1-11 StackThe S3100 series switches can be stacked only when stack modules are installed.Stack Function OverviewA stack is a management domain formed by a group of Ethernet switches interconnected through theirstack ports. A stack contains a main switch and multiple slave switches.Logically, you can consider a stack a single device and manage all the switches in a stack through themain switch.The Main Switch of a StackYou can configure multiple Ethernet switches interconnected through their stack ports to form a stack byperforming configurations on one of the switches. In this case, the switch becomes the main switch ofthe stack.You can perform the following operations on a main switch:z Configuring an IP address pool for the stackz Creating the stackz Switching to slave switch viewBefore creating a stack, you need to configure an IP address pool for the stack on the main switch.When adding a switch to a stack, the main switch picks an IP address from the IP address pool andassigns the IP address to it automatically.After a stack is created, the main switch automatically adds the switches that connected to its stackports to the stack. If a stack port connection is disconnected, the corresponding slave switch quits thestack automatically.The Slave Switches of a StackAll the switches in a stack except the main switch are slave switches.You can configure a slave switch in a stack on the main switch.Creating a StackThe following are the phases undergone when a stack is created.