[AG-USERS] ag-users Digest, Vol 13, Issue 1

[Aabhas Garg]

N. Satyanarayana,

Did you try to connect three way communication using "unicast" network ? may
be better use westgrid or ANL
Aabhas Garg
George Washington University



On Thu, Dec 23, 2010 at 1:00 PM, <ag-users-request at lists.mcs.anl.gov> wrote:

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>   1.  Unidirectional Multicast Problem - Accessgrid (N. Satyanarayana)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 23 Dec 2010 10:43:19 +0530 (IST)
> From: "N. Satyanarayana" <nanduris at cdac.in>
> Subject: [AG-USERS] Unidirectional Multicast Problem - Accessgrid
> To: <ag-users at lists.mcs.anl.gov>
> Message-ID: <twig.1293081199.64396 at cdac.in>
>
> Hi,
>
> We are trying to set up AG nodes across three different centres (located
> in 3 different cities) connected with multicast enabled network. We are
> not able to get two way communication among the participants from these 3
> centres. Our network provider is saying that there cannot be more than one
> Multicast Source sending for the same multicast group in the network, this
> is possible with SSM (Source Specific Multicast) only which require
> Application, Operating
> System, Network level support of IGMPv3. Network is able to support SSM.
>
> To my understanding while creating virtual venue in AG we can assign a
> single multicast group id with two ports to a venue for transmission of
> audio and video to different receivers.
>
> But with this kind of configuration we can support unidirectional
> multicast only. If we want receivers also to be able to communicate with
> each other i.e., if we want every one to be both sender as well as
> receiver, what kind of configuration changes are required at
> network/system/application level.
>
> Can you suggest how to proceed further in order to support two way
> communication among the participants of same venue session.
>
> Also, kindly specify the availability of IGMPv3 at Application & OS as
> well.
>
> Regards,
> Satya
> --
> N. Satyanarayana
> Centre for Development of Advanced Computing (C-DAC)
> No. 1, Shivbagh
> Ameerpet
> Hyderabad - 500 016
>
> (Off) +91-40-23737124/25
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-- 
Thanks and Regards,

Aabhas Garg
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