background:

我们用的是starhub max 3000 上网的，router在master room, 然后一根网线牵到我们房间，再用一个hub 联到两台电脑上。

problem:

经常上网上的好好的，就不能上了。ip 还是有的。

temp sol:

restart rounter, 然后就能继续上网了。

trouble:

router 在master room, 一旦master room 的人出去了，我们就没辙了。

请教各位大虾怎么才能completely solve problem?

谢谢！

不然就装一个access point。因为hub receives a packet (chunk) of data at one of its ports from a PC on the network, it transmits (repeats) the packet to all of its ports and, thus, to all of the other PCs on the network. If two or more PCs on the network try to send packets at the same time a collision is said to occur. When that happens all of the PCs have to go though a routine to resolve the conflict, such as your case to restart the router. hub. When a person using a computer on a hub downloads a large file or group of files from another computer the network becomes congested.

But an Ethernet switch automatically divides the network into multiple segments, acts as a high-speed, selective bridge between the segments, and supports simultaneous connections of multiple pairs of computers which don't compete with other pairs of computers for network bandwidth. It accomplishes this by maintaining a table of each destination address and its port.

Few days ago I just checked with SLS and funan's challenger, a cheapest switch can cost about $20-$30, but SLS they have stocks but didn't want to sell at this price. Ask me to come back later next week.. -_-

try ping your router and see if you are getting response.
And if yes please see the router status is OK (software status via console/telnet and hardware status via checking the LED status).