本文只是配置实例，并非实际应用场景，在实际场景用同级别RR之间应为full-mesh连接方式。
1 RP/0/0/CPU0:R1#show run 2 Thu Nov 26 14:20:19.667 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Thu Nov 26 13:59:27 2020 by admin 6 ! 7 hostname R1 8 line console 9 exec-timeout 0 0 10 ! 11 interface Loopback0 12 ipv4 address 1.1.1.1 255.255.255.255 13 ! 14 interface MgmtEth0/0/CPU0/0 15 shutdown 16 ! 17 interface GigabitEthernet0/0/0/0 18 ipv4 address 13.1.1.1 255.255.255.0 19 ! 20 interface GigabitEthernet0/0/0/1 21 ipv4 address 14.1.1.1 255.255.255.0 22 ! 23 route-policy SID($SID) 24 set label-index $SID 25 end-policy 26 ! 27 route-policy AIGP($METRIC) 28 set aigp-metric + $METRIC 29 pass 30 end-policy 31 ! 32 router static 33 address-family ipv4 unicast 34 13.1.1.3/32 GigabitEthernet0/0/0/0 35 14.1.1.4/32 GigabitEthernet0/0/0/1 36 ! 37 ! 38 router bgp 1 39 bgp router-id 1.1.1.1 40 mpls activate 41 interface GigabitEthernet0/0/0/0 42 interface GigabitEthernet0/0/0/1 43 ! 44 ibgp policy out enforce-modifications 45 address-family ipv4 unicast 46 maximum-paths ibgp 16 47 network 1.1.1.1/32 route-policy SID(1) 48 allocate-label all 49 ! 50 address-family vpnv4 unicast 51 retain route-target all 52 ! 53 neighbor-group rr-client 54 cluster-id 12 55 address-family ipv4 labeled-unicast 56 route-reflector-client 57 route-policy AIGP(10) out 58 next-hop-self 59 ! 60 ! 61 neighbor 5.5.5.5 62 remote-as 1 63 update-source Loopback0 64 address-family vpnv4 unicast 65 route-reflector-client 66 ! 67 ! 68 neighbor 8.8.8.8 69 remote-as 1 70 update-source Loopback0 71 address-family vpnv4 unicast 72 route-reflector-client 73 ! 74 ! 75 neighbor 13.1.1.3 76 remote-as 1 77 use neighbor-group rr-client 78 ! 79 neighbor 14.1.1.4 80 remote-as 1 81 use neighbor-group rr-client 82 ! 83 ! 84 segment-routing 85 global-block 16000 23999 86 ! 87 end
1 RP/0/0/CPU0:R2#show run 2 Thu Nov 26 14:22:51.776 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Thu Nov 26 13:59:44 2020 by admin 6 ! 7 hostname R2 8 line console 9 exec-timeout 0 0 10 ! 11 interface Loopback0 12 ipv4 address 2.2.2.2 255.255.255.255 13 ! 14 interface MgmtEth0/0/CPU0/0 15 shutdown 16 ! 17 interface GigabitEthernet0/0/0/0 18 ipv4 address 24.1.1.2 255.255.255.0 19 ! 20 interface GigabitEthernet0/0/0/1 21 ipv4 address 23.1.1.2 255.255.255.0 22 ! 23 route-policy SID($SID) 24 set label-index $SID 25 end-policy 26 ! 27 route-policy AIGP($METRIC) 28 set aigp-metric + $METRIC 29 pass 30 end-policy 31 ! 32 router static 33 address-family ipv4 unicast 34 23.1.1.3/32 GigabitEthernet0/0/0/1 35 24.1.1.4/32 GigabitEthernet0/0/0/0 36 ! 37 ! 38 router bgp 1 39 bgp router-id 2.2.2.2 40 mpls activate 41 interface GigabitEthernet0/0/0/0 42 interface GigabitEthernet0/0/0/1 43 ! 44 ibgp policy out enforce-modifications 45 address-family ipv4 unicast 46 maximum-paths ibgp 16 47 network 2.2.2.2/32 route-policy SID(2) 48 allocate-label all 49 ! 50 address-family vpnv4 unicast 51 retain route-target all 52 ! 