this teh configuration in the interfaces:

SW_NEIV_01#sh run inter gigabitEthernet 0/1

Building configuration...

Current configuration : 59 bytes

!

interface GigabitEthernet0/1

switchport mode trunk

end

if you need more information, please tell me

only had configured this:

SW_NEIV_01#sh run inter gigabitEthernet 0/2

Building configuration...

Current configuration : 59 bytes

!

interface GigabitEthernet0/2

switchport mode trunk

end

What's you media-type? Are you using fiber SFP? If so, you can't specify duplex because it's full duplex by nature.

Here's the output from my switch.

Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP.

I think you can still change the speed/duplex if the port is routed and not switchport.

I don understand what is a port routed or how is the configuration for put a switch port routed?

no, don't is fiber is utp pair twister

Change it to a non trunk port and then change the speed and duplex.

i tried change this but still don't works

SW_NEIV_01#sh run inter giga 0/2

Building configuration...

Current configuration : 59 bytes

!

interface GigabitEthernet0/2

switchport mode trunk

end

SW_NEIV_01#conf ter

Enter configuration commands, one per line. End with CNTL/Z.

SW_NEIV_01(config)#inter giga0/2

SW_NEIV_01(config-if)#no switchport mode trunk

SW_NEIV_01(config-if)#

SW_NEIV_01(config-if)#duplex

^

% Invalid input detected at '^' marker.

SW_NEIV_01(config-if)#

mqayoolsuhsc is right. Your media type shows that Gig 0/2 is using a GLC-TX. This SFP will NOT negotiate speed/duplex setting. GLC-TX SFP negotiates to speed 1000 and FULL Duplex, period.

Hope this helps.

i belive that the matter is for the IOS: 12.2(35)SE5