I have 3 locations and 3 subnets, 10.0.x.x, 10.1.x.x, 10.2.x.x. Each location has its own subnet.
I had a Cisco 1800 router in place for a point-to-point MPLS network setup to connect all 3 locations together.
I recently removed the MPLS network and replaced it with a site-to-site VPN network.
The gateway for the MPLS on the 10.1.x.x network was 10.1.0.1. I’ve removed that device and added the VPN gateway. The new gateway is also assigned the 10.1.0.1 address. After establishing the VPN tunnel, all servers and PC’s are able to communicate with the 10.0.x.x network except for 10.0.0.3 (DC) and 10.0.0.5 (Time clock server). As well, a ping from 10.0.0.3 to 10.1.0.1 is unreachable (see attached screen shot)
All PC’s and devices on 10.2.x.x can communicate perfectly with 10.0.x.x. The VPN tunnels are configured identically so I don’t believe the problem lies with the VPN configuration.
After removing the Cisco 1800 gateways and activating the VPN gateway 2 servers will not communicate with the 10.1.0.0 subnet. All PC’s in the 10.1.0.0 subnet can see and ping any other PC in the 10.0.0.0 subnet except for my 10.0.0.3 and 10.0.0.5.
It seems the problems lie within the servers themselves. I am not the original network administrator so these servers were initially configured by someone else.
I’ve disable windows firewall on both 10.0.0.3 and 10.0.0.5.
Does anyone have any suggestions as to why the servers can no longer communicate with the 10.1.x.x network after replacing the gateway?