Reference Guide

564 | Link Layer Discovery Protocol (LLDP)
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Important Points to Remember
• LLDP is disabled by default.
• Dell Networking systems support up to 8 neighbors per interface.
• Dell Networking systems support a maximum of 8000 total neighbors per system. If the number of
interfaces multiplied by 8 exceeds the maximum, the system will not configure more than 8000.
• INTERFACE level configurations override all CONFIGURATION level configurations.
• LLDP is not hitless.
LLDP Compatibility
• Spanning Tree and FRRP “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, and they override
CONFIGURATION level configurations.
Figure 30-7. Configuration and Interface mode LLDP Commands
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
R1(conf-lldp)#exit
R1(conf)#interface tengigabitethernet 1/31
R1(conf-if-te-1/31)#protocol lldp
R1(conf-if-te-1/31-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
R1(conf-if-te-1/31-lldp)#