I have discovered slow performance in various portion of my network accessing network drives and server side applications.
When I logged into the switch providing access for these users I ran a show interfaces status which displayed all of the interfaces and their link speed. Most of which were 100Mb/s.
The switch is capable of Gigabit speeds. I also noticed that when I connected a Gigabit 5 port switch in my office to re-image a few machines with Windows 7; the link light for Gigabit never came on. My IT Manager (the other 50 % of our IT Dept.) decided to take the network jack off of the wall and we discovered it was a CATEGORY 4 CABLE!
We then proceeded to delve deeper into the issue with some handy Cisco show commands; namely show mac address-table and it shows us every MAC that has ever been connected to the interface.
Long story short I want an easy way to determine link speeds and their associated MAC addresses so we can determine which offices were terminated in Category 4 and or workstations that don't have Gigabit Ethernet Cards. We have patch cords to replace the ones that we found in the network closet next week to have as little downtime as possible.
Thanks in advance for any advice.