pim ipv6 require-genid

Function

The pim ipv6 require-genid command configures a PIM interface to reject the Hello messages without the Generation ID.

The undo pim ipv6 require-genid command restores the default configuration.

By default, a PIM interface is allowed to receive the Hello messages without the Generation ID.

Format

pim ipv6 require-genid

undo pim ipv6 require-genid

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

After an interface is enabled with PIM, the switch generates a random number as the Generation ID of the Hello message. If the device status is updated, the switch generates a new Generation ID. When the switch finds that the Hello message received from a PIM neighbor contains a different Generation ID, it considers that the status of the PIM neighbor has changed.

To ensure that connected PIM neighbors work properly, run the pim ipv6 require-genid command to configure a PIM interface to reject the Hello messages without the Generation ID.

Prerequisites

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

Precautions

This command is valid for both PIM-DM (IPv6) and PIM-SM (IPv6).

Example

# Configure VLANIF100 to reject the Hello messages without the Generation ID.

<HUAWEI> system-view
[HUAWEI] multicast ipv6 routing-enable
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] pim ipv6 require-genid

# Configure GE0/0/1 to reject the Hello messages without the Generation ID.

<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 require-genid