Reference Guide

Defaults auto
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Supported on LC-EH-GE-50P or the LC-EJ-GE-50P cards.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
E-Series legacy
command
Usage
Information
This command is found on the 10/100/1000 Base-T Ethernet interfaces.
When you enable auto, the system performs an automatic discovery to determine the optics
installed and configure the appropriate speed.
When you configure a speed for the 10/100/1000 interface, confirm the negotiation auto
command setting. Both sides of the link must have auto-negotiation either enabled or disabled.
For speed settings of 1000 or auto, the software sets the link to auto-negotiation and you
cannot change that setting.
In FTOS, the command speed 100 is an exact equivalent of speed auto 100 in IOS.
NOTE: Starting with FTOS version 7.8.1.0, when you use a copper SFP2 module with
catalog number GP-SFP2-1T in the S25P model of the S-Series, you can manually set its
speed with the speed command. When you set the speed to 10 or 100 Mbps, you can also
use the duplex command.
Related
Commands
duplex (10/100 Interfaces) — configures duplex mode on physical interfaces with the speed set
to 10/100.
negotiation auto — enables or disables auto-negotiation on an interface.
speed (Management interface)
Set the speed for the Management interface.
S4820T
Syntax
speed {10 | 100 | auto}
To return to the default setting, use the no speed {10 | 100} command.
Parameters
10 Enter the keyword 10 to set the interface’s speed to 10 Mb/s.
614