3850 stack member addition.

[eagles-nest]

Hi

Am I overlooking something when I try to add a new member to a 3850 stack ?  I added a 4th member to an existing stack and the whole stack rebooted.  The new member was there once the stack came back online but I didn't expect the whole stack outage.

The only documentation I can find seems to suggest an additional member can be added transparently.  Do I need to add a switch provision command prior to adding the switch ?

Thanks, Stuart.                  

[Leo Laohoo · Accepted solution]

 I added a 4th member to an existing stack and the whole stack rebooted.

This is a normal behaviour if the new stack switch was POWERED ON when you connected the cable. 

When you add a new stack member to an exisiting stack, bear in mind that the new stack member must be POWERED OFF before connecting the stacking cables. 

[eagles-nest]

Ah, of course. 

I've done this tons of times on 3750's and totally forgot to leave this new 3850 off until cabled up.  I think old age is catching up with me.

Thanks Leo.

[Leo Laohoo]

Thanks for taking the time to rate our posts, Stuart.