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Implementing Cisco Networking Solutions by Harpreet Singh

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Troubleshooting device level issues

By far the most troublesome issues to detect are the device related issues, where the device behaves erratically and there is no obvious reason.

Device level issues can be attributed to a hardware or software version running on the devices. A hardware-level issue is relatively easy to troubleshoot if the entire line card or a device is faulty. If this happens to be a port amongst a pool of ports on a card, this would still be tricky. A software issue, on the other hand, is the trickiest part, as the software behaving erratically due to a software bug can be transient and might not always provide the right output through show commands to troubleshoot.

Most commands that can help an engineer check and validate ...

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