CommandCenter Secure Gateway - Admin Guide - Version ... - Raritan

Chapter 15: Advanced Administration
What is Primary/Backup mode?
Primary/Backup mode enables you to use two CC-SG LAN ports to
implement network failover and redundancy. In this mode, only one LAN
port is active at a time.
Important: It is highly recommended that you should use the
Primary/Backup mode for new deployments.
See About CC-SG LAN Ports (on page 182) for the locations of the
Primary LAN and Secondary LAN ports on each CC-SG model.
If the Primary LAN is connected and receiving a Link Integrity signal,
CC-SG uses this LAN port for all communications. If the Primary LAN
loses Link Integrity, and Secondary LAN is connected, CC-SG will failover
its assigned IP address to the Secondary LAN. The Secondary LAN will be
used until the Primary LAN returns to service. When the Primary LAN is
back in service, CC-SG automatically reverts to using the Primary LAN.
As long as one LAN connection is viable, a client should not notice any
disruption in service during a failure.
Setup for Primary/Backup mode:
When implementing Primary/Backup mode for your CC-SG network:
• Both CC-SG LAN ports must be attached to the same LAN
sub-network.
• You can attach each LAN port to a different switch or hub on the same
subnetwork for reliability. Optional.
To configure Primary/Backup mode in CC-SG:
1. Choose Administration > Configuration.
2. Click the Network Setup tab.
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