Changing the Secondary Module to Primary
Managing OmniSwitch 6850/6850E Series Stacks
page 6-38
OmniSwitch 6850/6850E Series Hardware Users Guide
June 2011
If there are only two switches in the stack, the former primary switch resumes the secondary role when it
comes back up following the takeover.
Takeover Behavior In a Stack of Two
In this stack of two switches, the slot 1 switch is the primary man-
agement module. The slot 2 switch is the secondary.
A takeover is initiated by the user; the primary management
module is automatically reloaded. Any data flow on the primary
switch’s Ethernet is interrupted.
The secondary switch takes over the primary role. Ethernet traffic
on slot 2 remains unaffected. Meanwhile the stack has no interim
secondary management module as the switch reboots.
1
2
3
-> takeover
Primary - Slot 1
Secondary - Slot 2
When the former primary switch comes back up, it assumes the
secondary management role within the stack.
4
Booting...
Primary - Slot 2
Secondary - Slot 1
Primary - Slot 2
