Network Card User Manual

ManualsBrands3Com ManualsNetwork Card7600

http://www.3com.com/

7600 Fast Ethernet Card

User Guide

Part No. DUA7600-0AAA01

Published November 1997

abtthgde.book Page i Tuesday, June 23, 1998 10:29 AM

Summary of content (210 pages)

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abtthgde.book Page i Tuesday, June 23, 1998 10:29 AM ® 7600 Fast Ethernet Card User Guide http://www.3com.com/ Part No.
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abtthgde.book Page ii Tuesday, June 23, 1998 10:29 AM 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 permission from 3Com Corporation.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM Who Should Use This Guide 1 ABOUT THIS GUIDE 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.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 2 ABOUT THIS GUIDE If you are looking for information about: (continued) Turn to: An overview of system Modes, Attributes and Tuning Chapter 15 Technical support available for the 7600 Card Appendix A Troubleshooting the 7600 Card Appendix B Specifications of the 7600 Card Appendix C Conventions Tables 1 and 2 list conventions used throughout this guide.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Related Manuals 3 Table 3 7600 Card Documentation and Related Manuals (continued) Documentation Road Map Manual Name 3COM Part No. Transcend Enterprise Manager, ATM and VLAN Management DUA2785-0NAA03 The Documentation Road Map in Table 4 helps you locate specific information in the 7600 Card documentation set. . Table 4 7600 Card Documentation Road Map If you want to... Read...
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 1 OVERVIEW OF THE 7600 CARD This chapter provides an overview of the 7600 Fast Ethernet Interface Card and its major features and components. About the 7600 Card A Look at the 7600 Card Port Configurations The 7600 Card provides up to 16 Fast Ethernet fiber optic or copper ports and is based on multiple ASIC ZipChip technology.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 7600 Card Capabilities Connectors 1-3 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.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 1-4 CHAPTER 1: OVERVIEW OF THE 7600 CARD switch and is similar in functionality to the 7200 Ethernet/ATM Interface Card. 7600 Card Benefits Ethernet-switching Features Virtual LANs Fast Ethernet switching works with Virtual LANs and management to ensure that information flow does not cross Virtual LAN boundaries. The 7600 Card provides the following benefits: Q Boosts performance for individual workstations where bandwidth demands are high.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM 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 workgroups composed of members from various departments or business units around the enterprise, regardless of their physical location.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Typical Applications of the 7600 Card Server Farm 1-7 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.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 2 INSTALLATION AND POWER-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.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 2-2 CHAPTER 2: INSTALLATION AND POWER-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. Ensure that the chassis ventilation openings in the unit are NOT BLOCKED.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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 Handgelenk, daß gut geerdet ist. Das hilft vermeiden, daß das Ersatzteil durch elektrostatische Entladung beschädigt wird.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 2-4 CHAPTER 2: INSTALLATION AND POWER-UP Installing and Removing the 7600 Card Modules Installing the 7600 Card Module The following section discusses how to install and remove the 7600 Card and its optional modules.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Connecting to Network Devices Installing a Fast Ethernet Physical Module 2-5 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 with which to attach the physical modules.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 2-6 CHAPTER 2: INSTALLATION AND POWER-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. All interface cards in the CELLplex 7000 can be managed via the serial port, using an RS-232 connection through a female 9-pin D-type connector.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM 7600 Card System States 7600 Card System States System States and LEDs 2-7 This section describes the different system states of the 7600 Card and how they are indicated on the LED display. The following Table 2-2 lists the system states of the 7600 Card module in the first column. The state in which the 7600 Card is currently operating is displayed by the system status LEDs.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 2-8 CHAPTER 2: INSTALLATION AND POWER-UP Table 2-3 System Status LEDs SYS LED Mode Meaning and User Action Power (green) On Unit is functioning properly. Off If the unit is not functioning, contact your supplier. Fail (red) On A hardware fault in the unit has been detected. If possible, extract the 7600 Card from the chassis and plug it back in. If this fails to rectify the problem, contact your supplier. Off No hardware fault detected.
