Hybrid (Virtual) WAN

Hybrid WANs are becoming very popular, because they offer deployment flexibility, lower costs, service provider flexibility, network reliability and bandwidth resiliency. A hybrid WAN is composed of MPLS, and one or more broadband links. Typically, the MPLS circuit, with its inherent reliability and QoS, will carry enterprise WAN traffic, and the public broadband link(s) will be used for cloud and Internet traffic, and as a failover for MPLS. But, this configuration has some downsides, including inefficient use of bandwidth and session drop on failover.

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Talari SD-WAN advantages

With Talari, all links are active. This means, all WAN locations have access to the full aggregated amount of bandwidth, at all times. This eliminates the need to over-provision expensive MPLS bandwidth to accommodate traffic spikes, and eliminates unused bandwidth in place only as a back-up failover link. Policies can be put in place to have real-time quality sensitive applications, such as VoIP, get highest priority and be transmitted over links with the lowest packet loss and latency – whether MPLS or broadband. This ensures the applications run over the best possible link, with the highest quality. At the same time, applications that are less latency sensitive, such as intranet traffic and bulk file transfers, can use the aggregated link capacity of all available circuits, including the MPLS link, and the broadband links, delivering the maximum possible capacity.

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