Difference between revisions of "Quagga: BGP Dua Link main backup - dengan as-path PREPEND dan MD5 Authentication"
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Line 30: | Line 30: | ||
− | ISP1 | + | ISP1 eth0 -> ISP3 eth0 |
− | ISP1 | + | ISP1 eth1 -> ISP2 eth1 |
− | ISP2 | + | ISP2 eth0 -> ISP3 eth1 |
− | ISP1 | + | ISP1 eth2 10.100.100.1/24 |
− | ISP1 | + | ISP1 eth3 10.100.200.1/24 |
− | ISP2 | + | ISP2 eth2 10.10.10.1/24 |
− | ISP2 | + | ISP2 eth3 10.10.20.1/24 |
− | ISP3 | + | ISP3 eth2 10.1.1.1/24 |
− | ISP3 | + | ISP3 eth3 10.1.2.1/24 |
Line 49: | Line 49: | ||
ISP1 | ISP1 | ||
− | + | vtysh | |
configure terminal | configure terminal | ||
− | interface | + | interface eth0 |
− | ip address 192.168.1.1 | + | ip address 192.168.1.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth1 |
− | ip address 192.168.3.1 | + | ip address 192.168.3.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth2 |
− | ip address 10.100.100.1 | + | ip address 10.100.100.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth3 |
− | ip address 10.100.200.1 | + | ip address 10.100.200.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
Line 71: | Line 71: | ||
ISP2 | ISP2 | ||
− | + | vtysh | |
configure terminal | configure terminal | ||
− | interface | + | interface eth0 |
− | ip address 192.168.2.1 | + | ip address 192.168.2.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth1 |
− | ip address 192.168.3.2 | + | ip address 192.168.3.2/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth2 |
− | ip address 10.10.10.1 | + | ip address 10.10.10.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth3 |
− | ip address 10.10.20.1 | + | ip address 10.10.20.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
Line 93: | Line 93: | ||
ISP3 | ISP3 | ||
− | + | vtysh | |
configure terminal | configure terminal | ||
− | interface | + | interface eth0 |
− | ip address 192.168.1.2 | + | ip address 192.168.1.2/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth1 |
− | ip address 192.168.2.2 | + | ip address 192.168.2.2/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth2 |
− | ip address 10.1.1.1 | + | ip address 10.1.1.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
− | interface | + | interface eth3 |
− | ip address 10.1.2.1 | + | ip address 10.1.2.1/24 |
no shutdown | no shutdown | ||
exit | exit | ||
Line 120: | Line 120: | ||
ISP1: | ISP1: | ||
− | + | vtysh | |
configure terminal | configure terminal | ||
router bgp 10 | router bgp 10 | ||
Line 126: | Line 126: | ||
no synchronization | no synchronization | ||
bgp log-neighbor-changes | bgp log-neighbor-changes | ||
− | + | network 10.100.100.0/24 | |
− | network 10.100.100.0 | + | network 10.100.200.0/24 |
− | network 10.100.200.0 | ||
neighbor 192.168.3.2 remote-as 20 | neighbor 192.168.3.2 remote-as 20 | ||
neighbor 192.168.1.2 remote-as 30 | neighbor 192.168.1.2 remote-as 30 | ||
neighbor 192.168.3.2 password $AP7i1 | neighbor 192.168.3.2 password $AP7i1 | ||
neighbor 192.168.1.2 password $AP7i1 | neighbor 192.168.1.2 password $AP7i1 | ||
− | |||
− | |||
− | |||
− | |||
end | end | ||
ISP2: | ISP2: | ||
− | + | vtysh | |
− | |||
configure terminal | configure terminal | ||
router bgp 20 | router bgp 20 | ||
Line 148: | Line 142: | ||
no synchronization | no synchronization | ||
bgp log-neighbor-changes | bgp log-neighbor-changes | ||
