RE: Joining Multicast Networks of differeing Types

From: Joseph Brunner (joe@affirmedsystems.com)
Date: Tue Feb 12 2008 - 12:01:30 ARST

I would think your goal should only be to run the sparse mode network long
enough to get to the where the dense mode network joins... and you can get
there via a static join...

Once at the dense mode network, simply have joins at all the client lan
sender interfaces, to again bring the feed along... you can just keep
bringing it everywhere you want with static joins... which pim will be more
than obliged to keep joining rpf decided paths back to the sparse mode/dense
mode router.

What do you think?

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
graham@cisco-engineer.com
Sent: Tuesday, February 12, 2008 3:35 AM
To: 'Graham Clarke'; 'Cisco certification'
Subject: RE: Joining Multicast Networks of differeing Types

No bites on this one ;). Is it possible to use a DVMRP implementation to act
as a conversion?

From what I gather on a cisco router DVMRP can't be enabled, you have to
enable PIM then it senses a DVMRP network and falls back. Will a DVMRP
tunnel between two cisco routers using different pim methods fall back to
DVMRP?

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Graham Clarke
Sent: 11 February 2008 11:43
To: Cisco certification
Subject: OT: Joining Multicast Networks of differeing Types

Hello group,

I have a question about joining differing multicast networks together. Is
there some method to for example join a PIM-DM to a PIM-SM network, ie have
a router terminate a stream and re-stream it (or convert it).

And no using the pim-spare-dense mode command isnt going to cut it! there
are Firewalls which only allow SM and GRE tunneling through them is not an
option.

So picture the scenario - Network A is exlcusively Sparse-mode with
statically defined RPs, Network B is a dense mode network, A user on Network
A wants to join a feed on Network B, Network B is outside Network A
configuration control. Can this realistically be achieved? 

-- 
Thanks

Graham Clarke

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