Balance Low Cost And High Performance

Current wide-area network (WAN) services like multi-protocol label switching (MPLS) and metro Ethernet are expensive and difficult to configure and change. Software-defined WAN (SD-WAN) allows connectivity over the public Internet instead of dedicated links and load balances across multiple MPLS, LTE, or broadband services. Validation is key to ensure new SDN-WAN services meet expectations of cost savings in network operation, faster deployment, efficient load balancing, and increased performance.

Latency Testing Is Critical To Hybrid Wan

In a hybrid network infrastructure, an SD-WAN solution needs to dynamically steer application traffic over MPLS or Internet links—on a per‐packet basis, to ensure enterprise-grade performance and availability. Measuring the latency of this WAN traffic is critical to ensuring high performance. But accurate latency measurement needs an accurate and synchronized clock.

To solve this problem, use our Metronome Timing System to time-synchronize the source port of IxNetwork and the receiving port of IxNetwork. Metronome relies on GPS time input to enable two geographically separated Metronome devices to provide the same time input to our hardware. IxNetwork and the Metronome Timing System is the perfect combination for SD-WAN validation engineers.

Manage SD-WAN Routing Complexities

The routing capability in the SD-WAN gateway allows SD-WAN to operate in overlay mode. There can be a router on the edge, and the SD-WAN appliance is on the LAN side of that router. Or in some cases this can be an integrated device with routing intelligence. The SD-WAN gateway needs to incorporate routing intelligence in the overlay network for site-to-site communication to happen over MPLS tunnels or broadband connections. The customer site end-point information also needs to pass through the overlay network for the hosts to communicate. Ensuring routing functionality in this type of environment requires a test system like IxNetwork that can validate from multiple dimensions:
  1. OSPF or BGP session establishment over the WAN
  2. Real-time route learning from the network through OSPF or BGP
  3. Advertise routes over the WAN for any changes in the LAN side
  4. Selective route filtering

Connect with a Security Specialist to learn more about how our Security Fabric can transform your security infrastructure.