Agreed. We had one doing something similar. Turned out to be a cat5 not terminated well.
Terri Kelley Network Engineer 254.697.6710 Farm to Market Broadband -----Original Message----- From: Scott Reed <[email protected]> To: Mikrotik discussions <[email protected]> Sent: Tue, 25 Feb 2014 5:43 AM Subject: Re: [Mikrotik] OSPF "problem" situation #1 My opinion, if you can, seldom static route, use OSPF. Network changes are seamless with properly configured OSPF. Add device, everything works. Add a tower, everything works. Not additional work. In the case of the OP, I would guess that doing static routing would just hide a problem that is going to impact things other than OSPF at some point. If the routes are changing on a regular basis, best to fix the link(s), not avoid OSPF. On 2/25/2014 6:35 AM, Paolo Di Francesco wrote: > I would add : > > 1) as said, the interfaces should be in ptpm or p2p, broadcast will > make things "strange" (some bugs in ubnt, not sure they solved) > > 2) if you can, avoid ospf and use static routing. If they are leaves > of the net, just use static routing + tunnel and you will solve > everything > > 3) is ospf flapping? take a look to the routes of the 3 routers, you > should see that every N minutes the routes are changing. If so, better > to avoid OSPF for this link > > In case contact me off list > >> Not sure what you have setup, but a couple of things come to mind. >> A router ID on any router of 0.0.0.0 will cause funny things to happen >> occasionally. Make sure all routers have an unique ID. >> Routes with equal costs will sometimes change. Make sure you have the >> costs setup correctly on the routers. Make sure the cost is the same >> for both directions on a link unless you really do want traffic to use a >> different path inbound than outbound. >> More specific routes have priority over more general routes. Not >> everything takes the default route, if there are other ways to get >> somewhere. >> There have been some issues with some levels of UBNT firmware. If you >> are a WISPA member, check the archives on the mail lists. (If you aren't >> a WISPA member, get signed up as soon as you can.) >> If you want help offlist, feel free to e-mail me directly. >> >> On 2/24/2014 2:34 PM, Paul McCall wrote: >>> Tower A has a Rocket M5 feeding Tower B (as its primary OSPF path) and >>> Tower C (as its secondary OSPF Path and that works correctly) >>> >>> Seemingly since A (xxx.xxx.214.49), B (xxx.xxx.214.50) and C >>> (xxx.xxx.214.51) are on the same subnet and the same OSPF network, >>> sometimes Tower B will go through Tower C before going to Tower A. >>> >>> Even with a static route from B (214.50) to A (214.49), the OSPF >>> default route wants to prefer the tower C (214.51) path. In the IP, >>> Route List it shows that the default should go the right direction >>> with a "distance" of 1. In the OSPF, Routes it shows Tower C (214.51) >>> as the default path with a cost of 1 and a state of Ext 2. >>> >>> Any thoughts ? >>> >>> >>> >>> >>> Paul McCall, Pres. >>> PDMNet / Florida Broadband >>> 658 Old Dixie Highway >>> Vero Beach, FL 32962 >>> 772-564-6800 office >>> 772-473-0352 cell >>> www.pdmnet.com<http://www.pdmnet.com/> >>> [email protected]<mailto:[email protected]> >>> >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL: >>> <http://mail.butchevans.com/pipermail/mikrotik/attachments/20140224/67e85431/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 >>> >>> >>> ----- >>> No virus found in this message. >>> Checked by AVG - www.avg.com >>> Version: 2014.0.4335 / Virus Database: 3705/7120 - Release Date: >>> 02/24/14 >>> >>> >> > > -- Scott Reed Owner NewWays Networking, LLC Wireless Networking Network Design, Installation and Administration Mikrotik Advanced Certified www.nwwnet.net (765) 855-1060 (765) 439-4253 Toll-free (855) 231-6239 _______________________________________________ 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/20140225/db119bd9/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
