From: L. Jankok (ljankok@gmail.com)
Date: Wed Nov 12 2008 - 07:29:53 ARST
Hi Mark,
To my understanding a multicast path is created manually by enabling certain
interfaces on
certain l3 devices.
The RPF check depends on your multicast type; (S,G) or (*,G).
In (*,G) the rpf check will be against the IP address of the RP
In (S,G) (Dense Mode) the rpf check will be against the IP address of the
Source (Client).
With practice you will know immediately if you have an rpf failure or not
because you know
how your l3 is routing and you know the multicast path you have created
manually.
I am also close to my lab date. What I am doing now is going back to do tech
labs for
every technology part I feel weak on.
Regards,
Lucio Jankok
2008/11/12 Mark Stephanus Chandra <mark.chandra@gmail.com>
> guys,
>
>
>
> My real lab just in a couple of weeks forward and I still don't know how to
> verify when I have to us ip mroute static for multicast or not.
>
>
>
> How can I debug when there is an rpf failure ? How to verify it ?
>
>
>
> The mroute static is used for the source to the client only right ? For
> multicast we just have to concern about the route from source to client,
> not
> client to source ?
>
>
>
> And when to test a multicast source connection with a command interfce ip
> igmp join group, is that interface have to be a part of the mulcticast
> mode
> (sparse-mode, dense-mode, sparse-dense mode)?
>
>
>
> Please correct me if I'm wrong
>
>
>
> Thanks a lot guys
>
>
>
> Regards
>
>
>
> Mark Stephanus Chandra
> IT Consultant
>
>
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