Am 28.10.2012 18:30, schrieb Bob Puff: > One, with a Cisco router - it auto-negotiated every time to half duplex, even > though it really -was- full. Use mii-tool to find out. That's the typical effect when one side is configured to "full duplex" and the other side to "auto negotiate". The side with the fixed configuration will not reply to the negotiation packets, whereupon the other side will fall back to half duplex. -- Tilman Schmidt Phoenix Software GmbH Bonn, Germany