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM 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 connected. Packet status (*Orange) There is active traffic on the port.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 3 FAST SETUP This chapter describes two methods of configuring the 7600 Card which allow it to function in the network almost immediately.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 3-2 CHAPTER 3: FAST SETUP 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 Setup procedure is based on a concept in which the CELLplex 7000 Switch together with its installed interface cards is viewed as an integrated unit or box.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 3-4 CHAPTER 3: FAST SETUP Setup Procedure Sections The Integrated Fast Setup consists of the following steps or sections: Table 3-1 Integrated Fast Setup Procedure Sections Navigation Aids Setup Section Description Network Prefix See CELLplex 7000 Manual. LE Parameters See CELLplex 7000 Manual. LECS Address See CELLplex 7000 Manual. UNI/NNI parameters See CELLplex 7000 Manual.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM CELLplex 7000 Integrated Fast Setup Integrated Fast Setup Operation 3-5 The Integrated Fast Setup is initiated from the LMA Main Menu of the CELLplex 7000.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 3-6 CHAPTER 3: FAST SETUP 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, F): F ***Note: Full fast setup, special module configuration will be overridden.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM 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 =----------------NNI max hops (0 - 120): 7 NNI type of port <3.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 3-8 CHAPTER 3: FAST SETUP LE Client Configuration Section LE Client Configuration -=--------------------- *** Hit Enter after VN #7 for end of potential ELAN names list.
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 10 Tuesday, June 23, 1998 10:29 AM 3-10 CHAPTER 3: FAST SETUP 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 contexts. These are displayed in the following table: .
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abtthgde.book Page 11 Tuesday, June 23, 1998 10:29 AM Multi-context Fast Setup 3-11 subnet masks, can be assigned to each logical bridge defined in the Virtual Network Configuration. Q Editing Guidelines Navigation Aids System Mode Configuration. The 7600 Card can be configured to operate in one mode: LAN Emulation (LE).
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abtthgde.book Page 12 Tuesday, June 23, 1998 10:29 AM 3-12 CHAPTER 3: FAST SETUP 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.
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abtthgde.book Page 13 Tuesday, June 23, 1998 10:29 AM Multi-context Fast Setup Virtual Network 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 Ethernet port #3 belongs to Bridge No.(0-3): 1 . . .
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abtthgde.book Page 14 Tuesday, June 23, 1998 10:29 AM 3-14 CHAPTER 3: FAST SETUP System Mode Configuration Section System Mode Configuration ------------------------Enter system mode (L): L The new configuration is displayed for this context.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 4 LOCAL MANAGEMENT BASICS 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 administration console configures your 7600 Card. It also provides some network management capabilities.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 4-2 CHAPTER 4: LOCAL MANAGEMENT BASICS 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.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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: . Table 4-1 Port Context Contex t #0 Contex t #1 Contex t #2 Contex t #3 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 The management menus and commands focus on one context at a time. Each menu has the currently active context displayed above it.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 4-4 CHAPTER 4: LOCAL MANAGEMENT BASICS Entry of the stp submenu’s 3 option produces the prompt: (3)bridge\(4)stp\(3)port>.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM 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 End of the command line. .n Context n (0-3) =n Another module n=0: Switch module n=1-4: Interface Card module 1-4 Table 4-3 Editing Aids Type: To perform: < Clear the value of the parameter last entered.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 4-6 CHAPTER 4: LOCAL MANAGEMENT BASICS 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. . . . . . . . . . . . . . . . . . . . . . . . . . . 10--2 . . . . . . . [2] status. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10--3 . . . . . . . [3] update. . . . . . . .
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Menu Index . . . . . . . . . . . . . . .[3] state. . . . . . . . . . . . . . . . . . . . . . . 6-6 . . . . . . . [4] update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7 Bridge Menu [3] bridge . . . . . . . [1] display. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 . . . . . . . [2] port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10 . . . . . . . [3] fdb . . . . . . . . . . . . . . .[1] display. . . . . .
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 4-8 CHAPTER 4: LOCAL MANAGEMENT BASICS . . . . . . . [3] vcc . . . . . . . [4] tm . . . . . . . . . . . . . [1] display. . . . . . . . . . . . . . . . . . . . 7-5 . . . . . . . . . . . . . [2] enable. . . . . . . . . . . . . . . . . . . . 7-6 . . . . . . . . . . . . . [3] client. .............. [1] display. . . . . . . . . . . . 7-6 .............. [2] add . . . . . . . . . . . . . . 7-8 [3] remove. . . . . . . . . . . . 7-8 .............. . . . .
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM Menu Index Virtual LAN Menu [6] vns . . . . . . . [1] display. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 . . . . . . . [4] ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 . . . . . . . [5] atm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Network Management Menu [7] management . . . . . . . [1] ip . . . . . . . . . . . . . . .[1] display. . . . . . . . . . . . . . . . . . . . . 9-2 . . . . . . .
