The probe-interval command sets the interval for a FW to send Probe messages (null Register message) to the Rendezvous Point (RP).
The undo probe-interval command restores the default value of the interval.
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies the interval for sending Probe messages to RP. | The value is an integer that ranges from 1 to 1799, in seconds. |
By default, the interval for a FW to send Probe messages to the RP is 5 seconds.
When receiving a Register-Stop message sent by the RP, the Designated router (DR) at the source side stops sending Register messages and enters the register suppression state.
During the register suppression, the DR at the source side sends Probe messages to notify the RP that the multicast source is still in the Active state. After the register suppression times out, the DR at the source side starts to send Register messages.
The interval set using the probe-interval command must be less than half the interval set using the register-suppression-timeout command.