Network configuration
Discovery protocols
5-10
Discovery protocols
Select Network > Discovery protocols to configure LLDP and CDP options. Both protocols
provide a mechanism for devices on a network to exchange information with their neighbors.
CDP
The AP can be configured to transmit CDP (Cisco Discovery Protocol) information on all
ports. This information is used to advertise AP information to third-party devices, such as
CDP-aware switches.
When installed with a controller, the controller uses CDP information sent by autonomous
APs to collect information about these APs for display in its management tool.
To enable CDP transmission, select Network > Discovery protocols.
LLDP
The IEEE 802.1AB Link Layer Discovery Protocol (LLDP) provides a standards-based method
for network devices to discover each other and exchange information about their
capabilities. An LLDP device advertises itself to adjacent (neighbor) devices by transmitting
LLDP data packets on all ports on which outbound LLDP is enabled, and reading LLDP
advertisements from neighbor devices on ports that are inbound LLDP-enabled. An LLDP
enabled port receiving LLDP packets inbound from neighbor devices stores the packet data
in a Neighbor database (MIB).
LLDP information is used by network management tools to create accurate physical network
topologies by determining which devices are neighbors and through which ports they
connect.
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