Reference Guide

Interfaces | 613
speed (for 10/100/1000 interfaces)
c e s
Set the speed for 10/100/1000 Base-T Ethernet interfaces. Both sides of a link must be set to the same
speed (10/100/1000) or to auto or the link may not come upSyntax
speed {10 | 100 | 1000 | auto}
To return to the default setting, use the no speed {10 | 100 | 1000} command.
Parameters
Defaults
auto
Command Modes
INTERFACE
Command
History
Usage
Information
This command is found on the 10/100/1000 Base-T Ethernet interfaces.
When auto is enabled, the system performs and automatic discovery to determine the optics installed
and configure the appropriate speed.
When you configure a speed for the 10/100/1000 interface, you should confirm negotiation auto
command setting. Both sides of the link should 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.
Related
Commands
10 Enter the keyword 10 to set the interface’s speed to 10 Mb/s.
Note: This i speed is not supported on the LC-EH-GE-50P or the LC-EJ-GE-50P
card. If the command is entered for these interfaces, an error message appears.
100 Enter the keyword 100 to set the interface’s speed to 10/100 Mb/s.
Note: When this setting is enabled, only 100Base-FX optics are supported on the
LC-EH-GE-50P or the LC-EJ-GE-50P card.
1000 Enter the keyword 1000 to set the interface’s speed to 1000 Mb/s.
(Auto-negotiation is enabled. See negotiation auto for more information)
Note: When this setting is enabled, only 100oBase-FX optics are supported on
the LC-EH-GE-50P or the LC-EJ-GE-50P card.
auto Enter the keyword auto to set the interface to auto-negotiate its speed.
(Auto-negotiation is enabled. See negotiation auto for more information)
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 E-Series ExaScale
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
E-Series legacy command
Note: Starting with FTOS 7.8.1.0, when a copper SFP2 module with catalog number
GP-SFP2-1T is used in the S25P model of the S-Series, its speed can be manually set with the
speed command. When the speed is set to 10 or 100 Mbps, the duplex command can also be
executed.
duplex (10/100
Interfaces)
Configure duplex mode on physical interfaces with the speed set to 10/100.
negotiation auto Enable or disable auto-negotiation on an interface.