Hi I know that there is a lot this could be. I have a Windows 2008 Enterprise server with Hyper-V with 2 servers, one is DHCP the other is DNS and AD. I have a 2821 Cisco router that on one side is my LAN the other my WAN with a DSL router
from Verizon. The 2821 does not have DNS or DHCP enabled on the router. just "ip route 10.10.10. 255.255.255.0 192.168.1.1" and the port configs, I do have port G0/0 the WAN port configured as a DHCP client. From the router console I can ping
any ip address or .com on the internet and get a reply. The story is different from within my LAN, I can ping my gateway 10.10.10.1 and the WAN port 192.168.1.45....that's it. I can ping the servers and they can ping the same as above .
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