Switch Technology: Wireless switch failure analysis investigation – switches, fa
Wireless Switch Be Network The ease Center, then if the wireless switch fails, the network can easily paralyzed. Then we will introduce wireless switch fault troubleshooting and solutions. Through this article I hope that we can as soon as possible to solve their network problems.
Wireless LAN switch is a central "hub" device, for some larger and more frequent use of the network where wireless switch is very common, in such a complex work environment, the network must be different Switches with different work arrangements to make.
Because our random deployment may be to the normal network operation and maintenance to bring hidden dangers. Now, this article and share a cascade port as the changing of the switch can not access the case, hoping to help us bring efficient management of local area network. Failure phenomenon
large local area network in a building, about 300 computers spread around the various floors, each floor units stationed in different, some only a flat floor, some floor also contains up to four units; for efficient management of both building the network, but also ensure that the building of the various units of Internet security.
Network administrator to manage the H3CS3050 selected as a floor switch type switches and floor switches in the home according to the number of different units, each unit is divided into a virtual work separate subnet, so to an interior of their flats if network suffered a virus attack.
Will not affect normal access to other units, while network administrators to exclude network failure, the only scope to troubleshoot a virtual lock on the work of a subnet without having to conduct large-scale search, troubleshooting node. After the network administrator of rational planning, correct configuration, the various units in the building work subnet can usually normal access Internet network.
However, recently there are some units moved into buildings in order to ensure that the personnel of these units can normally access, network administrators had forced some of the building the network upgrade. Now, network administrators plan to S3 in the third floor of the floor to the fourth floor to place the wireless switch, and let it and already placed in the floor of the fourth floor of the S4 switch cascade.
Previous floor switches S3 through an exchange of port and building the network core switch cascade, in the change location, change the switch to use two switch ports and switch S4 floor cascade. Changes in after the completion of a physical connection.
Network administrators found, set in the floor switch S3 subnet 5 virtual work, virtual work can not normally access subnet 6 Internet network, and this let network administrators fail to understand why the switch or switches that , each virtual subnet configuration parameters work no change, just change the look of the cascade switch port, switch on the division of the work of all the virtual subnet why can not properly access the network out?
Wireless switch failure analysis investigation 1, testing the wireless switch status
After careful analysis, network administrators that support Plug and Play feature for those who switch, the changes cascade switch port, the switch should not affect the corresponding virtual work under the working status of the subnet, but now S3 Floor cascade port switch position change, the division of the virtual switch in the subnet work 5, the virtual work can not normally access subnet 6 Internet links.
Clear that the wireless switch failure is due to the cascade port switch caused by the change. Taking into account the floor switch S3 is now the floor through the switch S4 connected to the building network will not be a floor switch S4 abnormal working conditions, causing the wireless switch S3 floors of virtual work the following subnet normal access Internet network?
Thought of it, the network administrator immediately following the switch from the S4 floor subnet virtual work to find a computer for Internet tests revealed that the computer can normally access; network administrator or a little bit worried, he successively Select the other computer online testing, test results are normal, indicating the working status of the switch S4 floor normal.
2, test cascade port status
After the investigation, the network administrator to determine the problem lies in the floor switches S3, S4 floor cascade port on the switch, so he intended to check the details of the two exchange-port configuration information. Note made up, the network administrator immediately switches were connected to the cable with the control switch S3 floor, and then log into the S3 Super terminal floor switch back office systems.
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