Kita akan ngelab IBGP dengan menggunakan Route Reflector.. berikut topologi yang akan kita gunakan
Oke langsung saja, Diasumsikan kita sudah konfigurasi OSPF ya.. nanti hasilnya harus nya seperti ini..
RP/0/0/CPU0:IOS-XR1(config-ospf-ar-if)#do sh route ospf Mon Jun 5 01:24:16.743 UTC O 2.2.2.2/32 [110/2] via 12.12.12.2, 00:02:03, GigabitEthernet0/0/0/0 O 3.3.3.3/32 [110/3] via 12.12.12.2, 00:00:59, GigabitEthernet0/0/0/0 O 4.4.4.4/32 [110/4] via 12.12.12.2, 00:00:06, GigabitEthernet0/0/0/0 O 23.23.23.0/24 [110/2] via 12.12.12.2, 00:02:03, GigabitEthernet0/0/0/0 O 34.34.34.0/24 [110/3] via 12.12.12.2, 00:00:59, GigabitEthernet0/0/0/0
RP/0/0/CPU0:IOS-XR2(config-ospf-ar-if)#do sh route ospf Mon Jun 5 01:24:41.661 UTC O 1.1.1.1/32 [110/2] via 12.12.12.1, 00:02:27, GigabitEthernet0/0/0/0 O 3.3.3.3/32 [110/2] via 23.23.23.3, 00:01:28, GigabitEthernet0/0/0/1 O 4.4.4.4/32 [110/3] via 23.23.23.3, 00:00:30, GigabitEthernet0/0/0/1 O 34.34.34.0/24 [110/2] via 23.23.23.3, 00:01:28, GigabitEthernet0/0/0/1
RP/0/0/CPU0:IOS-XR3(config-ospf-ar-if)#do sh route ospf Mon Jun 5 01:24:57.810 UTC O 1.1.1.1/32 [110/3] via 23.23.23.2, 00:01:44, GigabitEthernet0/0/0/0 O 2.2.2.2/32 [110/2] via 23.23.23.2, 00:01:44, GigabitEthernet0/0/0/0 O 4.4.4.4/32 [110/2] via 34.34.34.4, 00:00:52, GigabitEthernet0/0/0/1 O 12.12.12.0/24 [110/2] via 23.23.23.2, 00:01:44, GigabitEthernet0/0/0/0
Kalau masih ada yang belum bisa konfigurasi OSPF di IOS XR, bisa merujuk ke artikel berikut ya : Konfigurasi OSPF di IOS XRRP/0/0/CPU0:IOS-XR4(config-ospf-ar-if)#do sh route ospf Mon Jun 5 01:25:11.609 UTC O 1.1.1.1/32 [110/4] via 34.34.34.3, 00:01:06, GigabitEthernet0/0/0/0 O 2.2.2.2/32 [110/3] via 34.34.34.3, 00:01:06, GigabitEthernet0/0/0/0 O 3.3.3.3/32 [110/2] via 34.34.34.3, 00:01:06, GigabitEthernet0/0/0/0 O 12.12.12.0/24 [110/3] via 34.34.34.3, 00:01:06, GigabitEthernet0/0/0/0 O 23.23.23.0/24 [110/2] via 34.34.34.3, 00:01:06, GigabitEthernet0/0/0/0
Oke.. setelah konfigurasi OSPF selesai.. pastikan masing-masing router bisa ping ke loopback0 dari router lain ya.. kita coba ping dari IOS-XR1 ke loopback0 IOS-XR2-4
Oke sudah jalan semua ya.. sekarang saatnya kita mengkonfigurasi IBGP... pada topologi ini IOS-XR4 akan menjadi Route Reflector ya.. jadi nanti IOS-XR1, 2, dan 3 hanya perlua peering ke IOS-XR4..RP/0/0/CPU0:IOS-XR1(config-ospf-ar-if)#do ping 2.2.2.2 Mon Jun 5 01:26:51.382 UTC Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms RP/0/0/CPU0:IOS-XR1(config-ospf-ar-if)#do ping 3.3.3.3 Mon Jun 5 01:26:53.402 UTC Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/6/19 ms RP/0/0/CPU0:IOS-XR1(config-ospf-ar-if)#do ping 4.4.4.4 Mon Jun 5 01:26:55.782 UTC Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/5/9 ms
Oke langsung saja.. berikut konfigurasi di IOS-XR1
Berikut konfigurasi di IOS-XR2RP/0/0/CPU0:IOS-XR1(config)#router bgp 1234 RP/0/0/CPU0:IOS-XR1(config-bgp)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR1(config-bgp-af)#network 11.11.11.11/32 RP/0/0/CPU0:IOS-XR1(config-bgp-af)#exit RP/0/0/CPU0:IOS-XR1(config-bgp)#nei 4.4.4.4 RP/0/0/CPU0:IOS-XR1(config-bgp-nbr)#remote-as 1234 RP/0/0/CPU0:IOS-XR1(config-bgp-nbr)#update-source lo0 RP/0/0/CPU0:IOS-XR1(config-bgp-nbr)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR1(config-bgp-nbr-af)#commit
Berikut konfigurasi di IOS-XR3RP/0/0/CPU0:IOS-XR2(config-ospf-ar-if)#router bgp 1234 RP/0/0/CPU0:IOS-XR2(config-bgp)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR2(config-bgp-af)#net 22.22.22.22/32 RP/0/0/CPU0:IOS-XR2(config-bgp-af)#exit RP/0/0/CPU0:IOS-XR2(config-bgp)#nei 4.4.4.4 RP/0/0/CPU0:IOS-XR2(config-bgp-nbr)#remote-as 1234 RP/0/0/CPU0:IOS-XR2(config-bgp-nbr)#update-sou lo0 RP/0/0/CPU0:IOS-XR2(config-bgp-nbr)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR2(config-bgp-nbr-af)#commit
