In my case I was troubleshooting an interface that had to be 100Mb. But these commands can be used on other interfaces. There are other commands to use but I notice most people don’t use these.
1. show controllers utilization = real-time bandwidth utilization
2. show controllers ethernet-controller = very good counter with specific line errors. This is very good because not everyone knows how to clear these 😉
Cisco Troubleshooting Interface Issues
