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QUICK START GUIDE FOR THE BCM Diagnostic Shell 07/25/2004 7F, No.25, Puding Road · Hsin-Chu City · Taiwan 300 · Phone: 886-3-5011000 · FAX: 886-3-5011099

Quick Start Guide 07/25/04 Revision History BCM Command Line Interpreter REVISION 1.0 DATE 07/25/04 CHANGE DESCRIPTION Initial release Broadcom Corporation Taiwan 7F, No.25, Puding Road Hsin-Chu City, Taiwan 300 ©Copyright 2004 by Broadcom Corporation Taiwan All rights reserved Broadcom Corporation Taiwan

Quick Start Guide 07/25/04 BCM Command Line Interpreter TABLE OF CONTENTS 4 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 1 OVERVIEW ........................................................................................................................... 6 PREPARE GETTING YOUR FEET WET ............................................................................ 6 2 3 LOW-LEVEL COMMANDS................................................................................................. 9 Register Access Commands.................................................................................. 10 3.1 Memory Access commands .................................................................................. 17 3.2 3.3 Accessing PHY Registers ..................................................................................... 24 Miscellaneous ....................................................................................................... 25 3.4 Interrupts ....................................................................................................... 25 Counters ........................................................................................................ 26 System Memory............................................................................................ 27 PCI Bus ......................................................................................................... 27 I2C Bus .......................................................................................................... 27 PORTS AND LINKS............................................................................................................ 27 4.1 PortStat.................................................................................................................. 28 PORT .................................................................................................................... 29 4.2 4.3 LINKscan.............................................................................................................. 29 5 HIGH-LEVEL COMMANDS .............................................................................................. 30 VLAN Management.............................................................................................. 30 Concluding Remarks of VLAN management............................................... 32 L2 Commands....................................................................................................... 32 L3 Commands....................................................................................................... 34 The ABC of L3 Switching ............................................................................ 34 L3 Example................................................................................................... 35 Port Mirroring ....................................................................................................... 37 Filtering................................................................................................................. 37 Spanning Tree Group Management ...................................................................... 38 6 ADVANCED FEATURES................................................................................................... 38 Sending and Receiving Packets ............................................................................ 38 6.1 In the case when no packet generator handy, the commands introduced in this section helps. ............................................................................................................................................... 38 Packet Transmission ..................................................................................... 38 5.4 5.5 5.6 5.1 5.2 5.3 5.1.1 5.3.1 5.3.2 6.1.1 Broadcom Corporation Taiwan

Quick Start Guide 07/25/04 BCM Command Line Interpreter 6.1.2 Packet Receiving........................................................................................... 39 Debugging............................................................................................................. 39 Configuration Management .................................................................................. 40 BCM Shell Variables ............................................................................................ 41 Diagnostic Tests.................................................................................................... 42 6.2 6.3 6.4 6.5 Broadcom Corporation Taiwan

Quick Start Guide 07/25/04 BCM Command Line Interpreter Broadcom Corporation Taiwan

Quick Start Guide 07/25/04 1 OVERVIEW BCM Command Line Interpreter The BCM Diagnostic Shell is a general command line interpreter (CLI) that provides precise control of reference platforms in which Broadcom switch chips are embedded. The shell supports all Broadcom switch chips in a singe image and provides direct access to all registers, memories and most high-level API features. Also, since both interactive and non-interactive mode is supported by the shell, it can be embedded into a customer’s design to provide additional diagnostics. The purpose of this quick start guide is to provide supplementary information in addition to those adequate explanations accompany each CLI command. Note that the content presented herein is based on Broadcom SDK 4.2.3. The rest of this guide is organized as follows. In Section 2, we introduce typical interactive behavior of the BCM shell. In Section3, Some low-level commands that provide direct access to the registers, memories, etc. are introduced. Commands relate to ports and links are given in Section 4. High-level commands deal with VLAN, spanning tree, etc., are given in Section 5. Finally in Section 6, some advanced features of BCM shell are presented. 2 PREPARE GETTING YOUR FEET WET In this section, typical interactive shell behavior is introduced. One can access the built-in help by typing ‘HELP’, or ‘?’ after the shell prompt ‘BCM.0>’. The keyword ‘HELP’ and symbol ‘?’ are interchangeable in the BCM shell. For example, to access the built-in help for a specific command, one can type one of the following commands: ‘HELP ’, ‘? ’, ‘ HELP’ or ‘ ?’ after the shell prompt ‘BCM.0>’. Note that all CLI command names and parameter names are case-insensitive. Thus, ‘HELP ’ and ‘help ’ are exactly the same. The capitals appear on each command stand for the abbreviation for the command. For instance, commands ‘Listreg’ and ‘PortStat’ can be abbreviated as ‘L’ and ‘PS’, respectively. (Note that the case does not matter.) In the shell, one can use “” or \ to enter special symbol, and ; to put several commands on the same command line. Also, CTRL-C stops the execution of a current command and CTRL-\ reboots the system (VxWorks only). Broadcom Corporation Taiwan

BCM Command Line Interpreter Quick Start Guide 07/25/04 A typical system may consist of one or more Broadcom switch chips. The first chip in the system is named as unit 0; analogously, the second chip in the system is named as the Unit 1. Initially, the shell prompt is ‘BCM.0>’ which represent that the chip under consideration currently is the Unit 0. One can type ‘1:’ after the shell prompt to change the current working chip from the Unit 0 to 1. The shell prompt after issuing command ‘1:’ will change to ‘BCM.1>’ to reflect the transition. For example, one can type ‘1:ps’ after ‘BCM.0>’ to check the port status on the Unit 1. (Note that ps is a abbreviated form of command PortStat.) For another example, when issue command ‘1:rc’ after ‘BCM.0>’, Unit 1 in the system will then be re-initialized (whereas command ‘*:rc’ will cause all units in the system being re-initialized). Other frequent-used commands are: • VER: Display current software version. • SHOW unit: Display chips in the system. • SHOW params: Display current chip configuration from driver’s viewpoints. • SHOW features: Display current chip’s feature from driver’s viewpoints. Figure 1 demonstrates all the contents mentioned in this section for readers’ convenience. Broadcom Corporation Taiwan

Quick Start Guide 07/25/04 BCM Command Line Interpreter Figure 1. Example of general CLI commands Broadcom Corporation Taiwan

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