I made an IP conflict recently after goofing my documentation on a /28 and overlapping part of it with a /30 on the same router. It caused the same sort of problem you were having.
On Wed, Oct 12, 2022 at 8:47 AM Nate Burke <n...@blastcomm.com> wrote: > I changed the /30 that the OSPF network was using over the F425 and that > seems to have fixed it. The original /30 does not exist anywhere else > on the network that I can find, either as a route, defined IP, or a > Router ID. I didn't think of changing that since it seemed to be a > weather event that triggered it in the first place, and it had been > working fine for months. > > On 10/12/2022 7:11 AM, Dennis Burgess wrote: > > I would have to take a look, but sounds like duplicate routerID or BFD. > OSPF is pretty straight forward on this. > > > > > > > > Dennis Burgess, Mikrotik Certified Trainer > > MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE, MTCSE, HE IPv6 Sage, Cambium ePMP > Certified > > Author of "Learn RouterOS- Second Edition" > > Link Technologies, Inc -- Mikrotik & WISP Support Services > > Office: 314-735-0270 Website: http://www.linktechs.net > > Need to Automate MikroTik Backups: https://cloud.linktechs.net > > Create Wireless Coverage's with www.towercoverage.com > > > > -----Original Message----- > > From: AF <af-boun...@af.afmug.com> On Behalf Of Nate Burke > > Sent: Tuesday, October 11, 2022 5:18 PM > > To: AnimalFarm Microwave Users Group <af@af.afmug.com> > > Subject: Re: [AFMUG] OSPF Pulling my hair out > > > > I changed the RB4011 to a RB2009, and tried downgrading the RB4011 to > > ROS6.49.6 from ROS7.5 and it's doing the exact same thing. I've tried > setting up an EoIP Tunnel across the F425, and changed the Router ID in > OSPF. Still doing the exact same thing. As soon as I enable the F425 > link, the Entire route table will flap between the Powerbridge and the > > F425 even though the powerbridge is a cost of 20 higher than the F425. > > If I disable the F425, everything is stable over the Powerbridge. Not > sure what else to try. > > > > On 10/6/2022 4:22 PM, Robert Haas wrote: > >> Make sure you haven't duplicated your router id. > >> > >> > >> > >> -----Original Message----- > >> From: AF <af-boun...@af.afmug.com> On Behalf Of Nate Burke > >> Sent: Tuesday, October 4, 2022 1:58 PM > >> To: AnimalFarm Microwave Users Group <af@af.afmug.com> > >> Subject: [AFMUG] OSPF Pulling my hair out > >> > >> I have a site with a RB4011 connected via an old M5 Powerbridge, and an > EPMP PTP425. The 4011 is running ROSv7, everything else is on ROSv6. > Connecting to a CCR1036 and CCR1009 on the other ends of the radios. > >> > >> Everything was working perfectly for several months until a storm came > >> through, and now the F425 OSPF Session will not stay stable. The OSPF > >> Weights are set to prefer the F425 link. The OSPF neighbor never goes > >> down, Adjacency/state never change, but the RB4011 will update it's > >> entire routing table about every 5 seconds and flap back and forth > >> between the Powerbridge and the F425. The remote routers never update > >> the route to the 4011, it is stable over the F425. If I disable the > >> F425 neighbor, everything is stable over the powerbridge. If I disable > the Powerbridge neighbor, the router will lose connectivity for a second > every 10 or 15 seconds, like it loses it's routing table. > >> > >> There is no packet loss across the F425 link, and it will Tik to Tik bw > test at 100MB sync no problem and no packet loss. I've even tried changing > ports on the 4011, plugging the F425 into a completely separate OSPF router > on the remote end. I've also put the traffic through a VLAN on the F425 to > see if the F425 was doing something weird with the packets. The F425 > radios on both ends have been power cycled. I've also updated ROS to the > latest 7beta, and no change. > >> > >> I'd think this is an issue with ROSv7/6 since the routing table keeps > updating, but the powerbridge link is always fine, so it feels like > something with the F425. Especially since it happened after a storm. > >> But at the same time, how could a failure of the F425 be affecting > OSPF? When I do OSPF Logging on the 4011, nothing is looking out of the > ordinary. I guess I could try physically changing the 4011, but I've never > had a failure like that before. > >> > >> Mainly I just want to vent that I'm probably missing something stupid, > I just haven't been able to figure out what it is yet. > >> > >> > > > > -- > > AF mailing list > > AF@af.afmug.com > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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