|
计算机科学 2006
A Rerouting Issue with TCP Vegas and its Solution
|
Abstract:
To overcome the problem of original Vegas scheme which probably brings forth the throughput degradation after rerouting operations, we propose a novel mechanism called "active spurring", whose basic idea is that the source actively increases the BaseRTT to break down the equilibrium when the congestion window(cwnd) is stabilized to some equilibrium, and then Vegas is spurred to adjust the cwnd to be stabilized to a new equilibrium by the basic window adjustment mechanism in Vegas, effectively restoring the throughput of Vegas connections accordingly. "Active spurring"does not modify Vegas and can be simply embedded into the TCP Vegas or enhanced TCP Vegas as an independent module with a low overhead and hence be extended easily.