From: Yuhan Cai (yuhancai@cs.washington.edu)
Date: Sun Oct 31 2004 - 22:37:23 PST
Title: The Revised ARPANET Routing Metric
Author: Atul Khanna and John Zinky
Reviewed by: Yuhan Cai
Main results of the paper:
， It presents the revised ARPANET routing metric which has significantly improved the network performance but does not affect the Shortest Path First (SPF) route computation algorithm.
， The shortcomings of the existing routing schemes are overcome by a successful new metric in terms of both user delay and network capacity.
Strengths of the paper:
， Substantial performance improvements are provided.
， It has kept many features of SPF, and on the other hand, overcome most of the major defects of it.
Key limitations:
， It assumes conditions of light loading, but does not guarantee SPF when heavy loads come.
Relevance of the paper:
， Not only is the revised metric effective for ARPANET, but also it can be generalized to other major networks.
Future work:
， It might be of interest to explore how to deal with cases of congestion and large jitters.
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