I have a custom built computer, which we will call X, and an IBM ThinkCentre which are both connected to a Allied Telesyn fast Ethernet switch. The switch is connected directly to port one of a Comcast wireless router, port two and three being connected to a family computer and a small Dell desktop server, respectively.
The problem I have lies in the switch and X. When X and the IBM are both plugged in to the switch, a mysterious thing happens. If the IBM is on and plugged in to the switch without X, it receives network status and Internet access. If X is turned off and then plugged into the switch, the IBM continues to receive network status. If X is then turned on, all is normal. However, when X is then turned off while connected to the router, the IBM and any other device plugged into the router loses network status (appears as offline in the router). Furthermore, when X is unplugged from the router, on or off, all other devices on the switch regain (or continue to have, if applicable) network status and appear in the router's settings as online once again. I can set a static IP for the IBM on the router and then go into the network card IPv4 settings to set that up on the machine, and then there's no problem. However it's a great hassle as our computers are often taken to other locations and need the ability to use multiple IP addresses. Also, it's worth noting that X will always connect to the network, IBM or not.
I've posted about this twice on StackExchange's Super User site and received ideas along the lines of X providing DHCP addresses, which it's not. It's not set up to, one, and the IP address is coming from the router as X can be unplugged when a new device is added and the router will communicate. Another idea was that I was using a media converter. I don't know what that is, or how it functions, but I do know I don't have one. Someone else said ICS (Internet Connection Sharing), which is only enabled if you have multiple network interfaces on one system.
Both computers are using Windows 8 Professional, X being 64-bit and the IBM being 32-bit.
Thoughts? It's a persistent problem and I hate it.
The problem I have lies in the switch and X. When X and the IBM are both plugged in to the switch, a mysterious thing happens. If the IBM is on and plugged in to the switch without X, it receives network status and Internet access. If X is turned off and then plugged into the switch, the IBM continues to receive network status. If X is then turned on, all is normal. However, when X is then turned off while connected to the router, the IBM and any other device plugged into the router loses network status (appears as offline in the router). Furthermore, when X is unplugged from the router, on or off, all other devices on the switch regain (or continue to have, if applicable) network status and appear in the router's settings as online once again. I can set a static IP for the IBM on the router and then go into the network card IPv4 settings to set that up on the machine, and then there's no problem. However it's a great hassle as our computers are often taken to other locations and need the ability to use multiple IP addresses. Also, it's worth noting that X will always connect to the network, IBM or not.
I've posted about this twice on StackExchange's Super User site and received ideas along the lines of X providing DHCP addresses, which it's not. It's not set up to, one, and the IP address is coming from the router as X can be unplugged when a new device is added and the router will communicate. Another idea was that I was using a media converter. I don't know what that is, or how it functions, but I do know I don't have one. Someone else said ICS (Internet Connection Sharing), which is only enabled if you have multiple network interfaces on one system.
Both computers are using Windows 8 Professional, X being 64-bit and the IBM being 32-bit.
Thoughts? It's a persistent problem and I hate it.