Subject: RE: (PIM-SM)when source and receiver are on same LAN

From: "Shekhar, Ravi" <[email-masked]>
Date: Tue, 12 Oct 1999 14:51:51 -0400

In this case, since A will already have an exisiting <S, G>SPT entry 
(with local intf as iif) due to source being active, when <*, G> join 
is triggered by A towards RP, <S, G>prune will be included along with 
it. And it will continue to be like this in all the subsequent regular 
updates as long as source is active.

- Ravi Shekhar.

> helmy writes:
> 
> | when the receiver joins the group, A will create *,G with 
> iif pointing
> | towards RP (i.e. A2) and oif pointing towards the LAN (i.e. 
> A1). However
> | since it has S,G and *,G with different iifs, it sends a 
> prune for S,G
> | towards the RP.
> 
> When does A detect that it has both <*,G> and <S,G> with 
> different IIF's.
> 
> I think ...
> 
> - Receiver1 joins G
> - A creates <*,G>
> - A propogates the <*,G> join towards the RP
> - Source sends traffic to A
> - A encapsulates data in a register and sends it to RP
> - RP decapsulates the packet and sends it to A
> - A detects that it is receiving packets on the <S,G> OIF,
>   then it sends a <S,G>prune towards the RP.
> 
> Ravi
>