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 5 CONFIGURING VIRTUAL LANS 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.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 5-2 CHAPTER 5: CONFIGURING VIRTUAL LANS Table 5-1 Task Actions Menu Sequence [6] vns [1] display Enter Result None Current bridge configuration parameters are displayed Table 5-2 Bridge Configuration Parameters Parameter Description Bridge The bridge number Fast Ethernet Ports The Fast Ethernet ports assigned to the bridge. ATM Q Yes: The internal ATM downlink port is assigned to the bridge (i.e.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Attach Internal ATM Port to Bridge 5-3 Table 5-3 Task Actions Menu Sequence [6]vns [4] ethernet Enter Result 1 Bridge Number {0-3} Specified Fast Ethernet port is attached to specified bridge 2 Fast Ethernet Port Number {1-4} 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.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 6 FAST ETHERNET AND BRIDGE MANAGEMENT TASKS 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.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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. Oper Status Q Up: Port is enabled by management Q Down: Port is disabled by management The Port operational status.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 6-4 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS 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. Out Mcast Multicast frames transmitted out of the port including discards.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Disable a Fast Ethernet Port Disable a Fast Ethernet Port 6-5 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). Table 6-5 Task Actions Menu Sequence [2] ethernet [2] status Enter Result 1 Ethernet port number {1-4} Administrative Status of Port is enabled or disabled 2 U(p)/D(own) Example Enter: [2] [2] 4 U Ethernet Port 4 is enabled.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 6-6 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Table 6-7 Broadcast Throttling Attributes (continued) Name Description Enable status Broadcast throttling enabled/disabled for this port.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Update Fast Ethernet Port 6-7 Table 6-9 Task Actions Menu Sequence [2] ethernet [3] bcast [3] state Enter Result 1 Ethernet port number {1-4} Broadcast throttling for the port is (e)nabled or (d)isabled 2 D(isable)/E(nable) Example Enter: [2] [3] [3] 4 E Broadcast throttling for Port 4 is enabled. Update Fast Ethernet Port Updates Fast Ethernet port attributes.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 6-8 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Table 6-11 Task Actions for Tx Port Type Menu Sequence [2] ethernet [4] update Enter Result 1 Ethernet port number {1-4} The Fast Ethernet Tx port attributes are updated.
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM Bridge Attributes and Statistics 6-9 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. Aging Time The bridge aging time.
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abtthgde.book Page 10 Tuesday, June 23, 1998 10:29 AM 6-10 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Update Bridge-agingtime 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. Table 6-14 Task Actions Menu Sequence [3] bridge [5] aging Enter Result 1 Bridge number {0-3} The bridge FDB parameter bridge-aging-time for this bridge is updated.
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abtthgde.book Page 11 Tuesday, June 23, 1998 10:29 AM 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 (MTU) Exceeded Discards The number of frames discarded by the port, due to an excessive size.
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abtthgde.book Page 12 Tuesday, June 23, 1998 10:29 AM 6-12 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS 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. For more information about the Forwarding Database see “Forwarding Database” on page 11-7.
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abtthgde.book Page 14 Tuesday, June 23, 1998 10:29 AM 6-14 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS 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 Database see “Learning Station Addresses” on page 11-7.
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abtthgde.book Page 15 Tuesday, June 23, 1998 10:29 AM Display Static Entries in Forwarding Database Display Static Entries in Forwarding Database 6-15 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 in the Forwarding Database see “Static Addresses” on page 11-8.
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abtthgde.book Page 16 Tuesday, June 23, 1998 10:29 AM 6-16 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS 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. The allowed-to information is displayed in binary form, with each digit referring to 5 bridge-ports.
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abtthgde.book Page 17 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 19 Tuesday, June 23, 1998 10:29 AM Enter or Modify a Static Address in FDB Enter or Modify a Static Address in FDB 6-19 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 status values may be given using an SNMP manager. For more information about static entries in the Forwarding Database see “Static Addresses” on page 11-8.
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abtthgde.book Page 20 Tuesday, June 23, 1998 10:29 AM 6-20 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Table 6-25 Task Actions Menu Sequence [3] bridge [3] fdb [5] block Enter Result 1 Bridge number {0-4} Communication is blocked on the specified ports for the static station address specified.
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abtthgde.book Page 21 Tuesday, June 23, 1998 10:29 AM 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 more information about the STP enable status see “Disabling the STP” on page 11-10.
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abtthgde.book Page 22 Tuesday, June 23, 1998 10:29 AM 6-22 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS 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 about the STP and about the STP parameters see “Spanning Tree Protocol” on page 11-6.
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abtthgde.book Page 23 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 24 Tuesday, June 23, 1998 10:29 AM 6-24 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Update Bridge-wide STP Parameters Update Bridge-priority 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). Update the STP parameter bridge-priority for a specified bridge.
