Auto RP with sparse mode and listner will fall in to dense mode

From: Cisco Net (network.cisco@gmail.com)
Date: Thu Nov 04 2004 - 00:05:37 GMT-3

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Hi
May be a stupid question. But i thought i better verify this.
Also I did not had the ip pim auto-rp listner command on my routers to
try this out.

Assuming that i have configured the following
1-multicast on all the routers
2-ip pim sparse mode on all the interface
3- enabled ip pim auto-rp listner on all the routers
4- One router say R3 is configured as RP (auto RP) for a specific
group 230.1.1.1
5- MA is already configured

Everything should work as expected...
Now if i have configured igmp-join for another group 225.5.5.5 on one
of the router.
Does the ping to this group will work ?

All routers will fall in to dense mode for this group even though
routers are configured for sparse only...

Will i see 224.0.1.40 and 224.0.1.39 in my mroute table ?
Thank you
Regards
Cert

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