View source for IPv6: Quagga: BGP Dua Link main backup

[[File:Bgp-multihoming.png|center|900px|thumb]]

Ada tiga (3) ISP

ISP1:
 IP 192.168.1.1/24 menuju ISP3
 IP 192.168.3.1/24 menuju ISP2
 AS 10
 IP 10.100.100.0/24
 IP 10.100.200.0/24

ISP2
 IP 192.168.2.1/24 - menuju ISP3
 IP 192.168.3.2/24 - menuju ISP1
 AS 20
 IP 10.10.10.0/24
 IP 10.10.20.0/24

ISP3 (kita)
 IP 192.168.1.2/24 - menuju ISP1
 IP 192.168.2.2/24 - menuju ISP2
 AS 30
 IP 10.1.1.0/24
 IP 10.1.2.0/24 


==Sambungan Fisik==

ISP1

 ISP1 eth0 -> ISP3 eth0
 ISP1 eth1 -> ISP2 eth1
 ISP2 eth0 -> ISP3 eth1
 
 ISP1 eth2 10.100.100.1/24
 ISP1 eth3 10.100.200.1/24
 
 ISP2 eth2 10.10.10.1/24
 ISP2 eth3 10.10.20.1/24
 
 ISP3 eth2 10.1.1.1/24
 ISP3 eth3 10.1.2.1/24

==Setup connection==

ISP1

 vtysh
 configure terminal
   interface eth0
     ip address 192.168.1.1/24
     ipv6 address 2001:192:168:1::1/64
     no shutdown
     exit
   interface eth1
     ip address 192.168.3.1/24
     ipv6 address 2001:192:168:3::1/64
     no shutdown
     exit
   interface eth2
     ip address 10.100.100.1/24
     ipv6 address 2001:10:100:100::1/64
     no shutdown
     exit
   interface eth3
     ip address 10.100.200.1/24
     ipv6 address 2001:10:100:200::1/64
     no shutdown
     exit
  end

ISP2

 vtysh
 configure terminal
   interface eth0
     ip address 192.168.2.1/24
     ipv6 address 2001:192:168:2::1/64
     no shutdown
     exit
   interface eth1
     ip address 192.168.3.2/24
     ipv6 address 2001:192:168:3::2/64
     no shutdown
     exit
   interface eth2
     ip address 10.10.10.1/24
     ipv6 address 2001:10:10:10::1/64
     no shutdown
     exit
   interface eth3
     ip address 10.10.20.1/24
     ipv6 address 2001:10:10:20::1/64
     no shutdown
     exit
  end

ISP3

 vtysh
 configure terminal
   interface eth0
     ip address 192.168.1.2/24
     ipv6 address 2001:192:168:1::2/64
     no shutdown
     exit
   interface eth1
     ip address 192.168.2.2/24
     ipv6 address 2001:192:168:2::2/64
     no shutdown
     exit
   interface eth2
     ip address 10.1.1.1/24
     ipv6 address 2001:10:1:1::1/64
     no shutdown
     exit
   interface eth3
     ip address 10.1.2.1/24
     ipv6 address 2001:10:1:2::1/64
     no shutdown
     exit
  end

==BGP Peering==

Consider that IP connectivity between ISPs edge routers and Our Core router is already set up and working properly. So we can start to establish BGP peering to both ISPs.


ISP1:
 
 vtysh
 configure terminal
   router bgp 10
   ! no bgp default ipv4-unicast
   bgp router-id 192.168.1.1
     !
     neighbor 2001:192:168:3::2 remote-as 20
       address-family ipv6 unicast
         network 2001:10:100:100::/64
         network 2001:10:100:200::/64
       neighbor 2001:192:168:3::2 activate 
     neighbor 192.168.3.2 remote-as 20
       ! address-family ipv4 unicast 
       network 10.100.100.0/24
       network 10.100.200.0/24
       neighbor 192.168.3.2 activate 
     !
     neighbor 2001:192:168:1::2 remote-as 30
       address-family ipv6 unicast
         network 2001:10:100:100::/64
         network 2001:10:100:200::/64
       neighbor 2001:192:168:1::2 activate 
     neighbor 192.168.1.2 remote-as 30
       network 10.100.100.0/24
       network 10.100.200.0/24
       neighbor 192.168.1.2 activate
   end


