![]() ![]() This made sense when applications resided in the private datacenters and were accessed from branch offices across narrow, expensive MPLS circuits. SD-WAN: The WAN accelerators for the modern digital enterprise?Īs we can see, in the past WAN acceleration was heavily focused on reducing bandwidth consumption between sites. Generally, WAN acceleration appliances were deployed at locations across a WAN to achieve WAN optimization objectives. Packet loss correction techniques, such as packet duplication, for overcoming packet loss particularly in the last mile.While protocol acceleration improves the operation of the underlying network and specifically the TCP-layer, application-specific optimizations address the chattiness of application-layer protocols. Application-specific acceleration techniques boost the efficiency of applications.Local flow control, selective acknowledgment, and window scaling are techniques that help enhance TCP connections. Protocol acceleration techniques improve protocol operation across the network, particularly in terms of reducing the latency introduced by inefficient protocol operation.Caching stores frequently accessed data locally, eliminating the need to retransmit the data across the network. Caching is another technique focused on reducing bandwidth usage. ![]() Its goal, like compression, is to maximize the available bandwidth. Deduplication is similar to compression but operates on larger amounts of data, typically at the block level.Compression, in the context of WAN acceleration, typically operates at the byte-level and works in a similar fashion to file compression but applies to data in transit. Compression that reduces the amount of data sent across the network.There are a variety of different techniques that different WAN accelerators, also known as WAN Optimization Controllers (WOCs) use, and these include: Simply put, a WAN accelerator is any hardware or software appliance that provides bandwidth optimization across a WAN. So, what exactly are WAN accelerators and what is WAN acceleration in 2020? Here, we’ll answer those questions. While WAN optimization and acceleration are still important, increased bandwidth availability, cloud, and mobile have significantly shifted the paradigm. However, when I discuss latency reduction and WAN acceleration with network managers and CIOs, one of the key takeaways is that getting network optimization right has changed significantly over the last decade. This is a simple concept most IT professionals understand.
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