From: Oliver Grenham (ogrenham@optusnet.com.au)
Date: Sun Mar 20 2005 - 10:45:47 GMT-3
Hi Mani,
as far as Im aware it is possible to multicast over the topology you
describe when Ip Pim NBMA mode is used on the interface of the HUB. Try this
out and see!
Ollie.
----- Original Message -----
From: "mani poopal" <mani_ccie@yahoo.com>
To: <ccielab@groupstudy.com>
Sent: Sunday, March 20, 2005 10:09 AM
Subject: multicast over NBMA
> Hi Guys,
>
> Assume you have multicast over frame relay NBMA network where R1 is hub
and R2 and R3 are spokes. I joined the R2 e0 to multicast group
224.24.24.24(-if)#ip igmp join-group 224.24.24.24).
> My Question: I thought you cannot ping this address from other spoke(R3)
becase R1 hub will not send and receive multicast over same interface. My
assumption is we need GRE tunnel interface between both spokes to overcome
this situation, but to my surprise I was able to ping the 224.24.24.24 from
other spoke, R3. Any explanation is appreciated.
>
> thanks
>
> Mani
>
>
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