Operating Modes Of Lldp - 3Com 4510G Configuration Manual

management. In addition, LLDP-MED TLVs make deploying voice devices in Ethernet easier.
LLDP-MED TLVs are shown in
Table 5-6 LLDP-MED TLVs
Type
LLDP-MED Capabilities
Network Policy
Extended Power-via-MDI
Hardware Revision
Firmware Revision
Software Revision
Serial Number
Manufacturer Name
Model Name
Asset ID
Location Identification
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:
TxRx mode. A port in this mode sends and receives LLDP frames.
Tx mode. A port in this mode only sends LLDP frames.
Rx mode. A port in this mode only receives LLDP frames.
Disable mode. A port in this mode does not send or receive LLDP frames.
Each time the LLDP operating mode of a port changes, its LLDP protocol state machine re-initializes.
To prevent LLDP from being initialized too frequently at times of frequent operating mode change, an
initialization delay, which is user configurable, is introduced. With this delay mechanism, a port must
wait for the specified interval before it can initialize LLDP after the LLDP operating mode changes.
Table 5-6:
Allows a MED endpoint to advertise the supported LLDP-MED
TLVs and its device type.
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.
Allows a network device or MED endpoint to advertise
power-related information (according to IEEE 802.3AF).
Allows a MED endpoint device to advertise its hardware
version.
Allows a MED endpoint to advertise its firmware version.
Allows a MED endpoint to advertise its software version.
Allows an LLDP-MED endpoint device to advertise its serial
number.
Allows a MED endpoint to advertise its vendor name.
Allows a MED endpoint to advertise its model name.
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.
Allows a network device to advertise the appropriate location
identifier information for an endpoint to use in the context of
location-based applications.
5-5
Description