R0106-HP MSR Router Series MPLS Configuration Guide(V7)

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Table 24 Interface and IP address assignment
Device Interface IP
address Device Interface IP address
CE 1 Loop0 5.5.5.5/32 PE 1 Loop0 1.1.1.1/32
GE2/1/1 10.2.1.1/24 GE2/1/1 10.2.1.2/24
PE 2 Loop0 2.2.2.2/32 GE2/1/2 172.1.1.1/24
GE2/1/1 172.1.1.2/24 GE2/1/3 172.2.1.1/24
GE2/1/2 10.1.1.2/24 CE 2 Loop0 4.4.4.4/32
PE 3 Loop0 3.3.3.3/32 GE2/1/1 10.1.1.1/24
GE2/1/1 172.2.1.3/24 GE2/1/2 10.3.1.1/24
GE2/1/2 10.3.1.2/24
Configuration procedure
1. Configure IP addresses and masks for interfaces as shown in Table 24, and configure BGP and
MPLS L3VPN. (Details not shown.)
For more information about configuring MPLS L3VPN, see "Configuring basic MPLS L3VPN."
2. Config
ure MPLS L3VPN FRR on PE 1:
# Configure BFD to test the connectivity of the LSP to 2.2.2.2/32.
<PE1> system-view
[PE1] mpls bfd enable
[PE1] mpls bfd 2.2.2.2 32
# 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 reference routing policy frr.
[PE1] bgp 100
[PE1-bgp] ip vpn-instance vpn1
[PE1-bgp-vpn1] address-family ipv4 unicast
[PE1-bgp-ipv4-vpn1] fast-reroute route-policy frr
[PE1-bgp-ipv4-vpn1] quit
[PE1-bgp-vpn1] quit
# Specify the preferred value as 100 for routes received from PE 2. This value is greater than the
preferred value (0) for routes from PE 3, so PE 1 prefers the routes from PE 2.
[PE1-bgp] address-family vpnv4
[PE1-bgp-vpnv4] peer 2.2.2.2 preferred-value 100
[PE1-bgp-vpnv4] quit
[PE1-bgp] quit
3. Enable MPLS BFD on PE 2.
<PE2> system-view
[PE2] mpls bfd enable