Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

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Per-Port LLDP Counters:

NumFramesRecvd: Shows the total number of valid, inbound LLDP advertisements received from any neighbor(s) on < port- list >. Where multiple neighbors are connected to a port through a hub, this value is the total number of LLDP advertisements received from all sources.

NumFramesSent: Shows the total number of LLDP advertisements sent from < port-list>.

NumFramesDiscarded: Shows the total number of inbound LLDP advertisements discarded by < port-list >. This can occur, for example, when a new neighbor is detected on the port, but the switch is already supporting the maximum number of neighbors. Refer to “Neighbor Maximum” on page 13-75.This can also be an indication of advertisement formatting problems in the neighbor device.

Frames Invalid: Shows the total number of invalid LLDP advertisements received on the port. An invalid advertisement can be caused by header formatting problems in the neighbor device.

TLVs Unrecognized: Shows the total number of LLDP TLVs received on a port with a type value in the reserved range. This could be caused by a basic management TLV from a later LLDP version than the one currently running on the switch.

TLVs Discarded: Shows the total number of LLDP TLVs discarded for any reason. In this case, the advertisement carrying the TLV may be accepted, but the individual TLV was not usable.

Neighbor Ageouts: Shows the number of LLDP neighbors dropped on the port due to Time-to-Live expiring.

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