− | + | network 10.10.10.0/24 | |
− | network 10.10.10.0 | + | network 10.10.20.0/24 |
− | network 10.10.20.0 | ||
neighbor 192.168.3.1 remote-as 10 | neighbor 192.168.3.1 remote-as 10 | ||
neighbor 192.168.2.2 remote-as 30 | neighbor 192.168.2.2 remote-as 30 | ||
neighbor 192.168.3.1 password $AP7i1 | neighbor 192.168.3.1 password $AP7i1 | ||
neighbor 192.168.2.2 password $AP7i1 | neighbor 192.168.2.2 password $AP7i1 | ||
− | |||
− | |||
end | end | ||
Line 169: | Line 160: | ||
ISP3: | ISP3: | ||
− | + | vtysh | |
configure terminal | configure terminal | ||
router bgp 30 | router bgp 30 | ||
Line 175: | Line 166: | ||
no synchronization | no synchronization | ||
bgp log-neighbor-changes | bgp log-neighbor-changes | ||
− | + | network 10.1.1.0/24 | |
− | network 10.1.1.0 | + | network 10.1.2.0/24 |
− | network 10.1.2.0 | ||
neighbor 192.168.1.1 remote-as 10 | neighbor 192.168.1.1 remote-as 10 | ||
neighbor 198.168.1.1 route-map PREPEND out | neighbor 198.168.1.1 route-map PREPEND out | ||
Line 183: | Line 173: | ||
neighbor 192.168.1.1 password $AP7i1 | neighbor 192.168.1.1 password $AP7i1 | ||
neighbor 192.168.2.1 password $AP7i1 | neighbor 192.168.2.1 password $AP7i1 | ||
− | |||
− | |||
route-map PREPEND permit 10 | route-map PREPEND permit 10 | ||
set as-path prepend 30 30 30 30 30 | set as-path prepend 30 30 30 30 30 | ||
Line 209: | Line 197: | ||
==Pranala Menarik== | ==Pranala Menarik== | ||
− | |||
Revision as of 07:33, 11 January 2019
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 no shutdown exit interface eth1 ip address 192.168.3.1/24 no shutdown exit interface eth2 ip address 10.100.100.1/24 no shutdown exit interface eth3 ip address 10.100.200.1/24 no shutdown exit end
ISP2
vtysh configure terminal interface eth0 ip address 192.168.2.1/24 no shutdown exit interface eth1 ip address 192.168.3.2/24 no shutdown exit interface eth2 ip address 10.10.10.1/24 no shutdown exit interface eth3 ip address 10.10.20.1/24 no shutdown exit end
ISP3
vtysh configure terminal interface eth0 ip address 192.168.1.2/24 no shutdown exit interface eth1 ip address 192.168.2.2/24 no shutdown exit interface eth2 ip address 10.1.1.1/24 no shutdown exit interface eth3 ip address 10.1.2.1/24 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 bgp router-id 192.168.1.1 no synchronization bgp log-neighbor-changes network 10.100.100.0/24 network 10.100.200.0/24 neighbor 192.168.3.2 remote-as 20 neighbor 192.168.1.2 remote-as 30 neighbor 192.168.3.2 password $AP7i1 neighbor 192.168.1.2 password $AP7i1 end
ISP2:
vtysh configure terminal router bgp 20 bgp router-id 192.168.2.1 no synchronization bgp log-neighbor-changes network 10.10.10.0/24 network 10.10.20.0/24 neighbor 192.168.3.1 remote-as 10 neighbor 192.168.2.2 remote-as 30 neighbor 192.168.3.1 password $AP7i1 neighbor 192.168.2.2 password $AP7i1 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 bgp router-id 192.168.1.2 no synchronization bgp log-neighbor-changes network 10.1.1.0/24 network 10.1.2.0/24 neighbor 192.168.1.1 remote-as 10 neighbor 198.168.1.1 route-map PREPEND out neighbor 192.168.2.1 remote-as 20 neighbor 192.168.1.1 password $AP7i1 neighbor 192.168.2.1 password $AP7i1 route-map PREPEND permit 10 set as-path prepend 30 30 30 30 30 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
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