I'm using GLC-T modules on a 4500X to hopefully support older 100/10 equipment. I'm using IOS version 3.9, and from what I can see 100/10 support was added to the 4500X in 3.7.
When setting the speed to 100 or 10, the throughput between two servers(tested with iperf) is less than 5% of what's expected.
I tried this using the modules in a 3850 and everything worked properly.
Any ideas?
