Dell PowerConnect B-FCXs Configuration Manual page 221

Figure 20
comes back up. The stack in this example has user-configured priorities.
FIGURE 20
Active 1 (pri=200)
Standby 2 (pri=100)
Active 2 (pri=100)
Member 1 (pri=200)
Active 2 (pri=100)
Standby 1 (pri=200)
Active 2 (pri=100)
Active 1 (pri=200)
Standby 2 (pri=100)
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
illustrates a hitless stacking switchover when the Active Controller goes down then
Hitless stacking switchover when the Active Controller comes back up
Active controller comes back (in a
stack with user-assigned priorities)
1
Member 3 (pri=0)
Member 4 (pri=0)
1
Standby 3 (pri=0)
Member 4 (pri=0)
Unit 1 (priority 200) reloads because
it loses the election. After the reload,
1
It joins the stack as a member.
Standby 3 (pri=0)
Member 4 (pri=0)
30 sec.
The Active controller assigns Unit 1
(priority 200) as the Standby controller.
1
Stages 1 and 2 are complete.
Member 3 (pri=0)
Member 4 (pri=0)
70 sec.
A switchover occurs. Unit 1
becomes the Active controller.
1
Member 3 (pri=0)
Member 4 (pri=0)
PowerConnect B-Series FCX hitless stacking
.
The Active controller fails
Active (Unit 1 with priority 200)
comes back up
5
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