专利名称：Method and apparatus for directing a flow
of packets based on request and serverattributes
发明人：Steven Colby,John J. Krawczyk,Raj Krishnan
Nair,Katherine Royce,Kenneth P.Siegel,Richard C. Stevens,Scott Wasson
申请号：US10197339申请日：20020717
公开号：US20040039820A1公开日：20040226
专利附图：
摘要：A content-aware flow switch intercepts a client content request in an IPnetwork, and transparently directs the content request to a best-fit server. The best-fitserver is chosen based on the type of content requested, the quality of servicerequirements implied by the content request, the degree of load on available servers,network congestion information, and the proximity of the client to available servers. Theflow switch detects client-server flows based on the arrival of TCP SYNs and/or HTTPGETs from the client. The flow switch implicitly deduces the quality of service
requirements of a flow based on the content of the flow. The flow switch also providesthe functionality of multiple physical web servers on a single web server in a way that istransparent to the client, through the use of virtual web hosts and flow pipes.
申请人：CISCO SYSTEMS, INC.
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