Dell Force10 MXL Blade - Splitting a Stack; Managing Redundant Stack Management

Stacking | 559
• 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.
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.
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.
Task Command Syntax Command Mode
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
EXEC Privilege
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
CONFIGURATION
Display redundancy information.
show redundancy
EXEC Privilege