Intermittent Connectivity Issues with EXOS Stack – X460-48p Switches

[MurphMe]

Hi all, 

I’m reaching out regarding a set of EXOS switches (X460-48p) configured in a stack. We’ve been receiving frequent notifications indicating that the switches are going up and down several times a day.

I’ve reviewed the logs but haven’t found anything that clearly explains the issue. I’ve attached several logs in the hope that someone might spot something I’ve missed. I’ve also included a copy of the email notifications we’ve been receiving regarding the outages.

Any guidance or insight would be greatly appreciated. Please let me know if you need any additional information.

[jeronimo]

It would have been interesting knowing the timestamp of the message attached in the screenshot.

Also I wonder why you share a text message as a screenshot.

Also I think you have a problem with port 1054 and EDP neighbors appearing and disappearing all the time. I'd fix all that background noise first.

Also we don't know anything about topology. Is the mgmt station in the same VLAN as the switch with IP 10.19.0.4. (i.e. who exactly is not able to reach the switch)

I mean if you go at it systematically you'll figure it out...

[Ken_Applebaum · Accepted solution]

"SNMP Contact Lost" is not the same as the switch "going up/down". SNMP is not working, and your switch is probably reporting this to your console. If this is the case, it is most likely serving client devices, but you are receiving alarms that you would want to follow up on. If need be, open a ticket with GTAC for this issue.

Running the command "show switch" will provide you with the switch's "System UpTime", which will tell you if the switch is actually rebooting. 

[jeronimo]

Define "going down and up".