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Saturday, November 21 - 2009

Riverbed: Understanding the hidden caveats of network transparency

  • Middle East: Monday, November 09 - 2009 at 16:46

The term "transparency" has many meanings; more recently in the field of wide-area data services (WDS), transparency has come to be understood as the ability to preserve TCP/IP header information, including source and destination IP address, in the accelerated wide area network (WAN) traffic flow. The prevailing perception is that such a transparent WDS solution can be deployed without any modifications or reconfigurations to the pre-existing network infrastructure.

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Such a transparent WDS solution has considerable appeal. When deploying a WDS solution, many IT administrators want to preserve the functionality of pre-existing QoS, security, and traffic monitoring infrastructure without significant reconfiguration or disruption of the existing network.

Managed service providers (MSPs) want to continue supplying important traffic monitoring statistics to their customers while using WDS solutions to accelerate data transfers over the WAN infrastructure that they provide.

All of these considerations are valuable goals; nevertheless, to achieve them without jeopardising the integrity of the functioning network requires a clear understanding of what can go wrong when utilising the transparency features of WDS solutions.

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