Berikut konfigurasi di IOS-XR4.. pada IOS-XR4 ini kita akan konfiguruasi peering group ya.. karena IOS-XR4 harus peering ke 3 router.. kalau peering satu-satu kelamaan.. jadi lebih baik pake group ajaRP/0/0/CPU0:IOS-XR3(config-ospf-ar-if)#router bgp 1234 RP/0/0/CPU0:IOS-XR3(config-bgp)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR3(config-bgp-af)#net 33.33.33.33/32 RP/0/0/CPU0:IOS-XR3(config-bgp-af)#exit RP/0/0/CPU0:IOS-XR3(config-bgp)#nei 4.4.4.4 RP/0/0/CPU0:IOS-XR3(config-bgp-nbr)#remote-as 1234 RP/0/0/CPU0:IOS-XR3(config-bgp-nbr)#update-sou lo0 RP/0/0/CPU0:IOS-XR3(config-bgp-nbr)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR3(config-bgp-nbr-af)#commit
Oke untuk pengujian, kita bisa menggunakan perintah berikutRP/0/0/CPU0:IOS-XR4(config)#router bgp 1234 RP/0/0/CPU0:IOS-XR4(config-bgp)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR4(config-bgp-af)#net 44.44.44.44/32 RP/0/0/CPU0:IOS-XR4(config-bgp-af)#exit RP/0/0/CPU0:IOS-XR4(config-bgp)#neighbor-group IBGP RP/0/0/CPU0:IOS-XR4(config-bgp-nbrgrp)#remote-as 1234 RP/0/0/CPU0:IOS-XR4(config-bgp-nbrgrp)#update-source lo0 RP/0/0/CPU0:IOS-XR4(config-bgp-nbrgrp)#address-family ipv4 unicast RP/0/0/CPU0:IOS-XR4(config-bgp-nbrgrp-af)#route-reflector-client RP/0/0/CPU0:IOS-XR4(config-bgp-nbrgrp-af)#exit RP/0/0/CPU0:IOS-XR4(config-bgp-nbrgrp)#exit RP/0/0/CPU0:IOS-XR4(config-bgp)#neigh 1.1.1.1 RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#use neighbor-group IBGP RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#nei 2.2.2.2 RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#use neighbor-group IBGP RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#nei 3.3.3.3 RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#use neighbor-group IBGP RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#commit
Perhatikan bahwa IOS-XR1 sudah menerima 3 prefix dari IOS-XR4.. kita coba lihat prefix berapa saja yang dimaksudRP/0/0/CPU0:IOS-XR1(config-if)#do sh bgp sum Mon Jun 5 01:50:04.631 UTC BGP router identifier 1.1.1.1, local AS number 1234 BGP generic scan interval 60 secs Non-stop routing is enabled BGP table state: Active Table ID: 0xe0000000 RD version: 6 BGP main routing table version 6 BGP NSR Initial initsync version 2 (Not Reached) BGP NSR/ISSU Sync-Group versions 0/0 BGP scan interval 60 secs BGP is operating in STANDALONE mode. Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer Speaker 6 6 6 6 6 0 Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd 4.4.4.4 0 1234 9 5 6 0 0 00:01:21 3
Perhatikan bahwa IOS-XR1 sudah menerima prefix yang lengkap.. kita coba lihat yang di Route Reflector yaRP/0/0/CPU0:IOS-XR1(config-if)#do sh bgp Mon Jun 5 01:51:25.296 UTC BGP router identifier 1.1.1.1, local AS number 1234 BGP generic scan interval 60 secs Non-stop routing is enabled BGP table state: Active Table ID: 0xe0000000 RD version: 6 BGP main routing table version 6 BGP NSR Initial initsync version 2 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 BGP scan interval 60 secs Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 11.11.11.11/32 0.0.0.0 0 32768 i *>i22.22.22.22/32 2.2.2.2 0 100 0 i *>i33.33.33.33/32 3.3.3.3 0 100 0 i *>i44.44.44.44/32 4.4.4.4 0 100 0 i Processed 4 prefixes, 4 paths
