Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

Enabling or Disabling LLDP Operation on the Switch. Enabling LLDP operation (the default) causes the switch to:

■Use active, LLDP-enabled ports to transmit LLDP packets describing itself to neighbor devices.

■Add entries to its neighbors table based on data read from incoming LLDP advertisements.

Syntax [ no ] lldp run

Enables or disables LLDP operation on the switch. The no form of the command, regardless of individual LLDP port configurations, prevents the switch from transmitting outbound LLDP advertisements, and causes the switch to drop all LLDP advertisements received from other devices. The switch preserves the current LLDP configuration when LLDP is disabled. After LLDP is disabled, the information in the LLDP neighbors database remains until it times-out. (Default: Enabled)

For example, to disable LLDP on the switch:

ProCurve(config)# no lldp run

Changing the Packet Transmission Interval. This interval controls how often active ports retransmit advertisements to their neighbors.

Syntax lldp refresh-interval < 5 - 32768 >

Changes the interval between consecutive transmissions of LLDP advertisements on any given port. (Default: 30 seconds)

Note: The refresh-intervalmust be greater than or equal to (4 x delay-interval). (The default delay-intervalis 2). For example, with the default delay-interval, the lowest refresh- interval you can use is 8 seconds (4 x 2 = 8). Thus, if you want a refresh-intervalof 5 seconds, you must first change the delay interval to 1 (that is, 4 x 1 < 5). If you want to change the delay- interval, use the setmib command.

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