Configuring 802.1AB 802.1AB Overview
OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008 page 13-5
IEEE 802.1 organizationally specific TLV set
• Port VLAN ID TLV
• Port and Protocol VLAN ID TLV
• VLAN name TLV
• Protocol identity TLV
Note. If one TLV from this set is included in the LLDPDU, then all TLVs need to be included.
IEEE 802.3 organizationally specific TLV set
• MAC/PHY configuration/status TLV
• Power Via MDI TLV (In network connectivity TLV set, Extended Power-Via-MDI TLV is supported.)
• Link Aggregation TLV
• Maximum frame size TLV
ANSI-TIA LLDP-MED TLV sets
• Network connectivity TLV set
• LLDP-MED capabilities TLV
• Network Policy TLV
• Location Identification TLV
• Extended Power-via-MDI TLV
When an 802.1AB supporting system receives an LLDPDU containing MED capability TLV, then the
remote device is identified as an edge device (IP phone, IP PBX, etc.). In such a case the Alcatel device
will stop sending LLDPDU and start sending MED LLDPDU on the port connected to the edge device.
LLDP Agent Operation
A network device that implements LLDP, supports an LLDP agent. An LLDP agent operates in any one of
the following three modes:
Transmit-only mode: The agent can only transmit the information about the capabilities and the current
status of the local system at regular intervals.
Receive-only mode: The agent can only receive information about the capabilities and the current status
of the remote systems.
Transmit and receive mode: The agent can transmit the capabilities and status information of the local
system and receive the capabilities and the status information of the remote system.
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