All things related to multicast

[Tom Pusateri <>]

That's the checksum in the PIM header of the register message,
not the dummy ip header following the PIM header.
You're confusing the headers.

Tom

In message 
<>
 you write:
>On Mon, May 19, 2003 at 12:06:32PM -0700, Tom Pusateri wrote:
>pusateri> The TTL of the dummy ip header is not significant. It gets set to 
>0 
>when
>pusateri> we zero the dummy ip header and is ignored. The only two fields 
>that
>pusateri> are significant in the dummy ip header are the source and 
>destinatio
>n
>pusateri> (group) ip address.
>
>The checksum field must also be correct, as I recently discovered.
>Juniper will drop Null-Registers with a bad encapsulated IP checksum.
>
>Thank you for the clarifications.
>
>-- 
>Charles R. Anderson
>Network Engineer
>Computing and Communications Center
>Worcester Polytechnic Institute
>