How To Run Cable Test On Cisco Router?


If you’re in telecommunications, you know that Cisco routers play a pivotal role in your network. Whether you use them to manage traffic or connect devices to the internet, they’re an essential part of your infrastructure. But what do you do if something goes wrong with one of these devices? In this article, we’ll show you how to run cable test on Cisco routers so that you can diagnose and fix any issues as quickly as possible. Got questions about how to use a particular feature on your router? Check out this guide for step-by-step instructions on how to perform specific tasks. You’ll be able to solve any problem with ease!

How to run cable test on Cisco router?

Running cable test is a common procedure on Cisco routers in order to verify the integrity of cables and their connection to switches. The steps below will show you how to perform a basic cable test on a Cisco router.

First, identify which interfaces are connected to the cable(s) you want to test. For example, if you have three interfaces connected to the cable, interface Ethernet0/0 would be connected to the cable from your switch, interface Ethernet1/0 would be connected to the other end of the same cable from your switch, and interface Ethernet2/0 would be connected to another cable from your switch.

Next, enter clear text mode on each of the interfaces that are connecting to the cable. (For example: interface Ethernet0/0) Next, issue an exec terminal command such as telnet (the IP address of your router). If you don’t get an error message back when you try this command, then congratulations – you’ve successfully entered clear text mode on each interface!

To begin testing the connection between your router and each switch, issue a ping command from each of your routers (for example: RouterA ping This will help determine whether there is any communication between them! If everything looks okay and both routers can ping each other without issue, then it’s time for our final test…

Now that we know that there is communication between our routers, it’s time to test the cable itself! Issue a cable tester from your router (for example: RouterA cable tester). If the results of the cable tester show that there is an issue with the cable, then you will need to replace it. If everything looks okay and the cable test results show no errors, then congratulations – you’ve successfully tested your cable!

What are the steps in running cable test on Cisco router?

In order to test the cable connecting two Cisco routers, the following steps must be followed:

  1. Verify that both routers are up and running.
  2. Configure one router as a cable tester and the other as a receiving router.
  3. Connect the cable between the testers.
  4. Verify that traffic is flowing properly between them by executing a ping command from each router.
  5. Check for errors in the cables using the show ctp Command on each router.

    The show ctp Command displays all active Cable Traffic Protection (CTP) features on a Cisco router configured with CTP enabled:

    [output cut]

    The output shows that CTP is currently enabled on this router, and that it is protecting traffic over an EtherChannel link (L1 Type 5). The next step is to verify whether or not the cable is working properly by conducting a cable test.

How to troubleshoot issues during cable test on Cisco router?

If you are having issues with cable testing on your Cisco router, there are a few things you can do to troubleshoot the issue. First, make sure that the cable is properly plugged into the Cisco router and the correct port on the router. Next, make sure that you have installed the latest firmware for your router and that it is up-to-date. Finally, verify that all cables used during cable testing are also properly connected to your network devices and servers.

What You’ll Need:

In this blog post, we will show you how to run cable test on your Cisco router. Cable testing is a process that allows technicians to determine if there is any damage or malfunctioning on the network cables. The process begins by setting up an interface between the router and the tester. After that, the technician can run various tests such as speed, duplex, and signal strength.

Cable tester

If you are in charge of maintaining Cisco routers, then cable testing is an essential part of your job. Cable testing helps ensure that the cables connecting the router to the network are functioning properly.

There are a few different ways to run cable test on a Cisco router. You can use the command line interface (CLI) or the Network Diagnostic Tools (NDT). The following sections will show you how to do each method.


If you are experiencing some connectivity issues in your network, first check the physical connections between the devices. If everything is connected correctly, then examine the Layer-3 routing protocols and verify their operation.

Cable tester is a valuable tool for diagnosing cable problems. This article explains how to use a cable tester on a Cisco router.

When you run a cable test on a Cisco router, be sure to do the following:

  1. Disable any unnecessary services on the router.For example, if you’re testing an Internet connection, disable all non-essential services like DNS and DHCP.
  2.  Make sure that the correct cables are plugged into each device. Most cables have two connectors: one for transmitting data and one for receiving data. Make sure that the connector on the cable matches the connector on your device.
  3. Set up an input source and output source on your cable tester. This will allow you to test data transmission from one device to another.
    Test Points:

    * LAN1 (LAN interface): use this point to connect your computer to your router’s LAN port * WAN interface (WAN): use this point to connect your router to your ISP or another router in your network

  4. Connect your cable tester to the LAN1 test point and the WAN interface test point.
  5. Press the test button on your cable tester. You should see a signal strength meter move from 0 to 100%. The higher the number, the stronger the signal.
  6. Compare the result of your cable test with the signal strength shown in Test Points 4 and 5. If there is a discrepancy, check to see if the cables are plugged in properly and make sure that their connectors match. If all of these tests pass, then you may have a problem with your routing protocols.

Make sure all cables are connected properly

Make sure that all cables are connected properly between the router and the devices being tested. Poorly-secured cables can cause errors during testing.

Some common ways to check cable connection include:

  • Checking for continuity between the cable and ports on both devices
  • Looking for obvious problems, such as twisted or crossed cables
  • Using a tester that measures cable performance

Check for interference on the network

Cable testers are an essential tool for testing network performance. To check for interference on the network, first use a cable tester to measure the cable’s signal strength. Second, use a packet sniffer to capture and analyze packets flowing over the cable. Finally, compare the results of the two tests to see if there is interference present.

Check for proper operation of your router

If you are experiencing any problems with your router, it is important to check its proper operation. There are a few simple tests you can perform to troubleshoot common issues.

First, make sure your router is connected to the Internet and your devices are configured properly. Next, try basic network troubleshooting steps such as checking for duplicate IP addresses and verifying network connections. If those steps fail to solve the problem, try more advanced techniques such as tracing routes and performing Port scans. If those tests also fail to identify the issue, it may be necessary to open a support case with Cisco or another router manufacturer.

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