53 neighbor-group rr-client 54 cluster-id 12 55 address-family ipv4 labeled-unicast 56 route-reflector-client 57 route-policy AIGP(10) out 58 next-hop-self 59 ! 60 ! 61 neighbor 5.5.5.5 62 remote-as 1 63 update-source Loopback0 64 address-family vpnv4 unicast 65 route-reflector-client 66 ! 67 ! 68 neighbor 8.8.8.8 69 remote-as 1 70 update-source Loopback0 71 address-family vpnv4 unicast 72 route-reflector-client 73 ! 74 ! 75 neighbor 23.1.1.3 76 remote-as 1 77 use neighbor-group rr-client 78 ! 79 neighbor 24.1.1.4 80 remote-as 1 81 use neighbor-group rr-client 82 ! 83 ! 84 segment-routing 85 global-block 16000 23999 86 ! 87 end
1 RP/0/0/CPU0:R3#show run 2 Thu Nov 26 14:23:49.772 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Thu Nov 26 05:22:12 2020 by admin 6 ! 7 hostname R3 8 line console 9 exec-timeout 0 0 10 ! 11 interface Loopback0 12 ipv4 address 3.3.3.3 255.255.255.255 13 ! 14 interface MgmtEth0/0/CPU0/0 15 shutdown 16 ! 17 interface GigabitEthernet0/0/0/0 18 ipv4 address 13.1.1.3 255.255.255.0 19 ! 20 interface GigabitEthernet0/0/0/1 21 ipv4 address 23.1.1.3 255.255.255.0 22 ! 23 interface GigabitEthernet0/0/0/2 24 ipv4 address 35.1.1.3 255.255.255.0 25 ! 26 interface GigabitEthernet0/0/0/3 27 ipv4 address 36.1.1.3 255.255.255.0 28 ! 29 interface GigabitEthernet0/0/0/4 30 ipv4 address 37.1.1.3 255.255.255.0 31 ! 32 interface GigabitEthernet0/0/0/5 33 ipv4 address 38.1.1.3 255.255.255.0 34 ! 35 route-policy SID($SID) 36 set label-index $SID 37 end-policy 38 ! 39 route-policy AIGP($METRIC) 40 set aigp-metric + $METRIC 41 pass 42 end-policy 43 ! 44 router static 45 address-family ipv4 unicast 46 13.1.1.1/32 GigabitEthernet0/0/0/0 47 23.1.1.2/32 GigabitEthernet0/0/0/1 48 35.1.1.5/32 GigabitEthernet0/0/0/2 49 36.1.1.6/32 GigabitEthernet0/0/0/3 50 37.1.1.7/32 GigabitEthernet0/0/0/4 51 38.1.1.8/32 GigabitEthernet0/0/0/5 52 ! 53 ! 54 router bgp 1 55 bgp router-id 3.3.3.3 56 bgp cluster-id 34 57 mpls activate 58 interface GigabitEthernet0/0/0/0 59 interface GigabitEthernet0/0/0/1 60 interface GigabitEthernet0/0/0/2 61 interface GigabitEthernet0/0/0/3 62 interface GigabitEthernet0/0/0/4 63 interface GigabitEthernet0/0/0/5 64 ! 65 ibgp policy out enforce-modifications 66 address-family ipv4 unicast 67 maximum-paths ibgp 16 68 network 3.3.3.3/32 route-policy SID(3) 69 allocate-label all 70 ! 71 neighbor-group ibgp 72 address-family ipv4 labeled-unicast 73 route-policy AIGP(10) out 74 next-hop-self 75 ! 76 ! 77 neighbor-group rr-client 78 address-family ipv4 labeled-unicast 79 route-reflector-client 80 route-policy AIGP(10) out 81 next-hop-self 82 ! 83 ! 84 neighbor 13.1.1.1 85 remote-as 1 86 use neighbor-group ibgp 87 ! 88 neighbor 23.1.1.2 89 remote-as 1 90 use neighbor-group ibgp 91 ! 92 neighbor 35.1.1.5 93 remote-as 1 94 use neighbor-group rr-client 95 ! 96 neighbor 36.1.1.6 97 remote-as 1 98 use neighbor-group rr-client 99 ! 100 neighbor 37.1.1.7 101 remote-as 1 102 use neighbor-group rr-client 103 ! 104 neighbor 38.1.1.8 105 remote-as 1 106 use neighbor-group rr-client 107 ! 108 ! 109 segment-routing 110 global-block 16000 23999 111 ! 112 end
