From: Chris Lewis (chrlewiscsco@yahoo.com)
Date: Wed Nov 02 2005 - 15:57:27 GMT-3
I do not believe R2 and R3 will form adjacencies without further configuration, either another DLCI between them, a tunnel or something like that. The multicast packets will not make it fomr spoe to spoke
Chris
simon hart <simon@harttel.com> wrote:
I guess this is slightly off-topic, but it got me thinking.
The reason Auto-rp will not work from a spoke configured as mapping agent is
that a multicast packet will not exit the same interface it entered,
therefore 224.0.1.39 and .40 do not get propogated correctly.
Now if I have a partial mesh frame network
R1
/ \
/ \
R2 R3
On R2 and R3 I have map statements to both R1 and each other with the
broadcast command on each statement. I then configure each interface as ip
ospf network broadcast - the correct adjacencies would form in the same
fashion as that what would happen in a true broadcast network (aka
ethernet).
So R2 will be sending ospf hello's etc to R3 and R1 with the mcast address
of 224.0.0.5 I assume then that the ospf mcast will be sent out of the
interface it is recieved on, breaking the normal Mcast rule.
Any comments?
Simon
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Scott
Morris
Sent: 02 November 2005 02:59
To: 'Michael Brooks'; ccielab@groupstudy.com
Subject: RE: Does PIM dense mode or sparse-dense mode work over frame relay?
Ok, so they have pictures and I didn't. :)
Thanks! I was looking for that before, but didn't find it in a timely
fashion!
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Michael Brooks
Sent: Tuesday, November 01, 2005 9:52 PM
To: ccielab@groupstudy.com
Subject: Re: Does PIM dense mode or sparse-dense mode work over frame relay?
This explains it also:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/mcst_sol/frm_rlay.
h
tm#69070
Regards,
Mike
On 11/1/05, Scott Morris wrote:
>
> Actually, it's a very good reference book all around. But you're
> right, it's just for multicast. If you aren't ever going to run
> multicast in real-life, you probably don't care! :)
>
> On the other hand, Amazon.com offers it used as
> well to save money!
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of dusth@comcast.net
> Sent: Tuesday, November 01, 2005 9:37 PM
> To: test; ccielab@groupstudy.com
> Subject: Re: Does PIM dense mode or sparse-dense mode work over frame
> relay?
>
> Sound like the millionaire talking here:). spent $50.00 just for one
> question topic:) I'm not Mr. Bill Gate.
>
> -------------- Original message --------------
>
> > The Williamson multicast book around page 464 really provided that
> > 'ah-ha' moment for me about the subject.
> >
> > Ben
> >
> > cciein2006@yahoo.com wrote:
> >
> > >Does PIM dense mode or sparse-dense mode work over frame relay? I
> > >tried the ip
> > pim nbma-mode command on a multipoint frame-relay interface but it
> > generates an error message saying that PIM nbma-mode is not
> > recommended for dense mode or sparse-dense mode?
> > >
> > >Why is this?
> > >
> > >___________________________________________________________________
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