holdtime join-prune (IPv4)
Function
The holdtime join-prune command sets the holdtime value in Join-Prune messages sent by all PIM interfaces. wireless access controllers that receive Join-Prune messages set the time during which the downstream interface keeps the Join or Prune state according to holdtime.
The undo holdtime join-prune command restores the default value.
By default, the holdtime value in Join-Prune messages sent by all PIM interfaces is 210 seconds.
Parameters
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies the value of holdtime carried in Join-Prune messages sent by the local wireless access controller. | The value is an integer that ranges from 1 to 65535, in seconds. |
Usage Guidelines
Usage Scenario
After receiving a Join-Prune message from the downstream device, the wireless access controller starts the holdtime timer. After the timeout interval, if the wireless access controller does not receive subsequent Join-Prune messages from the downstream device, the downstream interface of a multicast group is suppressed from forwarding Join-Prune messages with information about multicast group joining. If Join-Prune messages carry information about multicast group prune, the downstream interface of the multicast group is restored.
Prerequisites
IP multicast routing has been enabled using the multicast routing-enable command.
Precautions
This command is valid for PIM-SM and PIM-DM.
The holdtime of Join-Prune messages must be larger than the interval for sending Join-Prune messages and is generally 3.5 times the interval for sending Join-Prune messages.
The holdtime join-prune command has the same function as the pim holdtime join-prune command in the interface view. By default, if the holdtime value is not used on an interface, the holdtime value configured in the PIM view is used.
