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CDRouter-Multiport can also be used to test devices with multiple WAN interfaces. Most dual-WAN routers support two modes of operation; a load-balancing mode and a backup/failover mode. In load-balancing mode both WAN interfaces are typically active and the router will uses any number of different algorithms to share the total load across both interfaces. In failover mode only one of the two WAN interfaces is typically active at any given point in time. The second interface is only enabled if the first loses connectivity.

CDRouter-Multiport can be used to test dual-WAN routers in both modes of operation, with a few caveats. For more information, please see the CDRouter User's Guide.

Test Setup

Requirements

• CDRouter-Multiport
• Three network interfaces
• One router with two or more WAN interfaces

Benefits

• Simple setup for testing routers with multiple WAN interfaces
• Can be used to test devices that are operating in both load-balancing mode or failover mode
• A number of additional test modules are included with CDRouter-Multiport that verify specific dual-WAN behavior, including:
  • NAT
  • RIP
  • forwarding
  • WAN failover