Multiple LLDP neighbours on port

[cre8toruk]

Hi All, keep seeing the below on our edge switch.

2147182840 2021-Aug-25 11:46:18 Warning %NT_GREEN-W-EeeLldpMultiNeighbours: Multiple LLDP neighbours on port gi3/0/26 - EEE operational state is FALSE
2147182841 2021-Aug-25 11:46:18 Warning %NT_GREEN-W-EeeLldpSingleNeighbour: Single LLDP neighbour on port gi3/0/26 - EEE operational state can be TRUE

Luckily I've tracked it down to my work bench where I have an 8 port hub / switch plugged into the access port.

I've read that I can set the port to be a trunk port but if I do that then Iose connectivity with the PC's connected to the hub / switch since I can't make the other end a trunk port (as far as I can tell).

Should I simply ignore it ?

thanks in advance.

[Giuseppe Larosa]

Hello @cre8toruk ,

you have an hub or dumb switch connected to that port so that is the reason for the Cisco switch to see multiple LLDP neighbors out of the port.

I think the following message

>> EEE operational state is FALSE

just says that the Cisco switch is not going to deliver POE on the port because it has seen multiple LLDP neighbors and this is correct.

So yes you can ignore these messages and you need to keep the port in access mode ( 802.1Q adds 4 bytes and the hub will drop baby giants frames like 1500 IP + 18 ethernet overhead +4 802.1Q overhead = 1522 bytes not being VLAN aware).

Hope to help

Giuseppe