I had this problem that was resolved on this forum as detailed below: I left VPN icons on users desktops because previously they were connecting from B to A using VPN via the DSL routers and synchronizing there work. Yesterday one user deleted the icon they were using to connect to A and started connecting using the old method. Since then all users cannot connect to A. Tracert goes via the DSL router, 192.168.5.252 and into several other Sprint routers before getting lost.
How do I reset my routers, or was there something I omitted in my setup?
I can telnet into B and ping A, 192.168.155.1, ping 192,168.0.4 and also ping devices on the A LAN
I can ping devices on B LAN also from telnet. The devices on B LAN cannot even ping 192.168.155.2, the Serial0 on B router
Definately is a routing problem...
What you need to do is:
Change the default gateway on all PC's at site A to 192.168.0.4 and the default gateway of PC's at site B should be 192.168.5.4
Then, on router A you need to add a default route pointing to the DSL router. All unkown destinations will be routed to DSL router.
ip route 0.0.0.0 0.0.0.0 192.168.0.198
If users at site B should use the DSL link for internet access, you will need a default route at router B pointing to serial interface of router A
ip route 0.0.0.0 0.0.0.0 192.168.155.1
If you would want to use a routing protocol on a 1720 router, rather use EIGRP. Not as chatty as rip and converge a whole lot faster.
On both routers you should have:
router eigrp <AS number> <---- AS number can be anything, as long as they match on routers
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