02-13-2014 10:21 AM
On the S2500/3500 switches is there a command in either the cli or the web UI to show the identity (probably by the MAC address of the uplink port) of neighbor switches? I've tried a number of things: looking at the MAC address table, LLDP output, neighbor-devices output, but none of that shows me what's at the other end of a link. Any ideas?
Oyster River School District
02-13-2014 10:24 AM
Are you saying that the neighbor-devices output is empty for those ports or that command doesn't show you enough detail. The MAC address table will only show you MAC addresses. We can't do an OUI lookup to tell you the vendor of that MAC.
02-13-2014 11:15 AM
Is LLDP enabled on all the inter switch links?
A show LLDP neighbor should tell you...
Consulting Systems Engineer - ACCX, ACDX, ACMX
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02-13-2014 12:05 PM
Can you check & confirm if LLDP transmit & recive processing is enabled under the applied lldp-profile?
Verify configs at both at interface-group & interface level.
By default, if you haven't changed/touched any config w.r.t to LLDP, It show with 'show lldp neighbor' & 'show neighbor-devices'
02-14-2014 06:47 AM
Hi, Madani - as far as I can tell, the output from 'show lldp neighbor' shows only APs and phones - not the switchport at the other end of an uplink. If I specify 'show lldp neighbor interface gigabitethernet 2/1/1', which is an interface that I know to be an inter-switch link, it returns 'Number of neighbors: 0'. Perhaps that's because that interface is part of a port channel?
I don't really need to know the OUI because the connected switch is also an Aruba switch. I'm just trying to confirm (for documentation purposes) which switchports on each device connect to which switchports on the upstream/downstream device.
02-14-2014 06:53 AM
Hi, Vinay - please see my response to Madani's post.
Here's the lldp profile info from one of our switch stacks:
interface-profile lldp-profile "lldp-factory-initial"
02-14-2014 07:02 AM - edited 02-14-2014 07:04 AM
Send the actual "interface gigabitethernet...", "interface-group gigabitethernet..." and/or "interface port-channel..." config output that covers the switch to switch links and from both sides.