Configuration Guide User guide

FastIron Configuration Guide 323
53-1002494-02
Image mismatches
Recovering from a stack unit mismatch
When a configuration mismatch occurs, the Active Controller logs and displays a configuration
mismatch message, and puts the mismatched unit into a non-operational state. In the following
example, the original stack unit 3 has failed, and a replacement unit has been installed that does
not match the configuration of the original unit. You should see the following message.
Warning! put stack unit 3 to non-operational reason= config mismatch
Complete the following steps to recover from a configuration or image mismatch.
1. Enter the show stack command to see the status of the stack, and a show running-config
command to see the configurations of the stack units.
Brocade# show stack
alone: standalone, D: dynamic config, S: static config
ID Type Role Mac Address Pri State Comment
1 FCX624 active 0012.f2eb.a900 128 local Ready
2 FCX648 member 00f0.424f.4243 0 remote Ready
3 FCX624 standby 00e0.5201.0100 0 remote NON-OP: config mismatch
Brocade# show running config
stack unit 1
module 1 fcx-24-port-copper-base-module
module 3 fcx-cx4-1-port-10g-module
module 4 fcx-xfp-1-port-10g-module
priority 128
stack unit 2
module 1 fcx-24-port-management-module
module 3 fcx-xfp-1-port-10g-module
stack unit 3
module 1 fcx-48-port-copper-base-module
module 2 fcx-cx4-1-port-10g-module
module 3 fcx-cx4-1-port-10g-module
stack enable
2. To resolve the mismatch, you must remove the configuration for stack unit 3. Use the following
command in configuration mode:
Brocade(config)# no stack unit 3
This removes all configuration related to Unit 3.
If you are unable to remove the configuration because of a multi-slot trunk configuration, you
must first manually remove the multi-slot trunk configuration.
3. When you have successfully deleted the mismatched stack unit, a re-election is triggered, and
the Active Controller learns the correct module configuration from the Standby Controller or
from other stack members. No reload is required.
Complete the following steps to recover from an image mismatch.
1. Use the copy flash flash command to replace a mis-matched image with the correct image.
Refer to “Copying the flash image to a stack unit from the Active Controller” on page 283.
2. Reset the unit. After the reset, the unit will contain the new image and the mis-match condition
will not exist. To verify, use the show stack command.