ISP2:

 vtysh
 configure terminal
   router bgp 20
   ! no bgp default ipv4-unicast
   bgp router-id 192.168.2.1
     neighbor 2001:192:168:3::1 remote-as 10
       address-family ipv6 unicast
         network 2001:10:10:10::/64
         network 2001:10:10:20::/64
       neighbor 2001:192:168:3::1 activate
     neighbor 192.168.3.1 remote-as 10
       ! address-family ipv4 unicast 
       network 10.10.10.0/24
       network 10.10.20.0/24
     !
     neighbor 2001:192:168:2::2 remote-as 30
       address-family ipv6 unicast
         network 2001:10:10:10::/64
         network 2001:10:10:20::/64
       neighbor 2001:192:168:2::2 activate 
     neighbor 192.168.2.2 remote-as 30
       ! address-family ipv4 unicast 
       network 10.10.10.0/24
       network 10.10.20.0/24
       neighbor 192.168.2.2 activate 
   end

==Main / Backup Link Setup di ISP3==

Lakukan
* accept network kita sendiri
* drop semua tabel IP lainnya, karena kita tidak mau menjadi transit provider
* BGP AS prepend - menaikan AS path ke salah satu ISP (disini ISP1)


ISP3:

 vtysh
 configure terminal
 router bgp 30
 ! no bgp default ipv4-unicast
 bgp router-id 192.168.1.2
 neighbor 2001:192:168:1::1 remote-as 10
 ipv6 bgp network 2001:10:1:1::/64
 ipv6 bgp network 2001:10:1:2::/64
 address-family ipv6 unicast
 network 2001:10:1:1::/64
 network 2001:10:1:2::/64
 exit
 neighbor 2001:192:168:1::1 activate
 no neighbor 2001:192:168:1::1 shutdown
 neighbor 2001:198:168:1::1 route-map PREPEND out
 route-map PREPEND permit 10
 set as-path prepend 30 30 30 30 30
 end

 vtysh
 configure terminal
 router bgp 30
 ! no bgp default ipv4-unicast
 bgp router-id 192.168.1.2
 neighbor 192.168.1.1 remote-as 10
 address-family ipv4 unicast 
 network 10.1.1.0/24
 network 10.1.2.0/24
 exit
 no neighbor 192.168.1.1 shutdown
 neighbor 192.168.1.1 activate
 neighbor 198.168.1.1 route-map PREPEND out
 route-map PREPEND permit 10
 set as-path prepend 30 30 30 30 30
 end

 vtysh
 configure terminal
 router bgp 30
 ! no bgp default ipv4-unicast
 bgp router-id 192.168.1.2
 neighbor 2001:192:168:2::1 remote-as 20
 address-family ipv6 unicast
 network 2001:10:1:1::/64
 network 2001:10:1:2::/64
 exit
 neighbor 2001:192:168:2::1 activate  
 neighbor 192.168.2.1 remote-as 20
 address-family ipv4 unicast 
 network 10.1.1.0/24
 network 10.1.2.0/24
 exit
 neighbor 192.168.2.1 activate
 end

==Cek==

 ! perhatikan AS 30 di tambahkan 5x ke routing ke arah AS 10
 !
 show ip bgp

 show ip route
 show ip bgp 10.100.1000.0/24
 show ip bgp neighbors 192.168.2.2 advertised-routes
 show ip bgp neighbor 192.168.1.1 routes
 show bgp ipv4 unicast neighbors 
 show bgp ipv4 unicast summary

 show ipv6 neighbors 
 show ipv6 route
 show bgp ipv6 unicast neighbors
 show bgp ipv6 unicast summary

==Referensi==

* https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/configuring-a-basic-bgp-network.html
* https://wiki.mikrotik.com/wiki/Manual:Simple_BGP_Multihoming

==Pranala Menarik==

* [[TCP/IP: Advanced Routing]]
* [[Quagga]]
* [[VyOS]]
* [[Mikrotik]]
* [[Cisco]]
* [[Juniper]]
* [[BIRD1]]
* [[BIRD2]]
* [[IPv6]]


* [[TCP/IP: Advanced Routing]]
* [[IPv6: Advanced Routing]]
* [[IPv6: Quagga]]
* [[IPv6: VyOS]]
* [[IPv6: Mikrotik]]
* [[IPv6: Cisco]]
* [[IPv6: Juniper]]
* [[IPv6: BIRD1]]
* [[IPv6: BIRD2]]
* [[IPv6]]