Measuring Load-Balanced Paths In The Internet
Proceedings of the 7th ACM SIGCOMM conference on Internet measurement(2007)
摘要
Tools to measure internet properties usually assume the existence of just one single path from a source to a destination. However, load-balancing capabilities, which create multiple active paths between two end-hosts, are available in most contemporary routers. This paper proposes a methodology to identify load-balancing routers and characterize load-balanced paths. We enhance our traceroute-like tool, called Paris traceroute; to find all paths between a pair of hosts, and use it from 15 sources to over 68 thousand destinations. Our results show that the traditional concept of a single network path between hosts no longer holds. For instance 39% of the source-destination pairs in our traces traverse a load balancer. Furthermore, this fraction increases to 70% if we consider the paths between a source and a destination network.
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关键词
traceroute,load balancing,multipath,path diversity
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