GroupStudy.com GroupStudy.com - A virtual community of network engineers
 Home  BookStore  StudyNotes  Links  Archives  StudyRooms  HelpWanted  Discounts  Login
Re: Multicast lab question posted 03/22/2006
[Chronological Index] [Thread Index] [Top] [Date Prev][Date Next] [Thread Prev][Thread Next]


but that still requires some R4 configuration -  to enable directed
broadcasts...
I think some parts of the puzzle are missing :))

2006/3/22, Chris Lewis <chrlewiscsco@xxxxxxxxx>:
>
> NAT would appear to be a solution, meaning translate the multicast address
> on R2 to the subnet broadcast address of VLAN 70 (assuming R4 allows
> directed broadcasts).
>
> Chris
>
>
> On 3/22/06, Petr Lapukhov <petrsoft@xxxxxxxxx> wrote:
> >
> > Hmm.. nothing besides ip igmp static group comes into mind, but that
> > won't
> > work
> > too :)
> >
> > Maybe some more details on topology, probably we can link VLAN70 to R2
> > some other way...
> >
> > 2006/3/22, Schulz, Dave <DSchulz@xxxxxxxxxxxxxx>:
> > >
> > >  Sorry, that is all the details that I have on this one.  The only
> > thing
> > > that I came up with is to enable pim on the interface that is facing
> > the R4
> > > router.  This will at least allow you to ping the multicast group from
> > the
> > > R4 router.  You cannot ping the multicast group without this.
> > >
> > >
> > >
> > >
> > >
> > > Dave Schulz,
> > >
> > > Email: dschulz@xxxxxxxxxxxxxx <dschulz@xxxxxxxxxxxxxx%20>
> > >
> > >
> > >  ------------------------------
> > >
> > > *From:* Petr Lapukhov [mailto:petrsoft@xxxxxxxxx]
> > > *Sent:* Wednesday, March 22, 2006 1:47 AM
> > > *To:* Schulz, Dave
> > > *Cc:* ccielab@xxxxxxxxxxxxxx
> > > *Subject:* Re: Multicast lab question
> > >
> > >
> > >
> > > Hello Dave,
> > >
> > > Interesting question, can you provide more scenario detail?
> > >
> > > I thought of MVR at first , but configuring just R2 prohibts
> > > this idea.. Second idea was stub multicats routing, but
> > > that requires some more configuration, above just touching R2..
> > >
> > > TIA
> > > Petr
> > >
> > > 2006/3/22, Schulz, Dave < DSchulz@xxxxxxxxxxxxxx >:
> > >
> > > Group -
> > >
> > > If I have a multicast group that is running in sparse-mode with 3
> > > routers and a static RP.....R1, R2 and R3. I have a loopback on R3
> > that
> > > has a igmp join to 225.5.5.5. And, everything is working good and can
> > > ping the group from all routers, and everyone is happy.  However, the
> > > next requirement is to have a router R4 attached to R2 that does not
> > > have multicast enabled, but allowing users on VLAN70 to reach this
> > > multicast group.  And, you have to configure this on R2, not R4.  Any
> > > thoughts?
> > >
> > > R1---------------R2(RP)------------------R3
> > >                     | s0
> > >                     \
> > >                      R4........VLAN70
> > >
> > >
> > >
> > > Dave Schulz,
> > > Email: dschulz@xxxxxxxxxxxxxx <mailto:dschulz@xxxxxxxxxxxxxx >
> > >
> > >
> > _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html