LAN cats sometimes light does not shine well! ! Look carefully at! !

Eight buildings computer, ADSL4M speed,
Network:ADSL cat – Internet routers – switches – Power PC computer at home
symptoms:
go there for the first time, the whole floor dropped, more or less the Look, the cat ethernet light does not shine, I think that no cause illness, the cat's confidence about the resumption of the symptoms disappear, then routing is TPLINK, about 100 of that, you know it! I am afraid there are routing problems, and then changed to the exclusive use of the Internet.Tied to a network card, I left! Left the recurrence of symptoms and a half hours! a second
again, the cats or ethernet light does not shine, leaving the mind, I received a WAN routing the cable show, on the instrument into line, 1-8 followed by flash lights , And then to line the route back to play WAN port, and then inserted into the mouth of a cat that sucked into line on the instrument, and the emergence of the phenomenon of a few do not have lights 1-8 does not shine, I did not care , And the cat all the power routing, network-wide re-inserted line.The good.I changed the last route, like this, I have a cat and cable for a try, and then, I would net Line and replaced all the cats! But the day did not go wrong, the problem today, here we go again! ! !
in the end I would like to ask, where is the problem ????

yes, it is you do not increase the network Stability, you can find or Netcom's telecommunications staff to see the next since the hard-for-all, it is necessary to consider the soft side, local area network problems ah, now arp crazy virus attacks, and the end of the Super p2p network management what , To suggest that you each have installed a firewall arp, and Thunder would be off network router, you can go to a lot of people look at the Thunder forum to reflect.Telephone lines directly into the cat, if not to re-consider Your cat's away from the communications room

have been the work of ADSL in the 4M is not very good, far away, and then line a little bit worse not sure, telephone lines are too small and not be what's now business Special black, with long lines, it will be of such a volatile issue