I'm trying to create a trunk connection between a 2924 Cisco switch and a 2960. I can set the mode to trunk on the 2960 just fine. I connect the the two switches with a cross-over cable and the connection goes down. The port on the 2924 goes green/yellow. If I leave the port on the 2924 as "mode access" the two switches can see each other but the VLAN database does not update on the 2960.(2924 is the vlan server).