Re: [ssm] Document Action: An Overview of Source-Specific Multicast(SSM) Deployment to Informational

[Jon Zeeff <jzeeff@internet2.edu>]

> From my experience, windows XP does send IGMPv2 reports if it sees IGMPv2 
> queries.
>It MUST do this according to the IGMPv3 spec.

So if I do manage to get my LAN completely IGMPv3 capable and thus allow 
the use of SSM, all it takes is one person
plugging in a machine running IGMPv2 and SSM breaks.  This probably means 
that SSM is unimplementable except
in some special cases (example: one host per vlan).

>So, as far as easy gradual migration to SSM with DoS attack prevention is 
>concerned,
>this has almost completely been ignored by the IETF process.

I see similar lack of concern about real world security in wireless routing 
protocols (and DHCP and IPv6 and PIM and ...).

Thanks for the info.

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