Link Balancing

For seamless and transparent integration.


Networks have become more complex as user habits and expectations change. New applications operating in real-time like unified communications (UC) and video streaming are competing for scarce network resources. Leverage simultaneous ISPs to benefit from seamless failover, increased throughput, link aggregation and smarter path selection for enhanced network performance and maximum uptime.

Martello’s Elfiq Link Balancers are Layer-2 devices and 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, and can be deployed via Zero-Touch Provisioning.

These devices unlock features such as:

    Should an ISP link become unavailable, one or more links will handle the traffic until the troubled link returns to normal.
    The link balancer will be able to distribute traffic leaving the organization across available links based on organizational preferences.
    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.
    Through Martello’s inspection tools, our link balancing devices can steer traffic across multiple ISPs based on UC relevant metrics such as jitter, packet loss, and RTT, and calculate MOS Scores on available paths to maximize Voice Quality at all times.

How do Elfiq Link Balancers Work?

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.

Complimentary 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.

Active-Active Deployments

The 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.

Benefits of Elfiq Link Balancing Solutions

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


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.

"The Elfiq appliance is very important to raise the level of availability of the main bank's systems that are accessed by our customers on the Internet. Since we installed it, we have attained network availability of nearly 100%."
– Banco Daycoval
Banco Daycoval
Cloud Connectors

Cloud Connectors

Link Balancing Failover Solutions

Link Balancing Failover Solutions

Contact our technical support team for assistance building the optimal WAN solution

Contact our technical support team for assistance building the optimal WAN solution

Check out our LBX and VLBX products

Check out our LBX and VLBX products

With so many competing bandwidth-hungry services,
how can you ensure that your network will be up to the task?