We are setting up a new office. We have a T1 connected to a Cisco 2811 router then to a Sonicwall Tz170 firewall with enhanced OS. The firewall, connectivity, etc all work fine. The DHCP server is enabled (not passthrough) and a lease range of 10.0.3.100-10.0.3.254 has been added w/ a subnet mask of 255.255.0.0. (we are using a class B for organizational purposes, not for sheer # of nodes).
When the PCs are set to static IPs in this range or any other, they work fine - LAN / internet access, etc all OK. I can even get to the web management console on the FW. But when set to DHCP, they are not able to aquire an IP address.
I've contacted Sonicwall support but have not heard back yet. Help!