基于移动Agent的分布式拥塞控制策略

Distributed Congestion Control Mechanisms Based on Mobile Agent

提出一种基于移动Agent分布式的拥塞控制策略DCCMA。DCCMA策略通过将网络结点和端点相结合,直接提供拥塞检测和拥塞控制机制。与传统的RenoTCP相比,大大缩短了源端点的拥塞反应时间;另一方面,在UDP应用层对其发送速率加以控制,使之体现一定的TCP友好性,同时对具有恶意攻击的数据流(如UDPFlood和TCPFlood)和传统的没有拥塞控制机制的UDP数据流(如视频流)加以惩罚和限制,降低了恶意攻击数据流的危害。仿真实验验证了该策略的有效性。

In this paper, a completely different approach, the DCCMA, as a unified solution is proposed. The comparison with traditional Reno TCP shows that by providing congestion detection and congestion control mechanism in both network nodes and endpoints, DCCMA greatly reduces the congestion reaction delay in source endpoint. On the other hand, through punishing and restricting attacking stream and UDP stream of no TCPfriendly, DCCMA reduces the danger of the attacking stream, and shows TCPfriendly to UDP stream. The results of simulations show that the DCCMA scheme is effective.