Lantronix G520 G520 User Guide - Page 182

11: Network Load Balancing Network > Load Balancing Load balancing is a mechanism that enables balancing traffic between various links. It distributes traffic among various links, optimizing utilization of all the links to accelerate performance and reduce operating costs. Interfaces are assigned a priority by means of a metric. How it works Load balancing is determined by the load metric, in other words, the weight. Each link is assigned a relative weight and the gateway distributes traffic across links in proportion to the ratio of weights assigned to each individual link. This weight determines how much traffic will pass through a particular link relative to the other links. Weights can be selected based on:  Link capacity (for links with different bandwidth)  Link/Bandwidth cost (for links with varying cost) Note: The default configuration of the load balancer is in Failover Mode with the highest priority given to WAN, then WWAN and then Cellular. MWAN Concept On G520 series gateways, one or more sources of Internet can be used at the same time. In failover mode, the gateway uses one source of Internet and fails over to another according to defined priorities. Once the source with a higher priority is online, the same will be used as a primary source of Internet. Priority can be defined by setting the metric. The lower the metric, the higher the priority. The decision of when to failover or rollback is dependent on which interfaces are online and which ones are offline. Online and offline interface status is based on the PING responses to a particular server at a particular time interval. You can speed up the failover by sending PING packets in a shorter interval and you can add reliability by adding multiple server candidates. Load balancing is where two or more sources of Internet are used at the same time and the load is split between the multiple interfaces in the ratio of their assigned weights. The gateway supports a feature called WAN affinity whereby a particular source IP, Destination IP or a data type can be bound to a particular interface. To accomplish this, you need to create members which correspond to physical interfaces, assign the members in a particular policy, create rules and assign a policy to the rules. In summary:  Members correspond to physical interfaces with an assigned metric and weight  Policy consists of a member or group of members  Rules specify which traffic will use a particular policy Globals Network > Load Balancing > Globals To configure MWAN global settings: 1. Go to Network > Load Balancing > Globals. G520 Series IoT Cellular Gateway User Guide 182