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Cisco WS-C3850-48T, Problem with two switches in stack

Hi everyone, 

 

I have a problem with two Cisco WS-C3850-48T switches that are connected via stack cables. Switches were running fine before, the problem occurred after a power outage on the site. 

 

Once power was back, switch number 2 booted without any problems, and I was able to check the switch. 

Switch number 1 was stuck in Switch mode, I managed to recover the switch and now it's up and running. 

 

Both switches are running fine in standalone, and once I connect them with stack cables Switch number 1 reloads and they end up in a ready state:

 

Role Mac Address Priority Version State
------------------------------------------------------------
1 Member 2401.c722.8600 1 V01 Ready
*2 Active 2401.c722.7d00 15 V01 Ready

 

It stays like this for maybe a minute and after that, this happens:

 

Switch# Role Mac Address Priority Version State
------------------------------------------------------------
1 Standby 2401.c722.8600 1 V01 HA sync in progress
*2 Active 2401.c722.7d00 15 V01 Ready

 

*Dec 7 08:13:48.657 EST: %STACKMGR-1-STANDBY_ELECTED: 2 stack-mgr: Switch 1 has been elected STANDBY.

*Dec 7 08:13:48.726 EST: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_FOUND(4))

*Dec 7 08:13:48.726 EST: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_FOUND(4))

*Dec 7 08:13:48.726 EST: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_REDUNDANCY_STATE_CHANGE(5))

*Dec 7 08:13:48.726 EST: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_REDU

 

I also get this log:

 

*Dec 7 08:14:13.564 EST: %ISSU-3-PEER_IMAGE_INCOMPATIBLE: Peer image (CAT3K_CAA-UNIVERSALK9-M), version (03.02.00SE) on peer uid (1) is incompatible
*Dec 7 08:14:13.565 EST: %ISSU-3-PEER_IMAGE_INCOMPATIBLE: Peer image (CAT3K_CAA-UNIVERSALK9-M), version (03.02.00SE) on peer uid (1) is incompatible
*Dec 7 08:14:13.885 EST: %PLATFORM_HA-6-REDUNDANCY_MODE: ACTIVE supervisor initializing for SSO mode

 

I checked both switches and they have same IOS version, also I tried to use this command on the Switch number 2:

 

redundancy config-sync ignore mismatched-commands

 

But I got a message that the switch is not in a duplex mode...

 

What do you guys think about this, do you have a solution to the problem?

 

P.S. I attached the file with some important information that you can use in order to help me resolve this issue. 

 

Thank you in advance, 

 

Alex 

 

4 Replies 4

Georg Pauwen
VIP Master VIP Master
VIP Master

Hello Alex,

 

could be a bug. Try and upgrade to release Denali-16.3.7 MD...

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend
Post the complete output to the command "sh version".
Wow. 3.2.0. This is THE original IOS-XE version the first generation of 3850 came with.