[AG-TECH] Multicast beacon questions

[Satish Devarapalli]

small correction in my previous mail..

" how to add myself in to the multicast group without logging in to the
Virtual Venues."


Has anyone tried this tool ?

-Satish

-- Original Message --

>
>hi,
>
>There is a similar tool at
>
>http://www.web3d.org/WorkingGroups/vrtp/rtpMonitor/
>
>-presents global session statistics, individual stream statistics and feedbacks
>from all participants;
>
>- records the statistics in text files, continuously, in intervals defined
>by the user;
>
>the statistics recorded might be useful for debugging problems and improving
>QoS.
>
>I tried running on my Win2K box, but i get some errors
>
>with out logging in to the VirtualVenues i tried running this and i get
>an error message "Cannot bind requested address",
>
>after logging in i get "cannot bind:requested address in use"
>
>i tried to trace the problem, this message is coming from RtpMonitor code,
> but couldnt figure out the exact cause for this exception.
>
>can some one tell me what is going on when i log in to the virtual venues.
>my understanding is that i will be added to the multicast group address
>to which the venue is bound, **but how is this done exactly**. i mean are
>my credentials or ipaddress is used to add me in to the multicast group.
>becoz, the error message "Cannot bind requested address" indicates me some
>security problem or that i am not added in the multicast group. how to
add
>myself in to the multicast group without logging in to the multicast group
>so that i can run my rtpMonitor.
>
>Any pointers please ??
>
>BTW, my network is enabled for Multicast and i am receiving the multicast
>traffic.
>
>Thanks
>Satish Devarapalli
>Illinois Institute of Technology
>
>
>-- Original Message --
>
>>
>>hey,
>>
>>a pointer that might be helpful is:
>>
>>http://www-mice.cs.ucl.ac.uk/multimedia/software/rqm/
>>
>>it's a rtp/rtcp based monitor of a group.  This would be pointed *at*
the
>>audio or video group and tell you information on that group.  I believe
>>the
>>statistics are less network based and more application based, but that
>might
>>not be a bad thing.
>>
>>It's probably not a replacement for the beacon, but it might be another
>>level of information that's helpful and less taxing.
>>
>>--Ivan
>>
>>> -----Original Message-----
>>> From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov]On
>>> Behalf Of Chris Greenhalgh
>>> Sent: Friday, October 26, 2001 3:07 AM
>>> To: Tony Rimovsky
>>> Cc: ag-tech at mcs.anl.gov; Chris Greenhalgh
>>> Subject: Re: [AG-TECH] Multicast beacon questions
>>>
>>>
>>> > I understand your concern about beacon scalability.  We will be
>>> > examining mechanisms such as using RTP data in order to try to lower
>>> > the overhead of using the beacon in large communities.
>>>
>>> I gather there are at least three candidate mechanisms for RTCP
>>> aggregate bandwidth management (scaling each sender's rate so
>>> that the total of all senders is bounded; in RTP/RTCP this is to some
>>> fraction of the total data traffic). This would seem an obvious place
>>to
>>> look, as long as noone is relying on '10pps' as a magic number
>>>
>>> Chris Greenhalgh
>>>
>>>
>>
>>
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