The hello-option holdtime command sets the neighbor timeout period carried in PIM Hello packets to be sent by a router.
The undo hello-option holdtime command restores the default value.
By default, the neighbor timeout period carried in PIM Hello packets to be sent by a router is 105s.
Usage Scenario
You can run this command to set the neighbor timeout period carried in PIM Hello packets to be sent by a router. If the receive end does not receive any Hello packet from the local device within the timeout period, the receive end considers that the local neighbor is aged. If routers need to quickly detect PIM neighbor changes, set this parameter to a smaller value, but the value must be greater than the configured interval for sending Hello messages. The timer hello or pim ipv6 timer hello command can be used to set the interval at which a PIM neighbor sends Hello messages.
Set a proper interval value based on the configuration of the timer hello or pim ipv6 timer hello command configured on PIM neighbors.Prerequisites
The multicast routing function has been enabled using the multicast ipv6 routing-enable command in the public network instance view.
Configuration Impact
If the hello-option holdtime command is run more than once, the latest configuration overrides the previous one.