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VIRTUALISATION Compression Depression
VIRTUALISATION Compression Depression | Compression Depression |
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| by Mike Bantick | |
| Thursday, 18 June 2009 | |
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Then I realised, where I had seen this before, using Juniper sequence reduction devices in the corporate environments. This is not an ad, I am sure other manufactures of network devices have similar solutions, what follows however is my experience with the Juniper WX range (formally Peribit WR and SR boxes) of compression and WAN acceleration hardware. The Juniper WX range is sold based on network capacity, with the important thing to remember that it is the outgoing (I.E. compressed data) that is important for the licensing. They are also limited by how many tunnels they can establish, more on that in a moment. The WXC range is also marketed in this way, with the main difference being the addition of a hard drive to the device, this allows for greater string length storage capacity, with the follow on effect being greater efficiency in compression. A quick overview of network positioning is important in this discussion. The diagram below shows a typical setup with the compression units being installed in-line behind the routers. From experience we have found putting your WX compression unit’s off-path (hanging off the switch) and as far ‘back’ in your WAN as you can manage is best. The advantages are the ability to change out the equipment without disrupting your network, and also getting compressed data to traverse as much of your network as possible.  |
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