Route Reflector peering dengan tiga router lainnya., dan menerima 1 prefix dari setiap router.. kita coba lihat prefix berapa saja yg diterima oleh IOS-XR4RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#do sh bgp sum Mon Jun 5 01:52:49.450 UTC BGP router identifier 4.4.4.4, local AS number 1234 BGP generic scan interval 60 secs Non-stop routing is enabled BGP table state: Active Table ID: 0xe0000000 RD version: 6 BGP main routing table version 6 BGP NSR Initial initsync version 2 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 BGP scan interval 60 secs BGP is operating in STANDALONE mode. Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer Speaker 6 6 6 6 6 0 Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd 1.1.1.1 0 1234 8 12 6 0 0 00:04:06 1 2.2.2.2 0 1234 11 14 6 0 0 00:07:01 1 3.3.3.3 0 1234 11 15 6 0 0 00:07:03 1
Oke lengkap ya...RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#do sh bgp Mon Jun 5 01:53:41.046 UTC BGP router identifier 4.4.4.4, local AS number 1234 BGP generic scan interval 60 secs Non-stop routing is enabled BGP table state: Active Table ID: 0xe0000000 RD version: 6 BGP main routing table version 6 BGP NSR Initial initsync version 2 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 BGP scan interval 60 secs Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *>i11.11.11.11/32 1.1.1.1 0 100 0 i *>i22.22.22.22/32 2.2.2.2 0 100 0 i *>i33.33.33.33/32 3.3.3.3 0 100 0 i *> 44.44.44.44/32 0.0.0.0 0 32768 i Processed 4 prefixes, 4 paths
Untuk pengujian selanjutnya kita bisa mencoba untuk melihat tabel routing.. berikut tabel routing di IOS-XR1
Berikut tabel routing di IOS-XR2RP/0/0/CPU0:IOS-XR1(config-if)#do sh route bgp Mon Jun 5 01:54:26.033 UTC B 22.22.22.22/32 [200/0] via 2.2.2.2, 00:05:37 B 33.33.33.33/32 [200/0] via 3.3.3.3, 00:05:37 B 44.44.44.44/32 [200/0] via 4.4.4.4, 00:05:37
Berikut tabel routing BGP di IOS-XR3RP/0/0/CPU0:IOS-XR2#sh route bgp Mon Jun 5 01:54:59.551 UTC B 11.11.11.11/32 [200/0] via 1.1.1.1, 00:06:11 B 33.33.33.33/32 [200/0] via 3.3.3.3, 00:07:13 B 44.44.44.44/32 [200/0] via 4.4.4.4, 00:07:13
Berikut tabel routing BGP di IOS-XR4RP/0/0/CPU0:IOS-XR3#sh route bgp Mon Jun 5 01:55:27.709 UTC B 11.11.11.11/32 [200/0] via 1.1.1.1, 00:06:39 B 22.22.22.22/32 [200/0] via 2.2.2.2, 00:07:41 B 44.44.44.44/32 [200/0] via 4.4.4.4, 00:07:41
Oke.. sudah lengkap semua kan ya...RP/0/0/CPU0:IOS-XR4(config-bgp-nbr)#do sh route bgp Mon Jun 5 01:55:48.918 UTC B 11.11.11.11/32 [200/0] via 1.1.1.1, 00:07:00 B 22.22.22.22/32 [200/0] via 2.2.2.2, 00:08:02 B 33.33.33.33/32 [200/0] via 3.3.3.3, 00:08:02
Pengujain terahir, kita coba lakukan ping yaa.. Berikut percobaan ping dari IOS-XR1 ke loopback router lainnya
Oke jalan semua ya....RP/0/0/CPU0:IOS-XR1(config-if)#do ping 22.22.22.22 sou l1 Mon Jun 5 01:56:32.855 UTC Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 22.22.22.22, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/9 ms RP/0/0/CPU0:IOS-XR1(config-if)#do ping 33.33.33.33 sou l1 Mon Jun 5 01:56:37.354 UTC Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 33.33.33.33, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms RP/0/0/CPU0:IOS-XR1(config-if)#do ping 44.44.44.44 sou l1 Mon Jun 5 01:56:41.684 UTC Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 44.44.44.44, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/9 ms
Alhamdulillah Lab IBGP pada IOS XR kita sudah selesai... In Syaa Allah selanjutnya kita masih akan membahas tentang IBGP pada IOS XR.. namun menggunakan Confederation.. Oke sampai ketemu di artikel selanjutnya yaaa
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