1 RP/0/0/CPU0:R4#show run 2 Thu Nov 26 14:24:23.760 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Thu Nov 26 05:22:39 2020 by admin 6 ! 7 hostname R4 8 line console 9 exec-timeout 0 0 10 ! 11 interface Loopback0 12 ipv4 address 4.4.4.4 255.255.255.255 13 ! 14 interface MgmtEth0/0/CPU0/0 15 shutdown 16 ! 17 interface GigabitEthernet0/0/0/0 18 ipv4 address 24.1.1.4 255.255.255.0 19 ! 20 interface GigabitEthernet0/0/0/1 21 ipv4 address 14.1.1.4 255.255.255.0 22 ! 23 interface GigabitEthernet0/0/0/2 24 ipv4 address 45.1.1.4 255.255.255.0 25 ! 26 interface GigabitEthernet0/0/0/3 27 ipv4 address 46.1.1.4 255.255.255.0 28 ! 29 interface GigabitEthernet0/0/0/4 30 ipv4 address 47.1.1.4 255.255.255.0 31 ! 32 interface GigabitEthernet0/0/0/5 33 ipv4 address 48.1.1.4 255.255.255.0 34 ! 35 route-policy SID($SID) 36 set label-index $SID 37 end-policy 38 ! 39 route-policy AIGP($METRIC) 40 set aigp-metric + $METRIC 41 pass 42 end-policy 43 ! 44 router static 45 address-family ipv4 unicast 46 14.1.1.1/32 GigabitEthernet0/0/0/1 47 24.1.1.2/32 GigabitEthernet0/0/0/0 48 45.1.1.5/32 GigabitEthernet0/0/0/2 49 46.1.1.6/32 GigabitEthernet0/0/0/3 50 47.1.1.7/32 GigabitEthernet0/0/0/4 51 48.1.1.8/32 GigabitEthernet0/0/0/5 52 ! 53 ! 54 router bgp 1 55 bgp router-id 4.4.4.4 56 bgp cluster-id 34 57 mpls activate 58 interface GigabitEthernet0/0/0/0 59 interface GigabitEthernet0/0/0/1 60 interface GigabitEthernet0/0/0/2 61 interface GigabitEthernet0/0/0/3 62 interface GigabitEthernet0/0/0/4 63 interface GigabitEthernet0/0/0/5 64 ! 65 ibgp policy out enforce-modifications 66 address-family ipv4 unicast 67 maximum-paths ibgp 16 68 network 4.4.4.4/32 route-policy SID(4) 69 allocate-label all 70 ! 71 neighbor-group ibgp 72 address-family ipv4 labeled-unicast 73 route-policy AIGP(10) out 74 next-hop-self 75 ! 76 ! 77 neighbor-group rr-client 78 address-family ipv4 labeled-unicast 79 route-reflector-client 80 route-policy AIGP(10) out 81 next-hop-self 82 ! 83 ! 84 neighbor 14.1.1.1 85 remote-as 1 86 use neighbor-group ibgp 87 ! 88 neighbor 24.1.1.2 89 remote-as 1 90 use neighbor-group ibgp 91 ! 92 neighbor 45.1.1.5 93 remote-as 1 94 use neighbor-group rr-client 95 ! 96 neighbor 46.1.1.6 97 remote-as 1 98 use neighbor-group rr-client 99 ! 100 neighbor 47.1.1.7 101 remote-as 1 102 use neighbor-group rr-client 103 ! 104 neighbor 48.1.1.8 105 remote-as 1 106 use neighbor-group rr-client 107 ! 108 ! 109 segment-routing 110 global-block 16000 23999 111 ! 112 end
1 RP/0/0/CPU0:R5#show run 2 Thu Nov 26 14:25:02.537 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Thu Nov 26 13:56:57 2020 by admin 6 ! 7 hostname R5 8 vrf A 9 address-family ipv4 unicast 10 import route-target 11 1:1 12 ! 13 export route-target 14 1:1 15 ! 16 ! 17 ! 18 line console 19 exec-timeout 0 0 20 ! 21 interface Loopback0 22 ipv4 address 5.5.5.5 255.255.255.255 23 ! 24 interface Loopback1 25 vrf A 26 ipv4 address 55.55.55.55 255.255.255.255 27 ! 28 interface MgmtEth0/0/CPU0/0 29 shutdown 30 ! 