I inherited a network that has 4 servers (exchange, f/p, ISA/proxy, and terminal). The IP Address scope is 10.x.x.x with a subnet of 255.0.0.0. The customer is wanting to add wireless capability for the laptop users in the office. They've purchased a Linksys WRT54GR to do this. Like all Linksys wireless routers, this device comes with the IP Address 192.168.1.1. This office has a T1 line, which runs into a switch, which then runs into two other switches and the servers. All desktops in the office are then connected to one of the aforementioned switches. I have connected a Cat5 cable from one of the switches to the Internet port on the Linksys, and then from the Linksys to my laptop. ipconfig /all on my laptop shows an IP Address of 192.168.1.100, subnet mask 255.255.255.0, and def. gateway 192.168.1.1. I am unable, however, to get on the internet with this setup. When I plug my laptop straight into the switch, I can get on the internet fine.
The Linksys config page doesn't allow me to change the subnet mask to 255.0.0.0 to match the LAN's subnet mask. I can change the IP address of the Linksys, but I don't think that is much help to me, if I can't change the subnet mask.
How can I get this router to work in this office? Should I just try using a WAP instead of the router? Thanks!