LLDP and loosing Tagged VLAN

[Kevin5698]

Hello everyone

We have a switch (SG200-50) that has 4 different vlans (1 untagged and 3 tagged). The thing is that a couple of times per week, the switch removes the 3 tagged one from the port configuration. This has the effect of removing the VoIP vlan, rending our phone useless.

When I look into the logs, I see this on the ports that are problematic :

"Warning    %NT_GREEN-W-EeeLldpMultiNeighbours: Multiple LLDP neighbours on port gi36 - EEE operational state is FALSE"

Can anyone help me out with this? I'm trying to find the solution, but I have no luck on the web. I don’t get why this is happening suddenly… We have the switch setup and working for a little less then 2 years now and we never had any problems before..

Thank you!

[Mark Malone]

Hi
maybe a solution in this thread looks similar to your alert you could try that see if it works
There is also a specific SMB section for these switches on this forum you may get a better response on
https://supportforums.cisco.com/t5/lan-switching-and-routing/problem-with-sg300-28p/td-p/2587171

[Kevin5698]

Thanks, I already saw this thread, but it didn't help.

I'll try to post in the SMB than. 

Once again, thank you

[Mark Malone]

it could be a firmware bug too so if you dont get a concrete answer i would take a chance and upgrade the firmware if nothing has changed in your end to cause this

[Kevin5698]

It's not because when we first encounter this problem, it's one of the first thing that we did (upgrade to the latest firmware)

Thanks!