RE: Multicast Issue!

Bryan,
    I changed from dense to sparse-mode with pim nbma-mode on the hub (R1),
and R2 is still unable to ping 224.25.25.25.

Mike

> Date: Thu, 16 Apr 2009 22:08:02 -0600
> Subject: Re: Multicast Issue!
> From: bbartik_at_ipexpert.com
> To: ccie1q2008_at_hotmail.com
> CC: ccielab_at_groupstudy.com
>
> Mike,
>
> The router will not send a multicast packet out of the same interface on
> which it was received. If you use sparse-mode you can use pim nbma-mode
> which allows the outgoing interface list to be populated by neighbor. You
> can also use p2p subinterfaces or some type of tunneling. Also, remember
> static mroutes will not populate the OIL, they only help in RPF checks.
>
>
> Bryan Bartik
> CCIE #23707, CCNP
> Sr. Support Engineer - IPexpert, Inc.
> URL: http://www.IPexpert.com
>
> On Thu, Apr 16, 2009 at 9:43 PM, mike jones <ccie1q2008_at_hotmail.com> wrote:
>
> > Group,
> > I have the following lab layer out:
> >
> >
> > Major network 157.1.0.0
> >
> >
> > R1 (hub)
> > 123.1 / \
> > / \
> > / \
> > .2 / FR \ .3 FastE
> > R2 R3---------R5
> > .35.3 .35.5
> >
> >
> > I am using Phy. interfaces on the Fr connection (I'm sending traffic for
> > the
> > spokes out the same dlci as for the HUB.)
> >
> > Ex. of R2 configure:
> >
> > frame-relay map ip 157.1.123.1 201 bro
> > frame-relay map ip 157.1.123.3 201
> >
> >
> > EIGRP is the IGP, and I have Split-horizon disabled on R1. I'm also
> > running
> > Dense mode on the the links, and i joined R5 to group 224.25.25.25.
> >
> >
> > So fairly sample set up, but I can't ping 224.25.25.25 from R2. And
debug
> > on
> > R1 with ping from R2 shows:
> >
> > s=157.1.123.2 d=224.25.25.25, mroute olist null
> >
> > I know the above debug outout mean that the packet is begin drop due to
no
> > outgoing interface was founded. I tried added static mroutes, but that
> > did
> > not work. I got it to work when I configred R1 with two sub-p-to-p
> > interfaces, but why is it not working with Phy interfaces on R1.
> >
> >
> >
> > Thanks!
> >
> >
> > Mike
> >
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Received on Fri Apr 17 2009 - 00:31:28 ART