Configuring MPLS L3VPN FRR

You can use the following methods to configure MPLS L3VPN FRR:

If both methods are configured, Method 2 takes precedence over Method 1.

To configure MPLS L3VPN FRR:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Configure the source IP address for BFD echo packets.

bfd echo-source-ip ip-address

The bfd echo-source-ip command is required when echo-mode BFD is used to detect primary route connectivity in VPNv4 route backup for an IPv4 route. For more information about this command, see High Availability Command Reference.

3. Create a routing policy and enter routing policy view.

route-policy route-policy-name permit node node-number

By default, no routing policies exist.

This step is required to enable MPLS L3VPN FRR in Method 2.

For more information about this command, see Layer 3—IP Routing Command Reference.

4. Set the backup next hop for FRR.

apply fast-reroute backup-nexthop ip-address

By default, no backup next hop address is set for FRR.

This step is required to enable MPLS L3VPN FRR in Method 2.

For more information about this command, see Layer 3—IP Routing Command Reference.

5. Return to system view.

quit

N/A

6. Enter BGP instance view.

bgp as-number [ instance instance-name ] [ multi-session-thread ]

N/A

7. (Optional.) Use echo-mode BFD to detect the connectivity to the next hop of the primary route.

primary-path-detect bfd echo

By default, ARP is used to detect the connectivity to the next hop.

Use this command if necessary in VPNv4 route backup an IPv4 route.

For more information about this command, see Layer 3IP Routing Command Reference.

8. Enter BGP-VPN instance view.

ip vpn-instance vpn-instance-name

N/A

9. Enter BGP-VPN IPv4 unicast address family view.

address-family ipv4 [ unicast ]

N/A

10. Enable MPLS L3VPN FRR.

  • (Method 1) Enable MPLS L3VPN FRR for the address family:pic

  • (Method 2) Use a routing policy to specify a backup next hop for the address family:fast-reroute route-policy route-policy-name

By default, MPLS L3VPN FRR is disabled.

Method 1 might result in routing loops. Use it with caution.

By default, no routing policy is used.

The apply fast-reroute backup-nexthop command can take effect in the routing policy that is being used. Other apply commands do not take effect.

For more information about the command, see Layer 3—IP Routing Command Reference.