• Waiting—A switch is booting up and waiting for communication from other switches in the stack. The
switch has not determined whether or not it is stack master.
Stack members not participating in election remain in the waiting state until the stack master is elected
and ready.
• Initializing—A switch has determined whether it is stack master. If not, the switch receives its system-
and interface-level configuration from the stack master and loads it.
• Ready—The member has completed loading the system- and interface-level configurations and can
forward traffic.
• Master Re-Init—The state immediately after a reelection and a different member is elected the stack
master. The new stack master is reinitializing its configuration. This state applies only to the new stack
master.
• Ver Mismatch—A switch in version mismatch mode. Version-mismatch mode is when a switch that
joins the stack has a different stack protocol minor version number than the stack master.
A typical state transition for a stack member (including stack master) booting up is Waiting > Initializing >
Ready.
A typical state transition for a stack member to stack master after an election is Ready > Master Re-Init >
Ready.
A typical state transition for a stack member in version mismatch (VM) mode is Waiting > Ver Mismatch.
Catalyst 2960-XR Switch Stack Manager Command Reference, Cisco IOS Release 15.0(2)EX1
28 OL-29435-01
Stack Manager Commands
show platform stack manager
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