The solution to the problem of instantaneous drop of internet bar

Instantaneous drop line failure: The time lost packet two times that cause instantaneous break. Ping Intranet is normal at this time. The external network cable to the single test is also normal.

Solution 1: Close all switches within the LAN for 5 minutes. Reconnect the power to see if the network is back to normal! (Cause: It may be that the switch has not been restarted for a long time, causing a slow exchange of data, or blocking due to network storms) (another possibility is that one or more of the switch's interface modules are damaged, or the network is triggered by a switch failure, and the solution is to replace the switch)

Solution 2: Find a machine to install a COMMVIEW,IP address set to your router IP (unplug the router, make it out of the network) and then you look at what the intranet machine sent to the outside package, to see which machine contracts the most, to what IP hair? If a machine is found to send a large number of destination IP is a continuous package, and fast, please repair the machine! (May be the reason: one or more machines in the local area network infected with worms, in the crazy contract, resulting in router NAT connection quickly occupied)

Solution 3: If the above two reasons are excluded or unable to resolve their problems, your router may be poor performance and limited processing capacity. You can make software routers such as Route OS, or buy hard routes around 3000~5000, and replace them for observation.

Solution 4: The network network in a certain/several computers NIC interface damage, and non-stop to the network sent a large number of * data packets caused by congestion. (Integrated network card is prone to this problem, especially in the network more machines when this problem is more difficult to troubleshoot, you can try to disconnect a switch, to do a single check) in the confirmation of which switch inside the machine has problems. Open these machines, go to the desktop, exit all the management software, turn on the network connection, and, without doing anything, see who is in a large package or receive

Solution 5: This is a special case: someone using illegal software in a local area network attacks internet cafes or ARP virus attack network in the technician to make the master should each face shielding illegal attacks on the Internet bar some software and, if possible, to the gateway Mac static ARP binding now there are a lot of hard routers have a special anti-drop function, you can regularly broadcast the normal ARP packet, If you are the software routing can also be used to provide an anti-ARP attack software, the principle and ARP Trojan almost, broadcast ARP packet.