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34C3 Infrastructure Review

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the the the the and and the the thing as regards the moon everybody will have made it has the right to make the move number alliances demodulations do you all have this weird I got the last year actually was you finally found a way in the library the numbers and then we decided to move beyond and we have a new government and it's growing and growing and suppose next year we haven't even more stuff to discover so I'm looking forward to next year but for now all data Johns among us year are 2 figures the fact that the results we can start to measure and focus on next year Leon it's yours and thank you so let's start with an knock review some this is as my name is Leon and together with a whole lot of other people we run this year's event network and a set of that size distance yeah so and where with the move to let the we're entering a whole area of hundreds everything is obviously is quite lot now everything's bigger now there and that the give you an idea of he is the size of the
CCH and excellent that the
size of the vessel and I have so in this presentation we would like to give you an insight on the new challenges which came up with the growth of size like acquiring and with redesigning our backbone rolling of x and y phi on a much larger area than we've ever done before and uh all that while adhering to the world health and safety regulations
the so given this year's size of the venue we need to radically scale of our network and put on top priority on outstanding safety so we started in summer with so much optimism I think and learned all about the existing infrastructure we're excited to discover that this venues impressive fiber never actually includes only single-mode cabling which is a favorite favorite type of fiber so as you can see there was
also plenty of free virus available for us to use but at the same time we were overwhelmed by the amount of cabling so we needed to find a way to reduce all the information down to a usable and understandable form we could work with so obviously the only sensible choice was turned of future technology the and grave they digestable caving diagram onto a plate of lasagna
have having feasted on all this information we were able to see a clearer picture of the network we're going to build a new development disciplines of a new era of Congress so finally were making new progress all planning of the burned last finished yet haven't safety regulations are very strict in venues like this so lots of thought has the ball and the fire prevention and emergency escape planning and other other of security and safety related stuff just like all the other teams we were also busy ensuring everyone's safety there and yet we need to do our part as well basically of the network side this means make sure you data packets have a wide enough escape crowds to what's the infinite so it's actually build a fully redundant 100 Gigabit that backbone always 3 in-house routers furthermore what we we're busy working on the downside network layouts we asked on Procurement managed to work on arranging some public connectivity and as an expert in his field so we figured he would be well aware of what kind could kind of connectivity was needed and as you know we see the uplink users in the ball part of 30 to 40 Gigabit per 2nd in the past so the logical thing to do would be to arrange 50 or maybe 60 or even 100 gigabits so I'm just to be on the safe side unfortunately all
I have I have 1 he was dutifully arranging we lost track of them and forgot to tell it to stop so next thing we knew we had accidently arrange for an interview with developing capacity leaving the building in 3 geographically redundant directions so this was possible due to some very friendly providers um some of which even long does their lab equipment so we could feel test leading edge technology arm with futuristic names such as alien wavelength lot allowing us to run to entity with the 2nd 1 single wavelet to what the Bn idea so that so that so after learning about this we decided for all of them were really good because after all who are we to say no to more but with right however this scheme us additional challenges for crying the necessary network proper obviously that In the past we were always wearing that's another 1 of our main ones for the next equipment might not have the necessary amount of required the graph is available for us so this year knowing all the facts were going to them on the talk to them only and it's uh called told them what we actually needed to be granted us where we connect 100 big stuff like that and unfortunately we learn the very last minute that's the routers the want of merit available the only rather that would give us the graph becomes bigger than the 1 we're asking for it and then 3 mind organization we running this obviously to our program manager who interferes in desperately agreed with the proposal because that holds the mother of all problems I know that and we about talking about it for quite some time already in the last years well we can only call collocator our routers and like some on us the patterns Europe and contrary out very big well at conditions and and with less more out of we in hand hearing that would might be running in danger of losing using them in the spacious rooms year in my selects so the figure out of the office of another purpose we are not leaving by accident because we're thinking 0 there's nothing in there anymore so for additional uh we introduce the triangle wrote a topology so you data can still escape in case anyone path is blocked by a firewall angel this means that your data as now around about 100 50 per cent more secure and safer than ever
so upscaling was a central theme for every 1 of this year's Congress but also for Wi-Fi fire obviously known as you know in the CCH there was no more room for anymore it's as points but just maybe worry Italy's um the but luckily
