Multicast issue

[Thomas Uram]

The problem is poor performance, primarily in audio, where we see 15-25% 
loss from ANL to NCSA.  I don't have a measurement of the loss in the 
other direction, but ANL is apparently not receiving audio from us reliably.

We are now at NCSA, the demo is at 6:00pm, but we really need things to 
be working well before then.

Caren Litvanyi wrote:

>Please describe the problems in some detail, particularly
>identifying the direction of the problem, and whether it is
>poor performance or lack of any video and/or audio.
>
>
>Is it NCSA->ANL that is broken, and ANL->NCSA is ok?  The other way around?
>No multicast is working at all?
>Is it audio, video, or both?
>Has it ever worked?
>Who were you working with on this at the NCSA end?
>
>I appreciate the identification of machines and groups, that was helpful.
>
>Thanks,
>Caren
>
>Caren Litvanyi 
>network engineer ANL-MCS/MREN/StarLight
>litvanyi at mcs.anl.gov
>o: 630-252-6094
>c: 720-839-7739
>
>On Thu, 1 May 2003, Thomas Uram wrote:
>
>  
>
>>We're having problems with multicast between these machines:
>>
>>porta-video
>>porta-display
>>
>>and this one:
>>
>>conf-wireless126-124.ncsa.uiuc.edu (141.142.126.124 )
>>
>>with the following mcast addresses:
>>
>>233.2.171.251 port 59986
>>233.2.171.251 port 59988
>>
>>And we're relying on this for a demo at NCSA today.  Please look into 
>>this and let us know status.
>>
>>Thanks,
>>
>>Tom
>>
>>
>>    
>>
>
>
>  
>

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