![]() ![]() So Leo when you say it is correct that the secondary would reboot itself but the downtime depends on how the clients are connected I don't follow that ie. Sorry to resurrect such an old thread but I am refreshing my 3750 knowledge and the information given here seems slightly contradictory. The new 3850s use a new Stack that will not work with any 3750. Original series 3750 used StackWise and E/X series use StackWisePlus, which is better in several way although it will work with original StackWise (yielding some of its improvements). There a command to continue to use the original master's ARP or you can use HSRP which uses a virtual MAC. It will send a gratuitous ARP, but if a host doesn't recognize it, it will send its traffic to the MAC in its local ARP table. Normally a new master uses its own mac for any gateways. Some gotchas: If your backup doesn't have the same feature set as the original master, you may lose active features. 元 too, if you enable NSF in your routing protocol. On the surviving switches - normally L2 forwarding should be almost hitless. Another switch takes over as master without needing to reboot. In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.Īs also noted by Leo, losing the stack master doesn't create much downtime (if any). Usage of this posting's information is solely at reader's own risk. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. ![]() The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. ![]()
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