On Class-Based Isolation of UDP, Short-Lived and Long-Lived TCP Flows

The congestion control mechanisms of TCP make it vulnerable in an environment where flows with different congestionsensitivity compete for scarce resources. With the increasing amount of unresponsive UDP traffic in today's Internet, new mechanisms are needed to enforce fairness in the core of the network. We propose a scalable Diffserv-like architecture, where flows with different characteristics are classified into separate service queues at the routers. Such class-based isolation provides protection so that flows with different characteristics do not negatively impact one another. In this study, we examine different aspects of UDP and TCP interaction and possible gains from segregating UDP and TCP into different classes. We also investigate the utility of further segregating TCP flows into two classes, which are class of short and class of long flows. Results are obtained analytically for both Tail-drop and Random Early Drop (RED) routers. Class-based isolation have the followi...

• Type: Conference
• Year: 2001
• Where: MASCOTS
• Authors: Selma Yilmaz, Ibrahim Matta
• Keywords: Class-based Isolation, MASCOTS 2001, MASCOTS 2007, Such Class-based Isolation, Unresponsive Udp Traffic