Administrator Guide

Setting the Speed and Duplex Mode of Ethernet Interfaces
To discover whether the remote and local interface requires manual speed synchronization, and to manually synchronize them if necessary,
use the following command sequence.
1 Determine the local interface status. Refer to the following example.
EXEC Privilege mode
show interfaces [interface] status
2 Determine the remote interface status.
EXEC mode or EXEC Privilege mode
[Use the command on the remote system that is equivalent to the rst command.]
3 Access CONFIGURATION mode.
EXEC Privilege mode
config
4 Access the port.
CONFIGURATION mode
interface interface slot/port
5 Set the local port speed.
INTERFACE mode
speed {100 | 1000 | 10000 | auto}
NOTE
: If you use an active optical cable (AOC), you can convert the QSFP+ port to a 10 Gigabit SFP+ port or 1 Gigabit
SFP port. You can use the speed command to enable the required speed.
6 Disable auto-negotiation on the port.
INTERFACE mode
no negotiation auto
If the speed was set to 1000, do not disable auto-negotiation.
7 Verify conguration changes.
INTERFACE mode
show config
Example of the show interfaces status Command to View Link Status
Example of Setting Port Speed and Disabling Auto-Negotiation
NOTE
: The show interfaces status command displays link status, but not administrative status. For both link and
administrative status, use the show ip interface [interface | brief] [configuration] command.
Dell#show interfaces status
Port Description Status Speed Duplex Vlan
Te 0/1 Down Auto Auto --
Te 0/2 Down Auto Auto --
Te 0/3 Down Auto Auto --
Te 0/4 Down Auto Auto --
Te 0/5 Down Auto Auto --
Te 0/6 Down Auto Auto --
Te 0/7 Down Auto Auto --
Te 0/8 Down Auto Auto --
376
Interfaces