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With the proliferation of network management tools that adjust link and path characteristics to optimize network performance and health, TCP's are frequently incorporating path characteristic detection mechanisms to quickly adapt to the effects of these changes. Optimal TCP performance, including rapid adaptability, depends on, among other things, an accurate view of the Bandwidth-Delay Product (BDP) of the path. Towards the goal of prompt detection of large changes in the BDP, the authors propose a detection scheme that can be applied as a sender-side only modification. Specifically, they focus on link Layer (L2) handoffs at the bottleneck link of the path.
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