lldp message-transmission interval (AP system profile view)
Function
The lldp message-transmission interval command sets the LLDP packet transmission interval.
The undo lldp message-transmission interval command restores the default LLDP packet transmission interval.
The default LLDP packet transmission interval is 30 seconds.
Parameters
Parameter |
Description |
Value |
|---|---|---|
interval |
Specifies the LLDP packet transmission interval. |
The value is an integer that ranges from 5 to 32768, in seconds. The interval value depends on the parameter delay set by the lldp message-transmission delay command. The interval value must be greater than or equal to 4 times the delay value; otherwise, the system displays an error message when you run the lldp message-transmission interval command. |
Usage Guidelines
Usage Scenario
When the LLDP status of the AP keeps unchanged or the AP does not discover new neighbors, the AP sends LLDP packets to the neighbors at a specified interval.
If you want to change the network topology detection frequency, run the lldp message-transmission interval command to change the LLDP packet transmission interval.
Configuration Impact
- A large value reduces the LLDP packet transmission frequency. This helps save system resources. However, if the value is too large, the device cannot notify neighbors of its status in a timely manner, and the NMS cannot discover the network topology changes in real time.
- A short interval increases the LLDP packet transmission frequency and enables the NMS to discover network topology changes in real time. If the delay is too short, LLDP packets are exchanged frequently. This increases the system load and wastes resources.
- The default value is recommended.
Precautions
- Increasing the value of interval is not restricted by the value of delay. interval can be any number from 5 to 32768.
- The interval value must be greater than or equal to four times the delay value. Therefore, if you want to set interval to be smaller than four times the value of delay, first reduce the delay value to be less than or equal to a quarter of the new interval value, and then reduce the interval value.
If the delay value is larger than a quarter of the interval value, the system displays an error message when you run the undo lldp message-transmission interval command. To run the undo lldp message-transmission interval command, reduce the delay value to be less than or equal to a quarter of the interval value first.