Hey Justin, Do you maybe have any mangle rules involved with it?
Can you supply us with some outputs maybe? Cheers On Fri, Mar 31, 2017 at 7:00 PM, <[email protected]> wrote: > Send Mikrotik mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.butchevans.com/mailman/listinfo/mikrotik > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Mikrotik digest..." > > > Today's Topics: > > 1. Strange OSPF problem (Justin Marshall) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 31 Mar 2017 16:56:03 +0000 > From: Justin Marshall <[email protected]> > Subject: [Mikrotik] Strange OSPF problem > To: Mikrotik discussions <[email protected]> > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Hi, > > I have an odd situation with OSPF. > > There are 2 towers (Tower A and Tower B) and a NOC involved that feeds > both towers. > Tower A is directly connected to the NOC via Mikrotik Backhaul. Tower B > is directly connected to the NOC via Fiber. > Tower B is connected to Tower A via Fiber. > > When tower A is running straight off the NOC (via Mikrotik Backhaul) > everything works as it should. > > We are trying to make a switchover to have Tower A run off Tower B so it > will be a Fiber connection all the way to Tower A (through tower B) and > eliminate the Mikrotik Backhaul. > > When I change cost on the OSPF interfaces to make this happen, all > customers work as they should and following the normal path to/from the > Internet as expected. However, for one of the customers on Tower A, > traceroutes to that one customer stop at Tower A (through tower B) from the > NOC. Traceroutes towards the NOC, from the customer stops at Tower B. > > All customers are on the same subnet. > > I can directly ping the customer in question from both Tower B and Tower A > (and the traffic is taking the correct path), but not from the NOC. From > the NOC all traffic stops at Tower B > > The only real difference for the customer that is not working is they are > using a Sonic Wall, and the other customers have Mikrotik routers behind > the CPE's. We have tried elimating the sonc wall, and replacing it with a > laptop for testing, and the traffic flow failed in the same way. > > Tried all kinds of things and we are quite stumped. > > Anyone have any suggestions? > > Thanks, > Justin > [email protected]<mailto:[email protected]> > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <http://mail.butchevans.com/pipermail/mikrotik/ > attachments/20170331/4906361e/attachment.html> > > > ------------------------------ > > _______________________________________________ > Mikrotik mailing list > [email protected] > http://mail.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for Mikrotik tutorials. > > End of Mikrotik Digest, Vol 110, Issue 4 > **************************************** > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.butchevans.com/pipermail/mikrotik/attachments/20170403/582c5919/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
