[AG-TECH] Bridge Traffic

Lassi Ylikojola lapeyl at uwasa.fi
Thu Jun 28 17:05:54 CDT 2007

Hi !

Apologies since I think I'm to blame here. On monday we had a session
from Funet Finnish University network here in Seinäjoki to area near by
localtime 16:30 to around 20:00.

We used from funet four video streams and to funet one video + 32 khz
audio using westgrid. No hd/dv was present.

We tried our own bridge and eventually Yours because it was the only
one we could get connection.

And word taken. We will use other means to get connectivity next time
in case Our bridge fails.

I also have to consult Our network people about running the Bridge
here. Have to admit I have never thought about any costs.

> Quoting Todd Zimmerman <toddz at sfu.ca>:
>> Hey All,
>> Thought I'd bring up a subject that will become more and more of an  
>>   issue as we head towards HD/DV
>> video.
>> I got a report from the campus security administrator about an    
>> extremely high amount of traffic
>> to/from our WestGrid AG3 Bridge machine on Monday morning.  It was   
>>  about 4.5 GB in about a 4 hour
>> period.  While this amount of traffic is fine for any traffic going  
>>   over the research networks
>> (ca*net, Internet2, etc etc) - this traffic was routed over the    
>> commodity Internet to Finland.  The
>> problem is that unlike research network traffic, commodity Internet  
>>   traffic isn't free... so campus
>> network administrators usually will ask about high amounts of    
>> traffic routing to the general Internet.
>> I assume someone was testing DV and/or HD video and was using our    
>> bridge as the logs seem like
>> legitimate AG3 bridge usage.
>> We haven't formally decided as an organization if we will set up   
>> our  own bridge registry just for
>> WestGrid users etc or continue to offer a bridge to the greater AG   
>>  community.  I hope we will
>> continue offering the bridge for all use as I like the idea of    
>> having high quality bridging
>> available to all AG users; however, as traffic increases the   
>> demands  on the environment will change.
>> In general, I guess I am just asking the AG community to be aware   
>> of  what demands they are making on
>> the bridging systems. If you are connecting from the general    
>> Internet (not a university campus), the
>> bridge operator may be paying for this traffic.... and if you are    
>> using DV/HD, this is an _enormous_
>> amount of traffic.  Eventually the campus network admins will shut   
>>  us down ;-)
>> Just my 0.02
>> Todd
>> --
>> Collaboration & Visualization Technician
>> WestGrid - www.westgrid.ca
>> IRMACS - www.irmacs.com
>> Ph. 604.268.6979
>> Todd Zimmerman - toddz at sfu.ca

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