To modify Duplex and Speed manually under trunk interface

[SREENATH R]

HI Team ,

Good day !!!!

May I know how to modify speed and duplex under a working trunk interface : I am using the image of : 

c2960-lanbasek9-mz.122-55.SE9/c2960-lanbasek9-mz.122-55.SE9.bin ( model : WS-C2960-24TT-L ). I have tried to modify the same, but not able to view the commands under the interface mode , is it due to bug OS ? If so migration to which ios image will resolve the issue ?

[Juan Ospina]

Hi SREENATH R,

See if this example works for you:

SWITCH-1(config)#int gi1/0/27
SWITCH-1(config-if)#speed ?
  10    Force 10 Mbps operation
  100   Force 100 Mbps operation
  1000  Force 1000 Mbps operation
  auto  Enable AUTO speed configuration

SWITCH-1(config-if)#switchport mode trunk
SWITCH-1(config-if)#speed ?
  10    Force 10 Mbps operation
  100   Force 100 Mbps operation
  1000  Force 1000 Mbps operation
  auto  Enable AUTO speed configuration

SWITCH-1(config-if)#duplex ?
  auto  Enable AUTO duplex configuration
  full  Force full duplex operation
  half  Force half-duplex operation

SWITCH-1(config-if)#

[Ganesh Hariharan]

Hello Sreenath,

What error are you seeing while issuing the command under interface level.

As speed and duplex command will always be available for all sorts of devices but support of 10/100/1000 depends.

-GI