I am adding an additional network at my office. The new network is going to be on a cisco 2950 switch that is connected to a "Layer 3" Cisco 3550 switch. I have the ports on the 2950 going to the 3550 set as "switchport mode trunk". On the 3550, I have the port configured with "switchport trunk encapsulation dot1q" I can't get these two switches to communicate. Any Ideas?