Why pim dm-fallback ???

What is the exact difference between using the following
!1
Router(config)#no ip pim dm-fallback
Router(config-if)#ip pim sparse-dense-mode
--------------------------------------------
--------------------------------------------
!2
Router(config-if)#ip pim sparse-mode

I really could not find any difference and cannot understand the logic of cisco
behind having this command "no ip pim dm-fallback"

I would really appreciate your feedback!

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Received on Mon May 04 2009 - 10:41:32 ART