Oct. 17/18 2005 - RoN meetingNetwork tests on SURFnet6 Hans Blom & Paola Grosso AIR group - UvA.

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Oct. 17/ RoN meetingNetwork tests on SURFnet6 Hans Blom & Paola Grosso AIR group - UvA

Oct. 17/ RoN meetingNetwork tests on SURFnet6 Motivation SURFnet6 as a testing ground. We want to focus on: -Performance: can we achieve the expected throughput for IPv4 and IPv6 traffic? Are our applications behaving as expected ? -Configuration: is the connection to the end user network devices well behaved (vendor interoperability)? -Light paths: how do setup and use of light paths work? (This is somethng for the future) We were able to start to work on this only in Q3, when we had for the first time the possibility of creating a test setup during the pre-production phase.

Oct. 17/ RoN meetingNetwork tests on SURFnet6 Setup We had an advantage: the physical proximity to SURFnet6 equipment in Amsterdam/SARA. Very trivially, this made it easier to create a link between the network devices. We worked on the following physical setup together with CWI: The CWI network device is a Foundry NI40G. The AIR network dvice is a Nortel ESR All the link are 10GE: from the computing nodes to the switches, and between the switches. Test node SURFnet6 CWI networkAIR/UvA network AVICI routers& Nortel ESR 8610 Foundry NI40G

Oct. 17/ RoN meetingNetwork tests on SURFnet6 Test scenarios We developed tests scenarios changing the routing and switching points: 1.Completely switched path, one subnet 2.Routing on the CWI switch, switched in SURFnet6. two subnets 3.Routing on the AIR switch, switched in SURFnet6, two subnets 4.Routing on one of the SURFnet6 AVICIs, switched at end devices, two subnets 5.Routing on CWI/AIR and SURFnet6 AVICIs, multiple subnets So far we have been able to work only on scenarios of type 1,2 and 3. We have not been able to do tests with routing on the AVICIs. We hope to be able to do this in the following months, using the test environment that is being built.

Oct. 17/ RoN meetingNetwork tests on SURFnet6 Results The test description and the results are available in: Here we report results of TCP iperf tests for scenario1 (switched path) and scenario 2 (routing on end user equipment)

Oct. 17/ RoN meetingNetwork tests on SURFnet6 Conclusions and future work Tests are ongoing. What have we learned so far? - We have not see any major problem in achieving reasonable performance with the current scenarios. Results have been consistently reproducible. - We have seen at times problem in the interaction between network devices, specifically flow-control between the CWI Foundry and the SURFnet6 Nortel. CWI and Foundry are looking more into this. Where are we going? - We hope to be able to work with more complex scenarios, especially the ones involving routing done by the SURFnet6 equipment. Possible on the test setup. -We also want to add more test nodes to be able to generate more complex traffic patterns and higher bandwidth throughputs. Comments and questions to: and …. and thanks to Marijke Kaat from SURFnet and JP Velders from CWI!