Re: ip vrf ... mdt data

The data MDT is an optimized MDT consisting of just the PEs requiring
participation in the associated multicast stream. It serves a good purpose
by reducing traffic going to non participating PEs. I agree with Rick. If
there's some language in the question referring to 'optimized' traffic
flows, saving core capacity, or a threshold is provided, then you'll want to
configure an MDT range. A threshold of 1 would probably be fine if one
isn't specified.

-Josh

On Mon, Apr 20, 2009 at 9:21 AM, Rick Mur <rick_at_rickmur.com> wrote:

> The 'mdt default' is enough to get all data you need in to the tunnel. If
> you want to do some loadbalancing on the multicast traffic you can set a
> threshold (kbps) and specify a range of multicast addresses to use so you
> can do all kinds of freaky things with :-)
>
> But for the CCIE lab, I wouldn't bother about the 'mdt data' command if
> it's not asked for. If they want you to configure it the question will be
> clear about it, something like: If multicast traffic gets over 100Kbps it
> should be sent to 239.0.1.0/24. Otherwise stick to the 'mdt default'.
>
>
> Rick Mur
> CCIE #21946 (R&S)
> CCNP, CCIP, JNCIA-ER, MCSE
> rick_at_rickmur.com
>
>
> On Mon, 20 Apr 2009 08:07:48 -0400
> Rich Collins <nilsi2002_at_gmail.com> wrote:
> Hello,
> I'm trying to understand the "mdt data.." with Multicast
> Distribution
> Tree setups.
> I've seen examples with just mdt default configured and some with the
> mdt data multicast group range defined additionally.
> What should indicate that mdt data should be defined and if not clear
> is it "over configuration" to define mdt data? If so is threshold 1
> a
> safe bet?
> Thanks
> Rich
> Blogs and organic groups at http://www.ccie.net
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Mon Apr 20 2009 - 09:43:42 ART