I have opened a conversation an 01/17/08 (SFP performance) and I found the problem myslef.
When I configure qos globally of my 3560 (mls qos), the performance of fiber link (SFP's) ist very bad.
But I don't understand why is it so.
QoS on the interfaces is disabled, QoS maps are default. Why is the performance over fiber bad when QoS is globally enabled????? Is it a bug ????