Dell N3200-ON Networking N-Series Switches CLI Reference Guide version 6.8.0 - Page 464

Failure to set both sides of a link to the same speed/duplex values (autonegotiation disabled) or compatible speed/duplex values (auto-negotiation enabled) may give a false link-up indication when configured or when the link is brought up (no shut). Setting one end of a link to auto-negotiate and the link partner to a fixed speed is not supported. Disabling auto-negotiation on interfaces that require it, for example, 1000BASE-X or 1G/10G copper interfaces, is not supported. Example The following example configures Gigabit Ethernet port 1/0/5 to advertise 100-Mbps operation only via auto-negotiation. console(config)#interface gigabitethernet 1/0/5 console(config-if)#speed auto 100 Command History The speed 10000 syntax was introduced in the 6.3.6 release. The 2500 and 5000 speeds were introduced in the 6.3.5 release. The description was updated in the 6.4 release. Syntax updated in firmware release 6.6.1 and 6.6.2. switchport protected Use the switchport protected command in Interface Configuration mode to configure a protected port. The groupid parameter identifies the set of protected ports to which this interface is assigned. You can only configure an interface as protected in one group. You are required to remove an interface from one group before adding it to another group. Port protection occurs within a single switch. Protected port configuration does not affect traffic between ports on two different switches. No traffic forwarding is possible between two protected ports. Ports in a protected group will not forward traffic to other ports in the group. Syntax switchport protected groupid no switchport protected • groupid--Identifies which group this port will be protected in. (Range: 0-2) Layer 2 Switching Commands 464