Specifications

Chapter 3 Configuration Instructions Installation and Operation Manual
3-26 Utilities Menu DXC-100PSX
The Switchover Command
The DSMC.2 controls the NDR and determines that a switchover is necessary. The
DSMC.2 directs the switchover to the redundant device in the Redundancy Group.
Once the switchover occurs, the ports lose traffic. While the redundant device is
in use, no other primary device failures can be switched. The primary device’s
configuration is copied to the redundant device. The primary device’s
configuration is preserved.
Manual Switchover
A switchover can be executed if the operator wants to take the primary card
offline for maintenance purposes.
The Switchover command, performed by the
Administrator , Provisioning or Test
level user (refer to the System Configuration chapter for a description of user
levels), forces the primary device to switchover and go
offline .
To perform a manual switchover, go to the
Nest Summary Menu , place your
cursor on the primary device slot, and press “O”. A switchover done in this
manner is referred to as a
manual switchover . The next two screens are
representative of a succession of screens that show a switchover in progress and
a successful switchover. Press X to return to the previous menu.
Switchover command state
Nest 1 Primary Slot 10 Secondary Slot 11
Switchover: Secondary card arming in progress
.
Figure 3-28. Switchover in Progress
Switchover command state
Nest 1 Primary Slot 10 Secondary Slot 11
Switchover: Successful
Figure 3-29. Switchover Successful
Automatic Switchover
To enable the automatic switchover function, you must go to the Slot
Configuration Menu and set the N+1 Device Redundancy Switchover command to
automatic . In this case, a switchover will occur automatically, without user
intervention.
A switchover occurs when a primary device in an Redundancy Group has failed
and met one or more of the error conditions described in
1 Table 3-6 .