All things related to multicast

[Bill Nickless <>]

My $0.02;

Please don't block multicast group addresses, unless you have an automated 
way to check the ARIN allocations and update your filters when ARIN 
does allocate space for use.

(I dropped my laptop and have had no end of grief fixing it, which is my 
poor excuse for not updating my two Internet Drafts before now.)

On Tue, 2 Sep 2003, David Farmer wrote:

> I had cause to take a look at RFC 3171 today.
> 
> So, I have a multicast best common practice (BCP) question.
> 
> Since 225.0.0.0 - 231.255.255.255 and 234.0.0.0 - 
> 238.255.255.255 are reserved per section 2 and per section 11 
> reserved space is not to be used by applications should any traffic 
> destine to these locations be consider BOGON until assigned?
> 
> Would it be a bad idea to block it?  Particularly at an administrative 
> boundary.
> 
> I don't see any discussion of reserved space in Bill Nickless' 
> Internet Draft related to these issues.
> 
> http://www.ietf.org/internet-drafts/draft-nickless-ipv4-mcast-
> unusable-02.txt
> 
> What do others think?  I what problems do you see in doing 
> something like this?  
> 
> For sure you would have to monitor any new IANA assignments 
> and update the filters to allow any new assignments.  But this 
> shouldn't be anymore work that any other BOGON filters.
> 
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