From: Krucker, Louis (louis.krucker@xxxxxxxxxxx)
Date: Wed Aug 07 2002 - 15:19:39 GMT-3
Thanks for your mail, i was a bit "overloaded" yesterday
but in the meantime i put the correct addresses on it.
I already configure the lo 0 as sp-de mode otherwise you will an error
message.
Its a bit funny for me, two guys correct me cause i put the wrong
addresses on to the interface, thats fine but nobody can tell
me why i can ping my two multicast addresses from the RP but not
from R4 which is one hop behind the RP.
I ask a few guys but nowbody can give me a locically answer. I can
ask 5 guys and i get 5 different answers even from ccie's........
cheers
Louis
-----Original Message-----
From: CCIE FUN
To: Edmund Roche-Kelly; Krucker, Louis
Cc: 'ccielab@groupstudy.com'
Sent: 07.08.2002 20:09
Subject: Re: Multicast problem
First of all the multicast address range is from
224.0.0.0 through 239.255.255.255
second thing, once you correct the Multicast address,
make sure you have Multicast enabled on the LOOPback 0
of R1 with the command ip pim sparse-dense mode.
--- Edmund Roche-Kelly <edr9007@nyp.org> wrote:
> What makes you think 240.0.0.1 and 241.0.0.2 are
> multicast addresses?
>
>
> "Krucker, Louis" wrote:
> >
> > Hi folks
> >
> > I play around with a simple multicast lab and run
> in some troubles
> >
> > |-R2-------------R1---------------R4--|
> >
> > R2 is the multicast source, R1 is the mapping
> agent and R4 is connected
> > to multicast receivers. I use sparse-dense mode on
> all interfaces, R2 is the
> > RP.
> >
> > My idea was to simulate two multicast groups on R2
> which i can ping from
> > R4 to test it.
> >
> > On R2 i use ip igmp join-group 240.0.0.1
> > ip igmp join-group 241.0.0.2
> > and on the ethernet "ip pim send-rp-announce
> Loopback0 scope 10"
> > to announce the rp to the cloud.
> >
> > On R1 i have configure ip pim send-rp-discovery lo
> 0 scope 10 to
> > set up a mapping agent. On R4 i configured only
> multicast-routing and
> > sparse-dense mode on the interfaces which route
> multicast.
> >
> > The problem I can ping those groups from the MA
> but not from R4, does
> > somebody know where is the mistake ? IP routing is
> OK because i can ping
> > from R4 the ethernet interface where thos two
> sourced are connected.
> >
> > Thanks for help
> >
> > Louis
> >
>
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