One thing we can see in the output you provided is that the neighbor router ID is tuggling between 251.251.251.251 and 252.252.252.252. This can be because the router is tuggling between two different neighbors or that for some reasons the RID on the neighbor is changing. You should try to confirm which one of these two possibilities it is.
I would recommend the following actions;
1- Absolutely make sure that the tunnel end points (ie. tunnel source and destination) are not advertised in OSPF as this would definitely create instability as well.
2- Configure the RID statically on all routers using the router-id command under the ospf process as follow:
router ospf 1
Hope this helps,
Harold Ritter Sr. Technical Leader CCIE 4168 (R&S, SP) email@example.com México móvil: +52 1 55 8312 4915 Cisco México Paseo de la Reforma 222 Piso 19 Cuauhtémoc, Juárez Ciudad de México, 06600 México
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.