From: Toh Soon, Lim (tohsoon28@gmail.com)
Date: Wed Aug 22 2007 - 15:17:35 ART
Hi Sadiq,
AFAIK, 224.0.1.40 is the reserved Cisco-RP-Discovery address. It is the
address to which the Auto-RP mapping agent sends the list of group-to-RP
mappings in RP-Discovery messages to the PIM-SM domain. All PIM-SM routers
listen for this address.
Can anyone provide a more detailed explanation, especially why this mroute
entry is rooted at the static RP that we define?
Thank you.
B.Rgds,
Lim TS
On 8/22/07, Sadiq Yakasai <sadiqtanko@gmail.com> wrote:
>
> Hi guys,
>
> Please can someone clarify a confusion I have got here.
>
> I configured a static RP entry for a mcast network, and I am seeing
> the RP to groups mapping information through out the MCast network. Is
> this normal behaviour please?
>
> I was expecting not to see this since I am not using any auto group to
> RP mapping, nor using a mapping agent to dissiminate the RP
> information throughout the MCast routing domain.
>
> here is an excerp from my config please:
>
>
> (*, 228.28.28.28), 00:09:59/00:02:11, RP 150.1.2.2, flags: SJCL
> Incoming interface: GigabitEthernet0/1, RPF nbr 132.1.17.1
> Outgoing interface list:
> Vlan783, Forward/Sparse, 00:09:59/00:02:11
>
> (*, 224.0.1.40), 00:09:59/00:02:30, RP 150.1.2.2, flags: SJPCL
> Incoming interface: GigabitEthernet0/1, RPF nbr 132.1.17.1
> Outgoing interface list: Null
>
> SW1#sh run | i pim
> ip pim sparse-mode
> ip pim sparse-mode
> ip pim rp-address 150.1.2.2
>
>
> Any comments wld b appreciated please.
>
> Thanks
>
> Sadiq
>
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