解决网内计算机间无法通讯的故障（Solve the problem of communication between computers in the network）.doc

解决网内计算机间无法通讯的故障（Solve the problem of communication between computers in the network） To solve the fault in network communication between computers cannot 2010-9-3 7:40:26 source: enter the forum add to Favorites Use the CISCO Catalyst 2950T-24-SMI electronic reading room: as sets of equipment and connected by a double strand and the center switch CISCO Catalyst library 3550-48-EMI. Since all users are unable to connect the engine room. Then the first suspect may be cascaded cable problems or cascade end in the same problem. So, the first cabinet library network management center in check the cascade port LED lights, there is no obvious abnormalities. In the electronic reading room li. Check a few computers, not only can not access the local area network and Internet, and even each other are not Ping, nor by finding ways to find each other. The diagnostic process A computer network card number of so many at the same time can not be damaged, therefore, the preliminary judgment of fault may be in cascade switches, cables and switch port. So, first, connectivity detection using twisted pair cable tester, found no problem. The cascaded cable to another port Catalyst switch on the 3550, and then inserted into another switch, the fault is not solved. Look at the lights of Catalyst2950T switch, which is inserted wire port. The lights are on, what seems to be no problem. The helpless, can only use the computer repair method commonly used replacement method with another standby switch replaces Catalyst 2950T. However, after a few minutes, the computer cannot access the Internet, they also broke the communication between. It seems, the problem is not in the Catalyst 2950T switch! Switch since it is not the reason, then, what is the cause of the computer network will lose the connection between each other in a few minutes? The reason is only one, that is the broadcast storm, from the card and broadcast storm caused damage! Turn off the power supply, Catalyst 2950T then sat to e