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Admin Guide (Standalone)

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SD-WAN

FortiExtender supports Software-Defined Wide Area Network (SD-WAN) to provide link load-balancing (LLB) among different links. It provides the following features:

  • Virtual interface in system for routing system and firewall.
  • Adding targets as members and balancing traffic among them.
  • Link Load-balancing (LLB) for WAN interfaces or VPN tunnels.
  • LTE interface as members of SD-WAN, or combined with a physical interface as members of SD-WAN.
  • Support for multiple LLB algorithms:
    • Redundant
    • Weighted Round Robin (WRR)
  • Redundant algorithm using a SD-WAN member for data transmission based on:
    • Priority
    • Cost
  • Two LTE interfaces as members of SD-WAN redundant by cost algorithm:
    • The lowest cost target works as primary. When primary fails, the next lowest cost target will take over the primary role (fail-over).
    • When a dead primary comes back to life, it will retake the primary role (fail-back).
    • The cost of LTE interface is calculated based on the capacity and monthly-fee of the LTE plan.
  • When the LTE and physical interface(s) are members of SD-WAN redundant by cost algorithm:
    • The physical interface must always be selected as lowest cost target and works as the primary.

This section covers the following topics:

SD-WAN

FortiExtender supports Software-Defined Wide Area Network (SD-WAN) to provide link load-balancing (LLB) among different links. It provides the following features:

  • Virtual interface in system for routing system and firewall.
  • Adding targets as members and balancing traffic among them.
  • Link Load-balancing (LLB) for WAN interfaces or VPN tunnels.
  • LTE interface as members of SD-WAN, or combined with a physical interface as members of SD-WAN.
  • Support for multiple LLB algorithms:
    • Redundant
    • Weighted Round Robin (WRR)
  • Redundant algorithm using a SD-WAN member for data transmission based on:
    • Priority
    • Cost
  • Two LTE interfaces as members of SD-WAN redundant by cost algorithm:
    • The lowest cost target works as primary. When primary fails, the next lowest cost target will take over the primary role (fail-over).
    • When a dead primary comes back to life, it will retake the primary role (fail-back).
    • The cost of LTE interface is calculated based on the capacity and monthly-fee of the LTE plan.
  • When the LTE and physical interface(s) are members of SD-WAN redundant by cost algorithm:
    • The physical interface must always be selected as lowest cost target and works as the primary.

This section covers the following topics: