Summary: A Probe­Based Server Selection Protocol for Differentiated Service Networks
Meng Guo, Mostafa H. Ammar, Ellen W. Zegura Fang Hao
Networking and Telecommunications Group Bell Laboratories
College of Computing, Georgia Tech, Atlanta, GA 30332 Holmdel, NJ 07733
Abstract---Quality­of­service (QoS) techniques and server repli­
cation are two complementary approaches that can improve the
performance observed by users. QoS techniques provide differ­
entiated service to meet the diverse needs of applications; server
replication enables load balancing across a set of servers. To com­
bine the two approaches, we need to address one important ques­
tion: how to select a server among a replicated set that satisfies the
user QoS requirement. In this paper, we propose a probing­based
protocol to discover network resources and make reservations for
requests in differentiated service networks. This approach opti­
mizes network resource utilization with reasonable signaling over­
head. Furthermore, we compare five heuristics that can be used
for server selection. We also investigate two methods that can re­
duce probing overhead, namely caching and the technique of prob­
ing from a subset of servers.
I. INTRODUCTION

Source: Ammar, Mostafa - College of Computing, Georgia Institute of Technology
Zegura, Ellen W. - College of Computing, Georgia Institute of Technology

Collections: Computer Technologies and Information Sciences