Alcatel OS6855-24, Руководство пользователя по оборудованию

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Roles Within the Stack Managing OmniSwitch 6855 Series Stacks
page 7-6 OmniSwitch 6855 Series Hardware Users Guide September 2011
Redundant Management Module Failover (Two Switches)
Primary
Secondary
Secondary
Offline
Primary
Offline
Secondary
Primary
!
A stack of two OmniSwitches 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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