Acer AB460 F1 User Manual - Page 350

330 4 Networking Switch Modules Stack The Acer switch supports stacking of Acer switch units. Switch stacking is created by connecting switches in a daisy chain. One of the stacked switches is selected as a Master based on its configurations. The Master switch provides management support for the whole stack. Other switches in the stack are referred to as slave switches. Note: Make sure all stacked switches are running the same version of firmware. The Master switch manages the control plane traffic for all stacked switches. When the current master switch fails, the backup master is then selected as the current master. The Master selection algorithm is based on a priority configuration. If two switches have the same priority, the switch with the lowest MAC address is selected as the Master switch. Enabling Stacking By default, Acer switches act as stand-alone switches. This stand-alone default facilitates using 10G Ethernet ports as Extreme Ethernet ports for uplinks. When stacking is enabled the stacking ports are dedicated for stacking purposes. Stacking can be enabled using the command stack with the switch identifier and priority. The detailed command syntax is explained below. Note: When stacking is enabled, the switch needs to be rebooted to make it effective. Note: When a switch is acting as a stand-alone switch with stacking disabled, all physical interfaces are numbered as 0/1 to 0/n. When the switch is in stacking mode, the interfaces are numbered as /1 to / n. In non-stacking mode, the switch ID is considered to be 0.