eBGP as PE-CE routing protocol

RouterOS Forwarding Protocols
1

Hi there,

I’m considering to use eBGP instead of OSPF as my PE-CE routing protocol. To do this properly, I will use OSPF to carry the route to the loopback interfaces of my PE and CE routers, and peer with the loopback interface so I can actually use redundant links to my CE’s.
I saw there was an article on the wiki on exactly this, namely http://wiki.mikrotik.com/wiki/Manual:EBGP_as_PE-CE_routing_protocol, however it does strike me as an ugly hack. I did a little experimenting today, and have a question:

If I create a BGP instance per VRF on the PE with my real ASN, and peer with a private AS on the CE, then select redistribute-other-bgp=yes, it seems to redistribute my routes correctly. Is it correct that redistribute-other-ospf in a BGP instance in another routing-table will only give me routes that actually belong to that routing table, am I risking unwanted route leaking here?

If this is indeed correct, I will write a new wiki article on this, because that wiki article is a bit of a hack :slight_smile:

Also I’ve seen a few attached files on the wiki with the .sim extension, such as this: http://www.mikrotik.com/download/docs/mpls/2-bgp-vpnv4-bgp.html. What are those? Is it some kind of simulation environment, if so how do I get that?

2

Please disregard my original question. With a few minor optimizations the wiki articile is perfectly valid.
I would still like to know about the .sim files though :slight_smile:

3

are those SIM files for internal use? :slight_smile: MT?

4

I’ve received word per email from Maris that it was a simulator that was discontinued a while back… If you look under the logging topics, you’ll see a simulator topic too… I could use a simulator sometimes though…