Certain TLV units are mandatory and are included in the LLDP packets by default when LLDP is enabled. You cannot use the lldpadm command to exclude any of these units.
The following TLV units are mandatory:
Chassis ID – Information that is generated by the hostid command
Port ID – MAC address of the physical NIC
TTL (time to live)
End of protocol data unit (PDU)
Multiple LLDP agents can be enabled on a single system depending on the number of links. The chassis ID and port ID combination uniquely identifies an agent and distinguishes it from other agents on the system.
Example 5-1 Displaying the Chassis ID and Port IDThe following example displays the chassis ID and port ID for an LLDP agent.
# hostid 004e434e
# dladm show-phys -m net4 LINK SLOT ADDRESS INUSE CLIENT net4 primary 0:1b:21:87:8b:b4 yes net4
# lldpadm show-agent -l net4 AGENT CHASSISID PORTID net4 004e434e 00:1b:21:87:8b:b4
Oracle Solaris LLDP agents use hostid as the chassis ID and the port's MAC address as the port ID.