Cisco WS-CE500 - Page 58

Networking
Configuring the Optional WAN
Cisco SA500 Series Security Appliances Administration Guide 58
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Figure 2 Example of Dual WAN Ports with Load Balancing
NOTE When configuring load balancing, make sure that you configure both
WAN ports with the Connectivity Type set to Keep Connection. If the WAN
is configured to time out after a specified period of inactivity, then load
balancing is not applicable.
• Failure Detection: Enable this feature to allow the security appliance to
detect the failure of a WAN link. You can specify the detection method. In
the event of a failure, traffic for the unavailable link is diverted to the
available link.
NOTE Before you perform this procedure, you must configure the optional
WAN connection. See Configuring the Optional WAN, page 54.
STEP 1 Click Networking > Optional Port > WAN Mode, or from the Getting Started
(Advanced) page, under Secondary WAN Port, click Configure WAN Mode.
The WAN Mode window opens.
STEP 2 In the Port Mode area, choose one of the following modes:
• Auto-Rollover with Primary port as: Choose this option If you have two ISP
links and you want to use one link as a backup. From the drop-down list,
choose the WAN port that you want to designate as the primary link:
Dedicated WAN or Optional WAN.
When Auto Failover mode is enabled, the link status of the primary WAN port
is checked at regular intervals as defined by the failure detection settings.
• Load Balancing: Choose this option if you have two ISP links that you want
to use simultaneously. After you complete this procedure by clicking the
Apply button, you need to configure the protocol bindings. See Configuring
the Protocol Bindings for Load Balancing, page 60.
SA 500
yourcompany2.dyndns.org
yourcompany1.dyndns.org
Internet
Dual WAN Ports (Load Balancing)
WAN2 IP
WAN1 IP
197402