switch port mode problem

[adventrskr]

I am trying to change the following gig ports to switchport mode trunk, and I get an error stating that i cant because the port is already in encapsulation AUTO mode. help please, i just want to change them over, and I cant fig out the commands:

interface FastEthernet0/23
switchport mode dynamic desirable
!
interface FastEthernet0/24
description Uplink to SVR1-24
switchport mode dynamic desirable
!
interface GigabitEthernet0/1
switchport trunk native vlan 100
switchport mode dynamic desirable
shutdown
!
interface GigabitEthernet0/2
switchport mode dynamic desirable
shutdown
!

TIA

 

[nichev]

have you figured out the problem ?
do you need any further assitance ??
what type is your Catalyst??

 

[RookThis]

try issuing switchport trunk encapsulation dot1q (or whatever trunking encapsulation it supports) first. Then issue switchport mode trunk