United think we were able to grow our potential and cover more stays with life like whenever we have we we broad 188 as points of the Leipzig which is the the law of and that's about the number we brought to Hamburg some but like the you does out by running a lot of Rolodexes points and that's the upper bars so so things so that some unfortunately thereby you ruined everyone's life experience on the on the on the congested bands in world yeah the problem here is that xt as societies spamming is taking away a lot of air time for everyone in your environment there are people as warming up to 100 2 200 different as those ideas that really ruling the Wi-Fi for everyone in the whole neighborhood we solve things like this
which on paper as something that's if you're sitting there in the eyes of the area and you don't get any Wi-Fi anymore you directly or by physical but you don't get any packets through this is the reason why people are starting to span happens the Nobel access points taking away frequencies which we could but would really far like this so basically whoever did this and all the other ones out there but the reason that the wife of acceptable as good as it was a member of so the problem is that when you open access find that it has the broadcast of the society and beacons that are transmitted at the lowest possible frame rate so they take a lot of their time even when there's no data transmitted over them so please don't bring your own access point in the future so in and speaking of folding so and 1
blind we were looking at a traffic graphs and notice some of patterns that we couldn't really explain we thought maybe it's service streaming translated from from the lecture halls but then we figured it doesn't correlate with the lecture schedule and then we were wondering what would cause size gigabits of outgoing and 6 trophic In such strains patterns but then it occurred to us so was sending as a message the and how hope it will be coded as more so of that that's intelligent selection read 34 C. to read the and and yeah we stop this and this last year which was quite popular and very accurate to summarize for members of our pressed the necessary information we
have put everything basically on 1 slide so you just have to take a picture of this and then you can write on articles you want you know you have the right information you don't need to exploit anyone or just in advance and stuff so that justice and both would reflect a little gladly capacity of a former gigabits per 2nd leaving mathematically telling about this already we had at the campus of the year within immense elastic and in Berlin of up to mimic the 20 gigabits per 2nd biodiversity I have provided the response of males and of all this crap that's what we're providing here using up to 42 . 2 gigabits per 2nd which can be better we have a lot of space left so you know that time the vector for that moment some sort of bring some of that actually can use the traffic and then everything will be fine have the lead get more I did not want war is someone on the internet and below the minimal area we have 1 more thing that you have a very acidic loving but anyway uh yeah the uh somewhat uh the clever use of all of them think that we have almost at 188 once it wants and yeah all this
will be the possible ones of what's hands to conform to so and 1 more so after after after responders at the limit of 15 pellets of equipment some with a great to was not help there's an amazing amount of motivated and dedicated with all the things you would like to thank the um have everything worked out fine in the end and we were able to actually give you the networking experience you deserve but during the planning phase we accounted 1 more the norm of problems yeah yeah just like in the last years we wanted to apply our of a recipe for building those consistency you that were obviously but it is suddenly ran into all kinds of issues become really explain something such destined to be off and you couldn't put our finger on the problem but then it occurred to us hourly he was the same as last year so
obviously and that was the main problem we upscaled than and securities every last we asking incident and lot of the network obviously but we forgot to do the same television so leveraged to an emergency weekend retreat and soul-searching mission to come up with a way to cope with the Rothley neglect and then we finally where successful so let the presenter you I want you to restrict
up to 100 % phase was thank thank now finally you most of them money again and so we can peacefully rest and built long and
questions that you have to have 2 instances 1 only and slot will as which autonomous systems did we interact with the mouse sorry Cary which autonomous system did we can always interact the most still have that number and the divorce had not but I don't really I only know was probably had for whatever reason it here's my 1 it if I wanted to leave you are message in Morse code by sending out a lot of traffic spare with they think 0 that's traffic to so my advice would be in some descended anywhere but with a really tend to this so that the packets can drop soon after the order and a dozen or anyone but it will show up in our grass and I hope this is what later this year we'll have a higher confidence and uh is to the extended metrics a data dump so somebody wants to doesn't like the graph in data that will make available and I think we could publish some of them you know about because we we have them in our Prometheus database and we obviously need to check which are sensitive that which aren't but we could work on yeah maybe it for exam the uplink grass you want analyze that more detail wickets uploaded somewhere just follow it for the accounting case we do unit is there the with can remove those not really a question that I I couldn't saturated tend to give it the link I have uh