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i have 4 cisco 3850's set up in a stack 1-master 2-secondary 3-member 4-member, however when i unplug-replug a stacking cable both member switches restart, 1 and 2 are unaffected.

Posted on 2014-10-29
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Last Modified: 2015-03-28
stacking is set as

1-2
2-3
3-4
4-1

when a cable is unplugged the switches continue to work fine, however when the cable is plugged back in 3 and 4 restart.
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Question by:msbccs
6 Comments
 
LVL 17

Expert Comment

by:Spartan_1337
ID: 40410524
Do they show as members of the stack?
If you run: show switch

What does it show as their current state?
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LVL 6

Expert Comment

by:Matt
ID: 40410590
Do you have any record in log?

show logg
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Author Comment

by:msbccs
ID: 40414082
Hi, Thanks for the replies guys. We will need to go to the client site and get this info. as the site is new and still being built out with no comms. lines. Will let you know as soon as I have the details requested.

Regards
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LVL 51

Expert Comment

by:Netman66
ID: 40651828
Make sure you have set the priority for master and backup master manually to avoid an election with one of the members to take over either of those roles unintentionally.
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Accepted Solution

by:
msbccs earned 0 total points
ID: 40681956
Hi All,

Sorry - poor form, left this to go stale. Basically ended up re configuring the who stack - problem persisted. Transpired one of the stacking cables was bad. It was seen, as 50cm in length etc.,  seemed to work fine, but intermittently just went offline. Swapped this out - all good.

Thanks for the comments/assitance above

Regards
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Author Closing Comment

by:msbccs
ID: 40693360
Had to accept our own answer as it was such a weird hardware issue. All other contributors gave valued input, so thank you.
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