关键词：TCP协议；端口扫描；TCP性能；路由器；延时
摘 要：One possible solution to lower latency is to increase the Maximum Segment Size (MSS), which would allow transmitting as much information using fewer packets. However, this impairs efficient packet multiplexing by routers. Another approach to reduce latency is to increase TCP’s initial window size, which also allows sending more data at once. However, the benefits of this for short flows can be wiped out if the flow experiences even a single packet drop as this will cause retransmissions and in some cases timeouts. In this paper, we propose the concept of super-packets to deal with this all-or-nothing property of flows. Super-packets are a collection of packets whose collective performance is critical for applications. End-hosts explicitly request reservation of buffer space for super-packets in routers who in turn look at their buffer utilization and guarantee forwarding of all packets in the given super-packet. This paper proposes a simple and efficient algorithm for such reservations in routers.