surveying the yellow color connected to was it you who have the was you have high and this server and it an hour and treat the candidates I think most of the time coming to an end are right handed but I'm going to call almost like connectives 108 the backbone but when it was undertaken with a form of the golden capacities so in theory capacity was where right question out of space will there be a presentation about the alien the wave and the test I so the sponsors so who did that task because they have prisoner prepared a presentation I think and uh they are planning to publish that and we might even publish and and that will contain a lot more facts from say I suggest follow a Twitter account and then we can upload presentation number form form of to what is the so the questions about the local network go what sigh using for automated switch configuration because we have no for the configuration itself he didn't have any tool that all we tools for generation of the configurations so basically there will be a reversal be applied manually but the the confirmation itself from self written a Python tools which will generate the necessary configuration from our idea thank thank you certainly the map of all access points yes any of this to the group we could probably make some stranger that's not the way sigh guys that in the controller and sees on the church should contain any sensitive information that Breivik we can we can look at that thanks for use with anyway from 7 this you louder arbitrary usernames and passwords Indian cricket Wi-Fi did you examine the and if so was there anything particularly entertaining while we believe that that is that this this this year because of what basically the same I mean yeah we've done so in the past 11 11 and the previous presentations I I think it'll be a similar we start looking at them because it was funny the 1st yes um yeah and I think is basically the same there's random stuff and there's little 34 C 3 and people cursing measured from the Web the culminated ways we upload and download it things has a collective this number this year a lot a lot yet just so amazing when the publisher uh the raw data for uplink someone can integrate didn't figure it out such that I think we should see I we we where maybe have time for 1 more question about them which is on the order of events and then we yeah so regarding the graphs will you publish that the theory of graphs you're wise on many previous years yeah we have 3 above that was saving all of that and each year uh it bites us because we we need to do the planning on how much capacity what do we do we need where as so what we have is the presentations that we always look up the number of well of the people that the values which is 1 of the reasons we have this like slide in there that doesn't make just learning the guys that you warm warm with 1 of the few who who has not young you or a bit more exotic network and quit compute different challenges but this year we have you ingest region the the uh how
and and the form of a network is run with with a free and open source software osmocom but there was a bit of a difference between because last year and the year
before it was running quite smooth and stable we work with we had a bit of experience and the was a bit simpler so this was a whole network and how was that look like that we use to reduce the osmocom decided and had to have its extends to the infrastructure and now we don't think this and it was quite new for everyone so you form your computer all we only use it for small network with 1 the station and 1 form connected to it now we have a lot of the stations and even more people connected to it so it took a lot of time to to run a face and each of the levels is really 1 team and with 1 separate configuration file and they all have to match else that doesn't work but the initiatives that
complicated it doesn't require a lot of power we ran everything on a small lot who divorced escorting which was running on the guest of attempt to hold chip similar images that was on the this small what we had to add some small of USB dongle because we could not get enough after in accordance with the things like fashion so this is the central part of the main infrastructure and then
with all the stations and easy how they look like they're quite small we have generally at every location we have 1 of 2 small the stations that you send black ones and then a UMTS the white 1 we have them at several occasions we also do not require in 1 meter wide
Wilson with way too much power so this is the installation we had habit everywhere but most of the base stations where we a direct role in all room the GSM room because we needed to keep their gets ending accent and in all of the conference rooms so this is what we had we had
7 GSM base stations 5 UMTS base stations and they have wearing running with low power with his and we could go up to 2 words but the issue is that we have too many people and and all the station camps can't handle don't for every base station what this search for example you can only have 3 calls at the same time so if we have more subscribers nobody would be able to call it was already quite hostile to some calls because of numbers so we sold this year 2 thousand 500 cost thanks to the depart for taking care of 7 because this is a huge task and although we sold that many cards and you could be used to call from past years only 900 of them registered a token all registered an extension of the book everyone else could use to GSM network because you still get an extension and you still consensus SMSs and calls tennis SMS within the network but not to eject ants outside for this and this is actually we had quite a lot because we have spammers but it doesn't require a lot of time with so we don't really care we even that spammers through something important we don't know how many subscribers waiting total harmony calls we didn't do any statistics because we spent a lot of time on setting up the network forward year 1 of the pain points of GSM and UMTS is the licenses you need some kind of license to operate networks and they also want to be operators so while in the past years we could have a test license for the bonus that thing and what this does exist anymore because all the frequencies were sold sold for GSM to become provided us with 3 channels and still come and go and for UMTS there's quite a that is is the tricky because we had USB stations and the US and is not used to you so we just could apply for UMTS bandwidth that the Buddhist that they can we couldn't get get this is also why some UMTS form when table to join a network simply because this is a kind of we advance which is not the standard European and but for all new smartphones they support distance it works the GSM this network
