Dell PowerEdge 4200 Series, Administrator'S Manual, Page: 232 / 440

232 | SRA 6.0 Administrator’s Guide
Step 9
Repeat Step 1 through Step 7 on the backup unit.
When you click the Accept button, the backup device will become IDLE and you will no longer
be able to access it with its IP address. The primary device is now Active with the same settings
it had before the HA configuration.
The appliances in the HA Pair immediately begin to synchronize data from the primary to the
backup unit. When failover occurs and the primary is down, the backup unit will become Active
with the same settings as the primary.
Enabling Interface Monitoring
In the Interface Monitoring section of the page, you can enable monitoring of the working
interfaces to which VPN users connect.
The monitored interfaces available for selection are X0, X1, and X2. When Interface Monitoring
is enabled and configured, if any of the monitored interfaces loses connectivity on the active
unit and is still reachable on the idle unit, failover occurs.
To enable interface monitoring:
Step 1
On the High Availability > Settings page under Interface Monitoring, select the Enable
Interface Monitor check box.
Step 2
In the Monitor Interfaces list, select the interfaces that you want to monitor.
Step 3
Click Accept .
Configuring Network Monitoring Addresses
In the Network Monitoring Address section, you can configure monitoring of the LAN and WAN
IP addresses. When Network Monitoring is configured, if the LAN or WAN connection is lost on
the active unit, but is reachable on the idle unit, failover occurs.