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Ospf 3.10 BUG: Database Description packet has different mas

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rucevzhuru
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Ospf 3.10 BUG: Database Description packet has different mas

Sat May 02, 2009 11:41 pm

We have one ptp wireless link with two ROS 3.10 on both end. First(ospf id 10.11.0.51) is closer to the network center. Second (ospf id 10.11.0.69) is more distant from center. There are only these two routers on that link. Sometimes the route to second router disappears from all routers in the area. Only solution is to restart ospf on the second router. This is a log from the first router
Code: Select all
20:08:16 route,ospf,info OSPF neighbor 10.11.0.69: state change from Exchange to
 2-Way 
20:08:57 route,ospf,info OSPF neighbor 10.11.0.69: state change from Exchange to
 2-Way 
20:09:38 route,ospf,info OSPF neighbor 10.11.0.69: state change from Exchange to
 2-Way 
20:10:19 route,ospf,info OSPF neighbor 10.11.0.69: state change from Exchange to
 2-Way 
20:11:01 route,ospf,info OSPF neighbor 10.11.0.69: state change from Exchange to
 2-Way
And this is a log from second router.
Code: Select all
20:12:26 route,ospf,info Database Description packet has different master status flag 
20:12:26 route,ospf,info     new master flag=false 
20:12:26 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way 
20:13:08 route,ospf,info Database Description packet has different master status flag 
20:13:08 route,ospf,info     new master flag=false 
20:13:08 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way 
20:13:49 route,ospf,info Database Description packet has different master status flag 
20:13:49 route,ospf,info     new master flag=false 
20:13:49 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way 
20:14:30 route,ospf,info Database Description packet has different master status flag 
20:14:30 route,ospf,info     new master flag=false 
20:14:30 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way 
20:15:11 route,ospf,info Database Description packet has different master status flag 
20:15:11 route,ospf,info     new master flag=false 
20:15:11 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way 
20:15:52 route,ospf,info Database Description packet has different master status flag 
20:15:52 route,ospf,info     new master flag=false 
20:15:52 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way 
20:16:33 route,ospf,info Database Description packet has different master status flag 
20:16:33 route,ospf,info     new master flag=false 
20:16:33 route,ospf,info OSPF neighbor 10.11.0.51: state change from Full to 2-Way

Any suggestions?

Thank you.
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Sat May 02, 2009 11:54 pm

upgrade routeros to latest version.
There have been close to a dozen fixes to ospf since 3.10.

http://www.mikrotik.com/download/CHANGELOG_3
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rucevzhuru
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Mon May 25, 2009 4:26 am

I updated routers to 3.24 but there are several links where the same error still occurs.
20:12:26 route,ospf,info Database Description packet has different master status flag
20:12:26 route,ospf,info new master flag=false
I tried totally change 6 links to ospf from rip and i have had problem with 3 of them so it seems strange. I only add network address to the backbone and change ospf router Id. Only solution is to stop ospf on both end of the link and then start it again. This solution doesn't last long.
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manuelritter
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Mon Feb 08, 2010 5:28 pm

Hello,
i have the same error with ROS 3.30 on both Routers.

Any help?

Greetings Manuel Ritter
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netrat
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Mon Feb 08, 2010 5:34 pm

You guys won't get any help until you upgrade to the latest RouterOS release.
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manuelritter
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Mon Feb 08, 2010 6:30 pm

Same error on RouterOS 4.5

[EDIT]
I had this error 2 times after the upgrade of both routers, but now it seems to be gone.
[/EDIT]
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thinair
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Sat Mar 06, 2010 5:42 am

Any updates on this?
I've tried changing from broadcast to NBMA, upgrading to 4.5.. no luck.. :-(
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thinair
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Re: Ospf 3.10 BUG: Database Description packet has different mas

Sat Mar 06, 2010 5:46 am

Only seems to be one particular PTP link as well..
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LP
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Re: Ospf 3.10 BUG: Database Description packet has different

Mon Dec 06, 2010 5:24 am

Was there ever anything found on this? This problem just popped up on a link that's been good for quite some time. both running RouterOS V4.13 (Power Router 732s). Just wondering before I head out there tomorrow to change ports to see if that helps.
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LP
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Re: Ospf 3.10 BUG: Database Description packet has different

