Network Setup
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If you are using a CyberGuard SG appliance model SG560, SG565 or SG580, you may
want to skip ahead to the section entitled Port Based VLANs later in this chapter, for
information on establishing multiple broadband connections.
Once the Internet connections have been configured, specify the conditions under which
the Internet connections are established.
Internet Failover
CyberGuard SG appliances support three connection levels. A connection level consists
of one or more Internet connections. When all primary connections are functioning as
expected, the primary connection level is deemed to be up.
If one or more of the primary connections should fail, the CyberGuard SG appliance
drops back to the secondary connection level. This typically involves bringing up a
secondary Internet connection, until the primary Internet connection or connections
become available again.
You may also optionally configure the tertiary failover level. If one or more of the
secondary connections should fail, the CyberGuard SG appliance drops back to the
tertiary connection level. This is typically a “last resort” dialup link to the Internet, but may
be any kind of network connection. The primary connection level and secondary
connection level are tested in turn, until one becomes available.
Note
Internet failover is not statefu, i.e. any network connections that were established through
the failed primary connection must be re-established through the secondary connection.
Edit connection parameters
The first step of configuring failover is to set failover parameters for each connection.
These parameters specify how to test whether a connection is up and functioning
correctly.
On the Network Setup page, click the Failover & H/A tab. A list of the connections that
you have configured is displayed under the Connection Failover tab, alongside ticks
and crosses. The ticks and crosses indicate how the connection behaves at each
failover level, this is discussed further in the section entitled Modify failover levels
(primary, secondary, tertiary).
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