Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 561
Splitting a Stack, Managing Redundant Stack Management
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• If there is no unit numbering conflict, the stack members retain their previous unit numbers. Otherwise, the stack master assigns new unit numbers, based on the order in which they come online. • The new stack master uses its own startup and running configurations to synchronize the configurations on the new stack members. Note: Adding a new unit that is powered on and has stack groups configured is the same as merging two stacks (refer to Adding a Stack Unit). If the new unit has been configured with a higher priority than the current stack master, it becomes the new stack master and the stack reloads. If the new unit does not have a higher priority than the master switch, it is added as a member switch. Splitting a Stack To split an MXL 10/40GbE Switch stack, unplug the stacking cables between member units at any time: while the stack is powered on or off and when the units are online or offline. Each portion of the split stack retains the startup and running configuration of the original stack. For a stack that is split into two smaller stacks, each with multiple units: • If one of the new stacks receives the master and standby units, it is unaffected by the split. • If one of the new stacks receives only the master unit, the master switch retains its role and a new standby is elected. • If one of the new stacks receives only the standby unit, it becomes the master in the new stack and FTOS elects a new standby. • If one of the new stacks receives neither the master nor the standby unit, the stack is reset so that a new election takes place. Managing Redundant Stack Management To manage the redundancy behavior in a stack, use the following redundancy commands. Task Command Syntax Reset the current stack master and make the standby unit the new master. A new standby is elected. When the previous stack master comes back online, it becomes a member unit. redundancy force-failover stack-unit Prevent the stack master from rebooting after a failover. This command does not affect a forced failover, manual reset, or a stack-link disconnect. redundancy disable-auto-reboot stack-unit Display redundancy information. show redundancy Command Mode EXEC Privilege CONFIGURATION EXEC Privilege Stacking | 559
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