Setup Guide
• LLDP is not hitless.
LLDP Compatibility
• Spanning tree and force10 ring protocol “blocked” ports allow LLDPDUs.
• 802.1X controlled ports do not allow LLDPDUs until the connected device is authenticated.
CONFIGURATION versus INTERFACE Congurations
All LLDP conguration commands are available in PROTOCOL LLDP mode, which is a sub-mode of the CONFIGURATION mode and
INTERFACE mode.
• Congurations made at the CONFIGURATION level are global; that is, they aect all interfaces on the system.
• Congurations made at the INTERFACE level aect only the specic interface; they override CONFIGURATION level congurations.
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 conguration, 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
Link Layer Discovery Protocol (LLDP)
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