Dell PowerConnect 5524P User Manual page 536

The following is an example of the CLI commands:
console(config)# interface gi1/0/1
console(config-if)# lldp run
console(config)# lldp timer 30
console(config)# lldp hold-multiplier 3
console(config)# lldp reinit 4
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Dell PowerConnect 55xx Systems User Guide