Item

Description

 

Set the minimum interval for sending traps.

Trap Interval

With the LLDP trapping function enabled on a port, traps are sent out the port to

advertise the topology changes detected over the trap interval to neighbors. By

 

tuning this interval, you can prevent excessive traps from being sent when topology

 

is instable.

 

 

 

Set initialization delay for LLDP-enabled ports.

 

Each time the LLDP operating mode of a port changes, its LLDP protocol state

Reinit Delay

machine re-initializes. To prevent LLDP from being initialized too frequently at times

of frequent operating mode change, initialization delay is introduced. With this

 

 

delay mechanism, a port must wait for the specified interval before it can initialize

 

LLDP after the LLDP operating mode changes.

 

 

 

Set LLDPDU transmit delay.

 

With LLDP enabled, a port advertises LLDPDUs to its neighbors both periodically

 

and when the local configuration changes. To avoid excessive number of LLDPDUs

 

caused by frequent local configuration changes, an LLDPDU transmit delay is

Tx Delay

introduced. Thus, after sending an LLDPDU, the port must wait for the specified

interval before it can send another one.

 

 

IMPORTANT:

 

LLDPDU transmit delay must be less than the TTL to ensure that the LLDP neighbors can

 

receive LLDPDUs to update information about the device you are configuring before it

 

is aged out.

 

Set the LLDPDU transmit interval.

 

IMPORTANT:

Tx Interval

If the product of the TTL multiplier and the LLDPDU transmit interval is greater than

65535, the TTL carried in transmitted LLDPDUs takes 65535 seconds. In this case, the

 

 

likelihood exists that the LLDPDU transmit interval is greater than TTL. You should

 

avoid the situation, because the LLDP neighbors will fail to receive LLDPDUs to update

 

information about the device you are configuring before it is aged out.

Return to LLDP configuration task list.

Displaying LLDP information for a port

Select Network LLDP from the navigation tree to enter the Port Setup tab, as shown in a. In the port list, click a port name to display its LLDP information at the lower half of the page. The LLDP information is organized by type and displayed in tabs as shown in a. You can click these tabs to display data you are interested in.

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