Classic case tracking analysis of wireless router fault

The deployment of wireless networks in an enterprise environment facilitates the mobile office within the enterprise. The wireless router is the core component of the wireless network, and its running state determines the transmission capability of the wireless network. Because of this, it is the administrator's first concern to maintain the wireless router so that it runs safely and efficiently.





Below a few examples of the classic wireless router, I hope to help you.





Case 1: Unable to log on to the wireless router settings page for routing settings





Reason: Troubleshoot the hardware and its connection, mainly because the connection created before landing is incorrect.





Troubleshooting:





First step: first check the router and computer hardware wireless connection, check the router LAN port LED is normal.





The second step: if the computer has a firewall or real-time monitoring of anti-virus software, are temporarily shut down, and then set the native IP address to the same network segment with the router, and then set the gateway address to the router's default IP address.





Step three: Open the browser's Internet Options dialog box, in the connection option, if you have created a connection, check the "Never Dial connection" option, and click the "LAN Settings" button to uncheck all the selected options.





Case 2: Prompt network impassability, connection error





causes: Hardware errors, connection failures, and the settings of the wireless network card may cause network connectivity problems.





Troubleshooting:





First step: The first thing to check is the connection configuration on whether there is error, to ensure that the router power is normal under the premise of viewing the broadband access, the router on the LED can indicate whether the broadband line access to the normal, by the manual can identify which light for the broadband access and client side, to observe the light flashing state, Continuous flashing is normal, not bright or long light does not flicker as a fault. We can switch to a broadband rubber line instead of the original line to connect.





The second step: if the fault is still, look at the location of the router and the computer to receive the distance is too far or the middle of a large barrier barrier. At this point, please reseat the router so that the wireless router and the receiving computer do not have too many obstacles, and so that the receiving computer in the wireless router signal launch range can be.





Third Step: Wireless network card inspection is also essential, you can replace the new network card and reinstall the driver for debugging, and then click "View Available wireless connection" Refresh "network list" after setting network card parameters, and then "properties" to see if there is no data sent and received, troubleshooting.





tip: Of course, the router's own hardware failure is also the direct cause of the line impassability, but this is not what we can solve the scope, should promptly contact the manufacturer for repair or replacement.





Case 3: Some or all of the computers cannot connect to the wireless network





Reason: Improper setting of the computer or router makes the wireless network connection wrong.





Troubleshooting:





first step: from the computer setup to start the investigation, the computer's settings are relatively simple, click into the "Network Neighborhood" attribute, open "wireless network Connection", and then set the "IP address" subnet mask and "gateway", so long as the computer's IP address and wireless router IP address on the same network segment can be. The "gateway" setting can be seen in the NIC description, which is typically the same as the router IP address.





The second step: from the router's settings to start troubleshooting, the router is relatively professional, more complex. First in the System browser to enter the wireless router IP address, in the pop-up login interface to enter the router's administrator login name and password to enter the Setup interface. At this point need to check the network service provider to your broadband account and password is correct, if not correct, try to connect after correction, if you cannot open the page after the connection, click Enter the "Security settings" option in the router to see if the "Network Firewall", "IP address Filtering" and "MAC address filtering" options are turned on. and make corrections and settings to eliminate the failure to open the network.


Case 4: Abnormal phenomenon in the network, the network intermittent, very abnormal





Cause: Wireless networks are under attack by viruses, such as ARP attacks, and an attacker illegally invading an unprotected wireless LAN causes networking anomalies. ARP attacks can cause network IP conflict, data loss and overflow, even more will lead to network paralysis. The negligence of the administrator and the lack of security protection in the late, resulting in a small number of malicious hackers on the enterprise's important information and confidential data caused great harm.





Troubleshooting:





first step: First into the "Safe Mode with the network", the wireless network card properties to replace the computer's IP address, and then see if it can be networked.





Step Two: Go to the router "Security settings" option for advanced settings. Today, most wireless routers have WEP password encoding function, with the longest 128bit password to encode data, communication on the wireless router, password key length can choose 40bit or 128bit, Using MAC addresses and preset network IDs to restrict which wireless cards and access points are accessible to the network, can guarantee the network security completely, for illegal receive this, intercept the wireless network signal is very difficult, thus can effectively guard against Hacker's intrusion to destroy and the illegal user malicious network attack.





Step Three: Disable Remote Web Management in the router without special needs or expertise, and feature options.





tip: Buy installation professional anti-virus software and network firewall is one of the more shortcut methods.





Case 5: Part of the wireless router fails to function





reason: This problem mostly exists in some old wireless router, when we configure the Router Advanced function option, in the repeated confirmation of the connection is correct, there is a part of the function can not be opened to use.





Troubleshooting:





First step: First we want to look at the next router system version, after consulting the wireless router instructions, see whether this feature supports this version of the router system. Routers often have many versions of the system, and each version supports different functions. If your current version of the software does not support this feature, then you should find the appropriate software to upgrade first.





Step two: Tap into the wireless router's "tools" option, after entering the "software Upgrade", at this time in the dialogue interface will display the current version of the software and hardware version, in the pop-up dialog box entered the "filename" (that is, the system upgrade file name) and "TFTP server IP" after the "upgrade" can be.





tip: The upgrade should be careful to select the current hardware version of the same software upgrade, in the upgrade process should not turn off the power of the router, otherwise it will cause the router to be damaged and unusable, in the case of network stability, the process of upgrading is very short the entire process will not be more than a minute When you find that the router reboots after the upgrade, do not worry that this is normal. After a general upgrade, the router works more stably and adds some new features that apply to this release.





Summary:





Wireless local Area network adapts to the need of enterprise informatization, it is a good solution for enterprise's information circulation and mobile office. But it is an unreliable network, therefore, in addition to strengthening network management, enterprise administrators need test equipment construction, implementation, maintenance and management, wireless router maintenance is one of the important aspects.