QTech QSW-2800 series Configuration Manual - Chapter 14 Lldp-Med
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Chapter 14 LLDP-MED
14.1 Introduction to LLDP-MED
LLDP-MED (Link Layer Discovery Protocol-Media Endpoint Discovery) based on 802.1AB
LLDP (Link Layer Discovery Protocol) of IEEE. LLDP provides a standard link layer discovery
mode, it sends local device information (including its major capability, management IP
address, device ID and port ID) as TLV (type/length/value) triplets in LLDPDU (Link Layer
Discovery Protocol Data Unit) to the direct connection neighbors. The device information
received by the neighbors will be stored with a standard management information base (MIB).
This allows a network management system to quickly detect and identify the communication
status of the link.
In 802.1AB LLDP, there is no transmission and management about the voice device
information. To deploy and manage voice device expediently, LLDP-MED TLVs provide
multiple information, such as PoE (Power over Ethernet), network policy, and the location
information of the emergent telephone service.
14.2 LLDP-MED Configuration Task
Sequence
1. Basic LLDP-MED configuration
Command
Explanation
Port mode
lldp transmit med tlv all
no lldp transmit med tlv all
Configure the specified port to send all
LLDP-MED TLVs. The no command
disables the function.
lldp transmit med tlv capability
no lldp transmit med tlv capability
Configure the specified port to send LLDP-
MED Capability TLV. The no command
disables the capability.
lldp transmit med tlv networkPolicy
no lldp transmit med tlv networkPolicy
Configure the specified port to send LLDP-
MED Network Policy TLV. The no command
disables the capability.
lldp transmit med tlv extendPoe
no lldp transmit med tlv extendPoe
Configure the specified port to send LLDP-
MED Extended Power-Via-MDI TLV. The no
command disables the capability.
lldp transmit med tlv inventory
Configure the port to send LLDP-MED