From: Daniel M. Dawson (dandawson@xxxxxxxxxx)
Date: Fri Jan 26 2001 - 14:45:21 GMT-3
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 - 10:27:44 GMT-3