From: Jeremy (jeremy19@cox.net)
Date: Fri Jul 22 2005 - 11:54:39 GMT-3
I have the following setup: R3, R4, and R5 are connected to a frame-relay hub-and-spoke network with R3 as the hub, connected via physical interfaces. I have attempted a diagram below.
VLAN5-----[R5]--\
\
(F/R)---[R3]
/
VLAN47----[R4]--/
A previous requirement was for R3 to be the mapping agent for R6, which lies beyond R3. This pointed met to auto-rp, which requires sparse-dense mode for groups 224.0.1.39 and 224.0.1.40 in order to work (right?).
A later requirement stated that R5 starts receiving traffic destined for R4 (VLAN 47) and vice versa (R4 is receiving traffic for R5 or VLAN 5), and that this behavior needs to be fixed so that R4 only receives multicast traffic destined for VLAN 47 and R5 only receives multicast traffic destined for vlan 5.
The solution was to enable ip pim nbma mode on R3's serial interface.
My question is two-fold:
1) Is this configuration valid, and
2) If you run pim nbma mode (and consequently pim sparse mode), can you still use auto-rp, or are these two technologies mutually exclusive?!?
-Jeremy
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