Hi,
perhaps someone might have an idea to push me in the right direction.
On each of my Cisco SG350x switch stacks, all active ports of one particular VLAN are blinking rapidly in unison, first thing that comes to mind is a loop or a storm.
But i don't have any performance problems, STP is not blocking ports nor do i see anything suspicious in the switch logs.
Wireshark shows a lot of ARP request, but we're talking 1-2 per second, although a lot of ARP request are asking repeatedly for the same IP without getting an answer; but that doesn't seem wrong, specially since the request are coming from domain controllers and nagios.
No large multi or broadcasts either and it is definitely not a Unicast storm (since i already experienced one of those, do to a STP missconfiguration from an MSP).
Re-checked all LACP LAGs and bondings, all seem fine.
Interfaces usage is also low.
No error counters either.
I see myself left with to things to try:
Enable loopback control, and i'm not sure if this will break something
Unplugg cables one by one, until it goes away
Did someone had a similar experience, could the LED indication be normal on SG350 series?
Any help is much appreciated.
No comments:
Post a Comment