Re: Multicast within a tunnel

[Gerry Hilton <gerry.hilton@xxxxxxxxxx>]

Hi.  To clarify what was meant by the physical interfaces, the ones that 
are used by the tunnel.  In this case it would be s0.256 on r2 and fa0 
on r7.

r2 s0.256------r5------3550 ----- fa0 r7

"Plain" multicast (without a tunnel) works in this setup.

Thanks,
 Gerry

Gerry Hilton wrote:

> Hi.  When tunnelling multicast through a tunnel, does ip pim 
> sparse-dense-mode have to be configured on the physical interfaces 
> also? The following passes with mrm, but router7 doesn't show an rp 
> mapping.
>
> Thanks.
>   Gerry
>
> router2:
>
> interface Tunnel27
> ip address 17.17.17.2 255.255.255.0
> ip pim sparse-dense-mode
> ip mrm test-sender
> tunnel source 200.0.0.2
> tunnel destination 200.0.0.7
> end
>
> router7:
>
> interface Tunnel17
> ip address 17.17.17.7 255.255.255.0
> ip pim sparse-dense-mode
> ip mrm test-receiver
> tunnel source 200.0.0.7
> tunnel destination 200.0.0.2
> end
>
>
> router7-1750-2#sh ip pim rp map
> PIM Group-to-RP Mappings
>
> router7-1750-2#