All things related to multicast

[Hitoshi Asaeda <>]

>  > Comments for kernel to support PIM.
>  > At first, please check sys/netinet/ip_mroute.c. If your ip_mroute.c
>  > includes the comment on its top, such as "PIM-SMv2 and PIM-DM
>  > support", then your kernel would be ready for enabling PIM.
> 
> I will need to patch my kernel (obsd 3.2, sparc) as I cannot upgrade
> due to hardware constraints and the mix of inhouse applications
> that depend on that kernel.  I have been searching the net for the
> old patches that were available for *BSD back in 2001-2002 but all
> of the links are dead.  Do you still have any of that?  I could get

If you need old *BSD, I may suggest you try KAME (http://www.kame.net).
However, OpenBSD supported by KAME was 3.6 or older, and it does not
support PIM over IPv4 (while PIM over IPv6 is supported with OBSD3.6).
Only FreeBSD 5.4 supports PIM for both IPv4/v6 in KAME.

> Also, I fear that I cannot build xorp on my platform (it just doesn't
> have the horsepower) so I will need to get by with 'pimd' or 'pimdd'
> with PIM-SM support unless there is someway to generate a lightweight
> version of xorp using a cross-toolchain somehow.

I suspect you can use pimdd because of interoperability problems with
your peering site.
And I may wonder even if you can initiate PIM-SM connection with pimd
with your peering site, there might be no one can answer or give some
comment when you are in trouble (because the code maintenance for both
pimd and pimdd is ended and not many people have been using them in
the global domain these days).

This is a different discussion. Just a quick note.
You may need not only PIM but also SSM functions. pimd does not
support SSM. Of course pimdd neither.
XORP supports SSM. To make XORP lightweight, you may want to configure
XORP with Lightweight-IGMPv3/Lightweight-MLDv2 (or someone says them
IGMPv3-Lite/MLDv2-Lite). This configuration won't change PIM behavior
but IGMP/MLD state machine. It'd be nice if the router's process may
be a little lighter.

Regards,
--
Hitoshi Asaeda