Difference between revisions of "Mikrotik: BGP Dua Link main backup"
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#add BGP peers | #add BGP peers | ||
/routing bgp peer | /routing bgp peer | ||
| + | add name=toISP2 remote-address=192.168.3.2 remote-as=20 | ||
add name=toISP3 remote-address=192.168.1.2 remote-as=30 | add name=toISP3 remote-address=192.168.1.2 remote-as=30 | ||
| − | add name=toISP2 remote-address=192.168.3.2 remote-as=20 | + | # jika ingin redistribute default route ke client yang spesifik |
| − | + | # add name=toISP2 remote-address=192.168.3.2 remote-as=20 default-originate=if-installed | |
| + | # add name=toISP3 remote-address=192.168.1.2 remote-as=30 default-originate=if-installed | ||
| + | # | ||
| + | # advertize routing | ||
| + | # | ||
| + | /routing bgp network | ||
| + | add network=10.100.100.0/24 synchronize=no | ||
| + | add network=10.100.200.0/24 synchronize=no | ||
ISP2: | ISP2: | ||
| Line 91: | Line 99: | ||
add name=toISP1 remote-address=192.168.3.1 remote-as=10 | add name=toISP1 remote-address=192.168.3.1 remote-as=10 | ||
add name=toISP3 remote-address=192.168.2.2 remote-as=30 | add name=toISP3 remote-address=192.168.2.2 remote-as=30 | ||
| + | # | ||
| + | # advertize routing | ||
| + | # | ||
| + | /routing bgp network | ||
| + | add network=10.10.10.0/24 synchronize=no | ||
| + | add network=10.10.20.0/24 synchronize=no | ||
| − | + | ISP3: | |
| − | ISP3 | + | #set our AS number |
| + | /routing bgp instance set default as=30 | ||
| + | #add BGP peers | ||
| + | /routing bgp peer | ||
| + | add name=toISP1 remote-address=192.168.1.1 remote-as=10 | ||
| + | add name=toISP2 remote-address=192.168.2.1 remote-as=20 | ||
| + | # | ||
| + | # advertize routing | ||
| + | # | ||
| + | /routing bgp network | ||
| + | add network=10.1.1.0/24 synchronize=no | ||
| + | add network=10.1.2.0/24 synchronize=no | ||
| + | |||
| + | ==Main/Backup link setup== | ||
| + | |||
| + | ===ISP3=== | ||
Lakukan | Lakukan | ||
| Line 101: | Line 130: | ||
* BGP AS prepend - menaikan AS path | * BGP AS prepend - menaikan AS path | ||
| − | Outgoing filter ke ISP1: | + | # setup routing filter |
| − | + | # | |
| + | /routing bgp peer | ||
| + | set toISP1 in-filter=isp1-in out-filter=isp1-out | ||
| + | set toISP2 in-filter=isp2-in out-filter=isp2-out | ||
| + | # | ||
| + | # Outgoing filter ke ISP1: | ||
| + | # | ||
/routing filter | /routing filter | ||
#accept our networks | #accept our networks | ||
| Line 109: | Line 144: | ||
#discard the rest | #discard the rest | ||
add chain=isp1-out action=discard | add chain=isp1-out action=discard | ||
| − | + | # | |
| − | Outgoing filter ke ISP2: | + | # Outgoing filter ke ISP2: |
| − | + | # | |
/routing filter | /routing filter | ||
#accept our networks and prepend AS path three times | #accept our networks and prepend AS path three times | ||
| − | add chain=isp2-out prefix=10.1.1.0/24 action=accept set-bgp-prepend= | + | add chain=isp2-out prefix=10.1.1.0/24 action=accept set-bgp-prepend=3 |
| − | add chain=isp2-out prefix=10.1.2.0/24 action=accept set-bgp-prepend= | + | add chain=isp2-out prefix=10.1.2.0/24 action=accept set-bgp-prepend=3 |
#discard the rest | #discard the rest | ||
add chain=isp2-out action=discard | add chain=isp2-out action=discard | ||
| − | + | # | |
| − | ISP1 menjadi main | + | # ISP1 menjadi main |
| − | ISP2 menjadi backup | + | # ISP2 menjadi backup |
| − | + | # | |
/routing filter | /routing filter | ||
add chain=isp1-in action=discard | add chain=isp1-in action=discard | ||
add chain=isp2-in action=discard | add chain=isp2-in action=discard | ||
| − | + | # | |
/ip route | /ip route | ||
add gateway=192.168.1.1 check-gateway=ping | add gateway=192.168.1.1 check-gateway=ping | ||
| Line 132: | Line 167: | ||
==Cek== | ==Cek== | ||
| + | /routing filter print | ||
