SonicWALL Internet Appliance Security Guide Page 163
Forcing Transitions
In some cases, it may be necessary to force a transition from one active SonicWALL to
another – for example, to force the primary SonicWALL to become active again after a
failure when
Preempt Mode
has not been enabled, or to force the backup SonicWALL
to become active in order to do preventative maintenance on the primary SonicWALL.
To force such a transition, it is necessary to interrupt the heartbeat from the currently
active SonicWALL. This may be accomplished by disconnecting the active SonicWALL’s
LAN port, by shutting off power on the currently active unit, or by restarting it from the
Web Management Interface. In all of these cases, heartbeats from the active
SonicWALL are interrupted, which forces the currently
Idle
unit to become
Active
.
To restart the active SonicWALL, log into the primary SonicWALL LAN IP Address and
click
Tools
on the left side of the browser window and then click
Restart
at the top
of the window.
Click
Restart SonicWALL
, then
Yes
to confirm the restart. Once the active
SonicWALL restarts, the other SonicWALL in the High Availability pair takes over
operation.
Note
: If the
Preempt Mode
checkbox has been checked for the primary SonicWALL,
the primary unit takes over operation from the backup unit after the restart is
complete.
integrated_manual.book Page 163 Wednesday, June 13, 2001 6:21 PM
