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 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

 

[ianuk1974]

You could try to default the ports in global config.

Switch(config)#default interface gigabit 0/1

then you can configure you ports accordingly.

Hope this helps.

 

[Jsteve]

If ianuk's suggestion does not work, try

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

 

[adventrskr]

Thanks guys I will try them, what i want to do is get rid of the "switchport mode dynamic desirable" completely, and have it replaced with "switchport mode trunk". Thanks

 

[lambent]

b4 forcing the switch port to "trunk mode" in some switches, you need to specify the encapsulation to either dot1q or isl.

So what you need to do is:

int f0/1
switchport trunk encap dot1q
switchport mode trunk