Reference Guide

Figure 73. Extended Power via MDI TLV
Configure LLDP
Configuring LLDP is a two-step process.
1. Enable LLDP globally.
2. Advertise TLVs out of an interface.
Related Configuration Tasks
● Viewing the LLDP Configuration
● Viewing Information Advertised by Adjacent LLDP Agents
● Configuring LLDPDU Intervals
● Configuring Transmit and Receive Mode
● Configuring a Time to Live
● Debugging LLDP
Important Points to Remember
● LLDP is enabled by default.
● Dell Networking systems support up to eight neighbors per interface.
● Dell Networking systems support a maximum of 8000 total neighbors per system. If the number of interfaces multiplied by
eight exceeds the maximum, the system does not configure more than 8000.
● INTERFACE level configurations override all CONFIGURATION level configurations.
● 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 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
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Link Layer Discovery Protocol (LLDP)