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midsizewisp
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v7.1.1 OspfNeighbor received wrong LS Ack

Tue Feb 08, 2022 4:55 pm

I'm getting "OspfNeighbor { router-id: X.X.X.X state: Full } received wrong LS Ack" in my v7.1.1 routers from my v6.48.6 routers.
It seems like restarting the OSPF instance on the v6 routers fixes it for a while.

Any idea what is causing this?
 
mhugo
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Tue Feb 15, 2022 4:49 pm

We even got this between a 7.1.1 and 7.1 today. Only visible in the 7.1 router.
 
mlab
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Tue Feb 15, 2022 6:50 pm

Yeah, same issue here ... we have a mikrotik only OSPF with about 40 switches and the logs get spammed a lot. All running 7.1.1

There is 7.1.2 now, but there is no mention of solving this issue ....
 
stavros54cy
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Mon Feb 21, 2022 2:40 pm

Hello there

I have set up a GNS3 lab with only 7.1.2 cloud hosted routers and I am facing the same issue

Did you manage to resolve this?
 
sette
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Tue Mar 22, 2022 10:43 am

Hello,
any news regarding this problem?
I've tried 7.1.3 and it's still present. Is somehow related to BFD?

thank you
 
stavros54cy
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Tue Mar 22, 2022 10:58 am

Hello In my case in the VM lab I had to upgrade and restart the VM host.

After that I have not experienced the same
 
Flyerman
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Mon May 02, 2022 8:35 am

We have same problem. Very simple OSPF setup, 3x v6 routers, 1x v7 (now 7.3beta37)

On the v7 route OSPF fails with the same error "ignoring LS Ack - wrong neighbor state" , sometimes after few seconds, sometimes 5-10 minutes..

BFD on v6 is enabled.
 
aoxiangtianji
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Sat Jun 04, 2022 6:13 am

Same problem here...
 
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UplinkLLC
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Sat Jun 04, 2022 11:32 pm

Hello,

We had the same problem where V7 routers were getting hammered by LS ACK messages.

What fixed it for us was to upgrade adjacent V6 routers to V7. We have 40 routers in our network and have now upgraded half of them running V7.2.3. So far everything is working well.

We also turn off BFD on V6 routers OSPF interface that connect to V7 routers. Be aware that if you are using OSPF and NAT on the same V7 router you need to disable connection tracking for OSPF.

Not suggesting that you do any of that, but that is what works for us.

Regards,
 
bozallen
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Wed Jul 06, 2022 3:24 am

This still appears to be an issue in routeros 7.3.1. I'm trying to form an OSPF adjacency from a CCR2116-12G-4S+ running 7.3.1 to a CCR1036-8G-2S+ running 6.47.10 or 6.45.9. The adjacency gets stuck in the 'Exchange' state and the ROS7 box constantly reports "received wrong LS Ack for..." Any news on when this will be resolved?
 
wtechlink
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Thu Jul 21, 2022 11:00 pm

I'm seeing the same error every time a client disconnects from the PPPOE server on the router. Only happens on RouterOS7. Currently using 7.2.3. Most of my OSPF network is still running ROS6, only seeing the error on the router with ROS7

I will try updating to 7.4 later tonight and see if that resolves the issue or not.
 
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gilljr
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Wed Aug 17, 2022 1:18 am

I am running v7.4.1 and I am seeing this on a link to a router running v6.47.9. I added a second link between the routers and I am getting the same error on the secondary link.
 
marcbou
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Sun Aug 28, 2022 1:31 pm

Hey Mikrotik could we please get an answer on this?
 
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nichky
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Mon Aug 29, 2022 8:19 am

on my case moving to v7.4.1 fixed the issue
 
ultimus247
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Fri Sep 02, 2022 11:29 pm

Im preparing to upgrade my companies network from 6.49.6 to 7.5 but we cannot do this without showing the transition will be smooth.
In our test lab Im upgrading a single router to 7.5 and connecting over a GRE tunnel. When I do this our OSPF doesnt work like it does from 6.x to 6.x.
We initially get the routes: state Change to Full
We see all routes for a split second and then we then receive these errors on the 7.5 router: received wrong LS Ack for inter-area-prefix 10.10.0.0 10.10.9.14 0x80000006 expected 0x80000007.
This then brings DOWN the gre tunnel entirely, which is very interesting as without OSPF the tunnel is stable.
After this the gre tunnel comes back online and we start the loop again.
 
hjoelr
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Fri Dec 16, 2022 10:57 pm

We see all routes for a split second and then we then receive these errors on the 7.5 router: received wrong LS Ack for inter-area-prefix 10.10.0.0 10.10.9.14 0x80000006 expected 0x80000007.
This then brings DOWN the gre tunnel entirely, which is very interesting as without OSPF the tunnel is stable.
After this the gre tunnel comes back online and we start the loop again.

You probably already got this figured out, but it sounds like OSPF is installing a route for your external IPs to go across the tunnel. The moment the routes get installed, your routers start sending your tunnel management traffic across the tunnel. You need to filter out the external IPs of the tunnel from OSPF using a Route Filters. You can see my related post about this over here: viewtopic.php?p=961905
 
sep
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Re: v7.1.1 OspfNeighbor received wrong LS Ack

Thu Jan 19, 2023 1:20 pm

did anyone figure out the proper fix for this ? i see it on CCR2216 running 7.7 with 3 CCR's in a triangle.

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