Users Guide

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 Congurations
All LLDP conguration commands are available in PROTOCOL LLDP mode, which is a sub-mode of the CONFIGURATION mode and
INTERFACE mode.
• Congurations made at the CONFIGURATION level are global; that is, they aect all interfaces on the system.
• Congurations made at the INTERFACE level aect only the specic interface; they override CONFIGURATION level congurations.
Example of the protocol lldp Command (CONFIGURATION Level)
R1(conf)#protocol lldp
R1(conf-lldp)#?
advertise Advertise TLVs
disable Disable LLDP protocol globally
end Exit from configuration mode
exit Exit from LLDP configuration mode
hello LLDP hello configuration
mode LLDP mode configuration (default = rx and tx)
multiplier LLDP multiplier configuration
no Negate a command or set its defaults
show Show LLDP configuration
Dell(conf-lldp)#exit
Dell(conf)#interface gigabitethernet 1/3
Dell(conf-if-gi-1/3)#protocol lldp
Dell(conf-if-gi-1/3-lldp)#?
advertise Advertise TLVs
disable Disable LLDP protocol on this interface
end Exit from configuration mode
exit Exit from LLDP configuration mode
hello LLDP hello configuration
mode LLDP mode configuration (default = rx and tx)
multiplier LLDP multiplier configuration
no Negate a command or set its defaults
show Show LLDP configuration
Dell(conf-if-gi-1/3-lldp)#
Enabling LLDP
LLDP is enabled 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
Link Layer Discovery Protocol (LLDP)
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