If I understand what you are saying correctly, then I must ask, is this
a bridged/switched network or a routed network.
If it is bridge, you are not going to get OSPF to do what you want as
there is no "shortest" path from a routing point of view.
If it is routed, then it should work. OSPF does things by interface, so
if you have 2 towers being fed from a single interface, it doesn't know
how to determine which interface to use as there is only one.
Please give us some more information about the total topology that you
have. Topology is critical in knowing how to setup the OSPF parameters.
On 2/25/2014 7:38 PM, Paul McCall wrote:
Costs are all set right, both incoming and outgoing. The problem is that the
TIK does not seem to differentiate between the two towers that it could
possibly go to because they are on the same subnet and same OSPF network.
That's the problem, in a nutshell
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Scott Reed
Sent: Tuesday, February 25, 2014 6:21 AM
To: Mikrotik discussions
Subject: Re: [Mikrotik] OSPF "problem" situation #1
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]>
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--
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
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-----
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Checked by AVG - www.avg.com
Version: 2014.0.4335 / Virus Database: 3705/7124 - Release Date: 02/25/14
--
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
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