Configuring Mpls L3Vpn Frr - HP FlexNetwork 10500 Series Configuration Manual

Step
2. Enter BGP instance view.
3. Enter BGP-VPN instance
view.
4. Enable the BGP AS number
substitution feature.
5. Enter BGP-VPN IPv4 unicast
address family view.
6. (Optional.) Configure the
SoO attribute for a BGP peer
or peer group.
For more information about the commands in this section, see Layer 3—IP Routing Command
Reference.

Configuring MPLS L3VPN FRR

You can use the following methods to configure MPLS L3VPN FRR:
•
Method 1—Execute the pic command in BGP-VPN IPv4 unicast address family view. The
device calculates a backup next hop for each BGP route in the VPN instance if there are two or
more unequal-cost routes to reach the destination.
•
Method 2—Execute the fast-reroute route-policy command in BGP-VPN IPv4 unicast
address family view to use a routing policy. In the routing policy, specify a backup next hop by
using the apply fast-reroute backup-nexthop command. The backup next hop calculated by
the device must be the same as the specified backup next hop. Otherwise, the device does not
generate a backup next hop for the primary route. You can also configure if-match clauses in
the routing policy to identify the routes protected by FRR.
If both methods are configured, Method 2 takes precedence over Method 1.
To configure MPLS L3VPN FRR:
Step
1. Enter system view.
2. Configure the source IP
address for BFD echo
packets.
3. Create a routing policy
and enter routing policy
view.
Command
bgp as-number [ instance
instance-name ]
ip vpn-instance
vpn-instance-name
peer { ipv4-address
[ mask-length ] | group-name }
substitute-as
address-family ipv4 [ unicast ]
peer { group-name | ipv4-address
[ mask-length ] } soo site-of-origin
Command
system-view
bfd echo-source-ip ip-address
route-policy route-policy-name
permit node node-number
218
Remarks
N/A
N/A
By default, BGP AS number
substitution is disabled.
N/A
By default, the SoO attribute is not
configured.
Remarks
N/A
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.
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.