I have 3 wireless connected XP PCs and 1 wired XP PC in my LAN. All PCs have manually configured TCP settings and are part of the same workgroup. I tested the LAN with the ping command and are machine respond correctly. Accessing the PC shares through network neighborhood works also. But after a few minutes of idle time one of the wireless PCs becomes unreachable. Both by ping and network neighborhood. But I can still reach web pages and ping addresses outside my LAN at the same time the PCs inside can't reach it. Then after a few more minutes the PC responds again to pings. It's like the network adaptor lost connection to the LAN and not outside the LAN. A Netgear WG111 USB network adaptor connected to this PC. What else can I do or check?
18 years ago