auto-frr

Function

The auto-frr command enables BGP Auto FRR.

The undo auto-frr command disables BGP Auto FRR.

By default, BGP Auto FRR is disabled.

Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this command.

Format

auto-frr

undo auto-frr

Parameters

None

Views

BGP view, BGP-IPv4 unicast address family view, BGP-IPv6 unicast address family view, BGP-VPN instance IPv4 address family view, BGP-VPN instance IPv6 address family view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

This function is applicable to networks that require a low packet loss rate and a short delay.

Using BGP Auto FRR together with BFD is recommended. They can rapidly detect a link fault and switch traffic to a standby link if a fault occurs.

Precautions

If both the ip frr command and the auto-frr command are configured, the ip frr command takes precedence over the auto-frr command. If a route fails to match the routing policy specified in the ip frr command, the auto-frr command takes effect.

On the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S, the auto-frr command can implement fast active/standby link switchovers of the forwarding plane and fast route convergence of the control plane. On other switch models, this command can only implement fast route convergence of the control plane.

Example

# Enable BGP Auto FRR for unicast routes.

<HUAWEI> system-view
[HUAWEI] bgp 100
[HUAWEI-bgp] auto-frr