it took a lot of time to a to start because we it's reasonable and it was starting with the tool it was restarting worked had no data but we just had no voice you really had to switch all the time you fall to to be reachable with voice they want to have some data because sometimes the Wi-Fi doesn't work it's it's up to you and there were a lot of precious but that's also the purpose of trying to operate at here is for us to scale up the whole network because when we had when we use just local network all all the software we only have 1 base stations and 1 from connected to it so it's quite rare to have questions and when we have questions which is used in other form because we don't want to see like and here we have no choice we have lots of data lots of the stations of the form so we traced although we have cordoned and all the crashes and we will submit it already and the kids and will submit a lot more tickets sold thanks all 10 testing on English hi how
now we know how it works so next year it will probably have lot of set of the config are there will never again except changing day pieces and we will take something so you is quite new there was no voice for students yes this will be added there would be a lot more you and your speciation simply because of they their smaller so and we have we have looked a number of them so we can spread even more them and it everywhere and maybe we can have as she because we here that uses that the hardware is readily available so we can get it we just like the software so if anyone wants to play with the it's a lot simpler than should with UMTS and GSM feel free to to join a sense and have a talk and then we can maybe to integrate entity with the GSM and UMTS in heaven also provide network at the next Congress I thank you and that and so if there a questions yes I'm
happy to answer them on a commissions but yes there number 7 we choose and between the accomplices how do you test the operand software because you said you need a license from the condition that are going to so how can we then you don't always need a license for the bonus that 2nd for for example this is only if you want to operate on licences which all frequency which I already use if you want to operate on frequencies which are a like mind fight for UMTS yes you can already get licenses and this is only if you want to provide a over here if you just use cables connect you with stations to you fall using a cable you don't require mining license you can also put both things in a Faraday cage and this way you don't know there you don't interfere with the other networks or sometimes you just forget since you have a very very small power it's still works so these are these are the way to do it that was the question you will know what this it is and using the word it's not just 1 day mostly loss of all the horrible to the next topic thank you very much Leon but instead of the future but gate and it's finds the vocal review sages yours audiences related thank you very much hello no so that mean you may have noticed these guys in the in the audience with the red Kelly lights and they had a lot of other people to bring a video from the operations center and I might have some details about that so as you may we where we try to stream out stuff now there has been a lot of technology in recent years a lot of technology development so as to how goat modern streaming of and we tried to adapt for that so I this year with a completely new transcoding set up which allowed to uh basically you have 0 1 the God uh internal of FIL you know former where we have a on the slides of the video formant be heard the 3 languages so so we have 3 languages in most talks which was also 1 of them and we had a completely new way of the playing out the signal in different ways then HL as this time but the 1st year round the with also with Nash and we could make this the default for day 2 so during operations hope there was no there were no big problem with that and but we had adaptive playing so value of had low bad with that would automatically the degrade to slide only and audio then to but as the and finally and I hope you could all enjoy this thanks to the Norwalk of full age the but along yeah that that to translation and additionally for everyone here in the rooms we provided no latency I've cast of streams so you could here of the translations on flight but and finally I think for the 1st time around we had community feeds and we love them like the frightful community I had their own broadcast through infrastructure but we had the the OB units at the all assembly and bridge broadcast through of the network and finally we the 3 TB which you are hope you to good opportunity watching we tried to replay or a lot of you know old Congress content of him that's coming to CCC's soon we got you know a bag of tapes that were suddenly dropped and there's way back at the think 93 let's see but originally it may emerge amoebiasis be and this was the great there's need to get this point and if so here we need to do that last year I we said we might do for k because why not from so we did of