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University of Michigan and Merit Internet2 Qbone Testbed Results
William A. (Andy) Adamson
andros@umich.edu
In testing the quality of service functionality of networks, it is desirable to take measurements from the applications viewpoint. In this scenario, the network is viewed as a black box. A simple unicast traffic generator application, gen_send and gen_recv is used. The traffic generator application is designed to be able to fill a 100Mbit Ethernet, and account for all data sent. Thus, reserved bandwidth flows and/or best effort flows can be sent, competing for the resources of a 100Mbit Ethernet. Packets are marked with a sequence number. Per second bandwidth and packet loss data are collected.
Single Router Testing
The purpose of this test is to start with the least measureable qbone unit, three interfaces on one router in order to understand QoS feature configuration and behaviour before testing across multiple routers.
Cisco 7500 test results. The Cisco 7500 successfully demonstrated Police and Drop functionality and well as bandwidth reservation.Torrent IP9000 test results. The Torrent IP9000 successfully demonstrated Police and Drop functionality.
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