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abtthgde.book Page 25 Tuesday, June 23, 1998 10:29 AM Update Bridge-wide STP Parameters 6-25 Table 6-33 Task Actions Menu Sequence [3] bridge [4] stp [2] bridge [4] hello Enter Result 1 Bridge number {0-3} The STP parameter bridge-hello-time for this bridge is updated. 2 Bridge-hello-time Example Enter: [3] [4] [2] [4] 0 2000 The bridge-hello-time for bridge #0 is set to 2000 secs. Update Bridge-forwarddelay Update the STP parameter bridge-forward-delay for a specified bridge.
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abtthgde.book Page 26 Tuesday, June 23, 1998 10:29 AM 6-26 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Display Bridge-port STP Attributes Display all STP attributes for a specified bridge-port. Table 6-35 Task Actions Menu Sequence [3] bridge [4] stp [3] port [1] display Enter Result 1 Bridge number {0-3} The STP attributes are displayed for this bridge-port.
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abtthgde.book Page 28 Tuesday, June 23, 1998 10:29 AM 6-28 CHAPTER 6: FAST ETHERNET AND BRIDGE MANAGEMENT TASKS Table 6-38 Task Actions Menu Sequence [3] bridge [4] stp [3] port [2] priority Enter Result 1 Bridge number {0-3} The STP parameter bridge-port-priority for this bridge-port is updated. 2 Bridge-port Number {1-5} 3 Bridge-port-priority Example Enter: [3] [4] [3] [2] 0 1 128 The bridge-port-priority for port #1 of bridge #0 is set to 128.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 7 MANAGING ATM RESOURCES 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.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Display Bridge ATM address 7-3 The following sample ATM statistics report is displayed. ------------------------------------------------------------------------------------ ATM port: ========= Admin Status : Up Oper Status : Up UNI Version 3.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 7-4 CHAPTER 7: MANAGING ATM RESOURCES Table 7-4 ATM Address Fields Field Description Source The source of the ATM addresses: Q Automatically assigned by ILMI Q Manually assigned and saved in flash memory In order to use ILMI automatically, this value should not be assigned manually. State (in ILMI) State of the ATM address within ILMI. If no address has been manually assigned, ILMI is automatically used.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Display TM Configuration 7-5 Table 7-5 Task Actions Menu Sequence [4] atm [2] address [4] change Enter Result 1 Bridge Number {0-3} Q ATM address: Updates ATM address of the bridges. Q “!”: Restores the automatic ILMI address registration for this bridge. 2 ATM Address or “!” Example Enter: [4] [2] [4] 0! Restores the automatic ILMI address registration for bridge #0. Display TM Configuration Displays the Traffic Management configuration.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 7-6 CHAPTER 7: MANAGING ATM RESOURCES --------------------------------------------------------Traffic Management Configuration TM State is DISABLED. TM TRAM update is DISABLED. Dual rate mechanism is ENABLED.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Display TM Clients 7-7 Table 7-8 Characteristics of TM Remote Client Database Characteristic Range Entry 1-64 Default Meaning TM enabled Y/N Y TM enable flag DD connection Y/N Y Direct-data connection Index of Client in database Remote client ATM address ATM address of client in database Profile 1-32 3 Index of lookup table used to determine data transmission rates TM Peak rate 0-1.55e +08 1.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 7-8 CHAPTER 7: MANAGING ATM RESOURCES 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 [4] atm [4] tm [3] client [2] add Enter Result 1 ATM address Client is added to the Traffic Management remote Client Database. 2 Profile (1-32) 3 TM peak rate 4 TM enable (Y/N) Example .
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM 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. Table 7-12 Task Actions Menu Sequence [4] atm [6] uni Enter Result 3.0 or 3.1 The selected version is saved in flash Example Enter: [4] [6] The following screen prompt is displayed. The currently active version is displayed after the colon.
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abtthgde.book Page 10 Tuesday, June 23, 1998 10:29 AM 7-10 CHAPTER 7: MANAGING ATM RESOURCES ATM port is enabled. The following screen message is displayed: Context #0 Event: ATM port Link Up.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 8 MANAGING LAN EMULATION CLIENTS 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.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 8-2 CHAPTER 8: MANAGING LAN EMULATION CLIENTS 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 Display LEC Statistics Update Unknown Unicast-flood- Mode Displays the LAN Emulation Client (LEC) connection state and statistics for the specified bridge (refer to Table 8-2).
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Display LEC Statistics 8-3 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. Out Octets All octets of LE frames transmitted by the LEC.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Display Current LEC Configuration 8-5 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 ATM address of the BUS. Multicast Send VCC VPI/VCI values of the multicast-send VCC from the LEC to the BUS.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 8-6 CHAPTER 8: MANAGING LAN EMULATION CLIENTS 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.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Update LES Address Update LES Address 8-7 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.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 8-8 CHAPTER 8: MANAGING LAN EMULATION CLIENTS 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 [5] le [3] operational [1] display Enter Result 1 Bridge Number {0-3} LEC operational information for the specified bridge is displayed.
