From: Kevin Baumgartner (kbaumgar@xxxxxxxxx)
Date: Fri Jan 26 2001 - 15:26:44 GMT-3
This is exactly the same problem I was working on last night. And I had exactly
the same problem that you are having. And still searching for a answer.
Like you
I tried "IP PIM NBMA-Mode" on the hub and it didn't help. I am pretty sure if
point-to-point links are done between the hub and spokes it will work.
So at this point without using point-to-point subinterfaces I am not sure
what
the answer is.
Kevin
At 11:45 AM 1/26/01 -0600, Daniel M. Dawson wrote:
>I have set up the following PIM sparse mode config.
>
> ptp serial Eth Frame Frame
> Serial Serial
> spoke hub spoke
> <R1> ------------ <R2> -------- <R3> ------------ <R4> --------- <R5>
> RP RP
> Announce Discovery
>(all groups) (all groups)
>
>All interfaces are ip pim sparse-mode
>
>In this configuration R3 receives the RP discovery packets from R2 and puts
>an PIM RP mapping to the rp on R1. However R3 does not forward the RP
>discovery announcements out its framerelay serial interface to R4 and so R4
>and R5 do not ever get the Auto RP mapping. In this situation R4 and R5 are
>essentially out of the PIM reachability and none of their joined IGMP group
>interfaces can be ping'd from anywhere. If however I move the RP Discovery
>statement to R3. It then forwards the discovery packets out it's
>frame-relay serial interface to R4 who then forwards the discovery frames
>out the sub-interface to r5 and all routers discover the RP to group mapping
>and all joined igmp groups on all routers can be pinged from any other
>router.
>
>I have looked at the IP PIM NBMA-Mode command which has not helped any. I
>have debuged ip pim auto-rp and in the first situation R3 is not forwarding
>the RP-discovery messages out to R4 that are coming from R2.
>
>Does anyone have any idea what is wrong with the situation.
>
>Thanks
>
>
>Daniel M. Dawson
>E-mail: dandawson@lucent.com
>
>
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