Cisco CATALYST 2960 - Enabling Persistent MAC Address; The MAC address of the master determines the stack MAC address. When a master is removed from the stack and a new master takes over, the MAC address of the new master to become the new stack MAC address. However, you can set the persistent MAC address feature with a time delay before the stack MAC address changes. During this time period, if the previous master rejoins the stack, the stack continues to use that MAC address as the stack MAC address.

2-173
Catalyst 2960 Switch Command Reference
OL-8604-03
Chapter 2 Catalyst 2960 Switch Cisco IOS Commands
link state group
Examples This example shows how to configure the interfaces as upstream in group 2:
Switch# configure terminal
Switch(config)# interface range gigabitethernet0/11 - 14
Switch(config-if-range)# link state group 2 downstream
Switch(config-if-range)# end
Switch(config-if)# end
You can verify your settings by entering the show running-config privileged EXEC command.
Related Commands Command Description
link state track Enables a link-state group.
show link state group Displays the link-state group information.
show running-config Displays the current operating configuration. For syntax information, select
Cisco IOS Configuration Fundamentals Command Reference for
Release 12.2 > Cisco IOS File Management Commands > Configuration
File Commands.