Mon Dec 06, 2010 10:54 pm

Actually, this ended up being from loss of comunication between the routers due to one of the routers constantly rebooting due to cold weather. That is why "state changes" only counted on one side.
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dhanie99
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Re: Ospf 3.10 BUG: Database Description packet has different

Sun Mar 25, 2012 5:41 pm

I've the same problem with router rb1100 and rb450g and rb435g with current os 5.14... would mikrotik fix it. 'Cause we need it so much. Would you do me a favor for this
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fabsoft
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Re: Ospf 3.10 BUG: Database Description packet has different

Tue Jul 03, 2012 12:13 pm

The problem, BUG instead, persists on version 5.17, this is very annoying, if someone knows an easy workaround would be nice !
i've a mesh network topology, it consists of over 50 wireless nodes connected together, some link is p2p someone p2mp, ospf network-type is broadcast. actually every day at least one node lose routing to an horizon and in most cases i observed that node was p2p (a simple wireless AP-Station not wds)
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mrz
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Re: Ospf 3.10 BUG: Database Description packet has different

Tue Jul 03, 2012 12:22 pm

Because of the MUlticast problems on wireless,
One of Solutions is to use NBMA
http://wiki.mikrotik.com/wiki/Manual:OS ... A_networks

Another solution use wds or new station bridge mode and multicast helper on ap (works only between mikrotik devices).
More info in the manual
http://wiki.mikrotik.com/wiki/Manual:Mu ... d_Wireless
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Ascii
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Re: Ospf 3.10 BUG: Database Description packet has different

Fri Jul 06, 2012 6:27 pm

WDS solve nothing
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samsung172
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Re: Ospf 3.10 BUG: Database Description packet has different

Sat Jul 07, 2012 12:59 am

This happen almost all the time, if link between 2 roters drop. Its not just wireless. Fiber, copper, wireless, etc etc, if a link drop, and 2 routers is stil up, when link is back online, it seems like ospf dont want to connect agane. Also the same in nbma mode.

This is a really big bug, That mikrotik dont want to beleve, but it still happen to often.

also, se :

http://forum.mikrotik.com/viewtopic.php?f=14&t=34170
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odie
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Re: Ospf 3.10 BUG: Database Description packet has different

Sat Jul 07, 2012 5:06 pm

+1 more
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hapi
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Re: Ospf 3.10 BUG: Database Description packet has different

Sat Jul 07, 2012 9:03 pm

same problem v5.18

BTW next bug in OSPFv3
Code: Select all
20:03:07 route,ospf,error Discarding packet: locally originated 
20:03:07 route,ospf,error     src address=fe80::225:90ff:fe27:a6d
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mhugo
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Re: Ospf 3.10 BUG: Database Description packet has different

Mon Jul 09, 2012 10:22 am

Hi,

I have this problem in 5.18 - One box looses two ospf neighbours at the same time and the other neighbours sees that there is a different master flag.

Since this happens at the same time with two directly connected neighbours its little wierd. Routers are using a unique (checked too) ip on a loopback as router id.

I have changed the router (was powerboard 732 - to RB1100 - to RB1100X2).

I dont see any issues on the ethernet.

Any clues or is this a bug?

/M
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k00k
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Re: Ospf 3.10 BUG: Database Description packet has different

Tue Jul 17, 2012 6:53 pm

++1
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ManyX
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Re: Ospf 3.10 BUG: Database Description packet has different

Wed Dec 19, 2012 11:06 am

+++1
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jrudrow
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Re: Ospf 3.10 BUG: Database Description packet has different

Thu Dec 20, 2012 4:24 pm

Weird fix...
We had a link doing this exact thing. We have a script that will go to a local network server, and fetch a new OS. Trying to pass this data we would disconnect. We changed the link from 40mhz turbo(which would pass 40mbps(tcp) duplex before the change or even when the OSPF wasn't working) to 20mhz. After this change our link came up, and didn't have an issue.

During the change we tried protocol's first, however this was to no avail. However the simple channel width change seemed to fix our issues.

What was really weird is all the Btest's I did, and all the pings would go through our network without issues, and no disconnect. Only when I ran my "fetch" script would it disconnect.

Anyway, any help here I thought might be worth posting.

Edit: We're using 5.7os, and 5.7os, both RB433ah's, both xr-5's.
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samsung172
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Re: Ospf 3.10 BUG: Database Description packet has different

Fri Dec 21, 2012 8:54 am

http://forum.mikrotik.com/viewtopic.php?f=14&t=34170
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