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abtthgde.book Page 10 Tuesday, June 23, 1998 10:29 AM 8-10 CHAPTER 8: MANAGING LAN EMULATION CLIENTS 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 [5] le [3] operational [3] vcc Enter Result 1 Bridge Number {0-3} The VCC-timeout-period parameter is updated for the specified bridge.
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abtthgde.book Page 11 Tuesday, June 23, 1998 10:29 AM Update LEC Operational Parameters Forward-delay-time 8-11 Enter the bridge number and forward-delay-time value to update the LEC forward-delay-time parameter. Table 8-14 Task Actions Menu Sequence [5] le [3] operational [5] forward Enter Result 1 Bridge Number {0-3} The LEC forward-delay-time parameter is updated for the specified bridge.
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abtthgde.book Page 12 Tuesday, June 23, 1998 10:29 AM 8-12 CHAPTER 8: MANAGING LAN EMULATION CLIENTS Table 8-16 Task Actions Menu Sequence [5] le [3] operational [7] arp Enter Result 1 Bridge Number {0-3} The LEC expected LE_ARP response-time parameter is updated for the specified bridge. 2 LEC expected LE_ARP response-time {1-30} 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.
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abtthgde.book Page 13 Tuesday, June 23, 1998 10:29 AM 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. Connectioncompletion-timer Enter the bridge number and connection-completion-timer value to update the LEC connection-completion-timer parameter.
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abtthgde.book Page 14 Tuesday, June 23, 1998 10:29 AM 8-14 CHAPTER 8: MANAGING LAN EMULATION CLIENTS 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 [5] le [4] lec-control Enter Result Bridge Number {0-3} LEC control frame statistics for the specified bridge are displayed.
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abtthgde.book Page 15 Tuesday, June 23, 1998 10:29 AM 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. Config (Out Requests) Number of configuration requests sent by the LEC.
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abtthgde.book Page 17 Tuesday, June 23, 1998 10:29 AM 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. Table 8-22 Task Actions Menu Sequence [5] le [5] reset Enter Result Bridge Number {0-3} LEC control frame statistics are reset to zero for the selected bridge.
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abtthgde.book Page 18 Tuesday, June 23, 1998 10:29 AM 8-18 CHAPTER 8: MANAGING LAN EMULATION CLIENTS No unicast frames are sent to the BUS for the specified bridge and the following message is displayed.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 9 SETTING NETWORK PARAMETERS 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. The IP address is used to identify the 7600 Card within the network.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 9-2 CHAPTER 9: SETTING NETWORK PARAMETERS Display Current IP Configuration Displays the current IP configuration for each of the bridges (refer to Table 9-2). Table 9-1 Task Actions Menu Sequence Enter Result [7] management [1] ip [1]display None Current IP configuration parameters are displayed for all bridges Table 9-2 IP Configuration Information Parameter Description Bridge The number of the bridge (virtual network).
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Update Default Gateway 9-3 Table 9-3 Task Actions Menu Sequence Enter Result [7] management [1] ip [4] ip-addr 1 Bridge Number {0-3} IP Address is updated for specified bridge. 2 IP Address 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.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 9-4 CHAPTER 9: SETTING NETWORK PARAMETERS Update Subnet Mask Enter the bridge number and the new subnet mask to update the subnet mask for the specified bridge. Example Table 9-5 Task Actions Menu Sequence Enter Result [7] management [1] ip [6] mask 1 Bridge Number {0-3} Subnet Mask is updated for specified bridge. 2 Subnet Mask Enter: [7] [1] [6] 0 255.255.255.0 The Subnet Mask for bridge #0 is updated to 255.255.255.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Update NMS IP Address 9-5 -------------------------------------------------------Bridge: 0 Default NMS: 100.0.0.92 Bridge: 1 Default NMS: 100.0.2.93 -------------------------------------------------------- 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.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 10 MANAGING SYSTEM FUNCTIONS This chapter contains detailed descriptions of common management tasks for the system functions of the 7600 Card.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 10-2 CHAPTER 10: MANAGING SYSTEM FUNCTIONS Q Update Write-access Password Q Update Admin-access Password Manage event messages Q Enable/Disable Event Messages Resetting system Q Display Software Version Reset and Reboot Displays the current software version, revision number and date of implementation.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Display Software Download Status Display Software Download Status 10-3 Display the status of the last TFTP software download. Table 10-2 Task Actions Menu Sequence [1] system [9] load [1] display Enter Result None Status of last TFTP software download is displayed. 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.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 10-4 CHAPTER 10: MANAGING SYSTEM FUNCTIONS 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 may be loaded without this step. Table 10-4 Task Actions Menu Sequence [1] system [9] load [3] local Enter Result None System software is erased from flash.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM 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 19200. 12 Reset the unit.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 10-6 CHAPTER 10: MANAGING SYSTEM FUNCTIONS --------------------------------------------------------Context No. 1 Configuration *** *** *** *** *** *** *** *** FE FE FE FE Utopia ZipChip : Hermon : TM Port #1 : Port #2 : Port #3 : Port #4 : - Slave, TRAM - 256 K, CRAM - 512 K type ZC2+ ver 3.3 : ver 1.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM 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-andForward Mode Set the desired store-and-forward mode. The mode is saved in flash.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 10-8 CHAPTER 10: MANAGING SYSTEM FUNCTIONS 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 [1] system [3] update [8] timeout [1] info Enter Result None The software and hardware timeout delays are displayed.
