TITLE

Taking WAN Optimization To New Levels

AUTHOR(S)
Howard, Matthew
PUB. DATE
February 2005
SOURCE
Business Communications Review;Feb2005, Vol. 35 Issue 2, p60
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
The article presents information on the wide area network (WAN) optimization. The need lo optimize the delivery and behavior of enterprise applications across existing network resources has given rise to WAN optimization appliances. To date, those appliances have used packet-level acceleration to double or even triple effective link capacity. However, these solutions treat the symptoms, and leave a lot of potential throughput on the table. To get at the root of the problem, attention is shifting to application shaping technologies that use a session layer approach to enable a quantum leap in WAN link performance. The current generation of WAN optimization operates at the packet level, compressing all traffic by reducing duplications in the data streams. This brute-force acceleration requires a lot of processing and can introduce performance-sapping overhead. The result is a best-efforts environment that does not support the deterministic requirements of some critical applications. Packets are hurried along indiscriminately, with allocation of resources left to the routers. Packet-level WAN optimization appliances view traffic at Layer 3 or below, where they cannot see the forest for the trees. A given piece of information is spread across more than one packet, and the application that generates it spans many, many packets.
ACCESSION #
15951357

 

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