A10E/A28E/A28F Configuration Guide
Working principles of LLDP
LLDP is a kind of point-to-point one-way issuance protocol, which notifies local device link
status to peer end by sending LLDPDU (or sending LLDPDU when link status changes)
periodically from local to peer end.
The procedure of packet exchange:
When local device transmits packet, it gets system information required by TLV from
NView NNM (Network Node Management) and gets configuration information from
LLDP MIB to generate TLV and form LLDPDU to transmit to peer.
The peer receives LLDPDU and analyzes TLV information. If there is any change, the
information will be updated in neighbor MIB table of LLDP and notifies NView NNM
system.
The aging time of Time To Live (TTL) of local device information in the neighbour node can
be adjusted by modifying the parameter values of aging coefficient, sends LLDP packets to
neighbour node, after receiving LLDP packets, neighbour node will adjust the aging time of
its neighbour nodes (sending side) information. Aging time formula, TTL = Min {65535,
(interval × hold-multiplier)}:
Interval indicates the time period to send LLDP packets from neighbor node.
Hold-multiplier refers to the aging coefficient of device information in neighbor node.
9.4.2 Preparing for configurations
Scenario
When you obtain connection information between devices through NView NNM system for
topology discovery, the A10E/A28E needs to enable LLDP, notify their information to the
neighbours mutually, and store neighbour information to facilitate the NView NNM system
queries.
Prerequisite
N/A
9.4.3 Default configurations of LLDP
The default configuration of LLDP is as below.
LLDP alarm function status
To Next Page
Loading...