The hello-option holdtime command sets the timeout period for a switch to wait to receive Hello messages from its PIM neighbor.
The undo hello-option holdtime command restores the default configuration.
By default, the timeout period for a switch to wait to receive Hello messages from its PIM neighbor is 105 seconds.
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies the timeout time during which a switch waits to receive a Hello message from its PIM neighbor. | The value is an integer that ranges from 1 to 65535, in seconds. |
Usage Scenario
On the PIM (IPv6) network, after a switch receives a Hello message from its PIM neighbor, the switch starts a timer based on the Holdtime value in the Hello message. If the switch does not receive any Hello message from its PIM neighbor when the timer expires, it considers the neighbor invalid or unreachable.
The hello-option holdtime (IPv6) command sets the timeout period during which a PIM interface waits to receive the Hello message from its neighbor.
Prerequisites
IPv6 multicast routing has been enabled globally using the multicast ipv6 routing-enable command in the system view.
Precautions
The timeout period must be greater than the interval for sending Hello messages. You can run the timer hello (IPv6) command to set the interval for sending Hello messages.
The hello-option holdtime command has the same function as the pim ipv6 hello-option holdtime command in the interface view. By default, if the pim ipv6 hello-option holdtime command is not used, the value configured in the PIM-IPv6 view is used; otherwise, the value configured in the interface view is used.
# In the PIM-IPv6 view, set the timeout interval to 120 seconds. The timeout interval is the period during which a switch waits to receive the Hello message from its PIM neighbor.
<HUAWEI> system-view [HUAWEI] multicast ipv6 routing-enable [HUAWEI] pim-ipv6 [HUAWEI-pim6] hello-option holdtime 120