From: Navin MS (navin_ms07@yahoo.com)
Date: Wed Feb 14 2007 - 00:48:13 ART
Hello Folks,
After staying low for sometime, I just picked up working for the Lab again. While doing one of the
IE Tech Lab exercises, I got confused on the Multicast RPF Failure Scenario. Can some plz help
3 routers R1, R5 and R6 connected via FastEth
Source----R1--------R5-------R6----Client
Except for the interface on R5 connecting to R1, ALL others are PIM dense-mode enabled. This
brings me to 2 important Qs.
(1) This may be silly, but is RPF check necessary for Dense-mode flooding too ?
(2) Since R1 floods the multicast feed regardless of whether R5 is interested or not, R5 is going
to receive the feed. Now, will the traffic be dropped at R5 or will R5 do an RPF check and flood
again ?
In short, if the incoming multicast interface is not PIM dense-mode enabled .. but if it still
receives multicast feed, will further flooding happen (assuming RPF check succeeds) ?
I don't have racktime to test it on .. Appreciate if anybody can help.
Thanks,
Naveen.
This archive was generated by hypermail 2.1.4 : Thu Mar 01 2007 - 07:38:46 ART