31 interface GigabitEthernet0/0/0/0 32 ipv4 address 35.1.1.5 255.255.255.0 33 ! 34 interface GigabitEthernet0/0/0/1 35 ipv4 address 45.1.1.5 255.255.255.0 36 ! 37 route-policy SID($SID) 38 set label-index $SID 39 end-policy 40 ! 41 route-policy AIGP($METRIC) 42 set aigp-metric + $METRIC 43 pass 44 end-policy 45 ! 46 router static 47 address-family ipv4 unicast 48 35.1.1.3/32 GigabitEthernet0/0/0/0 49 45.1.1.4/32 GigabitEthernet0/0/0/1 50 ! 51 ! 52 router bgp 1 53 bgp router-id 5.5.5.5 54 mpls activate 55 interface GigabitEthernet0/0/0/0 56 interface GigabitEthernet0/0/0/1 57 ! 58 address-family ipv4 unicast 59 maximum-paths ibgp 16 60 network 5.5.5.5/32 route-policy SID(5) 61 allocate-label all 62 ! 63 address-family vpnv4 unicast 64 ! 65 neighbor-group ibgp 66 address-family ipv4 labeled-unicast 67 route-policy AIGP(10) out 68 next-hop-self 69 ! 70 ! 71 neighbor 1.1.1.1 72 remote-as 1 73 update-source Loopback0 74 address-family vpnv4 unicast 75 ! 76 ! 77 neighbor 2.2.2.2 78 remote-as 1 79 update-source Loopback0 80 address-family vpnv4 unicast 81 ! 82 ! 83 neighbor 35.1.1.3 84 remote-as 1 85 use neighbor-group ibgp 86 ! 87 neighbor 45.1.1.4 88 remote-as 1 89 use neighbor-group ibgp 90 ! 91 vrf A 92 rd auto 93 address-family ipv4 unicast 94 maximum-paths ibgp 16 95 network 55.55.55.55/32 96 ! 97 ! 98 ! 99 segment-routing 100 global-block 16000 23999 101 ! 102 end
1 RP/0/0/CPU0:R6#show run 2 Thu Nov 26 14:25:32.305 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Tue Nov 24 12:41:33 2020 by admin 6 ! 7 hostname R6 8 line console 9 exec-timeout 0 0 10 ! 11 interface Loopback0 12 ipv4 address 6.6.6.6 255.255.255.255 13 ! 14 interface MgmtEth0/0/CPU0/0 15 shutdown 16 ! 17 interface GigabitEthernet0/0/0/0 18 ipv4 address 36.1.1.6 255.255.255.0 19 ! 20 interface GigabitEthernet0/0/0/1 21 ipv4 address 46.1.1.6 255.255.255.0 22 ! 23 route-policy SID($SID) 24 set label-index $SID 25 end-policy 26 ! 27 route-policy AIGP($METRIC) 28 set aigp-metric + $METRIC 29 pass 30 end-policy 31 ! 32 router static 33 address-family ipv4 unicast 34 36.1.1.3/32 GigabitEthernet0/0/0/0 35 46.1.1.4/32 GigabitEthernet0/0/0/1 36 ! 37 ! 38 router bgp 1 39 bgp router-id 6.6.6.6 40 mpls activate 41 interface GigabitEthernet0/0/0/0 42 interface GigabitEthernet0/0/0/1 43 ! 44 address-family ipv4 unicast 45 maximum-paths ibgp 16 46 network 6.6.6.6/32 route-policy SID(6) 47 allocate-label all 48 ! 49 neighbor-group ibgp 50 address-family ipv4 labeled-unicast 51 route-policy AIGP(10) out 52 next-hop-self 53 ! 54 ! 55 neighbor 36.1.1.3 56 remote-as 1 57 use neighbor-group ibgp 58 ! 59 neighbor 46.1.1.4 60 remote-as 1 61 use neighbor-group ibgp 62 ! 63 ! 64 segment-routing 65 global-block 16000 23999 66 ! 67 end
