I have currently established a point to point network between three branches using Cisco routers using a T1 Circuit for connectivity to each other. Branch A contains a Cisco 2821 with dual serial interface WIC. Each one goes to the other branches. One to Branch B and the other to Branch C. Branch A will also provide the internet connection for those branches through the T1 Circuit. This is to eliminate the current ISP Branch B and C use to cut off those bills.
I can ping each location on the LAN and Router level. Only the LAN computers at Branch A can ping the LAN port on the SonicWall (x.x.0.2). The other LAN computers at the other branches cannot but their routers can hit the LAN on the SonicWall.
Also, according to the ISP set up with the old Netgear VPN router the WAN Settings are as follows:
SonicWall WAN IP (NAT Public) Address: x.x.50.118
WAN Subnet Mask xxx.xxx.255.252
WAN Gateway (Router) Address: x.x.50.117
I know the SonicWall has an internet connection. I am able to ping and trace route to www.yahoo.com
through the diagnostics panel.
Everything on Branch A LAN including Cisco router can ping the LAN and WAN IPs on the SonicWall.
I have been working on this entire setup for weeks now. Each time I think I will have a successful launch I hit another wall. It is nerve racking. (I DON'T SLEEP BECAUSE OF IT)
I have ran out of options with my resources. I am in desperate need of help to understand what I am doing wrong or missing from the configuration. PLEASE HELP...I'M FREAKING!