pinging multicast address (source is loopback) ??

OK. I'm doing some multicast labs with topology where I have 6 routers and
each router has loopback. After I'm done configuring mcast part I need to
check it with ping. When I issue ping command to mcast address my ping goes
out with loopback src address, instead with IP add of the interface where
the packet goes out. Why is that? When I specify src to be address of
physical int ping is successful. Otherwise ping is failed and in mroute
table I have entries like (loopback_add, mcast_add) ??
Thx.

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Received on Fri Oct 30 2009 - 14:40:41 ART