The concept of bandwidth throttling is not new. For over a decade, network infrastructure hardware and software vendors have offered a variety of products to allow Local Area Network (LAN) and Wide Area Network (WAN) administrators to control and manage the traffic traversing their networks. Such products have traditionally been implemented as part of the overall network infrastructure. These products usually operate at Layer 3 or Layer 4 of the ISO protocol stack. Either incorporated into the feature set of routers and switches, or as stand-alone devices or servers, these products have a scope/jurisdiction of the network segments with which they share interfaces.
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