3 Replies Latest reply: Nov 28, 2019 4:26 AM by Martin RSS

    Stack Bridge ID and persistent MAC

    legnica69y

      not clear about usefulness for Persistence mac of the stack or not-persistent

        • 1. Re: Stack Bridge ID and persistent MAC
          Parvesh

          Remember - if persistent MAC address feature is enabled, there is an approximate 4-minute delay before the stack MAC address changes.

          • 2. Re: Stack Bridge ID and persistent MAC
            Parvesh

            During this time period, if the previous master rejoins the stack, the stack continues to use its MAC address as the stack MAC address, even if the switch is now a member and not a master. If the previous master does not rejoin the stack during this period, the stack takes the MAC address of the new stack master as the stack MAC address.

            • 3. Re: Stack Bridge ID and persistent MAC
              Martin

              Persistent MAC Address on the Switch Stack

               

               

              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 new stack master to immediately become the new stack MAC address.

              However, you can use the persistent MAC address feature to set a time delay before the stack MAC address changes. 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 and not a stack master. If the previous stack master does not rejoin the stack during this period, the switch stack takes the MAC address of the new stack master as the stack MAC address.

              You can also configure stack MAC persistence so that the stack MAC address never changes to the new master MAC address. 

               

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