The Internet Load Balancing Technology and its applications

- Feb 18, 2019 -

The Internet Load Balancing is a clustering technology that ensures enhancement of scalability and availability of critical TCP/IP services. These services could be Web, Virtual Private networking, Terminal and media servers. To take care of scalability of performance, the load balancing actually distributes the IP traffic over the multiple cluster hosts. The availability of the services are taken care of by typically detecting the host failures and redistributing traffic to the already existing hosts.

The important applications of the technology and its users are the Small or the Home office users. Internet Load balancing technology is applicable with reference to the communication channels. It is an ideal application within the broad within the broadband market in particular and fits into situations where there is a need to increase bandwidth to allow VPN (Virtual Private Networks) or the Voice over IP.

The Internet load balancing technology is essential within the networks, making it tough or in fact impossible to predict the number of requests for operational information that would be directed to a server. It is most of the busy websites that employ more than one web server with an adopted load-balancing scheme.

Internet Load balancing – Business Benefits and scope

Internet Connectivity (potential to communicate with another system or with the Internet site) is situated at the nerve centre of any business operation. Organizations depend on them to run the business applications that are critical to the productivity and profits. Internet access is not a luxury any more but very critical to the functioning of the business. Internet load balancing provides an efficient and cost effective and a friendly solution to maximize utilization and the availability of Internet access.

To take care of reliability of Internet access, many organizations lease out two ISP links that connect the internal network to the Internet. Of these, one link is a backup while the primary link is used. This solution enhances reliability by providing a backup capacity of usage during the time of ISP link failures. One other way of keeping the backup link idle is to use Border Gateway Protocol that supports the ability to use the multiple ISP links with multi-homing. Despite the complication and challenges, BGP does not offer any efficient solution. For customers who would like to avoid the challenges of the BGP routing without wasting the idle backup ISP link, link load balancing provides a solution with a valuable return on investment. Internet load balancers balance in-bound and out-bound traffic efficiently amongst all the other ISP links making use of intelligent traffic management.

Links are chosen based on load balancing methods, which are based on critical performance metrics like link weight, bandwidth cost, link weight, bandwidth limit, and ISP pricing methods have a direct impact (positive impact) on the business.

The bandwidth optimization techniques reduce bandwidth costs to a great extent. The owners of high volume web services make use of techniques to save a few bytes per page but at the same time, do not compromise on quality.

Customers do not have to rely on high-cost ISP services any more, low-risk services to provide reliability. They can put bandwidth of multiple links together from different ISPs, which not only reduce the cost but also lead to reliability and availability of access. Utilization of all links simultaneously lead to elimination of failure risk associated with any one link. Otherwise, losing a link results in reduction of available bandwidth but not in loss of availability and performance.

Link load balancers make use of cautious checks to monitor the health and performance of ISP links. They typically move traffic to more healthy and links that perform better. More advanced link load balancers have the trait of a classy health check that is beyond the next hop link and they use end to end close measures as well as service response time to calculate the best link to service any given application transaction.

Network and application security is the need of the hour for businesses and organizations. Link load balancers are sited at the point of intersection of the internal and external network to provide this security. Making use of source Network Address Translation compels the return traffic to make use of the same ISP link as a foreword traffic to attain persistence and consistent performance. NAT provides security by permitting some link load balancers to use their layer 4-7 network and application intelligence to prevent Denial of Service. This is done by blocking traffic from hateful clients at the same time not effecting performance for legitimate customers.

Products supporting high-availability (HA) configuration offer a fault-tolerant solution. This solution is very apt for an organization’s critical business needs. In the HA mode, two link load balancers function as a Active and Standby with a session synchronization and a sub-second failover. When one device fails, there is no effect on the existing connections as the other device is operations that are aware of the existing connections and continues with servicing application traffic.

However, the question arises as “what would happen if the Internet itself fails”? Companies have begun to think of this question and consider options in the form of a mixture of wire line and wireless ISPs as well.


Meizo Networks 4G Dual SIM Router ensures that a backup 3G/4G network can take over should the primary network fail. The router detects a network problem and fails over to a standby SIM/APN, ensuring the customer’s SLAs are upheld. 

4g dual sim router

To learn more about our Industrial 4G Dual SIM Router, please refer to:

https://www.meizonetworks.com/m2m-router-gateway/dual-sim-4g-router/4g-dual-sim-router.html