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM 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. Disable SW bdcats The number of times the software closed broadcasts from going to it, due to a heavy load.
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abtthgde.book Page 11 Tuesday, June 23, 1998 10:29 AM Display Timeout Delays 10-11 Figure 10-2 Timeout Parameters Display Display Timeout Delays Display the software and hardware timeout delays. Table 10-10 Task Actions Menu Sequence [1] system [3] update [8] timeout [2] display Enter Result None The software and hardware timeout delays are displayed.
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abtthgde.book Page 12 Tuesday, June 23, 1998 10:29 AM 10-12 CHAPTER 10: MANAGING SYSTEM FUNCTIONS 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.
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abtthgde.book Page 13 Tuesday, June 23, 1998 10:29 AM 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. Table 10-14 Task Actions Menu Sequence [1] system [6] password [1] read Enter Result 1 password The read-access password is updated. 2 confirmation Example Enter: [1] [6] [1] The following dialog is displayed. Note that the passwords themselves are not displayed.
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abtthgde.book Page 14 Tuesday, June 23, 1998 10:29 AM 10-14 CHAPTER 10: MANAGING SYSTEM FUNCTIONS 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 second time to confirm your entry. You will be prompted for the existing password before you enter the new password.
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abtthgde.book Page 15 Tuesday, June 23, 1998 10:29 AM Reset and Reboot 10-15 Table 10-17 Task Actions Menu Sequence [1] system [7] event Enter Result None Event messages are enabled/disabled. 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.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 11 ETHERNET LANS AND BRIDGES IN THE 7600 CARD This chapter provides basic concepts and information about the following topics and how they are implemented in the 7600 Card. Overview of Ethernet Q Overview of Ethernet Q Fast Ethernet Q Transparent Bridges Q Spanning Tree Protocol Q Bridged-LAN Environments and vLANs An Ethernet is a CSMA/CD (Carrier Sense, Multiple Access with Collision Detection) LAN.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 11-2 CHAPTER 11: ETHERNET LANS AND BRIDGES IN THE 7600 CARD 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 parameters are increased by a factor of 10. In addition, it supports a full duplex mode as described below.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Fast Ethernet Q 11-3 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.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 11-4 CHAPTER 11: ETHERNET LANS AND BRIDGES IN THE 7600 CARD 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.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Fast Ethernet Ports 11-5 Table 11-2 Cable Support by Transceiver Type Fast Ethernet Ports Transceiver type Cable type 100BASE-FX 62.5/125 µm multi-mode fiber Number of pairs (fibers) 2 Notes Same optics as FDDI, 2-km link span 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.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 11-6 CHAPTER 11: ETHERNET LANS AND BRIDGES IN THE 7600 CARD 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 support more stations and a greater amount of traffic than can a simple LAN and, at the same time, it eliminates the cable length restriction between stations.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 11-8 CHAPTER 11: ETHERNET LANS AND BRIDGES IN THE 7600 CARD Static Addresses Defining permanency of 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 may want to maintain a station that transmits so infrequently that it would be aged-out by the aging mechanism.
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 10 Tuesday, June 23, 1998 10:29 AM 11-10 CHAPTER 11: ETHERNET LANS AND BRIDGES IN THE 7600 CARD 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 root port and any of its ports (LANs) on which it is the designated bridge to be in the spanning tree.
