Network configuration
Discovery protocols
5-11
LLDP operates at layer 2 and requires an LLDP agent to be active on each network interface
that will send and receive LLDP advertisements. LLDP advertisements can contain a variable
number of TLV (type, length, value) information elements. Each TLV describes a single
attribute of a device.
When an LLDP agent receives information from another device, it stores it locally in a special
LLDP MIB (management information base). This information can then be queried by other
devices via SNMP.
Support is provided for the following MIBs:
Physical topology MIB (RFC 2922)
Entity MIB version 2 (RFC 2737)
Interfaces MIB (RFC 2863)
Note LLDP information is only sent/received on Ethernet links. LLDP information is not collected
from wireless devices connected to an AP. However, LLDP can function across a local mesh
link and will show the AP on the other side of the link as a neighbor.
LLDP agent
Select this option to enable the LLDP agent on port 1. Select Configure TLVs to customize
TLV support.
Tra nsm it
Enable this option to have the agent transmit LLDP information to its neighbors.
Receive
Enable this option to have the agent accept LLDP information from its neighbors.
LLDP over local mesh
Enables support for LLDP on any active local mesh links. APs on the other side of a local
mesh link will be shown as neighbors when this feature is active.
LLDP settings
Use these options to define global LLDP settings on the controller.
Transmit interval
Sets the interval (in seconds) at which local LLDP information is updated and TLVs are sent
to neighboring network devices.
Multiplier
The value of Multiplier is multiplied by the Transmit interval to define the length of Time
to live.
Time to live
Indicates the length of time that neighbors will consider LLDP information sent by this agent
to be valid. Time to live is automatically calculated by multiplying Transmit interval by
Multiplier.
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