Eicon Networks SHIVA 1100, Administrator'S Manual, Page: 30 / 136

Internet failover
30 System Administrator’s Guide
Internet failover
Shiva VPN Gateways are designed with the real Internet in mind, which may mean
downtime due to ISP equipment or telecommunications network failure. Failures can
be caused by removing the wrong plug from the wall, typing in the wrong ISP
password or many other reasons. Regardless of the cause of a failure, it can
potentially be very expensive.
When the main Internet connection fails and the backup connection (failover
connection) is started, VPN connections are restarted and dynamic DNS services are
advised of the new IP address.
To utilize the failover capabilities of your Shiva VPN Gateway, you must:
• Enable your primary Internet connection for failover.
• Set up a secondary backup Internet connection.
Enable the primary connection for failover
Set up your primary broadband Internet connection as described in the Internet
section of this chapter. From the
Connections menu, select Edit failover
parameters from the Configuration pull down box.
The Shiva VPN Gateway determines whether an Internet connection is up by listening
for responses to ping (ICMP echo request) packets sent to a host on the Internet.
Ensure you choose a host on the Internet that can be contacted reliably and responds
to pings. You can check whether you can ping a host under
Diagnostics > Network
Tests > Ping Test .
• IP Address of Remote Machine: Enter the IP address of the host.
• IP Address for the Source: Select the port the ping will be sent on.