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abtthgde.book Page 11 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 12 Tuesday, June 23, 1998 10:29 AM 11-12 CHAPTER 11: ETHERNET LANS AND BRIDGES IN THE 7600 CARD 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 environment that is to operate in the 7600 Card.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 12-2 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Virtual Channels Virtual Channels 12-3 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.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 12-4 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS Q Switched Virtual Channels Point-to-point and point-to-multipoint connections 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 devices can exchange connection characteristics when establishing connections. These connections remain active for as long as the application demands.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM LAN Emulation Overview ATM Address Registration LAN Emulation Overview Emulated LAN Components 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 12-5 In order to establish an ATM connection at the UNI, both the user and the network must know the ATM addresses which are in effect at that UNI.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 12-6 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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 emulated LAN can operate on the same ATM network.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Emulated LAN Connections Q 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 Configuration Server (LECS) Emulated LAN Connections The LECS assigns individual LAN Emulation clients to different emulated LANs. When a LEC initializes, it establishes connection to the LECS.
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abtthgde.book Page 8 Tuesday, June 23, 1998 10:29 AM 12-8 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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 LECs and between a LEC and the BUS. Unicast data is normally sent from one LEC to another LEC by data-direct VCCs.
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abtthgde.book Page 9 Tuesday, June 23, 1998 10:29 AM 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 “Display Current LEC Configuration” on page 8-4).
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abtthgde.book Page 10 Tuesday, June 23, 1998 10:29 AM 12-10 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS Table 12-3 LEC Configuration and Status Information (continued) ATM Address ATM address of the LES provided by the LECS during the configuration phase or manually assigned using the LES address option of the LE configuration menu or in Fast Setup. Control-direct VCC VPI/VCI values of the control-direct VCC originated by the LEC to the LES.
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abtthgde.book Page 11 Tuesday, June 23, 1998 10:29 AM 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 called ZipChip. Using a technique called cell switching, all data is converted to standard sized cells.
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abtthgde.book Page 12 Tuesday, June 23, 1998 10:29 AM 12-12 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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) is established and maintained in the bridge. This FDB combines two tables.
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abtthgde.book Page 13 Tuesday, June 23, 1998 10:29 AM 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 directly into the FDB so that a destination MAC address can be immediately associated with the right VCC).
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abtthgde.book Page 14 Tuesday, June 23, 1998 10:29 AM 12-14 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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 way the entry was originally obtained and if the topology-flag is set.
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abtthgde.book Page 15 Tuesday, June 23, 1998 10:29 AM 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 destination is forwarded via that VCC.
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abtthgde.book Page 16 Tuesday, June 23, 1998 10:29 AM 12-16 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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, switching between the two VCC paths during transmission can cause the frames to be received out-of-order at the destination LEC.
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abtthgde.book Page 17 Tuesday, June 23, 1998 10:29 AM Virtual LANs Overview 12-17 Table 12-6 LEC Operational Parameters (continued) Parameter Description VCC-timeout An LEC should release any Data-direct VCC None specified 20 minutes that has not been used to transmit or receive any data frames for the length of the VCC timeout period. This parameter is only meaningful for SVC Data-direct VCCs.
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abtthgde.book Page 18 Tuesday, June 23, 1998 10:29 AM 12-18 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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 reconfigured - all without changing cabling or adding equipment.
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abtthgde.book Page 19 Tuesday, June 23, 1998 10:29 AM 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. Figure 12-5 shows how an ELAN is embedded in a vLAN.
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abtthgde.book Page 20 Tuesday, June 23, 1998 10:29 AM 12-20 CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS 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.
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abtthgde.book Page 21 Tuesday, June 23, 1998 10:29 AM Virtual LANs in the 7600 Card 12-21 Emulated LAN LES2 BUS2 CELLplex 7000 chassis LEC2 LEC3 CELLplex 7000 chassis 7600 modules Marketing 7600 modules Virtual LAN Marketing 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.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 13 TRAFFIC MANAGEMENT IN THE ATM NETWORK 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 Service categories Q Overview of the concepts and operation of Traffic Management Q How Traffic Management is implemented within the 7600 Card ATM technology is intended to support a wide variety of services and applications.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 13-2 CHAPTER 13: TRAFFIC MANAGEMENT IN THE ATM NETWORK 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 subject to a local policy in individual switches and end-systems. The UBR service category is intended for non-real-time applications, i.e.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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, the destination will update the backward RM-cells based on this congestion information. Q Generate backward RM-cells.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 13-4 CHAPTER 13: TRAFFIC MANAGEMENT IN THE ATM NETWORK 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. In this field the source end station indicates the rate at which it would like to transmit.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM Traffic Rates Shaping in the 7600 Card 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.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 13-6 CHAPTER 13: TRAFFIC MANAGEMENT IN THE ATM NETWORK 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 profiles. Depending on the information received in the returning RM cells the data transmission rate is indexed up or down in the table.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM Traffic Management in the Network Traffic Management in the Network 13-7 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 which a data flow and an RM-cell flow takes place as shown.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 14 DEVICE MANAGEMENT This chapter explains the applications enabling administrative and management functions in the 7600 Card. The following topics are discussed: User Interfaces and Protocols Q The user interfaces and protocols used Q Management types and connection Q Management within the 7600 Card The following applications provide user interfaces to the 7600 Card: Q 7600 Card administration console - Local Management (LM).
