The pim ipv6 hello-option override-interval command sets the interval carried in Hello messages for overriding the prune action on the interface.
The undo pim ipv6 hello-option override-interval command, restores the default configuration.
By default, the interval carried in Hello messages for overriding the prune action on the interface is 2500 milliseconds.
pim ipv6 hello-option override-interval interval
undo pim ipv6 hello-option override-interval
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies the interval of overriding the prune action. | The value is an integer that ranges from 1 to 65535, in milliseconds. |
GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-Trunk interface view, VLANIF interface view, loopback interface view
Usage Scenario
Hello messages sent from switches carry lan-delay and override-interval values. The override-interval parameter refers to the period during which a downstream switch can override the prune action.
When a switch sends a Prune message to the upstream device in the same network segment, the other devices that still request multicast data need to send a Join message to the upstream device within the override-interval period.
If switches on the same link have different values, the maximum value is used.
The value of PPT is the sum of lan-delay and override-interval values. When receiving a Prune message from a downstream interface, the switch does not perform the prune action until the PPT expires. If the switch receives a Join message from the downstream interface before the PPT expires, it cancels the Prune action.
Prerequisites
IPv6 multicast routing has been enabled globally using the multicast ipv6 routing-enable command in the system view.
Precautions
The pim ipv6 hello-option override-interval command has the same function as the hello-option override-interval (IPv6) command in the PIM-IPv6 view. By default, if the pim ipv6 hello-option override-interval command is not used, the value configured in the PIM-IPv6 view is used; otherwise, the value configured in the interface view is used.
<HUAWEI> system-view [HUAWEI] multicast ipv6 routing-enable [HUAWEI] interface vlanif 100 [HUAWEI-Vlanif100] pim ipv6 hello-option override-interval 2000
<HUAWEI> system-view [HUAWEI] multicast ipv6 routing-enable [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo portswitch [HUAWEI-GigabitEthernet0/0/1] pim ipv6 hello-option override-interval 2000