On 11/18/14, 2:16 AM, M K wrote: > Hi all , we were arguing about the full duplex FE interface and it's speedIs > it true that this interface can handle 100Mbps send and 100Mbps receive at > the same time? like it is 200Mbps ?
To be more precise, the throughput in either direction is limited to 100 Mbps but traffic can flow in both directions at the same time. If you have an expressway with lanes in both directions and a speed limit of 100 MPH, you don't call it a 200 MPH expressway. (That's full-duplex). If you have a single-lane road with a speed limit of 100 MPH then you can transmit at up to 100 MPH in one direction at a time. Attempting to transmit in both directions at the same time results in what is referred to as a collision. Collisions reduce throughput as the debris must be cleaned up and then retried. Salespeople have been known to refer to T-1 circuits as 3Mbits/s and 100Mbps full-duplex Ethernet as 200 Mbits/s. This is considered to be nitrogen-rich organic fertilizer by those with clue. -- Jay Hennigan - CCIE #7880 - Network Engineering - j...@impulse.net Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
