What should be considered for a WAN optimization solution into account

You are assessing the WAN (Wide Area Network) and wondered how to optimize network performance. What are realistic options for a solution?

Remember that this is not necessarily a broadband solution like MPLS or Ethernet. Rather, it is a usage of bandwidth demand.

I would suggest looking for WAN optimization appliances: Riverbed, Juniper, Packeteer. In many cases, have a great job with the latency, especially when the main source ofThe problem is that CIFS WAN problems are not aware (copy / open / edit files with Windows).

The first step, in my view, is to discover the location of your IP packets take. A delay may occur if the satellite link rather than a fixed line (Earthbound wireless, fiber or under-ground water, etc.) goes out.

First, I would suggest tracking packages "route ..... then makes a SLA with the service provider and see if they want the quality parameters of cotton, to guaranteeDelay, jitter, etc.

I would not want to install or to buy something before the jump!

Note that all the WAN accelerators to solve the problems of latency. To select all the producers, the works of WAN acceleration. But the choice is not the right one easier. It depends on your WAN traffic.

If you use applications (like Citrix, SAP) as a priority for traffic applications (such as Packeteer or Ipanema), offer the best results. However, if the traffic is file-oriented (MS-Office) ..... asYou can get the best results with the accelerated reduction of data, such as Riverbed, Juniper, Citrix and Cisco. Typically, you will probably be the best results with Riverbed.

WAN optimization appliances to apply only to TCP flows. If you are latency issues with UDP streams (VoIP) do not think you can do nothing against the (real-time traffic is very sensitive to latency)

Using generic TCP flow optimization, you will find many suppliers in the market, the sale of productsa good fit for your needs: WANScaler Citrix, Cisco WAAS, Juniper, Riverbed, expand and probably a lot of other producers ...

Here's the trick that everyone uses to hide the latency of the effects (that do not hide the latency, because there already, hiding the fact), the solutions to optimize Wan act as a transparent TCP proxy, spoofing the IP address of the server client and client server IP address spoofing and TCP ACK send messages at local level. SoYou do not have to wait for time to return to the ACK. Helps fast "fill-the-pipe". This is the great solution to avoid latency, such as the TCP throughput is very sensitive to latency because of the feedback ACK, the congestion control has a terrible effect when you start TCP connections.

They also implement selective acknowledgments and large initial window flow control use the entire bandwidth of the WAN connection. Add some compression mechanisms areartificially increase the available bandwidth, and some optimization layer 7 (especially for the CIFS file sharing, but also HTTP compression-based), integrated QoS stuff, and you have an overview of what we call "WAN Optimization".

Whichever vendor you choose to implement all that I described above.

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