Switch Features 59Stacking Features (PCM6220 and PCM6348 Only)For information about creating and maintaining a stack of switches, see"Managing a Switch Stack" on page 135.High Port CountYou can connect up to 12 PowerConnect M6220 switches or 12PowerConnect M6348 switches in a single stack to increase the port count.Single IP ManagementWhen multiple switches are connected together through the stack ports, theyoperate as a single unit with a larger port count. The stack operates and ismanaged as a single entity. One switch acts as the master, and the entire stackis managed through the management interface (Web, CLI, or SNMP) of themaster unit.Automatic Firmware Upgrade for New Stack MembersIf a switch is added to a stack, and the switch is running an older version ofthe firmware than the other stack members, the firmware on the new memberis automatically upgraded to match the stack.Stacking Compatibility with the PowerConnect 7000 SeriesPowerConnect M6348 switches and PowerConnect 7000 Series switches canbe members of the same stack. The stack can contain any combination ofswitch models in the PowerConnect 7000 Series and M6348 switches as longas all switches are running the same firmware version.NOTE: PowerConnect M6220 switches can be stacked only with otherPowerConnect M6220 switches. PCM6220 and PCM6348 switches cannot becombined within the same stack.