Brocade Fabric OS Troubleshooting and Diagnostics Guide v6.2.0 (53-1001187-01, April 2009)

34 Fabric OS Troubleshooting and Diagnostics Guide

53-1001187-01

Media-related issues

16:52:42.572 PORT Tx3 8 20 22000000,00000000,ffffffff,11020000

16:52:42.572 PORT Rx3 8 20 22000000,00000000,ffffffff,11020000

16:52:42.572 PORT Tx3 8 20 22000000,00000000,ffffffff,11030000

16:52:42.572 PORT Rx3 8 20 22000000,00000000,ffffffff,11030000

NOTE

See “Port log” on page 111 for overview information about portLogDump.

Media-related issues

This section provides procedures that help pinpoint any media-related issues, such as bad cables

and SFPs, in the fabric. The tests listed in Table 6 are a combination of structural and functional

tests that can be used to provide an overview of the hardware components and help identify

media-related issues.

• Structural tests perform basic testing of the switch circuit. If a structural test fails, replace the

main board or port blade.

• Functional tests verify the intended operational behavior of the switch by running frames

through ports or bypass circuitry.

The following procedures are for checking switch-specific components.

Testing a port’s external transmit and receive path

1. Connect to the switch and log in as admin.

2. Connect the port you want to test to any other switch port with the cable you want to test.

3. Enter the portLoopbackTest -lb_mode 2 command.

Testing a switch’s internal components

1. Connect to the switch and log in as admin.

2. Connect the port you want to test to any other switch port with the cable you want to test.

3. Enter the portLoopbackTest -lb_mode 5 command where 5 is the operand that causes the test

to run on the internal switch components (this is a partial list—see the Fabric OS Command

Reference for additional command information):

TABLE 6 Component test descriptions

Test name Operands Checks

portTest [-ports itemlist] [-iteration count]

[-userdelay time] [-timeout time]

[-pattern pattern] [-patsize size]

[-seed seed] [-listtype porttype]

Used to isolate problems to a single

replaceable element and isolate

problems to near-end terminal

equipment, far-end terminal

equipment, or transmission line.

Diagnostics can be executed every day

or on demand.

spinFab [-nmegs count] [-ports itemlist] [-setfail mode] Tests switch-to-switch ISL cabling and

trunk group operations.