This section describes how to configure a delay for sending LLDP alarms, so that flapping of network topology caused by frequent LLDP alarms can be prevented.
The longer the delay, the lower the frequency of network topology changes on a device. However, if the delay for sending LLDP alarms is too long, the NMS cannot trace changes of the neighbor status. As a result, the NMS cannot refresh network topology for a device in a timely manner.
The shorter the delay, the higher the frequency of network topology changes on a device. This helps the NMS refresh network topology on the device in a timely manner. However, if the delay is too short, the NMS refreshes status information about neighbors frequently. This causes flapping of network topology on a device, increases the load on the system, and wastes resources.
The system view is displayed.
The LLDP function is enabled globally.
A delay for sending LLDP alarms is configured.
It is recommended that you use the default delay for sending LLDP alarms unless otherwise noted.