Managing OmniSwitch 6850/6850E Series Stacks
Roles Within the Stack
OmniSwitch 6850/6850E Series Hardware Users Guide
June 2011
page 6-7
Redundant Management Module Failover (Two Switches)
Primary
Secondary
Secondary
Offline
Primary
Offline
Secondary
Primary
!
A stack of two switches is operating normally. The
stack consists of a primary module and a secondary
module. (The software on both elements in the stack is
synchronized.)
The primary management module fails or is taken
offline (e.g., powered off or rebooted by the user).
The switch operating as the secondary management module
immediately takes over the primary role. It is at this point
essentially operating as a stand-alone switch.
If the switch that previously failed or was taken offline
comes back online, it will assume the secondary role in the
stack.
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2
3
4
