What does a link light on a router mean? Does it mean that the router and NIC both have power? More than that? I had a link on a router, but could not ping the router from the PC. I switched ports, and got communication. Do I know if the port was bad or is it possible this is a coincidence? Can a port be intermittently bad, while still providing a link light also? 3com software says the NIC is working properly. (?) John