From: Daniel Valle (danielfrvalle@gmail.com)
Date: Sat Mar 29 2008 - 20:52:08 ART
I know this has been over and over... but there are always new guys
around.... so here it is again...
I need your expertise . I am labbing up a Hub and spoke scenario.
R2 is the MA and is also the RP for the mcast groups
R1 and R3 are Spokes
R3 f0/0 is set to ip igmp join-group 224.3.3.3
I'm running ospf in all networks.... all is area 0 ( very simple!)
this is the isse I'm facig. If I set the FR network as OSPF network
point-to-multipoint the R1 ( spoke) pings 224.3.3.3 just fine, if I set the
network to the default ( non broadcast), it does not work.
In one network type, or in the other, all unicasts pings works fine...
with few investigation I saw that when My topology is set to non-broadcast,
the mcast group gets "P"runned with 3 packets or less.... If the network is
set to P2M, the ping works fine, the network does not get prunned and the
"T" flag is set.
I know P2M modifies the nex-hop value of the routes, but I know know what
else could that make in order to make my topology not to work., I really
don't knwo how that come... the pings stops because the network get's all
prunned... not because of RF failure...actually neigher scenarios I face RPF
problems.
Thank you !!
Daniel.
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