I think I am having a meltdown. I have a frame network with around 50 sites across 2 frame t-1's. All of my outlying sites gets their default route and shows up when I do a sho ip route but one site does not get it at all. I do not have default routes set in the config files at any other remote routers. Any ideas?
I'm thinking (hoping) you added a default gateway and not a gateway of last resort which would in fact pass ALL traffic unknown to the edge out the edge.
Does the outlying site have a core router/switch where every device defaults to? If so does that device know of the Serial Intfc's IP?
Is the edge the default gateway of all devices?
Is the problem edge's Serial intfc the same IP scheme (albeit different subdivision) such as 10.75.250.x/30, as the working edges. If not your core needs to know that route. If it's the same is the route on your core a class c?
For more paste configs of problem edge and working edge here and relevant cores and your aggregate router and its core.
Assuming your WAN is inaccessible from the public there is no need to worry about pasting configs or changing pwds or IPs.