Dell S3048-ON Configuration Manual page 351

4 Access the port.
CONFIGURATION mode
interface interface-type
5 Set the local port speed.
INTERFACE mode
speed {10 | 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 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 command.
Dell#show interfaces status
Port Description Status Speed
Gi 1/1 Down
Gi 1/2 Down
Gi 1/3 Down
Gi 1/4 Force10Port Up
Gi 1/5 Down
Gi 1/6 Down
Gi 1/7 Up
Gi 1/8 Down
Gi 1/9 Down
Gi 1/10 Down
Gi 1/11 Down
Gi 1/12 Down
[output omitted]
In the previous example, several ports display "Auto" in the Speed field. In the following example, the speed of port 1/1 is set to 100Mb and
then its auto-negotiation is disabled.
Dell#configure
Dell(config)#interface gig 1/1
Dell(conf-if-gi-1/1)#speed 100
Dell(conf-if-gi-1/1)#duplex full
Dell(conf-if-gi-1/1)#no negotiation auto
Dell(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
no ip address
speed 100
duplex full
no shutdown
Duplex Vlan
1000 Mbit Auto 1
Auto Auto 1
Auto Auto --
1000 Mbit Auto 30-130
Auto Auto --
Auto Auto --
1000 Mbit Auto 1502,1504,1506-1508,1602
Auto Auto --
Auto Auto --
Auto Auto --
Auto Auto --
Auto Auto --
Interfaces 351