Users Guide

Table Of Contents
LLDPDUs include mandatory and optional TLVs. Each LLDPDU starts with three mandatory TLVs, zero or more optional TLVs,
and end of LLDPDU TLV.
Mandatory TLVs
OS10 supports the three mandatory TLVs. These mandatory TLVs are at the beginning of the LLDPDU in the following order:
Chassis ID TLV
Port ID TLV
Time-to-live TLV
Table 24. Mandatory TLVs
Mandatory TLVs Type Description
Chassis ID 1 Identifies the chassis.
Port ID 2 Identifies a port through which the LAN
device transmits LLDPDUs.
Time-to-live 3 Number of seconds that the received
information in this LLDPDU is valid.
End of LLDPDU 0 Marks the end of an LLDPDU.
Optional TLVs
Optional TLVs include:
Basic TLVs
Organizationally specific TLVs
Custom TLVs
470
Layer 2