Etherchannel stop communication

[hhakimi]

Hi After creating L2 etherchannel all the devices stop communication

Did I miss anything

I changed the mode from static to PAGP an LACP but still same

If anyone can help me will be much appreciated Thanks 

[bonkeselemani]

check the bandwidth

if they all trunk

or all ports must allowa the same vlan

if you use PAGP make sure one side is desirable and another one auto

or you want to use LACP make sure one side is active and another passive