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Virtual Forwarding Interfaces

Virtual Forwarding InterfaceThe Elfiq Networks Link Balancer is build on an innovative platform named the Elfiq Operating System (EOS) and enables the virtualization of the Link Balancer products. Available on the LB-2500E and above, the Elfiq appliances can be logically segmented into multiple virtual balancers. Each virtual balancer is invisible to the next, creating the opportunity for multiple infrastructures to be managed securely while reducing costs.

The basic role of the virtual forwarder interface is to forward traffic between two or more interfaces while providing a fast packet interception service. A VFI consists of a minimum of 2 physical network interfaces, with at least one of them acting as the inside interface, and the other(s) as the outside interface(s) to handle the different links.

The VFI feature plays a key role in enabling the Global Geolink feature, creating two VFIs to manage traffic, one for the external traffic and one to redirect securely to the other site.

The LB-2500E has two VFIs, the LB-3000 and LB-4000E both come with two VFIs and can support up to 5.