H3C Technologies H3C S5560 Series Switches - Manual (Page 272)

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TLVs provide a cost-effective and easy-to-use solution for deploying voice devices in Ethernet.
LLDP-MED TLVs are shown in Table 24 .
Table 24 LLDP-MED TLVs
Type Description
LLDP-MED Capabilities
Allows a network device to advertise the LLDP-MED TLVs that it
supports.
Network Policy
Allows a network device or terminal device to advertise the VLAN
ID of a port, the VLAN type, and the Layer 2 and Layer 3 priorities
for specific applications.
Extended Power-via-MDI
Allows a network device or terminal device to advertise power
supply capability. This TLV is an extension of the Power Via MDI
TLV.
Hardware Revision Allows a terminal device to advertise its hardware version.
Firmware Revision Allows a terminal device to advertise its firmware version.
Software Revision Allows a terminal device to advertise its software version.
Serial Number Allows a terminal device to advertise its serial number.
Manufacturer Name Allows a terminal device to advertise its vendor name.
Model Name Allows a terminal device to advertise its model name.
Asset ID
Allows a terminal device to advertise its asset ID. The typical case
is that the user specifies the asset ID for the endpoint to facilitate
directory management and asset tracking.
Location Identification
Allows a network device to advertise the appropriate location
identifier information for a terminal device to use in the context of
location-based applications.
NOTE:
•
If the MAC/PHY configuration/status TLV is not advertisable, none of the LLDP-MED TLVs will be
advertised even if they are advertisable.
• If the LLDP-MED capabilities TLV is not advertisable, the other LLDP-MED TLVs will not be advertised
even if they are advertisable.
Management address
The network management system uses the management address of a device to identify and manage the
device for topology maintenance and network management. The management address is encapsulated
in the management address TLV.
Working mechanism
LLDP operating modes
An LLDP agent can operate in one of the following modes:
• TxRx mode—An LLDP agent in this mode can send and receive LLDP frames.
• Tx mode—An LLDP agent in this mode can only send LLDP frames.
• Rx mode—An LLDP agent in this mode can only receive LLDP frames.