SUMMARY STEPS
1. enable
2. configure terminal
3. stack-mac persistent timer [0 | time-value]
4. end
5. copy running-config startup-config
DETAILED STEPS
PurposeCommand or Action
Enables privileged EXEC mode.enable
Step 1
Example:
• Enter your password if prompted.
Device> enable
Enters global configuration mode.configure terminal
Example:
Step 2
Device# configure terminal
Enables a time delay after a stack-active switch change
before the stack MAC address changes to that of the new
stack-mac persistent timer [0 | time-value]
Example:
Step 3
ac. If the previous active switch rejoins the stack during
Device(config)# stack-mac persistent timer 7
this period, the stack uses that MAC address as the stack
MAC address.
You can configure the time period as 0 to 60 minutes.
• Enter the command with no value to set the default
delay of approximately 4 minutes. We recommend
that you always enter a value.
If the command is entered without a value, the time
delay appears in the running-config file with an explicit
timer value of 4 minutes.
• Enter 0 to continue using the MAC address of the
current active switch indefinitely.
The stack MAC address of the previous active switch
is used until you enter the no stack-mac persistent
timer command, which immediately changes the stack
MAC address to that of the current active switch.
• Enter a time-value from 1 to 60 minutes to configure
the time period before the stack MAC address changes
to the new active switch.
The stack MAC address of the previous active switch
is used until the configured time period expires or until
Managing Switch Stacks
13
Managing Switch Stacks
Enabling the Persistent MAC Address Feature
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