# Displaying LLDP receive statistics

Use this procedure to view LLDP receive statistics by port.

## Procedure steps

1. From the navigation tree, double-click Edit.

2. From the Edit tree, double-click Diagnostics.

3. From the Diagnostics tree, double-click 802.1AB.

4. From the 802.1AB tree, click LLDP.

5. Select the RX Stats tab.

The following table outlines the parameters of the RX Stats tab.

Table 1. Variable definitions
Variable | Value
--- | ---
PortNum | Specifies the port number.
FramesDiscardedTotal | Specifies the number of LLDP frames received on the port and discarded for any reason. This counter provides an indication that LLDP header formatting problems exist with the local LLDP agent in the sending system, or that LLDPDU validation problems exist with the local LLDP agent in the receiving system.
FramesErrors | Specifies the number of invalid LLDP frames received on the port, while the LLDP agent is enabled.
FramesTotal | Specifies the number of valid LLDP frames received on the port, while the LLDP agent is enabled.
TLVsDiscardedTotal | Specifies the number of LLDP TLVs discarded for any reason.
TLVsUnrecognizedTotal | Specifies the number of LLDP TLVs received on a given port that are not recognized by this LLDP agent on the indicated port. An unrecognized TLV is referred to as the TLV whose type value is in the range of reserved TLV types (000 1001 - 111 1110) in Table 9.1 of IEEE 802.1AB-2004. An unrecognized TLV can be a basic management TLV from a later LLDP version.
AgeoutsTotal | Represents the number of age-outs that occurred on a given port. An age-out is "the number of times the complete set of information advertised by a particular MSAP is deleted from tables contained in lldpRemoteSystemsData and lldpExtensions objects because the information timeliness interval has expired." This counter is similar to lldpStatsRemTablesAgeouts, except that it is on a for each-port basis. This enables NMS to poll tables associated with the lldpRemoteSystemsData objects and all LLDP extension objects associated with remote systems on the indicated port only. This counter is set to zero during agent initialization. When the admin status for a port changes from disabled to rxOnly, txOnly or txAndRx, the counter associated with the same port is reset to 0. The agent also flushes all remote system information associated with the same port. This counter is incremented only once when the complete set of information is invalidated (aged out) from all related tables on a particular port. Partial aging is not allowed, and thus, does not change the value of this counter.