I have a Centillion 100 chassis with multiple etherspeed switch cards (16 port) and one ATMspeed/155 card with MCP port. I'm currently unable to communicate with the MCP port (cabling issue I think), but would like to just use the etherspeed cards as switches. When I connect to cisco devices and try to pass data (ping) I get no response, debugging tells me that I have an encapsulation failure. Do I have to have an etherspeed card with MCP port to support the etherspeed switch cards, or will the ATM card suffice?