Multicast tunnel ques

From: GAURAV MADAN (gauravmadan1177@gmail.com)
Date: Sun Jan 18 2009 - 08:21:40 ARST

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Hi Group

Again a ques on tunneling while dealing with multicast ( asked many but
still question pops up from somewhere)

                                       R2
                                       / \
                                      / \
                                   R1 R3
                                    |
                                    |
                                   R4
                                    |
                                  R5
                                    |
                                    R6
                                      |f0/0

Every where i am running PIM dense mode
ON r6 f0/0 ; I have a join grp statement
R5 , R4 , R1 , R2 all able to ping the multicast grp .. expected R3 not able
to ping

Ques : I am using tunnel ..... I find both of following work

[A] tunn between R1 and R3
[B] tunn between R2 and R3 .

I have put tunnel in dense mode as well

I do have idea whats happening and how things are working .. Can someone
explain which solution is preferred over other in what situations ?

Gaurav Madan

Blogs and organic groups at http://www.ccie.net

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