5 Ways WAN Optimization Can Still Improve Efficient Networks

WAN-Optimization-Helps-Tame-Internet-WeatherApplications are smarter today; bandwidth is cheaper. Can you really blame anyone for thinking WAN optimization is just a pointless expense? In a world embracing the hybrid clouds and hybrid WANs, though, WAN optimization is more relevant today ever. Here are the first five of ten ways WAN optimization can still help your organization:

  1. Optimum Performance Regardless of Internet Weather – Traffic conditions across your hybrid WAN probably vary significantly between routes. Some will be lightly congested, showing moderate amount of latency. Other routes might have latency and loss rates severe enough to disrupt your user’s experience. Routing protocols cannot differentiate between these routes, leaving application susceptible to Internet traffic conditions. Silver Peak WAN Optimization constantly monitors changing Internet weather conditions, dynamically selecting the optimum path for each application. Even if the Internet is stuck in rush-hour, your applications can still perform-to-spec.
  1. Easy, Fast Encryption – We all know how important data security is today, but securing traffic between sites can be time-consuming and costly. The conventional approach, IPSec hardware, can be complex to configure. Adding the IPSec headers to existing traffic leads to larger packets, often resulting in packet fragmentation and slower applications. Silver Peak WAN optimization simplifies IPSec tunnel configuration. Silver Peak has invested significant intellectual property in developing easy-to-deploy, highly scalable, tunnel-based architectures. What’s more during the optimization process, Silver Peak identifies the ideal packet size, avoiding packet fragmentation.
  1. Get More for Your Bandwidth – Deduplication, we’re told, is unnecessary. Storage vendors run their own deduplication and compression algorithms. If bandwidth is really an issue, more is always available on the cheap. The reality, though, is that bandwidth can still be expensive on some routes and regardless, adding more bandwidth rarely helps long-distance TCP connections. With just ~10-15ms of latency, about the distance between London and Stockholm, the limitation to better throughput is not bandwidth its latency. Even then most application-specific deduplication algorithms are limited. They can only identify repetitive data patterns within one application’s traffic. Once identified, they must send resend entire data blocks not just the few bytes that changed. Silver Peak identifies data patterns across any application and works at the byte-level, just the changed portion of the data block is sent across the WAN. Practically, this results in as much as a 20x data reduction across the WAN.
  1. Overcome Congested Networks – Packet loss, out-of-order packets and other effects of network congestion are endemic to the Internet. It’s a significant change from private carrier services, which are engineered to minimize network congestion. As packets are lost they must be retransmitted; as they arrive out-of-order that must be reordered. Both introduce overhead that degrade application performance. Neither can be fixed by applications alone. Silver Peak’s conditions the path, regenerating and reordering packets. The result: better performing application even across the congested Internet. 
  1. Prioritize What’s Really Important – Everybody loves a good movie, but BitTorrent probably does not rank high on your favorite corporate application list. Yet, BitTorrent and many other applications consume site-to-site bandwidth, undermining the performance of other applications sharing the network and driving up costs. Silver Peak solves the problem by shaping traffic, prioritizing critical traffic while constraining recreational or personal-use traffic. You end up being able to do more with your bandwidth and critical applications operate effectively – every time.

There you have it, five ways WAN optimization can help even when your network seems to be clicking today. Need a few more reasons? Stick around; next week I’ll explain the one way WAN optimization can save your company from regulatory fines and policy violations plus give you four more reasons.