It seems that problems within 2 X670V in Datacenter Distribution layer which working in a stack caused a network disruption (EXOS V 126.96.36.199). we using mLAG as redundancy mechanism to core switch and to the connected server - no STP. Unfortunately the system log tell me nothing about that problem.
So i do not know where is should looking for the root cause. If maybe there is a problem with switch stacking or hardware or only a network loop occurs (because of server misconfiguring or maybe a fault within mLAG)???
Are there any suggestions how to setup switch logging (EMS) mor granular. That if the next time a network disruption occours the logging allow a more details view ??
Thanks for helpful advices.