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Increase WAN Network Reliability

Just as RAID added significantly to the reliability of storage systems while using inexpensive, "lower quality" hard disks than prior storage systems, WAN Virtualization similarly delivers increased WAN reliability and application performance predictability over single-provider WANs, even as it enables lowers monthly WAN costs and provides greater bandwidth.

Most obviously, rather than depending on an SLA from a service provider – where, after all, if the SP is in non-compliance, you simply get a 10% credit on the monthly bill (not what you actually care about in such a situation!) – The ability of Talari’s Adaptive Private Networking (APN) WAN Virtualization technology to use multiple active, load-sharing connections between locations provides uptime and predictable performance. With sub-second response to failure, packet loss or other congestion events, no single WAN link failure, nor any other single problem in the network, can cause a loss of connectivity.

Diagram: Use APN appliances to increase reliability of WAN networks

Even for those willing to “pay through the nose” for dual MPLS networks from different providers, APN provides a level of network reliability and application performance predictability over the WAN unavailable using standard routed networks and routing protocols. With APN’s Multipath Network Spectrometry continuously measuring the state of all network paths, you avoid the possibility that your backup connection – probably rarely used – itself has a problem, or is misconfigured, just when you need it most: when trouble does occur on your primary network.

With APN, you can eliminate an expensive redundant MPLS network – substituting inexpensive Internet connections and APN’s Resilient Multipath Connectivity for that second MPLS network – and have more reliability and application predictability, more usable bandwidth, and a lower monthly WAN bill at the same time.

In addition to reacting more quickly (sub-second) to hard network or device failures, where routing protocols can sometimes require up to 30 seconds to react, APN also protects you from the performance problems that can occur dues to loss or congestion on the WAN. And while it is true that these “network brownouts” rarely occur on in the core of over-engineered North American MPLS networks, they do occur with at least some frequency in international MPLS networks, especially in the Asia-Pacific region.

In fact, given that APN's fundamental design is to adapt in the face of WAN connectivity problems, an Adaptive Private Networking solution from Talari Networks actually makes your WAN incredibly fault-tolerant, even to problems caused by a faulty software upgrade or misconfigured router on your own network.