pim ipv6 state-refresh-capable

Function

The pim ipv6 state-refresh-capable command enables PIM-DM (IPv6) State-Refresh on an interface.

The undo pim ipv6 state-refresh-capable command disables PIM-DM (IPv6) State-Refresh.

By default, PIM-DM (IPv6) State-Refresh is enabled.

Format

pim ipv6 state-refresh-capable

undo pim ipv6 state-refresh-capable

Parameters

None

Views

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

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

PIM-DM (IPv6) State-Refresh is implemented by periodically sending State-Refresh messages in the network. After receiving a State-Refresh message, the switch in the pruned state resets the prune-status timer, preventing the downstream interface from forwarding packets.

After PIM-DM (IPv6) state-refresh is disabled, the interface starts to forward multicast data when the prune timer expires. The downstream routers that do not require the data send Prune messages. The process repeats and wastes a lot of network resources. Enabling PIM-DM (IPv6) State-Refresh can reduce traffic on the network.

Prerequisites

IPv6 multicast routing has been enabled using the multicast ipv6 routing-enable command in the system view.

Precautions

This command is valid for only PIM-DM (IPv6).

Example

# Disable PIM-DM (IPv6) State-Refresh on VLANIF100.

<HUAWEI> system-view
[HUAWEI] multicast ipv6 routing-enable
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] undo pim ipv6 state-refresh-capable

# Disable PIM-DM (IPv6) State-Refresh on GE0/0/1.

<HUAWEI> system-view
[HUAWEI] multicast ipv6 routing-enable
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] undo pim ipv6 state-refresh-capable