09-21-2018 12:23 PM - edited 03-08-2019 04:12 PM
Dear Support Team,
09-21-2018 12:58 PM
You having spanning tree loop in the network and you need to understand spanning tree how it works and how to mitigate,
Below some cheat for you to understand, more information can be found in cisco site.
http://packetlife.net/media/library/11/Spanning_Tree.pdf
09-21-2018 03:00 PM
Hello
Are all interconnects between these switches trunked?
Are all switchs running stp, if so what mode?
Do you have any kind of stp bpdu filtering or trunk portsfast applied on the interconnects?
Is the Core stack is the stp root if it isnt make it so?
Are you receiving any logging, is so what is it saying?
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