Feb 14, 2012
I am setting up a new E4200 modem, and have not been able to use the wired connection. The Windows 7 diagnositic on all three computers tells me "Local Area Connection, doesn't have a valid IP configuration."Model: E4200v1..I am using a new E4200 router, along with a new SE1500 5-port switch and a new SE2800 8-port switch.I am using a wired network that consists of two desktop computers, a laptop computer, a network printer, three Direct TV recorders, two Roku streaming video players, a BluRay player, and an XBox gaming console.Here is what I have done so far.
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1- I can bypass the router to establish a direct wired connection to the cable modem. This works to access the internet. It establishes a new wired connection called Network 2.
2- I can access the internet using the wireless connection to the router. It shows a valid IPv4 address.
3- With all cables in place, all the lights are flashing on the router and on the computers.
4- I had changed cables and swapped cable ends.
5- Using the wireless connection, I can access the router home page (192.168.1.1). It shows valid IP addresses.
The problem is that my old Linksys BEFSR81 stopped working, with the same eror message for the LAN connection, "Local Area Connection, doesn't have a valid IP configuration."How often does the WAN port go bad? On both a five-year old BEFSR81, and a brand new E4200?