I got a loop in my network which causes packet loss and high CPU usage on my switch.
I get error messages on my distribution switch
%SPANTREE-2-LOOPGUARD_BLOCK: Loop guard blocking port port-channel1 on vlan 832
%SPANTREE-2-LOOPGUARD_UNBLOCK: Loop guard unblocking port port-channel1 on vlan 832
This happened about everything 10 minutes.
Please advice how I can find the device causing the loop
I captured packets with wireshark but don’t know how to find loop