Troubleshooting Cisco Routers

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Cisco routers are known for their security, ease of use and adaptability in a variety of Internet environments. Cisco makes routers for small and large businesses, as well as the home, and provides worldwide support for its products. Knowing how to troubleshoot your router before calling a technician can save you time and a few headaches when trying to fix your Cisco unit.

Connectivity

  • Test to make sure the issue with your router is within your actual unit or whether the problem lies further up the Internet line. If you think all the configurations on your Cisco router are correct, and the unit seems to be functioning fine, you can use a line command, a basic language used by computers to communicate, to see whether your router has a valid connection from your Internet service provider.

    You can run ping, a basic line command that asks the Internet provider whether you have service, through your terminal or console by typing the "ExampleName#ping xx.xx.xx.xx" command, with the example name being the service partner and the series of x's being the IP address for your system. The ping command asks whether the connection you are using is alive. If you do not receive a response from the service provider, then you may wish to contact its support service.

Physical Connection

  • If the unit is not functioning correctly and a ping has confirmed that there is an Internet service being provided, check the hardware on your router. The first thing to do if you have not pinged through the router or otherwise communicated with it is to check that the unit is turned on. Most Cisco routers have a series of LEDs on the front of the box that tell you whether the unit is receiving power, has a valid Internet connection and is holding that connection. If the unit is turned on but there is no connection, and the LED verifying Internet connection is not illuminated, check all the wiring connecting the router to your Internet source to ensure that there is no damage and that it is all properly connected.

Slow Connection

  • If you are experiencing crashes on your network, copy the error code your router gives you and paste it onto a document for later use. Check all the connections between your router and the Internet box. If all these connections appear to be fine, take the error message you copied earlier and navigate to the Cisco website. Paste the error code in the Cisco sites search box, and search the site. Often you will get a reason behind the crash from here. If the connection is slow from your Cisco router, change your firewall settings to test whether or not it is the added security on your computer causing the slowdown. If you have attempted this and the connection is still slow, contact your service provider and have it test the connection strength to your house. A connection that is too slow, or too high, can cause router crashes.

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