Huawei equipment configures private IP routing FRR

1. VPN In site configuration IP Address
   [PE-GigabitEthernet0/0/0]ip add 10.1.1.1 24
   [PE-GigabitEthernet0/0/2]ip add 10.2.1.1 24
   [CE1-GigabitEthernet0/0/0]ip add 10.1.1.2 24
   [CE1-GigabitEthernet0/0/1]ip add 10.3.1.2 24
   [CE2-GigabitEthernet0/0/0]ip add 10.2.1.3 24
   [CE2-GigabitEthernet0/0/1]ip add 10.4.1.3 24
   [AR4-LoopBack1]ip add 4.4.4.4 32
   [AR4-GigabitEthernet0/0/0]ip add 10.3.1.4 24
   [AR4-GigabitEthernet0/0/1]ip add 10.4.1.4 24
2. VPN In site configuration OSPF, bring AR4 Of Loopback Interface routes can be sent to CE1,CE2
   [CE1]ospf 1
   [CE1-ospf-1]area 0
   [CE1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
   [CE1-ospf-1-area-0.0.0.0]network 10.3.1.0 0.0.0.255
   [CE2]ospf 1
   [CE2-ospf-1]area 0
   [CE2-ospf-1-area-0.0.0.0]network 10.2.1.0 0.0.0.255
   [CE2-ospf-1-area-0.0.0.0]network 10.4.1.0 0.0.0.255
   [AR4]ospf 1
   [AR4-ospf-1]area 0
   [AR4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0
   [AR4-ospf-1-area-0.0.0.0]network 10.3.1.0 0.0.0.255
   [AR4-ospf-1-area-0.0.0.0]network 10.4.1.0 0.0.0.255
3. stay PE On the configuration VPN Examples and OSPF Multiple instances
   [PE]ip vpn-instance vpn1
   [PE-vpn-instance-vpn1]ipv4-family
   [PE-vpn-instance-vpn1-af-ipv4] route-distinguishe 100:1
   [PE-vpn-instance-vpn1-af-ipv4]vpn-target 1:1
   [PE-GigabitEthernet0/0/0]ip binding vpn-instance vpn1
   [PE-GigabitEthernet0/0/0]ip add 10.1.1.1 24
   [PE-GigabitEthernet0/0/1]ip binding vpn-instance vpn1
   [PE-GigabitEthernet0/0/1]ip add 10.2.1.1 24
   [PE]ospf vpn-instance vpn1 // To configure OSPF Multiple instances
   [PE-ospf-1]area 0
   [PE-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
   [PE-ospf-1-area-0.0.0.0]network 10.2.1.0 0.0.0.255
4. To configure OSPF Interface Cost value ,
   [PE-GigabitEthernet0/0/1]ospf cost 100 // stay PE Of g0/0/1 To configure Cost value , send OSPF Preferred link CE1
   [AR4-GigabitEthernet0/0/1]ospf cost 100
5. Configure routing policies , Configure backup next hop and backup out interface . Simultaneous configuration if-match term , Limit the scope of application .
   [PE]ip ip-prefix f1 permit 4.4.4.4 32
   [PE]route-policy f1 permit node 10
   [PE-route-policy]if-match ip-prefix f1
   [PE-route-policy]apply backup-nexthop 10.2.1.3
   [PE-route-policy]apply backup-interface g0/0/1
6. To configure BFD And IP FRR linkage
   [PE]bfd
   [PE]bfd f1 bind peer-ip 10.1.1.2 vpn-instance vpn1 interface g0/0/0
   [PE-bfd-session-f1]discriminator local 10
   [PE-bfd-session-f1]discriminator remote 20
   [PE-bfd-session-f1]commit
   [CE1]bfd
   [CE1]bfd f1 bind peer-ip 10.1.1.1 interface g0/0/0
   [CE1-bfd-session-f1]discriminator local 20
   [CE1-bfd-session-f1]discriminator remote 10
   [CE1-bfd-session-f1]commit
7. Enable private network IP FRR function
   [PE]ip vpn-instance vpn1
   [PE-vpn-instance-vpn1]ipv4-family
   [PE-vpn-instance-vpn1-af-ipv4]ip frr route-policy f1
8. Check the configuration
   

notice PE climb to 4.4.4.4/32 The next hop of the route is 10.1.1.2, And backup the next hop 、 Backup out interface
[CE1-GigabitEthernet0/0/1]shutdown