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.
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