Elfiq Networks Link Balancers are Layer-2 devices are typically deployed outside of the firewall for a seamless and transparent integration (bump-in-the-wire). The company’s link balancing solutions include the innovative LBX and VLBX families. All Elfiq Link Balancers are designed to proactively manage bandwidth from multiple ISP or private links, in an active-active configuration.

Such devices unlock features such as:

  • Active-Active Deployment: should an ISP link become unavailable, one or more links will handle the traffic until the troubled link returns to normal.
  • Outbound traffic balancing: the link balancer will be able to distribute traffic leaving the organization across available links based on organizational preferences
  • Inbound traffic balancing: through DNS (Domain Name Service) interception, a link balancer will be able to distribute incoming traffic across all selected links. Common examples include roaming VPN clients, webmail access, transactional applications and email retrieval by remote users.



LBX and VLBX devices allow the use of many routed links simultaneously and support any kind of routed link or speed. Their deployment requires no change to standard router configurations. Elfiq Link Balancers allow balancing for both incoming and outgoing traffic, usually on a per session basis (source IP, destination IP, source port, destination port and protocol).


Multiple balancing rules are configured with different algorithms and link selection so the network administrator can have control over network link selection and usage (traffic segmentation).  The best link for a given task is identified, and the traffic is directed accordingly, optimizing the available bandwidth and creating a smarter network.


Complementary services include Quality of Service (QoS) for traffic allocation, Site-to-Site resiliency and link bonding, geographic load balancing, the possibility to enable or disable balancing rules depending on specific conditions or status and the verification of available traffic destinations.

Internet has become critical for most organizations to conduct daily activities. Losing Internet or network access is unacceptable for any period of time. Elfiq Link Balancers are a key tool in preventing such disruptions, ensuring that connectivity is maintained even when an ISP is unavailable. As long as one ISP link is up and running, traffic will continue to flow.

LBX and VLBX devices offer significant benefits to any organization depending on Internet or network connectivity to conduct normal operations. Key benefits include:

  • Business continuity: the use of multiple ISP links enables maximum uptime for connectivity, therefore ensuring the organization is able to conduct online activities normally even if one or more ISPs are not available, as long as one remains. This minimizes the risks of losing sales during outages. Key services such as web surfing, VPN access and voice traffic will remain available and ensure normal operations.
  • Productivity improvement: aggregating multiple links onto the same Link Balancer gives the organization the benefit of increased throughput for both upload and download activities.
  • Cost reduction: by preventing downtime, productivity is maintained and employees operate normally even during link failures and outages. The same can be said of servers and services, ensuring all transactions are able to be completed.
  • Lower helpdesk calls: when Internet access is functioning normally, even when one or more ISPs are not available, users will not contact the helpdesk for assistance and will most likely not try to troubleshoot their equipment themselves.