Thanks but it doesn`t work for me

EQ2(config-if-Gi2/0/21)#do show running-config interface port-channel 1

switchport mode trunk

EQ2(config-if-Gi2/0/21)#do show running-config interface gigabitethernet 2/0/21

channel-group 1 mode active

spanning-tree portfast

switchport access vlan 192

EQ2(config-if-Gi2/0/21)#no channel-group 1 mode active

                                               ^

% Invalid input detected at '^' marker.

EQ2(config-if-Gi2/0/21)#

even if i type these lines also failed.

EQ2(config)#no interface port-channel 1
^
% Invalid input detected at '^' marker.

EQ2(config)#no interface port-channel

An invalid interface has been used for this function.

EQ2(config)#

it`s weird...

If you do

EQ2(config-if-Gi2/0/21)#no ?

what options do you have?

Hi, try this:

- Login in WebMode (with r/w access)

- Navegate to Switching, Ports, LAG Configuration

- In the first BOX select Po2

- Delete the description box, 

- Click Apply, then Save

- Show again the running config  and that's it 

If you want to delete the port channel and trunk 

#int port-channel 1

#no switchport mode

If you want to delete particular interface through port-channel

#int gig1/0/21

#no channel-group

If you want to remove port channel follow this steps

#int port-channel 1

#no switchport mode

If you want to remove particular interface through the port-channel need to follow the steps,

#int gig1/0/12----- for example

#no channel-group

It will work,

If you want remove the particular interface, need to overwrite the commds, automatically it will overwrite,

suppose,

#int gig1/0/12

#sw mode access

I need to remove access port and make trunk, need to follow these steps,

#int gig1/0/12

#sw mode trunk

#sw trunk encapsulation dot1q

Solltet ihr was mit "switchport general ..." konfiguriert haben, müsst ihr das entfernen "switchport general allowed vlan remove *VLAN's*"

Thanks for the commands.. you just saved me a bunch of time.   Used on a S5248-on