I've just enabled logging of interface state changes on one of my campus switches and noticed one in particular is making state changes frequently, at least once an hour and more frequently, like this:
Jun 24 08:14:31: %LINK-SW1-3-UPDOWN: Interface GigabitEthernet1/8/21, changed state to down
Jun 24 08:14:32: %LINEPROTO-SW1-5-UPDOWN: Line protocol on Interface GigabitEthernet1/8/21, changed state to down
Jun 24 08:14:33: %LINK-SW1-3-UPDOWN: Interface GigabitEthernet1/8/21, changed state to up
Jun 24 08:14:34: %LINEPROTO-SW1-5-UPDOWN: Line protocol on Interface GigabitEthernet1/8/21, changed state to up
I discovered it connects to an EXI host but I know nothing about these. Is it normal for interfaces connected to EXI hosts to change a lot?
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