Re: Use of SAP in a PIM SSM Network

[Tom Pusateri <pusateri@juniper.net>]

In message <3A1C67D1.B4814CBF@21rst-century.com> you write:
>
>   The basic thing here is that broadcasters are going to want static
>Class D addresses. (We, for example, have been up (doing ISM) since
>early 
>October with about 30 seconds of down time, and certainly want constant
>addresses.) 
>SSM will not change that. Whether these addresses are assigned by GLOP
>type mechanisms or by other means such as MALLOC/ MADCAP doesn't really
>matter that much, as long
>as collisions can be avoided. It would be nice, however, if a Global SSM
>allocation mechanism could be set up in the near future, before too many
>people's choices get set in stone.

Encouraging the use of static Class D addresses sets a bad precedent
and I don't think we should be encouraging this. The broadcasters
and content providers have static host names which can be
used for rendezvousing and the source address and group address should
be able to float as needed to meet demand. End users will not be
aware of the group address being used under most circumstances
anyway.

Thanks,
Tom