From: Adrian Chew (achew@xxxxxxxxxx)
Date: Fri Jan 26 2001 - 20:35:58 GMT-3
Daniel,
I believe Auto RP requires sparse-dense-mode. Also while the RP can be
anywhere on the network, the mapping agent has to be in the hub for it to
work. Also ip pim nbma-mode should be configured on the hub.
I'm not expert by any means on multicast - but the Cisco IP multicast book
has all the details you need.
Regards,
Adrian
----- Original Message -----
From: "Daniel M. Dawson" <dandawson@lucent.com>
To: <ccielab@groupstudy.com>
Sent: Friday, January 26, 2001 12:45 PM
Subject: A question about PIM in Sparese Mode
>
> 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
>
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:27:45 GMT-3