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Ratonsuerte
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OSPF error

Fri Dec 10, 2021 6:36 pm

I have a whole network connected by OSPF, except for this one router that keeps giving me this error when sending the hello packet to his neighbor.

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I have no firewall rule in any of the routers.

Why is this happening?
 
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smyers119
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Re: OSPF error

Sun Dec 12, 2021 7:36 pm

I don't see any error's in the log's you posted. How about posting the sanitized configs for the routers your trying to get connected as neighbors.
 
Kindis
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Re: OSPF error

Mon Dec 13, 2021 7:04 pm

Are you stuck at ExStart on the state? I had this issue and did a rollback to get it working again. Created supout and reported it today.
I think OSPF still needs some love to get to a good state.
 
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smyers119
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Re: OSPF error

Mon Dec 13, 2021 9:16 pm

Are you stuck at ExStart on the state? I had this issue and did a rollback to get it working again. Created supout and reported it today.
I think OSPF still needs some love to get to a good state.
I have a rb4011 with ospf and ospfv3 running with no hickups.
 
Kindis
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Re: OSPF error

Tue Dec 14, 2021 1:06 am

Me to but I get this on some GRE and L2TP interfaces. Not on all just some. Cannot find anything different with config so I suspect a bug somewhere.
I'm the LAN it works like a charm.
 
Kindis
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Re: OSPF error

Tue Dec 14, 2021 3:35 pm

I got back info from MT.
It was a MTU issue. Now I use default which results in 1422 on both sides but OSPF claimed to get MTU of 1432 so something is strange.
I still claim that something is wrong but in this case more related to MTU of GRE and L2TP tunnels.
Regardless setting MTU to 1400 solved the issue for me and OSPF now works great!

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