Service Manual

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 | stack—unit stack-unit-number] 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 first command.]
3. Access CONFIGURATION mode.
EXEC Privilege mode
config
4. Access the port.
CONFIGURATION mode
interface interface slot/port[/subport]
5. Set the local port speed.
INTERFACE mode
speed {10 | 100 | 1000 | auto}
6. Optionally, set full- or half-duplex.
INTERFACE mode
duplex {half | full}
7. Disable auto-negotiation on the port.
INTERFACE mode
no negotiation auto
If the speed was set to 1000, do not disable auto-negotiation.
8. Verify configuration changes.
INTERFACE mode
show config
Example of the show interfaces status Command to View Link Status
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 | linecard slot-number] [configuration] command.
Dell#show interfaces status
Port Description Status Speed Duplex Vlan
Te 1/1 Down 1000 Mbit Auto 1
Te 1/2 Down Auto Auto 1
Te 1/3 Down Auto Auto --
456
Interfaces