Lab.4 How To Configure External BGP Peering Mikrotik (Loopback Interface)

Just like before we're going to configure External BGP Peering with Loopback interface,The difference is just to make 2 loopback on every router.and this Lab is to learn configuration proccess of eBGP Peering in 2 different AS  to use 2 loopback Address

We're just need this topology Again : 

Below are the configuration for MikroR-1 :

[admin@MikroTik] >  system identity set name=R-1
[admin@R-1] > ip address add address=10.10.10.1/24 interface=ether1
[admin@R-1] > ip address add address=192.168.1.1/24 interface=ether2
[admin@R-1] > interface bridge add name=Loopback1
[admin@R-1] > interface bridge add name=Loopback2
[admin@R-1] > ip address add address=1.1.1.1/32 interface=Loopback1
[admin@R-1] > ip address add address=11.11.11.11/32 interface=Loopback2
[admin@R-1] > ip route add dst-address=2.2.2.2/32 gateway=10.10.10.2
[admin@R-1] > routing bgp peer add name=peer1 remote-address=2.2.2.2 remote-as=200 multihop=yes update-source=Loopback1
[admin@R-1] > routing bgp instance set default as=100 router-id=1.1.1.1
[admin@R-1] > routing bgp network add network=11.11.11.11/32

And Below are for R-2 Configuration: 

[admin@MikroTik] > system identity set name=R-2
[admin@R-2] > ip address add address=10.10.10.2/24 interface=ether1
[admin@R-2] > ip address add address=192.168.2.1/24 interface=ether2
[admin@R-2] > interface bridge add name=Loopback1
[admin@R-2] > interface bridge add name=Loopback2
[admin@R-2] > ip address add address=2.2.2.2/32 interface=Loopback1
[admin@R-2] > ip address add address=22.22.22.22/32 interface=Loopback2
[admin@R-2] > routing bgp instance set default as=200 router-id=2.2.2.2
[admin@R-2] > routing bgp peer add name=peer1 remote-address=10.10.10.1 remote-as=100 update-source=Loopback1
multihop=yes
[admin@R-2] > routing bgp network add network=22.22.22.22/32
 

after we finish configuring eBGP we can verified with this command and i use it on R-2 :

[admin@R-2] > routing bgp peer print status
Flags: X - disabled, E - established
 0 E name="peer1" instance=default remote-address=10.10.10.1 remote-as=100 tcp-md5-key=""
     nexthop-choice=default multihop=yes route-reflect=no hold-time=3m ttl=255 in-filter="" out-filter=""
     address-families=ip update-source=Loopback1 default-originate=never remove-private-as=no
     as-override=no passive=no use-bfd=no remote-id=1.1.1.1 local-address=2.2.2.2 uptime=15s prefix-count=1
     updates-sent=1 updates-received=1 withdrawn-sent=0 withdrawn-received=0 remote-hold-time=3m
     used-hold-time=3m used-keepalive-time=1m refresh-capability=yes as4-capability=yes state=established

[admin@R-2] > ip route print detail where dst-address=11.11.11.11/32
Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme,
B - blackhole, U - unreachable, P - prohibit
 0 ADb  dst-address=11.11.11.11/32 gateway=10.10.10.1 gateway-status=10.10.10.1 reachable via  ether1
        distance=20 scope=40 target-scope=30 bgp-as-path="100" bgp-origin=igp received-from=peer1

[admin@R-2] > ip route print
Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme,
B - blackhole, U - unreachable, P - prohibit
 #      DST-ADDRESS        PREF-SRC        GATEWAY            DISTANCE
 0 ADC  2.2.2.2/32         2.2.2.2         Loopback1                 0
 1 ADC  10.10.10.0/24      10.10.10.2      ether1                    0
 2 ADb  11.11.11.11/32                     10.10.10.1               20
 3 ADC  22.22.22.22/32     22.22.22.22     Loopback2                 0
 4 ADC  192.168.2.0/24     192.168.2.1     ether2                    0