iBGP: RouterOS 3.10 to Cisco

RouterOS General
1

I’m using RouterOS 3.10 x86 version in the following scenario:

  • RouterOS with BGP session connected to provider “A”, receiving a partial routing table from this provider.
  • Cisco with BGP session connected to provider “B”, receiving a partial routing table from this provider.
  • Between this two routers, Cisco and RouterOS, there is a iBGP session established to exchange information of the two routers.

The Cisco router sends the routing table received from the provider “B” and also the routes published in its BGP session for the RouterOS through iBGP session, but the RouterOS does not send the routing table received from the provider “A” for the Cisco, sends only those routes published in its session BGP.

I don’t have any In/Out filter in BGP and iBGP sessions.

How to solve this problem? I need to get to the RouterOS external routes through the Cisco iBGP sessions. In a scenario Cisco ↔ Cisco this happens normally.

2

did you tell that bgp instance to distribute other bgp routes ?

3

Yes, this option is selected. Here’s my setup:

# jun/10/2008 18:28:33 by RouterOS 3.10

software id = T4E1-F8T

/routing bgp instance
set default as=28XXX client-to-client-reflection=no comment=“” disabled=no ignore-as-path-len=no name=default out-filter=“”
redistribute-connected=no redistribute-ospf=no redistribute-other-bgp=yes redistribute-rip=no redistribute-static=no router-id=
2XX.XX.1.252

/routing bgp network
add disabled=no instance=default network=2XX.XX.0.0/20 synchronize=no
add disabled=no instance=default network=2XX.XX.0.0/22 synchronize=no
:
:
add disabled=no instance=default network=2XX.XX.15.0/24 synchronize=no

/routing bgp peer
add address-families=ip comment=“” disabled=no hold-time=3m in-filter=“” instance=default multihop=yes name=81XX
nexthop-choice=default out-filter=“” remote-address=200.180.XX.252 remote-as=81XX route-reflect=no tcp-md5-key=“” ttl=255
update-source=loopback0
add address-families=ip comment=“” disabled=no hold-time=3m in-filter=“” instance=default multihop=no name=router nexthop-choice=force-self
out-filter=“” remote-address=2XX.XX.1.255 remote-as=28XXX route-reflect=no tcp-md5-key=“” ttl=255 update-source=loopback0