ipv6 frr (VPN instance IPv6 address family view)

Function

The ipv6 frr command enables IPv6 Fast Reroute (FRR) of a private network in the VPN instance IPv6 address family view.

The undo ipv6 frr command disables the function.

By default, the function is disabled.

Format

ipv6 frr

undo ipv6 frr

Parameters

None

Views

VPN instance IPv6 address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
route-base	write

Usage Guidelines

Usage Scenario

When there are private network routes generated by multiple types of routing protocols in a VPN instance enabled with the IPv6 address family, the ipv6 frr command can be used to enable IPv6 FRR to immediately switch traffic among routes and ensure uninterrupted traffic forwarding if certain routes are faulty.

Prerequisites

The VPN instance has been created, and the IPv6 address family has been enabled in the VPN instance.

Configuration Impact

After the ipv6 frr command is run, the system automatically selects an inactive route as the backup of an active route.

Precautions

A routing loop may occur after the ipv6 frr command is run because the command is used to enable routes generated by different routing protocols to back up each other. Therefore, exercise caution when running the command.

Example

# Enable IPv6 FRR of a private network in a VPN instance.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpn1
[*HUAWEI-vpn-instance-vpn1] ipv6-family unicast
[*HUAWEI-vpn-instance-vpn1-af-ipv6] ipv6 frr