Persistent Mac Address - Fujitsu PRIMERGY BX900 User Manual

6.8

Persistent MAC Address

The switch stack MAC address is determined by the MAC address of the stack master. When a stack
master is removed from the stack and a new stack master takes over, the default is for the MAC address
of the previous stack master will be still the MAC address of the new stack. That is, the stack MAC
address never changes to the new stack master MAC address. However, you could disable the
persistent MAC address feature to allow a time delay to change the stack MAC address to that of the
new stack master. During this time period, if the previous stack master rejoins the stack, the stack
continues to use that MAC address as the stack MAC address, even if the switch is now a stack
member.
The time period should be the range from 0 to 60 minutes. If you enter the command without value, the
default delay is 0 and the stack MAC address will never changes to the new one. If you enter the
command with a value of 1 to 60 minutes, the stack MAC address of the previous stack master is used
until the configured time expires or until you enter no stack-mac persistent timer command. If the
previous stack master does not rejoin the stack during this time period, the stack uses the MAC address
of the new stack master as the stack MAC address.
If the entire stack reloads, it comes up with the MAC address of the current stack master as the stack
MAC address.
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