MST Topology Changes

Post Reply
Posts: 2
Joined: 08 Jun 2016 07:23

MST Topology Changes

Post by oldsk00l » 27 Sep 2019 05:17


we have an Cisco2960s, 3750x and OS6450 mixed L2 network here. All switches are running mstp with same mstp config.
we often see STP Topology Changes on "show log swlog":

STP info Topology changed on VLAN/STP id 0

We would like to know the interface where the TC was received to find the root cause. (Like "show spanning-tree detail" on cisco)

Is there any command to identify the Port?
Or should we enable any advanced debug to see it in swlog?


Alcatel Unleashed Certified Guru
Alcatel Unleashed Certified Guru
Posts: 1363
Joined: 01 Jul 2008 10:51
Location: Germany

Re: MST Topology Changes

Post by silvio » 28 Sep 2019 12:27

in the newest releases (since ca. 1 year) you can see the source of the last tc-port with the command "show spantree cist". Before it was only possible with debug commands.

Post Reply

Return to “OmniSwitch 6450”