ASN transit

RouterOS Forwarding Protocols
1

Hi

I have pretty clear how to create a system BGP multihommed (http://wiki.mikrotik.com/wiki/Manual:Simple_BGP_Multihoming) and give connection to equipment/users internals. But I have a little doubt. Besides, I have must give Internet service (traffic - transit) to another autonomous system (ASN) and announce their routes, but do not really understand how.

                 CARRIER1                   CARRIER2
                       \                       /
                          \                 /
                             \           /
                                   ME     <-------------> OTHER ASN
                                   |
                                   |
                                 USERS

Has anyone done this in mikrotik? Can anyone tell me some example Internet or clarify the issue? Actually I’m pretty novice in RouterOS without an example, it would not be able to. Thank you.

Best regards

2

Hi, I’ve managed to set up transit of few ASN’s. Keeping long story short:

  • set up peering session with your ISP / out routing filters (in my case I filter only by my and my client prefixes), deny everything else
  • set up peering session with ASN you have to set up transit as above / in filter prefixes, deny everything else

It’s simple as that :wink: