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Re: Problems with 64bits platform

by Fernando Boronat Seguí :: Rate this Message:

Our problem appears when, in the 64-bit machine, we simulate multicast scenarios.

1. With PIM-DM protocol, when the source sends packets, all the nodes receive them, because Prune messages are sent very frequently (despite we have changed the prunetimeout variable to a large value). We have also checked that after a join-group action, no graft message is sent. So we conclude the management of the multicast groups is not running OK.

2. Now, we have also changed the multicast protocol to PIM-SM but it doesn't works in the 64-bit machine.

Any help is welcome.

Fernando Boronat Seguí escribió:

> I have only tested multicast examples with DM protocol, whit nodes
> joining and leaving the group. I think the control messages of the
> multicast protocol (prune) don't work well. I tried to change the period
> of sending prune messages and the animation doesn't take it into account.
>
> I tried to change it with this sentence and it doesn't work well.
> DM set PruneTimeout 200 (large number to avoid sending prunes).
>
> The nam animation shows a prune sent hundred of times per second and the
> joinings and leavings don't take effect. The nessages are broadcasted to
> all the nodes all the time.
>
> The same scenario in a simple PC with 32-bit ubuntu an a 32-bit
> processor works well
>
> Any help will be welcomed.
>
> Best regards
>
> qweq adcsad escribió:
>
>> Is this problem happening while you are running only multicast scenario or some specific scenario? Or it is happening in general?
>>
>>
>> --- On Mon, 7/6/09, Fernando Boronat Seguí <fboronat@...> wrote:
>>
>>
>>
>>> From: Fernando Boronat Seguí <fboronat@...>
>>> Subject: [ns] Problems with 64bits platform
>>> To: ns-users@...
>>> Date: Monday, July 6, 2009, 9:00 AM
>>>
>>> Hello,
>>>
>>> I am having problems whit multicast scenarios in ns-2.34
>>> installed in a
>>> doble intel quadcore machine.
>>>
>>> I hve tried it in Ubuntu and Red Hat linux distributions.
>>>
>>> The same scenarios works well in a 32bit platform.
>>>
>>> I anyone have had simlar problems I would really appreciate
>>> his/her help.
>>>
>>>
>>>
>>> Best regards from Spain
>>>
>
> ============================================================
> Dr. Fernando Boronat Seguí
> Dept. Comunicaciones Tlf.-+34+962 849 300 Ext.-49341
> Tlf. directo -+34+962 849 341 Fax.-+34+962 849 309 (Compartido)
> UNIVERSIDAD POLITÉCNICA DE VALENCIA-Esc. Politécnica Superior de Gandia
> Calle Pararaninfo, 1, CP. 46730, Grao de Gandia (Valencia), SPAIN
> ============================================================
>
>
>

--

Saludos.

============================================================
Dr. Fernando Boronat Seguí
Dept. Comunicaciones Tlf.-+34+962 849 300 Ext.-49341
Tlf. directo -+34+962 849 341 Fax.-+34+962 849 309 (Compartido)
UNIVERSIDAD POLITÉCNICA DE VALENCIA-Esc. Politécnica Superior de Gandia
Calle Pararaninfo, 1, CP. 46730, Grao de Gandia (Valencia), SPAIN
============================================================

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