RE: ip multicast

From: Fosket, William (William.Fosket@compass.net)
Date: Wed Dec 13 2006 - 13:50:10 ART


It depends on what "safe" is. Are you safe by assuring that multicasts are
always available or are you safe by assuring that you don't have all of your
multicast sources flooding all of your links?

Good Luck,

Bill Fosket, CCIE 16041

-----Original Message-----
From: nobody@groupstudy.com on behalf of Abderrahim sadki
Sent: Wed 12/13/2006 9:25 AM
To: ali.mehdi@atosorigin-me.com; gabriel.nunes@gmail.com
Cc: ccielab@groupstudy.com
Subject: RE: ip multicast

ok in that case why use sparse-mode...?

Shouldnt I use sparse-dense mode just to be on the safe side?

  --------------------------------------------------------------------

  From: "Ali Sheeraz Mehdi" <ali.mehdi@atosorigin-me.com>
  Reply-To: <ali.mehdi@atosorigin-me.com>
  To: "'Gabriel Nunes'" <gabriel.nunes@gmail.com>, "'Abderrahim
  sadki'" <a_sadki1@hotmail.com>
  CC: <ccielab@groupstudy.com>
  Subject: RE: ip multicast
  Date: Wed, 13 Dec 2006 18:22:19 +0400
>You will need to use 224.0.1.39 and 224.0.1.40 for Auto-RP, either
  use ip
>pim sparse with ip pim autorp listener or you can use
  sparse-dense-mode, but
>if it is stub host even ip pim sparse in enough as it can pick the
  multicast
>packets from the segment.
>
>The reason why you need ip pim sparse-dense is due to the fact that
  Auto-RP
>announce and discovery groups (224.0.1.39 and 224.0.1.40) use dense
  mode in
>all conditions.
>
>Hope this clears!
>
>Regards
>Ali
>
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
  Of
>Gabriel Nunes
>Sent: Wednesday, December 13, 2006 5:51 PM
>To: Abderrahim sadki
>Cc: ccielab@groupstudy.com
>Subject: Re: ip multicast
>
>It depends of where you need to configure the mapping agent.
>
>If your mapping agent is configured on the RP you can use
  sparse-mode. In
>case you need to configure the mapping agent in another router you
  need to
>configure sparse-dense mode because you will need to use the
  224.0.0.40. (or
>.39, I`m not sure now...)
>
>I`m not able to explain deeper than this now...
>
>Please someone confirm for me... :-)
>
>
>On 12/13/06, Abderrahim sadki <a_sadki1@hotmail.com> wrote:
> >
> > Hi,
> >
> > How can I know f I need to use sparse-dense mode or sparse mode
  only??
> >
> > Knowing that I will have to configure autp-rp.
> >
> > Thanks
> >
> >
  --------------------------------------------------------------------
> >
> > From: Ivan <ivan@iip.net>
> > Reply-To: Ivan <ivan@iip.net>
> > To: ccielab@groupstudy.com, JB <jellyboy@gmail.com>
> > Subject: Re: As-path Q ^ and _
> > Date: Wed, 13 Dec 2006 12:02:37 +0300
> > >^100$ - it is your direct peer
> > >_100$ - prefix originated in AS100
> > >
> > > > Hi Group, I am wanting to know the difference between the
> > following 2
> > > > expressions. I have included what I think are the correct
> > > > interpretations. Please expand upon if I am incorrect....
> > > >
> > > >
> > > > ^100$ routes that originated in AS100 only (and that is the
  only
> > AS)
> > > > _100$ routes that originated in AS100 (and there may be other
> > ASes
> > > > prepended to this)
> > > >
> > > > I have had a play on looking glass and those were my
> > conclusions....
> > > >
> > > >
> > > > TIA,
> > > >
> > > > JB
> > > >
> > > >
> >
  _______________________________________________________________________
> > > > Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >--
> > >Ivan
> > >
> >
>_______________________________________________________________________
> > >Subscription information may be found at:
> > >http://www.groupstudy.com/list/CCIELab.html
> >
> >
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  _______________________________________________________________________
> > Subscription information may be found at:
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>
>_______________________________________________________________________
>Subscription information may be found at:
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>

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