The best solution would be to have multiple ways to get to both edge routers from your network. Have each router pull in a full BGP feed. Setup iBGP on routers between the two edges. This way, traffic with a better path through A goes A and likewise traffic better through B goes B (better meaning more specific subnets and shorter AS length). Use defaults to get traffic from your network to all BGP speaking boxes, depending on you traffic load needs.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com ----- Original Message ----- From: "Ty Featherling" <[email protected]> To: "Mikrotik discussions" <[email protected]> Sent: Monday, August 31, 2015 2:08:58 PM Subject: Re: [Mikrotik] Multihomed - BGP + OSPF Yes. The new circuit connects to a mikrotik router that is one fiber hop from my core. For now all traffic that is headed out the new circuit will pass through that core. I can diagram it all if it helps. -Ty On Mon, Aug 31, 2015 at 1:58 PM, Mike Hammett <[email protected]> wrote: > Are the two circuits at different points in your network? > > > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > Midwest Internet Exchange > http://www.midwest-ix.com > > > ----- Original Message ----- > > From: "Ty Featherling" <[email protected]> > To: "Mikrotik discussions" <[email protected]> > Sent: Monday, August 31, 2015 1:54:27 PM > Subject: [Mikrotik] Multihomed - BGP + OSPF > > I use OSPF to hand internal routing and BGP to talk to my provider. I just > turned up a second circuit on the network so naturally I would like to be > able to route some subnets through one connection and others through the > other with either failing over should one connection go down. I get that I > can advertise each subnet as small as /24 out of either or both connections > but weighted differently so that one path is preferred while available. The > question I have is how do I pass down which path should be taken on the > outgoing side via OSPF? I'm sure it has to do with sharing default routes > but could someone help me understand what needs done? > > -Ty > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://mail.butchevans.com/pipermail/mikrotik/attachments/20150831/51d77b39/attachment.html > > > > _______________________________________________ > Mikrotik mailing list > [email protected] > http://mail.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://mail.butchevans.com/pipermail/mikrotik/attachments/20150831/bcda1af0/attachment.html > > > > _______________________________________________ > Mikrotik mailing list > [email protected] > http://mail.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.butchevans.com/pipermail/mikrotik/attachments/20150831/e529c071/attachment.html> _______________________________________________ Mikrotik mailing list [email protected] http://mail.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.butchevans.com/pipermail/mikrotik/attachments/20150831/3a4f1233/attachment.html> _______________________________________________ Mikrotik mailing list [email protected] http://mail.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
