Brocade FastIron Ethernet Switch Stacking Configuration Guide - Manual (Page 93)

Verifying Auto Image Copy
Use the show stack detail command to verify if there are any units in the mismatch state after the
stack is formed.
Memory allocation failure
A memory allocation (malloc) failure occurs when the active controller does not have enough memory to
run a stack unit. This failure may occur if you configure large numbers (for example, 4 K of VLANs, or
STP instances (for example, 255) in the router image. This message means that the active controller is
low on memory after allocating these resources and does not have enough remaining memory to
control a stack member. You can correct this by reducing the number of VLANs or STP instances.
NOTE
After you make configuration changes such as number of VLANs or STP instances, you must reset the
stack.
Recovering from a stack unit configuration 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 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.
device# show stack
alone: standalone, D: dynamic config, S: static config
ID Type Role MAC Address Pri State Comment
1 FCX624 active 0000.00eb.a900 128 local Ready
2 FCX648 member 0000.004f.4243 0 remote Ready
3 FCX624 standby 0000.0001.0100 0 remote NON-OP:config mismatch
device# 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:
device(config)# no stack unit 3
This removes all configuration related to Unit 3.
Verifying Auto Image Copy
FastIron Ethernet Switch Stacking Configuration Guide 91
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