3Com S7902E, Configuration Manual

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1-5
The Power Stateful Control TLV is defined in IEEE P802.3at D1.0. The later versions no longer support
this TLV. H3C devices send this type of TLVs only after receiving them.
LLDP-MED TLVs
LLDP-MED TLVs provide multiple advanced applications for voice over IP (VoIP), such as basic
configuration, network policy configuration, and address and directory management. LLDP-MED TLVs
satisfy the voice device vendors’ requirements for cost effectiveness, ease of deployment, and ease of
management. In addition, LLDP-MED TLVs make deploying voice devices in Ethernet easier.
LLDP-MED TLVs are shown in Table 1-6 :
Table 1-6 LLDP-MED TLVs
Type Description
LLDP-MED Capabilities
Allows a MED endpoint to advertise the supported LLDP-MED
TLVs and its device type.
Network Policy
Allows a network device or MED endpoint to advertise LAN type
and VLAN ID of the specific port, and the Layer 2 and Layer 3
priorities for a specific set of applications.
Extended Power-via-MDI
Allows a network device or MED endpoint to advertise
power-related information (according to IEEE 802.3AF).
Hardware Revision Allows a MED endpoint device to advertise its hardware version.
Firmware Revision Allows a MED endpoint to advertise its firmware version.
Software Revision Allows a MED endpoint to advertise its software version.
Serial Number
Allows an LLDP-MED endpoint device to advertise its serial
number.
Manufacturer Name Allows a MED endpoint to advertise its vendor name.
Model Name Allows a MED endpoint to advertise its model name.
Asset ID
Allows a MED endpoint 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 an endpoint to use in the context of
location-based applications.
Management address
The management address of a device is used by the network management system to identify and
manage the device for topology maintenance and network management. The management address is
encapsulated in the management address TLV.
Operating Modes of LLDP
LLDP can operate in one of the following modes: