Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル

•     TTL TLV 

•     End-of-LLDPDU TLV 

This mandatory TLV is sent by default after you enable LLDP on the port. It is not 
configurable. 

XCM8800 software uses the system’s MAC address to uniquely identify the device. 

This mandatory TLV is sent by default after you enable LLDP on the port; you cannot 
configure this TLV. The port ID TLV is used to uniquely identify the port within the device. 

The software uses the ifName object for this TLV, so it is the port number on stand-alone 
switches and the combination of slot and port number on modular switches.

The TTL TLV is mandatory, sent by default after LLDP is enabled, and nonconfigurable. This 
TLV indicates how long the record should be maintained in the LLDP database. The default 
value is 120 seconds (or 2 minutes). 

A value of 0 in the TTL TLV means the client is shutting down and that record should be 
deleted from the database. When you disable an LLDP port, the triggered update LLDPU 
from that port contains a TTL TLV of 0.

The TTL TLV is mandatory and is sent by default after LLDP is enabled. Although, 
technically, you do not configure the TTL TLV, you can configure the transmit hold value, 
which is used to calculate the TTL TLV. (See 

on page 165 for more 

information on transmit hold value and TTL.)

The end-of-LLDPDU TLV marks the end of the data. The system automatically adds this TLV 
to the LLDPDU after you enable LLDP.

Optional TLVs

All the optional TLVs are configurable using the CLI and/or SNMP. 

This section describes the optional TLVs, under the following categories:

•     Standards-based TLVs 

•     LLDP MED TLVs