HP FlexNetwork 10500 Series Configuration Manual page 273

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When BFD detects that the LSP between PE 1 and PE 2 fails, traffic from CE 1 to CE 2 goes
through the path CE 1—PE 1—PE 3—CE 2.
Figure 72 Network diagram
VPN 1
Loop0
CE 1
Table 20 Interface and IP address assignment
Device
CE 1
PE 2
PE 3
Configuration procedure
1. Configure IP addresses and masks for interfaces as shown in
MPLS L3VPN. (Details not shown.)
For more information about configuring basic MPLS L3VPN, see
L3VPN."
2. Configure MPLS L3VPN FRR on PE 1:
# Create routing policy frr, and specify the backup next hop as 3.3.3.3 for the route to
4.4.4.4/32.
[PE1] ip prefix-list abc index 10 permit 4.4.4.4 32
[PE1] route-policy frr permit node 10
[PE1-route-policy] if-match ip address prefix-list abc
[PE1-route-policy] apply fast-reroute backup-nexthop 3.3.3.3
[PE1-route-policy] quit
# Configure FRR for VPN instance vpn1 to use routing policy frr.
[PE1] bgp 100
[PE1-bgp-default] ip vpn-instance vpn1
[PE1-bgp-default-vpn1] address-family ipv4 unicast
[PE1-bgp-default-ipv4-vpn1] fast-reroute route-policy frr
PE 1
Vlan-int11
Vlan-int10
Vlan-int12
Vlan-int10
Loop0
Interface IP address
Loop0 5.5.5.5/32
Vlan-int10 10.2.1.1/24
Loop0 2.2.2.2/32
Vlan-int11 172.1.1.2/24
Vlan-int13 10.1.1.2/24
Loop0 3.3.3.3/32
Vlan-int12 172.2.1.3/24
Vlan-int14 10.3.1.2/24
Loop0
PE 2
Vlan-int11 Vlan-int13
MPLS backbone
Vlan-int12 Vlan-int14
PE 3
Loop0
Device
PE 1
CE 2
264
VPN 1
Vlan-int13
Loop0
CE 2
Vlan-int14
Primary link
Backup link
Interface IP address
Loop0 1.1.1.1/32
Vlan-int10 10.2.1.2/24
Vlan-int11 172.1.1.1/24
Vlan-int12 172.2.1.1/24
Loop0 4.4.4.4/32
Vlan-int13 10.1.1.1/24
Vlan-int14 10.3.1.1/24
Table 20, and configure BGP and
"Configuring basic MPLS