evidence very experimental set up this time and we use the hot makes the better but but we the lot stuff concerning the delivery and this is the uh the specialties of 4 case 3 main let's see what next year brings I we got a bit of offense yacht where because without hot where we need that's that's fairly boring so we wrote that on their 1 network on site and had knocked trends toward out of to you know the extra locations and we had a they had to to the data center to Berlin I think the knock out and this will allow us to tear down most of the stuff here and have the last talk trans cold in the data center so hopefully the talks that I the end of today I will be available to you much sooner than in the recent yeah but and finally next to the 4 cases we had bought the makes it all rooms so our own software defined makes R. N. we also took the opportunity this year not just this event but over the years to open source all of all components that are required to set up the stuff itself including and simple recipes so goal to your own stuff use of at the isn't that your assemblies we want take over a log of your assemblies dreams next if you wanna do this you come find of talk to us we are happy to broadcast yourself a higher data through fantastic or you work of and we need to go so we took a bit of so we do get rid of it so while experiments around book to make so this year we had the camera controlled so dead dead used you know the current state of the mix of and so these guys get you see what's going on and if their life or not and we had a real professional in the the provided to us and this was
that this really made it a lot easier to coordinate between a camera but the guys in the back stage to do all the mixing of and so of this work and of course all rumor in the comic book and the Congress Centre and for the 1st time we had an audio control room 0 eulogy so what does that mean I mean what we do is not only video but audio to for the 1st time we have released all told his theory of the it was sold give us the reasons for the above reasons please because when we went when when we did the slides that was actually and someone said no don't don't mention anything about them was like OK why not I mean there's a lot of math the people in the in the audience they definitely have ideas please come find us for why you read 5 that need 5 . 1 the the like so but give a cool thing is this audio control room a remotely controlled the hardware makes us in the the in the in the halls and so we had an independent makes that was independent from the PA here and this is really really a huge step forward in terms of stream and the audio quality because you know there's simply different things you need for or you know of making sure the Founders good in this huge hole and making sure that the audience good in so we could do that and we know that the real good meters and we try to hit a target of minors of 16 uh Disabil units full scale and this is actually derived from the European Broadcasting Union's are 128 standard it and we had bag of audio over dented network that is an audio standards but also which is also IP-based of course we had casualties mean at and coding and streaming of video is no easy business but 1 transcoder died in the process up we're we're we just said the remaining stick until although we had 1 and code of properties the view because we put up too much technology on these encoded cues that we had and we notice that when our monitoring screen that of that load of you know 40 something might not be healthy that we had some broken audio better but we still have enough back-up changed through road to rectify the situation and we had 1 in a hanging over traditional the data center but we could recover that as well top but firmly to the party that you like of and I want you to take guesses on each day I would you think was the highest you talk on day 1 so keynote entered symbolic the the the secondary worthy of make the doors incorrect on day 3 that and this is the total amount almost that some of them to you on the and that did the monarch talk had to distinctive peaks we have no idea what was going on there yeah and what else I mean that was really it is the advertiser that popped up decrease the home talk and they tell you this was totally unplanned for so but and people say you know what you guys you do this I all the time and you bring your own if you create your own hardware and by you really doing this professionally we tell you yes we are professionals and the and finally they can't all sponsors and to take the crew was the guy that did all the planning and could today and he did with that does the work and to everyone who made this possible thank you so much that that when she is on a questions here the yes there somewhere started the 1343 every community would like to thank you worry much for making available to participate in the cars experience and they would like to know more about the hardware and software and the vendors that you use for transcoding but so in general we use the friends so so we use donated where the reuse of and this if they you know the the the small a know machines that really come in handy because they're really compact and and you can easily bring them to the events but we also have some it's it's it's usually just standard hardware because everything we build we built to work but essentially s on on all platforms so we're quite flexible there I mean and what most of this so most of the the stuff that actually encodes this of of impact yeah the right the non-aggression the so from the web yes the question is about this slide stream is that about or is it intentional that is such local this this year but of it with the it is in in a way of on purpose because it's also way to but to allow people with you know less that would be great network connectivity from to actually participate that said we had trying and to make sure that the slides have all of a sudden 1 of quality of it in and that's of course a trade-off but if you have specific you know commons of final summary nicely so we can talk this through have OK thank you is another question we thank you very much for a diesel review we still have to part of the assembly to do not as 1st that the
