Can't see VPN network on internet router

[mfoc]

Disclaimer: I'm a rookie.

We've got two basic routers setup - one for our internet connection, and one that functions as our gateway. We've got a VPN to a remote location that comes in through our internet router.

I can ping the VPN from the internet router, but that's where it ends. I can't see that VPN network (172.17.x.x) on anything BUT that internet router. How do I get it to jump across to our gateway router so that our entire network (172.16.x.x) can see it.

 

[mfoc]

By the way... This USED to work. I don't know what happened to make it not work.

The router has two ethernet ports. One is connected to a PIX Firewall and the other goes straight to our switch.

 

[bierhunter]

It could be a number of things. Routing protocols, static routes, access lists.

A sample config would be helpful in this case.

BierHunter
CNE, MCSE, CCNP