Do you have a link to this whitepaper? I could probably
explain all of the information below, but I am curious at to
what this white paper says in detail, before I attempted to try
and explain it.
v/r,
Paul Werner
> Subject: PIM shared tree source tree
>
> this is taken from there white paper
>
> The following process describes the move from shared tree to
source tree
> in
> more detail:
> 1 Receiver joins a group; leaf Router C sends a Join message
toward RP.
> 2 RP puts link to Router C in its outgoing interface list.
> 3 Source sends data; Router A encapsulates data in Register
and sends it
> to
> RP.
> 4 RP forwards data down the shared tree to Router C and sends
a Join
> message
> toward Source. At
> this point, data may arrive twice at Router C, once
encapsulated and
> once
> natively.
> WHY WHY WHY ...it dosent` say why it will arrive
nativley.....GIT
>
> 5 When data arrives natively (unencapsulated) at RP, RP sends
a
> Register-Stop message to Router
> A.(i can understand that)
> 6 By default, reception of the first data packet prompts
Router C to
> send a
> Join message toward
> Source.
> 7 When Router C receives data on (S,G),(???????) it sends a
Prune
> message
> for Source up the shared tree.
> WHY WHY WHY !!!!?????
>
> 8 RP deletes the link to Router C from outgoing interface of
(S,G). RP
> triggers a Prune message
> toward Source.
> WHY WHY !!!!!
>
>
> AM I MISSING SOMETHING......SORRY IVE BEEN AT IT ALL DAY ...
> and my brain now hurts
>
> TIA
>
> steve
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