November 2021 - opensource-wg

new open source tool: prefix list aggregator
by Alexander Zubkov 30 Nov '21

30 Nov '21

Hi, I made tools to aggregate prefix lists, repo is here: https://gitlab.com/qratorlabs/plag There are two tools: plageq - makes strictly equal aggregation of prefixes plagmax - maximally aggregates, discarding subsets They should be already quite useful, so everybody is welcome to use them and leave feedback. I have only found some alternatives available: 1) https://github.com/job/aggregate6 This is almost the same, but it is very slow for big lists and eats zillion bytes of memory. My tools need only a couple of seconds for lists of ~2M prefixes and around ~100M of memory (including spare memory, which is not used, total amount is fixed at compile time now) 2) bgpq4 can also do aggregation while fetching the prefix list. It does it fast too, but it is not perfect. My tool on the other hand generates perfect minimization in case of plagmax. And I suppose minimal possible number of lines in case of plageq (actually it is depth-limited in config now, but for deeper depthes there should be extreme number of prefixes in the list) Here are some examples, comparing it to bgpq4. bgpq4 spends most of the time requesting prefix lists and waiting for a response, so do not pay much attention to its times. # time bgpq4 -4 -F '%n/%l\n' AS2914:AS-GLOBAL >ntt4.0 real 0m 30.38s user 0m 4.29s sys 0m 0.32s # time bgpq4 -4 -A -F '%n/%l{%a,%A}\n' AS2914:AS-GLOBAL >ntt4.eb real 0m 30.41s user 0m 3.98s sys 0m 0.24s # time bgpq4 -4 -A -R 32 -r 1 -F '%n/%l\n' AS2914:AS-GLOBAL >ntt4.mb real 0m 31.71s user 0m 3.94s sys 0m 0.22s # time ./plag/plageq <ntt4.0 >ntt4.ep max nodes: 29.03%, 3044261 / 10485760, 34.84MB / 120.00MB real 0m 0.97s user 0m 0.94s sys 0m 0.03s # time ./plag/plagmax <ntt4.0 >ntt4.mp max nodes: 2.83%, 296843 / 10485760, 2.26MB / 80.00MB real 0m 0.47s user 0m 0.44s sys 0m 0.02s # time bgpq4 -6 -F '%n/%l\n' AS2914:AS-GLOBAL-v6 >ntt6.0 real 0m 7.25s user 0m 1.44s sys 0m 0.03s # time bgpq4 -6 -A -F '%n/%l{%a,%A}\n' AS2914:AS-GLOBAL-v6 >ntt6.eb real 0m 7.14s user 0m 1.22s sys 0m 0.06s # time bgpq4 -6 -A -R 128 -r 1 -F '%n/%l\n' AS2914:AS-GLOBAL-v6 >ntt6.mb real 0m 8.04s user 0m 1.26s sys 0m 0.04s # time ./plag/plageq <ntt6.0 >ntt6.ep max nodes: 11.38%, 1192943 / 10485760, 13.65MB / 120.00MB real 0m 0.40s user 0m 0.37s sys 0m 0.02s # time ./plag/plagmax <ntt6.0 >ntt6.mp max nodes: 2.57%, 269912 / 10485760, 2.06MB / 80.00MB real 0m 0.22s user 0m 0.19s sys 0m 0.03s # cat ntt4.0 ntt6.0 | shuf | time ./plag/plageq >ntt.ep max nodes: 40.41%, 4237202 / 10485760, 48.49MB / 120.00MB real 0m 2.44s user 0m 2.20s sys 0m 0.07s # cat ntt4.0 ntt6.0 | shuf | time ./plag/plagmax >ntt.mp max nodes: 10.16%, 1065244 / 10485760, 8.13MB / 80.00MB real 0m 1.33s user 0m 1.04s sys 0m 0.04s And here are number of lines in the resulted files: 2038959 ntt4.0 <- unaggregated ipv4 prefixes 414558 ntt4.eb <- bgpq4 equal set 395831 ntt4.ep <- plag equal set 128522 ntt4.mb <- bgpq4 minimal 99794 ntt4.mp <- plag minimal 540047 ntt6.0 <- unaggregated ipv6 prefixes 80764 ntt6.eb <- bgpq4 equal set 79875 ntt6.ep <- plag equal set 38193 ntt6.mb <- bgpq4 minimal 38023 ntt6.mp <- plag minimal

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Agenda Open Source WG RIPE 83
by Martin Winter 22 Nov '21

22 Nov '21

RIPE is starting... and below is our agenda. And as a result from the WG Chair elections, we got a new, additional WG Co-Chair: Marcos Sanz. His term starts at the end of this RIPE meeting and he will introduce himself at the end of the session - and (if time permits it) to some questions See you soon at another (virtual) RIPE meeting Open Source WG Chairs ---- Agenda RIPE 83 Open Source WG Session Thursday, November 25, 14:30 - 15:30 A. Administrative Matters (Working Group Chairs) Welcome finalize agenda approval of minutes from previous WG meeting(s) review of action list Results of WG Chair Re-Election B. Virtual IPv6 Security Lab Environment (Ondřej Caletka, RIPE NCC) Recently, RIPE NCC launched a new free e-learning course on IPv6 security in the RIPE NCC Academy. With this course, we also offer a way to practice some attacks and protection against them on your own computer. I will present this virtual lab environment and describe the open source components it is based on. C. Through the Looking-Glass - 5 Years of BGP-Adventures (Annika Hannig, DE-CIX) Alice is a BGP Looking Glass with support for BIRD, GoBGP and since recently OpenBGPD. It is widely adopted by IXPs across the globe. After a short retrospective look at the history of Alice, having its origin at the RIPE73 hackathon in Madrid, we'll have a look at the architecture, features and all the new things that were implemented during the last two years. We will have a look at the challenges of maintaining an Open Source project over now more than five years in an ever changing ecosystem. Finally we dare looking into the future of Alice and what to expect in the next years. D. Introduction of Marcos Sanz as additional WG Chair (Marcos Sanz, DE-CIX & Working Group Chairs) Marcos Sanz joins us as an additional WG Co-Chair. His term will start with the end of this RIPE meeting.

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Call for Opensource-WG Presentations (Virtual RIPE83, 22-26 Nov 2021)
by Martin Winter 10 Nov '21

10 Nov '21

The next RIPE Meeting is coming up again - your chance to present about some interesting Open Source Please be aware that this RIPE meeting is VIRTUAL again. If you would like to give a presentation during the OpenSource WG session, then please contact us (the WG chairs). In general, each talk is 15-30 mins (depending on how much time is needed). If you have some idea and not sure how/if you should present something then feel free to contact us as well to discuss the idea. For small project updates, we are planning to reserve some time at the end of the WG session. These short 5..10(max) min updates/talks are decided on the day before the WG session on a time/space available base. No need to submit anything for these talks at this time. Thanks, Martin Winter & Ondrej Filip OpenSource WG Chairs

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