Dell PowerEdge FX2 Dell PowerEdge FN I/O Aggregator Configuration Guide 9.6(0 - Page 191
Adding a Stack Unit
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Repeat the above steps on each Aggregator in the stack by entering the stackunit 0 iom-mode stack command and saving the configuration. If the stacked switches all reboot at approximately the same time, the Aggregator with the highest MAC address is automatically elected as the master switch. The Aggregator with the next highest MAC address is elected as the standby master. NOTE: You can ensure that a stacked switch becomes the master by rebooting the switch first, and waiting for it to come up before rebooting the second switch in the stack. It is recommended to have the boot image for the stack units via boot from flash. The Status LED on the Aggregator that is elected as the master switch is blue. Perform VLAN and other software configuration for the stack by connecting to the console port on the master unit. To determine which switch is the stack master, enter the show system command at the terminal. To remove an Aggregator from the stack, enter the stack-unit 0 iom-mode standalone command in Global configuration mode, save the configuration and reload the Aggregator for the change to take effect. In stack mode, all VLAN membership are removed and the port is assigned only to the default VLAN1. You must configure additional VLAN membership, as required. Adding a Stack Unit You can add a new unit to an existing stack both when the unit has no stacking ports (stack groups) configured and when the unit already has stacking ports configured. If the units to be added to the stack have been previously used, they are assigned the smallest available unit ID in the stack. To add a standalone Aggregator to a stack, follow these steps: 1. Power on the switch. 2. Attach SFP+ or direct attach cables to connect 10G ports on the switch to one or more switches in the stack. 3. Log on to the CLI and enter global configuration mode. Login: username Password: ***** Dell> enable Dell# configure 4. Configure the Aggregator to operate in stacking mode. CONFIGURATION mode stack-unit 0 iom-mode stack 5. Reload the switch. Dell Operating System automatically assigns a number to the new unit and adds it as member switch in the stack. The new unit synchronizes its running and startup configurations with the stack. EXEC Privilege mode reload Stacking 191