12-07-2021 12:29 PM
WS-C3850-12X48U 16.09.06
Getting below errors. Before changing out the stacking cable the up/down between the two switches would eventually drop the Access ports on the switch. how do I determine which switches stack port is bad?
13:35:47.639: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
13:35:47.640: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
13:36:26.416: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
13:36:26.417: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is up
13:40:46.392: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
13:40:46.423: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is up
13:41:45.716: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
13:41:46.228: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
13:41:47.566: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
13:41:47.925: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
13:44:06.839: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
13:44:06.839: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is up
13:44:50.682: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
13:44:50.683: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
12-07-2021 12:58 PM
13:35:47.640: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
13:36:26.416: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
Follow the cable from switch-1 port 1 to switch-2 port 2
Also, Issue the command below to make sure you are disconnecting the right cable.
sh switch stack-ports
HTH
12-07-2021 01:01 PM
show switch stack-ports summary gives more info.
If I disconnect the cable from 1/1 to 2/2 the up/down stops.
It's the port I just to know which switch.
12-07-2021 01:49 PM
Just follow the cable from switch-1 to switch-2. How many switches are in the stack?
HTH
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