Re: Poor throughput on Cisco 2611
A collision will only occur on a half duplex network. A full duplex network will not have collisions. If you have slow or sluggish throughput it could be any number of issues, but if this has only occurred recently it might point to a faulty NIC card on the network or a host with a virus trying to do a DOS attack on your internal network. I would suggest disconnecting each host individually and see if the slow throughput still occurs.