Lldp Compatibility; Configuration Versus Interface Configurations; Enabling Lldp - Dell S4048–ON Configuration Manual

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 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)
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 tengigabitethernet 1/3
Dell(conf-if-te-1/3)#protocol lldp
Dell(conf-if-te-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-te-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
540 Link Layer Discovery Protocol (LLDP)