistics 8-2 attaching to Bridge 5-2 main menu 4-1 attributes and statistics 6-2 SNMP configuration 9-4 auto-negotiation 11-2 software download status 10-3 autonegotiation 6-7 software time-out parameters 10-8 broadcast frames 6-3 software version 10-2...
  • Page 206 14-2 unicast frames 8-2 indicators unknown frames 8-3 specifications C-2 VCC time-out 12-17 installing LEC control-frame statistics 7600 Card 2-4 reset 8-17 Fast Ethernet physical module 2-5 LEC ID integrated setup LES 12-9 operation 3-5 LECS internal ATM port...
  • Page 207 NDEX populating 12-6 3Com Bulletin Board Service A-1 Link status 2-9 3ComFacts Automated Fax Service A-2 LM security 14-7 Ask3Com on CompuServe A-2 local management terminal 2-6 operating humidity C-2 Local Management, see LM operating temperature C-2 locating information in documents 3...
  • Page 208 C-3 system states 2-7 environmental C-2 Ethernet switching C-1 indicators C-2 interfaces C-1 management C-2 technical support A-1 management protocols C-3 telephone support A-2 physical C-1 support from 3Com A-3 safety standards C-3 support from network supplier A-3...
  • Page 209 Virtual Channel Identifier, see VCI unknown address Virtual LAN defintion 12-13 box-wide 3-2 unknown unicast flooding mode 12-14, 12-15 configuring 3-8, 3-10, 5-1 unknown unicast-flooding mode connecting local segments to 12-18 update 8-17 for Workgroup 12-21 update in 7600 Card 12-18...
  • Page 210 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 ZipChip ASIC 7600 Card 12-11...

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