H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 350)

31-3
Table 31-1 Basic LLDP TLVs
Type Description Remarks
End of LLDPDU TLV Marks the end of an LLDPDU.
Chassis ID TLV Carries the bridge MAC address of the sender
Port ID TLV
Carries the sending port. For devices that do not send MED
TLVs, port ID TLVs carry sending port name. For devices
that send MED TLVs, port ID TLVs carry the MAC
addresses of the sending ports or bridge MAC addresses (if
the MAC addresses of the sending ports are unavailable).
Time To Live TLV Carries the TTL of device information
Required for
LLDP
Port Description TLV Carries Ethernet port description
System Name TLV Carries device name
System Description TLV Carries system description
System Capabilities TLV Carries information about system capabilities
Management Address TLV
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.
Optional to
LLDP
Organization defined LLDP TLVs
1) LLDP TLVs defined in IEEE802.1 include the following:
z
Port VLAN ID TLV, which carries port VLAN ID.
z
Port and protocol VLAN ID TLV, which carries port protocol VLAN ID.
z
VLAN name TLV, which carries port VLAN name.
z
Protocol identity TLV, which carries types of the supported protocols.
Currently, protocol identity TLVs can only be received on H3C devices.
2) IEEE 802.3 defined LLDP TLVs include the following:
z
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.
z
Power via MDI TLV, which carries information about power supply capabilities.
z
Link aggregation TLV, which carries the capability and state of link aggregation.
z
Maximum frame size TLV, which carries the maximum frame size supported, namely, MTU
(maximum transmission unit).