police to the audience if you wanna leave to Adam please leave that side and the other one's tried to leave that way because it will be Crowley off this lecture um in automatic here there is a call you know we have to tear down waiting for us still to go unit is not lost lost bit but we have to help so there's a call for and angels to do and help in this dear down to be sure that is all ends successfully good yes that walls were just go along the assembly the new knowledge the again actually it's not working here this is my problem number here we
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picture a K thank you very much thank you everybody out for this a massive and creates a day over to the next step and
that's about the isolation that titles but which is just taking what a spoken and then turning it into words that are displayed on-screen it's not translating and just taking the original language and putting that into words so right you might have noticed that this year we didn't have any left subtitles because we just didn't have the time to organize that and so we focused on on what we think is a bit more important than the others having subtitle releases for the talk and
what some this graph shows the number of seconds some of talks and blue and then in various stages of subtitles that have been developed during this Congress saw in green are complete of subtitles and then you have the yellow ones which are at some stage of quality control we have the orange once the subtitles currently being time to so we already have a complete transcript of the part but we still adjusting the timing of when to display which subtitle and then we all the love of self the red subtitles status transcripts being written not being corrected so we're starting from from transcripts generated from machine all the recognition techniques and some of those so usually missing punctuation and also contain mistakes that people have to go through that and basically check that everything matches was being set
in numbers we have had over 100 angels working on subtitles throughout the scum rose for from a total of 310 4 to 6 hours producing um at the point when we wrote the slides 79 hours of material so that's about 4 . 2 hours of work for every hour of material that gets released which is about the speed difference between spoken words and that the text and so earlier today when we wrote the slide we had 16 sub totals released for this Congress of some it should be about 20 right now and and it's still going on so more to come and because there weren't any recordings awaitable fold most of the 1 we just took subtitles as so talks from from last year and what the subtitle those sold but also got a stem subtitles for earlier talks and then we will have some about 64 hours of other of material and various stages of of being program process so referred transcribed talks 22 hours being timed and 12 hours been checked which probably is also already change because people are still working on that and what so 1 of the benefits of of having finished substances that he can do funny stuff so for example you get statistics for the speed at which people talk and what words they use the most this is 1 talk from from last year I'm not quite sure which 1 and so it's about people and bias and language and examples not quite sure yet and while so that's about 800 strokes per minute which is not 1 of the fossils talks we had but it's still a lot faster than what most people type we and if you want to help make Congress accessible for everyone then to but and what you can also start writing subtitles with us that's something you can do the whole year not just Congress just go to a website and you find instructions on how to do that and you can follow us on Twitter you can come to our as he chatroom a offer follow the the a Saudi releases account to just see 1 News subtitles get released thank you other than that it use this so are there any questions is in the so yeah look what the 1 on the internet that that that that that is not something that everyone yes might to where can you find the subplot right so the the subtitle surrounding ensembling um it's
well Maroš thoughts on the adults suffer got the and then somewhere some scissors CE and Congress and 34 C 3 and then all know what they're signed at the top of the if pointing up will the this in a form not right yet now yes yes under a see-through subtitle from yes if but if all C 3 so those currently all the subtitles
available this yeah 1 of the questions so someone with put the flown but given we have to get to the next thing is in these electrolytes yes yes so thank you very much a given an applause as loud as you can see we have the power to race and so the data and that is
if you think you know it the think but back the
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Metadaten

Formale Metadaten

Titel 34C3 Infrastructure Review
Untertitel How does the CCC run a conference?
Serientitel 34th Chaos Communication Congress
Autor John, Leon
Lizenz CC-Namensnennung 4.0 International:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
DOI 10.5446/34804
Herausgeber Chaos Computer Club e.V.
Erscheinungsjahr 2017
Sprache Englisch

Inhaltliche Metadaten

Fachgebiet Informatik
Abstract In this traditional lecture, various teams provide an inside look at how this Congress‘ infrastructure was planned and built. You’ll learn what worked and what went wrong, and some of the talks may even contain facts! Also, the NOC promises to try and not have the network fail in the middle of the NOC presentation this time.
Schlagwörter CCC

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