3Com Switch 4800G 24-Port Configuration Manual page 1183

Table 91 Basic LLDP TLVs
Type
Port Description TLV
System Name TLV
System Description TLV
System Capabilities TLV
Management Address TLV
Organization defined LLDP TLVs
1 LLDP TLVs defined in IEEE802.1 include the following:
Port VLAN ID TLV, which carries port VLAN ID.
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Port and protocol VLAN ID TLV, which carries port protocol VLAN ID.
■
VLAN name TLV, which carries port VLAN name.
■
Protocol identity TLV, which carries types of the supported protocols.
■
n
Currently, protocol identity TLVs can only be received on 3Com devices.
2 IEEE 802.3 defined LLDP TLVs include the following:
MAC/PHY configuration/status TLV, which carries port configuration, such as
■
port speed, duplex state, whether port speed auto-negotiation is supported,
the state of auto-negotiation, current speed, and current duplex state.
Power via MDI TLV, which carries information about power supply capabilities.
■
Link aggregation TLV, which carries the capability and state of link aggregation.
■
Maximum frame size TLV, which carries the maximum frame size supported,
■
namely, MTU (maximum transmission unit).
MED related LLDP TLVs
LLDP-MED capabilities TLV, which carries the MED type of the current device
■
and the types of the LLDP MED TLVs that can be encapsulated in LLDPDUs.
Network policy TLV, which carries port VLAN ID, supported applications (such
■
as voice and video services), application priority, and the policy adopted.
Extended power-via-MDI TLV, which carries the information about the power
■
supply capability of the current device.
Hardware revision TLV, which carries the hardware version of an MED device.
■
Firmware revision TLV, which carries the firmware version of an MED device.
■
Software revision TLV, which carries the software version of an MED device.
■
Serial number TLV, which carries the serial number of an MED device.
■
Description
Carries Ethernet port description
Carries device name
Carries system description
Carries information about system capabilities
Carries the management address, the
corresponding port number, and OID (object
identifier).
If the management address is not configured,
it is the IP address of the interface of the VLAN
with the least VLAN ID among those permitted
on the port. If the IP address of the VLAN
interface is not configured, IP address
127.0.0.1 is used as the management address.
Introduction to LLDP 1183
Remarks
Optional to
LLDP