I've just bought a CE500, and am attempting to link it up to an existing 3560, via the gigabit port on the CE, to a GLC-T gigabit ethernet module on the 3560. When I plug the CE into the 3560, the error indicator comes on, and logging into the CE I find an error message on the gigabit port, This Port blocked by spanning Tree.
The config on the 3560 is:
switchport trunk encapsulation dot1q
switchport trunk native vlan 100
switchport mode trunk
The GUI on the CE for the gigabit port is set to Switch, VLAN 100.
Please also find enclosed a diagram of my network, as seen through CNA.
Thanks for any advice that can be offered.