Hi fellow MT’s
I am having issues peering with a CIsco router over BGP.
The setup is as follows
The Cisco router has multiple VLANs, each VLAN is in it’s own VRF and has the IP address of 10.99.99.1/30
I can’t get my MT to peer multiple times with the same BGP peer address (10.99.99.1) in different VRFs.
I have tried to simulate this in GNS3 using two MT routers and I can’t seem to get around a build-in peer address check, that I think is wrong.
I should be able to peer with the same IP multiple times as long as it is in different VRFs, right?
What am I doing wrong?
R-1 has VLAN 10 and VLAN 20 with IP address 10.99.99.1/30 and
R-2 has VLAN 10 and VLAN 20 with IP address 10.99.99.2/30
Ignore the 1.1.1.0/24 addresses as these are used for the firefox web gui.
R-1 config:
[admin@MikroTik] > export
aug/28/2018 19:02:28 by RouterOS 6.42.5
software id =
/interface bridge
add fast-forward=no name=bridge1
/interface vlan
add interface=bridge1 name=vlan10 vlan-id=10
add interface=bridge1 name=vlan20 vlan-id=20
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/routing bgp instance
add as=1 client-to-client-reflection=no name=bgp1 router-id=1.1.1.1
routing-table=vrf10
add as=1 client-to-client-reflection=no name=bgp2 router-id=1.1.1.2
routing-table=vrf20
/interface bridge port
add bridge=bridge1 interface=ether1
/ip address
add address=1.1.1.1/24 interface=ether10 network=1.1.1.0
add address=10.99.99.1/30 interface=vlan10 network=10.99.99.0
add address=10.99.99.1/30 interface=vlan20 network=10.99.99.0
/ip dhcp-client
DHCP client can not run on slave interface!
add disabled=no interface=ether1
/ip route vrf
add export-route-targets=10:10 import-route-targets=10:10 interfaces=vlan10
route-distinguisher=10:10 routing-mark=vrf10
add export-route-targets=20:20 import-route-targets=20:20 interfaces=vlan20
route-distinguisher=20:20 routing-mark=vrf20
/routing bgp peer
add instance=bgp1 name=peer1 remote-address=10.99.99.2 remote-as=2 ttl=
default
[admin@MikroTik] >
R-2 config:
[admin@MikroTik] > export
aug/28/2018 19:03:57 by RouterOS 6.42.5
software id =
/interface bridge
add fast-forward=no name=bridge1
/interface vlan
add interface=bridge1 name=vlan10 vlan-id=10
add interface=bridge1 name=vlan20 vlan-id=20
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/interface bridge port
add bridge=bridge1 interface=ether1
/ip address
add address=1.1.1.2/24 interface=ether10 network=1.1.1.0
add address=10.99.99.2/30 interface=vlan10 network=10.99.99.0
add address=10.99.99.2/30 interface=vlan20 network=10.99.99.0
/ip dhcp-client
DHCP client can not run on slave interface!
add disabled=no interface=ether1
/ip route vrf
add export-route-targets=10:10 import-route-targets=10:10 interfaces=vlan10
route-distinguisher=10:10 routing-mark=vrf10
add export-route-targets=20:20 import-route-targets=20:20 interfaces=vlan20
route-distinguisher=20:20 routing-mark=vrf20
[admin@MikroTik] >