
148 C
HAPTER
10: C
ONFIGURING
H
IGH
A
VAILABILITY
Figure 62 Log Screen Showing Switchover of Firewall
Forcing Transitions
In some cases, it may be necessary to force a transition from one active
Firewall to another – for example, to force the primary Firewall to become
active again after a failure when Preempt Mode has not been enabled, or
to force the backup Firewall to become active in order to do preventative
maintenance on the primary Firewall.
To force such a transition, it is necessary to interrupt the heartbeat from
the currently active Firewall. This may be accomplished by disconnecting
the active Firewall’s LAN port, by shutting off power on the currently
active unit, or by restarting it from the Web interface. In all of these cases,
heartbeats from the active Firewall will be interrupted, which will force
the currently Idle unit to become Active.
To restart the active Firewall:
1
LogintotheprimaryFirewall’s LAN IP Address.
2
Click the Tools button on the left side of the browser window.
3
Click the Restart tab at the top of the window.
4
Click the Restart SuperStack 3 Firewall button, then the Yes button to
confirm the restart.
Once the active Firewall restarts, the other Firewall in the High Availability
pair will take over operation.
DUA1611-0AAA02.book Page 148 Thursday, August 2, 2001 4:01 PM
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