Huawei AR150/200 Series Configuration Manual page 69

Huawei AR150&200 Series Enterprise Routers
Configuration Guide - Network Management
LLDP is implemented by the MIB. It performs the following functions:
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By using the MIB, the device obtains the neighbor information, including the remote interface
connected to the local device and the bridge MAC address of the peer device.
Concept
MIB
Management information bases (MIBs) are classified into LLDP Local System MIBs and the
LLDP Remote System MIBs.
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LLDP Agent
An LLDP agent manages LLDP operations for an interface.
The LLDP agent performs the following operations:
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LLDP Management Address
The LLDP management address (short for management address) is used by the NMS to identify
the AR150/200 and implement network management. A management address identifies a device.
It makes the network topology clear and facilitates network management. The management
address is carried in the Management Address Type-Length-Value (TLV) field of an LLDP
packet to be transmitted to neighbor devices.
Issue 02 (2012-03-30)
The LLDP module updates the LLDP local system MIB and its own extended MIB
(Organizationally defined local device LLDP MIB extension in the figure) by interacting
with the PTOPO MIB, Entity MIB, Interface MIB, and Other MIBs.
The LLDP module sends the LLDP packets carrying its own information to the peer device
through the interface connected to the peer device.
The LLDP module receives the LLDP packets from the peer device, and then updates the
LLDP remote system MIB stored on the local device.
LLDP Local System MIB: stores information about the local device, including the device
ID, port ID, system name, system description, port description, system capability, and
management address.
LLDP Remote System MIB: stores information about neighbor devices, including the
device ID, port ID, system name, system description, port description, system capability,
and management address.
Maintains information in the LLDP local system MIB.
Obtains and sends LLDP local system MIB information to neighbor devices when the status
of the local device status changes. If the local device status keeps unchanged, the LLDP
agent also obtains and sends LLDP local system MIB information to neighbor devices at
intervals.
Identifies and processes received LLDP packets.
Maintains information in the LLDP remote system MIB.
Sends LLDP traps to the NMS when information in the LLDP local system MIB or the
LLDP remote system MIB changes.
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