Acer Aspire 9301 AWSMi Windows XP SP3 Media Center Edition laptop
Dlink DIR 615C router 3.12NA firmware
I am able to connect to the Dlink and to the Internet with the Acer wireless (Atheros chipset) interface.
If I disable the wireless interface and enable the wired interface (nVidia network controller chipset), the LAN connection interface sends packets but does not receive packets. 1-5 packets are received upon initiation (enabling) of the LAN connection but then receiving is disabled.
DHCP is disabled. The Windows firewall is disabled on both the LAN connection and wireless network connections. UpnP is enabled in XP and in the Dlink. XP automatically identifies the Dlink gateway in Network Connections when using the wireless connection but not when using the LAN (nVidia) connection.
With the LAN (nVidia) connection I can:
1. ping 127.0.0.1
2. ping 192.168.0.105 (its static IP address assigned in XP and in the Dlink)
3. ping 192.168.0.100 (another computer on the LAN)
I cannot ping the router gateway IP (192.168.0.1). The router and the other computer on the LAN are able to ping the laptop when it uses the LAN (nVidia) connection.
If I attach another laptop (Compaq NX9010) running XP SP3 to the router using the same network cable and another static IP address (192.168.0.102) defined in XP and in the Dlink, the other laptop can ping the router and can use the Internet with no issues. The routing table appears to be identical in this working case to the one reported by windows (route command) in the non-working case.
The Dlink defines no IP-specific or port-specific routing rules.
Thanks for any help or guidance or solution.