Port speed and duplex mode modification

The Gigabit Ethernet copper ports are designed to auto-sense and auto-negotiate the speed and duplex mode of the connected device. If the attached device does not support this operation, you can manually enter the port speed to operate at either 10, 100, or 1000 Mbps. This configuration is referred to as force mode. The default and recommended setting is 10/100/1000 auto-sense. Port duplex mode and port speed are modified by the same command

Note: You can modify the port speed of copper ports only; this feature does not apply to fiber ports.
Note: For optimal link operation, copper ports on devices that do not support 803.3u must be configured with like parameters, such as speed (10,100,1000), duplex (half, full), MDI/MDIX, and Flow Control.

Special Considerations

When connecting a 1G optic to a 25G port on an ICX 7850-48F or ICX 7550-4x25GF module, RUCKUS recommends disabling auto-negotiation on the remote device to avoid compatibility issues.

  • If the remote device is an ICX switch, use the gig-default neg-off command on the remote port.
  • If the connected device is from a different vendor, refer to their documentation for the equivalent command to disable auto-negotiation.

In this section:

  1. Port Speed and Duplex Mode Configuration
Parent topic: Basic port parameter configuration