Re: Multicast Issue!

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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