| + | /routing bgp instance print | ||
| + | /routing bgp peer print status | ||
/routing bgp peer print | /routing bgp peer print | ||
/routing bgp advertisements print | /routing bgp advertisements print | ||
Latest revision as of 11:22, 3 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 ether0 -> ISP3 ether0 ISP1 ether1 -> ISP2 ether1 ISP2 ether0 -> ISP3 ether1 ISP1 ether2 10.100.100.1/24 ISP1 ether3 10.100.200.1/24 ISP2 ether2 10.10.10.1/24 ISP2 ether3 10.10.20.1/24 ISP3 ether2 10.1.1.1/24 ISP3 ether3 10.1.2.1/24
Setup connection
ISP1
/ip address add interface=ether1 address=192.168.1.1/24 /ip address add interface=ether2 address=192.168.3.1/24 /ip address add interface=ether3 address=10.100.100.1/24 /ip address add interface=ether3 address=10.100.200.1/24
ISP2
/ip address add interface=ether1 address=192.168.2.1/24 /ip address add interface=ether2 address=192.168.3.2/24 /ip address add interface=ether3 address=10.10.10.1/24 /ip address add interface=ether4 address=10.10.20.1/24
ISP3
/ip address add interface=ether1 address=192.168.1.2/24 /ip address add interface=ether2 address=192.168.2.2/24 /ip address add interface=ether3 address=10.1.1.1/24 /ip address add interface=ether4 address=10.1.2.1/24
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:
#set our AS number /routing bgp instance set default as=10 #add BGP peers /routing bgp peer add name=toISP2 remote-address=192.168.3.2 remote-as=20 add name=toISP3 remote-address=192.168.1.2 remote-as=30 # jika ingin redistribute default route ke client yang spesifik # add name=toISP2 remote-address=192.168.3.2 remote-as=20 default-originate=if-installed # add name=toISP3 remote-address=192.168.1.2 remote-as=30 default-originate=if-installed # # advertize routing # /routing bgp network add network=10.100.100.0/24 synchronize=no add network=10.100.200.0/24 synchronize=no
ISP2:
#set our AS number /routing bgp instance set default as=20 #add BGP peers /routing bgp peer add name=toISP1 remote-address=192.168.3.1 remote-as=10 add name=toISP3 remote-address=192.168.2.2 remote-as=30 # # advertize routing # /routing bgp network add network=10.10.10.0/24 synchronize=no add network=10.10.20.0/24 synchronize=no
ISP3:
#set our AS number /routing bgp instance set default as=30 #add BGP peers /routing bgp peer add name=toISP1 remote-address=192.168.1.1 remote-as=10 add name=toISP2 remote-address=192.168.2.1 remote-as=20 # # advertize routing # /routing bgp network add network=10.1.1.0/24 synchronize=no add network=10.1.2.0/24 synchronize=no
Main/Backup link setup
ISP3
Lakukan
- accept network kita sendiri
- drop semua tabel IP lainnya, karena kita tidak mau menjadi transit provider
- BGP AS prepend - menaikan AS path
# setup routing filter # /routing bgp peer set toISP1 in-filter=isp1-in out-filter=isp1-out set toISP2 in-filter=isp2-in out-filter=isp2-out # # Outgoing filter ke ISP1: # /routing filter #accept our networks add chain=isp1-out prefix=10.1.1.0/24 action=accept add chain=isp1-out prefix=10.1.2.0/24 action=accept #discard the rest add chain=isp1-out action=discard # # Outgoing filter ke ISP2: # /routing filter #accept our networks and prepend AS path three times add chain=isp2-out prefix=10.1.1.0/24 action=accept set-bgp-prepend=3 add chain=isp2-out prefix=10.1.2.0/24 action=accept set-bgp-prepend=3 #discard the rest add chain=isp2-out action=discard # # ISP1 menjadi main # ISP2 menjadi backup # /routing filter add chain=isp1-in action=discard add chain=isp2-in action=discard # /ip route add gateway=192.168.1.1 check-gateway=ping add gateway=192.168.2.1 distance=30 check-gateway=ping
Cek
/routing filter print /routing bgp instance print /routing bgp peer print status /routing bgp peer print /routing bgp advertisements print /ip route print
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