I have a network router question. I live on a campus of a small African college and help them with computer stuff. The campus here has a cisco router as the main one that connects us to the internet. There are then various other routers, switches, etc. around campus. One of the other smaller routers is a Linksys wireless router that is near to where we live that provides wireless access to the network for people like us. The wireless router periodically stops being able to give us access to the internet. Sometimes this happens every hour, sometimes it can work for days. So the symptom is that everything will be working normally and then all of a sudden, I can't access the internet, but I can access anywhere else inside our LAN. And it's not just our computer; all the computers that are connected to the wireless router stop being able to access the internet. I can't even ping an address outside of our LAN.
The wirelss router has a static IP address. The way to make it start working again is to change the static IP address. When I do that, everything works fine again. And it's not just a matter of rebooting the wireless router. If you reboot it without changing the IP address, it doesn't work. So that (along with the fact that I can still access anywhere inside the LAN when the internet stops working) makes us think that it's not a problem with the wireless router itself, but with the main Cisco router, that it somehow only lets a limited amount of internet traffic through to the wireless router's IP address and then cuts it off until the its IP address changes. When this problem is occurring, I can ping 192.168.0.6, which is a computer on the network on the other side of the router. But I can't ping220.127.116.11, which is an ip address used by Yahoo. As far as our wireless router goes, both 18.104.22.168 and 192.168.0.6 are outside, so why would I be able to ping one and not the other.
Have you ever heard of something like this? Do you have any ideas on this? Thanks, John