Turning off Autonegotiation on a Gigabit Ethernet Port

In certain interoperability situations, you need to turn autonegotiation off on a fiber gigabit Ethernet port. Although a gigabit Ethernet port runs only at full duplex, you must specify the duplex setting. The 10 Gbps ports do not autonegotiate; they always run at full duplex and 10 Gbps speed.

The following example turns autonegotiation off for port 1 (a 1 Gbps Ethernet port) on a module located in slot 1 of a modular switch:

configure ports 1:1 auto off speed 1000 duplex full