[AG-TECH] unicast + multicast

[artrimino at us.es]

Hi.

We do not already have our own bridge. We are using one of the Suggested 
Regional Unicast Bridges (UVIGO). We did not set it up, so I could not 
really answer those questions.

Thanks for your reply

-----------------------------------------
Ángel Rincón Trimiño.
Servicio de Informática y Comunicaciones.
Universidad de Sevilla.
Edificio Rojo.
Despacho 1.26.
Avenida Reina Mercedes s/n.
Tfn: 954559991.
E-mail: artrimino at us.es.


El 21/10/10 13:34, Andrew Rowley escribió:
> Hi,
>
> My immediate thought would be that the machine hosting the unicast bridge is at fault.  This could suggest a (admittedly poorly designed) firewall operating on the machine so that the multicast traffic is being blocked (although the block appears to happen at some point into the meeting).  Can you tell me:
> 1) What OS is the unicast bridge running on?
> 2) Is the unicast bridge a standard AGTk bridge server?
> 3) Is there a firewall on the unicast bridge machine?
>
> Andrew :)
>
>
> ---------------------------------------------------------
>
>     Andrew G D Rowley
>     Senior Development Officer
>
>     Research Computing Services
>     The University of Manchester
>     Devonshire House, Oxford Road
>     Manchester, M13 9PL
>
>     t :  +44 (0) 161 275 0685
>     e :  Andrew.Rowley at manchester.ac.uk
>     w :  www.manchester.ac.uk/researchcomputing
>
> ---------------------------------------------------------
>
>
>    
>> -----Original Message-----
>> From: ag-tech-bounces at lists.mcs.anl.gov [mailto:ag-tech-
>> bounces at lists.mcs.anl.gov] On Behalf Of artrimino at us.es
>> Sent: 21 October 2010 11:52
>> To: AG-TECH
>> Subject: [AG-TECH] unicast + multicast
>>
>> Hi everyone.
>>
>> At the University of Seville, we're having AccessGrid meetings with
>> some
>> other Spanish Universities. Some of them have multicast capabilities,
>> some others don't. The session seems to work fine until, at some
>> particular moment, those participants using a unicast bridge are not
>> able to see nor hear those using multicast.  Two perfectly isolated
>> groups (connected to the same venue) are created.
>>
>> Any suggestions?
>>
>> --
>> -----------------------------------------
>> Ángel Rincón Trimiño.
>> Servicio de Informática y Comunicaciones.
>> Universidad de Sevilla.
>> Edificio Rojo.
>> Despacho 1.26.
>> Avenida Reina Mercedes s/n.
>> Tfn: 954559991.
>> E-mail: artrimino at us.es.
>>      
>
>