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The University Shouldn't Shape My Traffic Print E-mail

 

Mark Goldberg's blog, Telecom Trends, today featured a guest post by Queen's University student Alex Goldberg (relation?) about net neutrality on university campuses. The gist of the post is that some students are getting slow connections because other students are consuming bandwidth by downloading music and movies, and because capacity is limited, it's legit for the school to prioritize some types of content over others. Well I don't know whether Queen's actually does this or not, but I just found out that my school, the University of Ottawa, already shapes my traffic.

 

Interestingly, I learned about this fact earlier in the week while preparing for a course I teach about Digital Music. The course covers, among other things, the economic, legal, cultural and technological issues surrounding p2p downloading. Part of the pedagogy is to demonstrate how p2p works, in order to facilitate a more informed discussion of the topic. (Don't worry legal eagles: we just browse, we don't download. We're not breaking any laws and, more importantly, not consuming more than our fair share of capacity.) Turns out, though, that the in-class demo would've fallen flat. In my pre-class prep, I tried testing LimeWire, only to learn that I couldn't get much of a connection. It was simply too slow, so we couldn't do our little experiment effectively.

 

Some readers might realize that this seems to be Mr. Goldberg's point. That the solution to stave off frustration for students researching and writing term papers is to deprioritize p2p traffic. I guess my response is that it isn't easy to make these kinds of calls, and I certainly don't want my university network administrator, let alone a software program, making the tough decisions about what content I get fast access to and what I've got to wait for.

 

I wanted to use the p2p connection for pedagogical purposes. And while I admit I might be part of a freakish minority using p2p in this way, I can point to other problems caused by traffic shaping at universities. This week I'm teleconferencing the Digital Music course to students at the University of Puerto Rico. All of the video being piped back and forth between our schools is being recorded. These recordings will be archived and made available to students as torrents. Do my classes deserve to be deprioritized? More broadly, despite the fact that p2p is presently used mostly for sharing copyright-protected movies and music (which I don't condone, by the way), there are also many examples of legit p2p practices. And who knows how these technologies could potentially be used in the future? That is, only if they're not discriminated against.

 

I checked with my network people and was told that the distinctions made by the automated shaping software aren't exactly subtle, and the program isn't sophisticated enough to route me or my students around the roadblocks. Shaping traffic depends on sometimes inaccurate presumptions about the content being transmitted as well as subjective (or sometimes financially motivated) judgments about the relative importance of that content. While Mr. Goldberg suggests that prioritizing some types of content (i.e. academic materials, however that is defined) is especially appropriate on a university campus, I'd argue the exact opposite. Universities, even more than any other service providers, ought to be completely content agnostic. Campus networks, like classrooms, should be structured to maximize openness and encourage experimentation with new modes of sharing knowledge.

 

For now, though my network isn't neutral, at least it is comforting to know the network admins won't be weighing in on my tenure application.

 

UPDATE: There's a Globe story today highlighting how "Legit bittorrent users face traffic jam." The article points out that bittorrent is not only used for copyright infringement: "The service is also used by open-source software developers, university professors distributing class lectures and independent filmmakers looking for an audience for their films." Moreover, the article referenced a documentary called "On Piracy," which was made by a University of Ottawa student and is distributed via bittorrent. I'd like to consider recommending the film to my Digital Music students, but sadly, it is taking forever for me to download this from work. And even if I do assign the film, my students' homework is destined to be deprioritized.

 


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Comments (8)
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1. 29-11-2007 14:25
 
Thanks for the link Jeremy. Yes - Alex is my son. The idea behind traffic shaping isn't to halt p2p... it is to recognize that some applications (eg. voice, gaming) are very intolerant of latency, while others (eg. file downloading, some web browsing) can accommodate 250 msec delays with only annoyance - sure, we all want instant page appearance, but we tolerate delays on our browser or in a file transfer. Voice becomes unintelligible. 
 
Traffic shaping would permit this balance to be managed. Indeed, if you needed a clear p2p feed, the network admin could set up the tools to enable that as well - a normal function in providing differential QoS - without violating any net neutrality principles.
Guest
 
2. 29-11-2007 15:17
 
Mark Goldberg: In theory the prioritisation you describe shouldn't make it impossible to use P2P protocols to transfer data, I've found that in practice, sometimes "traffic shaping" means making the transfers slow enough to be useless.
Guest
 
Simon
3. 29-11-2007 18:42
 
"I guess my response is that it isn't easy to make these kinds of calls, and I certainly don't want my university network administrator, let alone a software program, making the tough decisions about what content I get fast access to and what I've got to wait for." 
 
I don't think it's an easy decision either, but the passive and "net-neutral" approach is a decision itself. 
 
Better that the decision be made by encouraging my administration work with IT Professionals than to choose to not choose. 
 
I would personally rather my school's administration determine which content comes faster. It is more difficult, but at least it's not anarchy. 
 
Alex 
 
P.S. When I submitted this post, I was disconnected from the wireless network and had to retype my response. :-/
Guest
 
Alex Goldberg
4. 30-11-2007 02:51
 
Jeremy seems to be labouring under the misconception that the key reason for deprioritizing p2p traffic is that it is largely infringing, and therefore doesn't deserve as high a priority. 
 
But you'd still have to do the same thing if it all were non-infringing material. By definition, p2p does not play nice. It expands to take as much bandwidth as possible, and so it crowds out everything else. 
 
That's the reason network administrators have shaped traffic, and always have. It's never been any kind of secret.
Guest
 
5. 30-11-2007 12:59
 
Please explain how P2P plays less nice than HTTP traffic. How does HTTP not also "expand to take as much bandwidth as possible"?
Guest
 
Aaron
6. 03-12-2007 15:57
 
I agree with Jeremy, I wouldn't like the university's network administrator to prioritize what downloads fast and what should I wait for. If that is the case due to the heavy volume and traffic, then a notice should be given in advance to all users for them to know what they can expect in their search and they can freely decide to use the network or go somewhere else.
Guest
 
7. 03-12-2007 15:42
 
I agree with Jeremy, I wouldn't like the university's network administrator to prioritize what downloads fast and what should I wait for. If that is the case due to the heavy volume and traffic, then a notice should be given in advance to all users for them to know what they can expect in their search and they can freely decide to use the network or go somewhere else.
Guest
 
8. 12-12-2007 19:56
 
Highly concurrent TCP streams with no backoff, Aaron. It's not exactly a controversial point. (Steve Bellovin summarizes it concisely here.
Guest
 

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Last Updated on Thursday, 29 November 2007
 

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I am an Associate Professor at the University of Ottawa's Faculty of Law. My expertise is in the area of technology and intellectual property law. Read more details or follow me on twitter.

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