Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 556

www.dell.com | support.dell.com Step 3 4 5 6 Task Command Syntax Configure a 40GbE port for stacking mode, where: stack-unit is the unit-number of the member stack unit. Valid values: 0 to 5. Default value: 0. stack-group group-number is the number of stacked port on unit. Valid values: 0 to 1 (Figure 31-5). stack-unit unit-number stack-group group-number Save the stacking configuration on the 40GbE ports. write memory Repeat Steps 1 to 4 on each MXL 10/40GbE Switch in the stack. Log on to the CLI and reboot each switch, one after another, in as short a time as possible. reload Command Mode CONFIGURATION EXEC PRIVILEGE EXEC PRIVILEGE Note: If the stacked switches all reboot at approximately the same time, the switch with the highest MAC address is automatically elected as the master switch. The switch with the next highest MAC address is elected as standby. As each switch joins the stack, it is assigned the lowest available stack-unit number from 0 to 5. The default configuration of each stacked switch is stored in the running configuration of the stack. The stack-unit ID numbers are retained after future stack reloads. To verify the stack-unit number assigned to each switch in the stack, use the show system brief command (Figure 31-8). To configure stacked switches so that stacking roles are determined by preset priorities, use the stack-unit priority command (refer to Assigning a Priority to Stacked Switches). Assigning a Priority to Stacked Switches To configure the stack so that the roles are assigned according to pre-determined priorities instead of using the highest MAC addresses, use the stack-unit priority command in Global Configuration mode on each stacked switch. The switch with the highest priority number is elected master. The switch with the next highest priority number is elected standby and takes over stack management if the master switch fails. Task Configure the priority of stacked switches to determine stack mastership, where stack-unit unit-number identifies the switch in the stack. priority priority-number specifies the management priority. Range: 1-14. Default: 0. Command Syntax Command Mode stack-unit unit-number priority CONFIGURATION number To revert the management priority of a stack unit to the default value of 0, use the no form of the stack-unit unit-number priority number command. After you reconfigure the priorities of stacked switches, reload the stack so that a new master and standby election is performed. 554 | Stacking