Reference Guide

Brocade Fabric OS Command Reference 1145

53-1004112-02

wwnRecover

Utility to recover mismatch of data in WWN card. Errors may be due to corruption, defect, or other causes.

Synopsis wwnrecover

Description Use this command to recover one or both WWN cards from errors detected by the audit routine. The audit routine

is triggered upon first boot up of the system, periodically every 24 hours thereafter, and upon detection of insertion

of either of the WWN card. The audit routine performs consistency checks on each of the following sections of data

maintained in the WWN cards for use by the corresponding system component:

• License ID data sections within the same WWN card

• IP address data sections across the two WWN cards

• DCE data sections across the two WWN cards

• License ID data sections across the two WWN cards

• Chassis configuration data sections across the two WWN cards

• Chassis serial and part number sections across the two WWN cards

Error resulting from a mismatch in data may be encountered on one or more sections. The recovery mechanism

may vary depending on the nature of the error encountered and is also based on the data section. The wwnrecover

operation presents a summary of all the errors detected and prompts you through the recovery process

interactively for all data sections. For each data section, you will be prompted with an option to recover WWN1 card

data from WWN2 card data or vice-versa or to exit without recovering the corresponding data section. For

example, if WWN2 is replaced by a minimally programmed factory replacement card, WWN recovery

recommends to recover most of the data sections on WWN2 from WWN1. However, in a rare case where a bit

corruption occurs in one data section on one card and another bit corruption in a different data section on the other

card, the recovery for each of the affected data sections will be different. WWN recovery is not possible if the

license ID differs on both WWN cards.

In the event of any of the following issues with WWN card operations, the system logs the corresponding RASlog

message:

• Mismatch between the two WWN cards detected by the audit routine (EM-1220 message).

• Insertion of either of the two WWN cards detected by the system (EM-1221 message).

• Access failure by the audit routine during read/write to either of the WWN cards (EM-1222 message).

Notes The execution of this command is subject to Virtual Fabric restrictions that may be in place. Refer to "Using Fabric

OS Commands" and "Command Availability" for details.

Operands None

Examples To perform WWN recovery (the following example shows that no WWN errors were detected):

switch:admin> wwnrecover

No WWN Error is detected. Exiting.