Diag prbstest – Brocade Network OS Command Reference v4.1.0 User Manual

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Network OS Command Reference

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diag prbstest

Runs the Pseudo Random Bit Sequence (PRBS) test on a given slot to verify the back end
connections between the line card (LC) and switch fabric module (SFM). This test is not supported
on fixed-configuration switches, nor can it be run on a per-port basis.

Synopsis

diag prbstest slot {L1 | L2 | S1 | S2 …} pattern {pattern}

Operands

slot slot

Specifies the slot ID, from 1 through 6. This test is applicable for slot-based
systems only.

pattern pattern

Specifies the PRBS pattern, from 1 through 8. Valid values are PRBS7,
PRBS23, and PRBS31. The default is PRBS7, which is the least stressful
pattern, whereas PRBS31 is the most stressful pattern.

Defaults

The default PRBS pattern is PRBS7.

Command Modes

Privileged EXEC mode (with the chassis disabled, in offline mode)

Description

Use this command to verify the back end connections between LC and SFM. This command also
verifies the internal blade connections when executed in LC.

Usage Guidelines

During abnormal termination, the system might be in unusable state. Perform reload to reboot the
chassis or switch to recover.

In slot-based systems, the blade under test undergoes a reset and/or a reinitialization sequence
as part of the cleanup process.

CAUTION

This is a disruptive command. You must disable the chassis and switch before running the test. In
addition, you must reload or fastboot the switch or chassis after the test has completed running.

Examples

In slot-based switches:

switch# diag prbstest slot L6 pattern PRBS7

% Info: This test should be run to completion. Please do not abort while it is

executing.

Running prbstest...

Initializing ASICs & Ports...

Performing Link Training from L6 to S1

Performing Link Training from L6 to S2

Performing Link Training from L6 to S3

Performing Link Training from L6 to S4

Performing Link Training from L6 to S5

<..cut..>

slot S6 ASIC 1 Port 15 Tap0: 0x08 Tap1: 0x33 Tap2: 0x20

Performing Link Testing from L6 to S1

Performing Link Testing from L6 to S2

Performing Link Testing from L6 to S3

Performing Link Testing from L6 to S4

Performing Link Testing from L6 to S5

Performing Link Testing from L6 to S6

prbsTest on slot L6 PASSED