Install Guide

● 802.1X controlled ports do not allow LLDPDUs until the connected device is authenticated.
CONFIGURATION versus INTERFACE Configurations
All LLDP configuration commands are available in PROTOCOL LLDP mode, which is a sub-mode of the CONFIGURATION mode
and INTERFACE mode.
● Configurations made at the CONFIGURATION level are global; that is, they affect all interfaces on the system.
● Configurations made at the INTERFACE level affect only the specific interface; they override CONFIGURATION level
configurations.
Example of the protocol lldp Command (CONFIGURATION Level)
Enabling LLDP
LLDP is by default. Enable and disable LLDP globally or per interface. If you enable LLDP globally, all UP interfaces send periodic
LLDPDUs.
To enable LLDP, use the following command.
1. Enter Protocol LLDP mode.
CONFIGURATION or INTERFACE mode
protocol lldp
2. Enable LLDP.
PROTOCOL LLDP mode
no disable
Disabling and Undoing LLDP
To disable or undo LLDP, use the following command.
● Disable LLDP globally or for an interface.
disable
To undo an LLDP configuration, precede the relevant command with the keyword no.
Enabling LLDP on Management Ports
LLDP on management ports is enabled by default.
To enable LLDP on management ports, use the following command.
1. Enter Protocol LLDP mode.
CONFIGURATION mode
protocol lldp
2. Enter LLDP management-interface mode.
LLDP-MANAGEMENT-INTERFACE mode
management-interface
3. Enable LLDP.
PROTOCOL LLDP mode
no disable
Disabling and Undoing LLDP on Management Ports
To disable or undo LLDP on management ports, use the following command.
442
Link Layer Discovery Protocol (LLDP)