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 14-2 CHAPTER 14: DEVICE MANAGEMENT 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 workstation. There are two ways of managing the 7600 Card: Q In-band, using virtual terminal protocols or SNMP network manager protocol.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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 management requests are sent over a dedicated network. Out-of-band management is, however, a less convenient and more expensive way to access the 7600 Card.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 14-4 CHAPTER 14: DEVICE MANAGEMENT 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) Simple Network Management Protocol (SNMP) is the standard management protocol for multi-vendor IP networks.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM 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 7600 Card is standards-based, other SNMP-based applications, such as SunNet Manager or HP OpenView can be used.
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abtthgde.book Page 6 Tuesday, June 23, 1998 10:29 AM 14-6 CHAPTER 14: DEVICE MANAGEMENT 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-specific (private) MIBs supported by the 7600 Card can be accessed.
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abtthgde.book Page 7 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 15 SYSTEM MODES, ATTRIBUTES, AND TUNING This chapter explains the administrative and management functions in the 7600 Card including system modes, attributes and tuning. Forwarding Modes Cell Switching Data frames received from the Fast Ethernet ports pass through the ZipChip ASIC and are stored in the shared CRAM (Cell RAM) memory. The CRAM discards all received frames that are not required to be transmitted on any output (filtered frames).
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 15-2 CHAPTER 15: SYSTEM MODES, ATTRIBUTES, AND TUNING 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 Figure 15-1 for a comparison of Store-and-Forward and Cut-Through modes. Figure 15-1 Cut-through vs.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Console Passwords Console Passwords 15-3 The Administration Console requires passwords at the various access levels: read, write and admin. Admin access is required to change any of the passwords.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM 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.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM A-2 APPENDIX A: TECHNICAL SUPPORT 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 Ask3Com: 1 Log on to CompuServe. 2 Enter go threecom. 3 Press Enter to see the Ask3Com main menu.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Telephone Support Support from 3Com A-3 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 to find your authorized service provider. For the telephone numbers see Table A-3.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM A-4 APPENDIX A: TECHNICAL SUPPORT If you are unable to contact your network supplier, refer to Table A-4 on how to contact 3Com. Table A-4 Network Supplier Support Returning Products for Repair Country Baud Rate Telephone Number Taiwan up to 14400 baud (886) (2) 377 5838 (886) (2) 377 5840 U.K. up to 14400 baud (44) (1442) 278278 U.S.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM B TROUBLESHOOTING 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.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM B-2 APPENDIX B: TROUBLESHOOTING 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, contact your supplier.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM 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 Kontakte und verdecken Sie alle nicht benutzten Öffnungen.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM C 7600 FAST ETHERNET CARD SPECIFICATIONS This chapter contains the specifications of the 7600 Card. Physical Interfaces Height 1¾ in 4.5 cm Width 17 in 39.5 cm Depth 11 in 23.5 cm Weight ±3.3 lb ±1.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM Standards Compliance C-3 Standards Compliance Safety Q Agency Certifications: UL 1950, CSA 22.2 No.
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abtthgde.book Page 1 Tuesday, June 23, 1998 10:29 AM GLOSSARY 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 relay. ATM Adaptation Layer (AAL) A set of protocols that translate user higher-layer protocols into ATM format.
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abtthgde.book Page 2 Tuesday, June 23, 1998 10:29 AM 2 GLOSSARY cell CELLplex 7000 Switch 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. A high-performance, modular ATM switch. Cell Loss Priority (CLP) A bit in the ATM cell header indicating that if there is a need to discard a cell, the cell with the CLP bit marked is to be discarded.
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abtthgde.book Page 3 Tuesday, June 23, 1998 10:29 AM GLOSSARY 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 on the Internet.
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abtthgde.book Page 4 Tuesday, June 23, 1998 10:29 AM 4 GLOSSARY 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 protocol A one-way call or connection that has only one source, but may have many destinations. A set of rules for communicating between communication devices.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM GLOSSARY User Network Interface (UNI) Wide Area Network (WAN) 5 The UNI interconnects an ATM user with an ATM switch. Data communications network spanning very large geographical areas.
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abtthgde.book Page 5 Tuesday, June 23, 1998 10:29 AM INDEX 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 specifications C-2 Management Information Base C-2 supported MIBs 14-6 management protocols C-3 Maximum Transfer Unit, see MTU maximum-unknown-frame-count.
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