Duplex Mode Switch

The 10/100 Fast Ethernet Switch supports full duplex operation on all 10 and 10/100 ports. When operating in full duplex mode, ports can transmit and receive simultaneously. Each 10Mbps port must be manually set to the proper duplex mode (half or full), but the switch can be set to auto-detect the duplex mode for ports 1 and 2 (the two 10/100Mbps ports).

To change the duplex mode, change the Duplex Mode DIP switch setting on the back of the 10/100 Fast Ethernet Switch. On the DIP switch, for ports 1 and 2, down is auto-detect, up is full-duplex. If port 1 or 2 is set to auto- detect the duplex mode but is connected to a device that is unable to broadcast its operational mode, the port will default to half-duplex operation.

For all other ports (3 - 10 or 3 - 18) up is full duplex, down is half duplex, and the switch numbers correspond with the port numbers. It is not necessary to turn off the device when changing the duplex mode setting. For more information, see “Setting the Duplex Mode” in the next chapter.

Note:	Full-duplex mode can only be used for
	connections to other switches or to network
	stations. Connections to hubs must use half-
	duplex mode only.

Overview