I am trying to setup a network using a Cisco 1721 router and 1924 Switch with two VLANs. I have the 1721 default gateway set to my networks default gateway, and the switch is pointing to the interface of the router on the same VLAN. The problem is that whenever I try to access any internet resources from the router it won't connect. Even trying to send a ping to http://www.google.com won't work.
If from within the router I do a ping http://www.google.com it will connect to my DNS server, and resolve the address. After that I just get five periods telling me that it can't reach the host.
If I try the same ping from within Windows I get a response from the router that the host is unreachable. It seems as if the router isn't sending the packets back out to the internet gateway for some reason. I am only using the built in LAN interface on the router with two subinterfaces defined for the VLAN switching.
Am I missing something here? Any ideas of what my problem might be? Thanks in advance for any help.