QoS routing for anycast communications: Motivation and an architecture for DiffServ networks

被引：25

作者：

Hao, F ^{[1
]}

Zegura, EW ^{[1
]}

Ammar, MH ^{[1
]}

机构：

[1] Bell Labs, Murray Hill, NJ 07974 USA

来源：

IEEE COMMUNICATIONS MAGAZINE | 2002年 / 40卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/MCOM.2002.1007408

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Much research in QoS routing has focused on the unicast communication paradigm. However, another communication paradigm - anycasting - has grown in importance in recent years. In the anycast paradigm, one endpoint is specified and the other is selected from a set of "equivalent" endpoints. An anycast service in a QoS-based network requires selection of both an endpoint and a path that satisfies a QoS constraint. This article provides back-ground material on anycasting in both best-effort networks and QoS-based networks. We then focus on the differentiated services QoS model, and present the design of a QoS-based anycasting architecture consistent with that model. Via simulations, we explore the design options implied by the architecture, including signaling protocols, server selection/sorting algorithms, and resource reservation granularity. We conclude by highlighting open problems in the emerging area of QoS-based anycasting.

引用

页码：48 / 56

页数：9