1 RP/0/0/CPU0:R7#show run 2 Thu Nov 26 14:26:07.063 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Tue Nov 24 12:30:47 2020 by admin 6 ! 7 hostname R7 8 line console 9 exec-timeout 0 0 10 ! 11 interface Loopback0 12 ipv4 address 7.7.7.7 255.255.255.255 13 ! 14 interface MgmtEth0/0/CPU0/0 15 shutdown 16 ! 17 interface GigabitEthernet0/0/0/0 18 ipv4 address 37.1.1.7 255.255.255.0 19 ! 20 interface GigabitEthernet0/0/0/1 21 ipv4 address 47.1.1.7 255.255.255.0 22 ! 23 route-policy SID($SID) 24 set label-index $SID 25 end-policy 26 ! 27 route-policy AIGP($METRIC) 28 set aigp-metric + $METRIC 29 pass 30 end-policy 31 ! 32 router static 33 address-family ipv4 unicast 34 37.1.1.3/32 GigabitEthernet0/0/0/0 35 47.1.1.4/32 GigabitEthernet0/0/0/1 36 ! 37 ! 38 router bgp 1 39 bgp router-id 7.7.7.7 40 mpls activate 41 interface GigabitEthernet0/0/0/0 42 interface GigabitEthernet0/0/0/1 43 ! 44 address-family ipv4 unicast 45 maximum-paths ibgp 16 46 network 7.7.7.7/32 route-policy SID(7) 47 allocate-label all 48 ! 49 neighbor-group ibgp 50 address-family ipv4 labeled-unicast 51 route-policy AIGP(10) out 52 next-hop-self 53 ! 54 ! 55 neighbor 37.1.1.3 56 remote-as 1 57 use neighbor-group ibgp 58 ! 59 neighbor 47.1.1.4 60 remote-as 1 61 use neighbor-group ibgp 62 ! 63 ! 64 segment-routing 65 global-block 16000 23999 66 ! 67 end
1 RP/0/0/CPU0:R8#show run 2 Thu Nov 26 14:26:54.729 UTC 3 Building configuration... 4 !! IOS XR Configuration 6.1.3 5 !! Last configuration change at Thu Nov 26 13:58:49 2020 by admin 6 ! 7 hostname R8 8 vrf A 9 address-family ipv4 unicast 10 import route-target 11 1:1 12 ! 13 export route-target 14 1:1 15 ! 16 ! 17 ! 18 line console 19 exec-timeout 0 0 20 ! 21 interface Loopback0 22 ipv4 address 8.8.8.8 255.255.255.255 23 ! 24 interface Loopback1 25 vrf A 26 ipv4 address 88.88.88.88 255.255.255.255 27 ! 28 interface MgmtEth0/0/CPU0/0 29 shutdown 30 ! 31 interface GigabitEthernet0/0/0/0 32 ipv4 address 38.1.1.8 255.255.255.0 33 ! 34 interface GigabitEthernet0/0/0/1 35 ipv4 address 48.1.1.8 255.255.255.0 36 ! 37 route-policy SID($SID) 38 set label-index $SID 39 end-policy 40 ! 41 route-policy AIGP($METRIC) 42 set aigp-metric + $METRIC 43 pass 44 end-policy 45 ! 46 router static 47 address-family ipv4 unicast 48 38.1.1.3/32 GigabitEthernet0/0/0/0 49 48.1.1.4/32 GigabitEthernet0/0/0/1 50 ! 51 ! 52 router bgp 1 53 bgp router-id 8.8.8.8 54 mpls activate 55 interface GigabitEthernet0/0/0/0 56 interface GigabitEthernet0/0/0/1 57 ! 58 address-family ipv4 unicast 59 maximum-paths ibgp 16 60 network 8.8.8.8/32 route-policy SID(8) 61 allocate-label all 62 ! 63 address-family vpnv4 unicast 64 ! 65 neighbor-group ibgp 66 address-family ipv4 labeled-unicast 67 route-policy AIGP(10) out 68 next-hop-self 69 ! 70 ! 71 neighbor 1.1.1.1 72 remote-as 1 73 update-source Loopback0 74 address-family vpnv4 unicast 75 ! 76 ! 77 neighbor 2.2.2.2 78 remote-as 1 79 update-source Loopback0 80 address-family vpnv4 unicast 81 ! 82 ! 83 neighbor 38.1.1.3 84 remote-as 1 85 use neighbor-group ibgp 86 ! 87 neighbor 48.1.1.4 88 remote-as 1 89 use neighbor-group ibgp 90 ! 91 vrf A 92 rd auto 93 address-family ipv4 unicast 94 maximum-paths ibgp 16 95 network 88.88.88.88/32 96 ! 97 ! 98 ! 99 segment-routing 100 global-block 16000 23999 101 ! 102 end