The result is that businesses can use the paths for VPNs with faster response times and that are less susceptible to crashing because a link goes down.

If a physical link fails, the devices redirect packets to an alternate route. They can do so without having to renegotiate VPN tunnels that happen to be traveling over the paths, the company says.

Elfiq devices are deployed in pairs and attach to however many WAN links connect to the site where they are located. They are typically located between firewalls and WAN routers.

If each site has two Internet connections, the devices can create four paths; two from each ISP link at the first site connecting to each ISP link at the second site.

Previously, the device had to pick one path at a time to send traffic along, but now the devices can multiplex traffic by splitting it up and sending it along multiple paths. This increases the net bandwidth and so the throughput between sites.