Re: [Idr] WGLC on draft-ietf-idr-as-private-reservation-00

[David Farmer <[e-mail]>]

On 12/20/12 11:48 , Jon Mitchell wrote:
>
> David -
>
> Just to close this out, I don't plan to make these additional changes to
> the draft.  I don't plan on saying operators MUST filter private use
> ASN's outbound specfically with an AS_PATH filter list or dictate to
> operators anything they must do except not to send private use ASN's to
> the Internet, which is the same guidance given in RFC 1930 and already
> in the draft.  Operators are inventive and can use whatever tool to do
> this they please (community/prefix based could be used if they know
> which communities or prefixes come from private ASNs for instance).

The -01 draft says "Private Use ASNs must be removed from the AS_PATH 
before being advertised to the global Internet."  This is perfect, how 
this is accomplished is completely up to the operator.  But, it says you 
MUST remove Private ASNs outbound to the Internet.

> On the inbound filtering, operators may filter /25 or longer, their own
> address space, private or public ASN's or anything else they please in
> my opinion, and none of this needs to be codified in this draft, however
> is certainly welcomed in BCP documents.  We've already established in
> many threads that the worse case is a prefix from a mis-configured
> (leaked to Internet Private Use ASN) is dropped.

All I was looking for was something making explicit and reinforcing to 
those using Private Use ASNs, everyone else MAY disregard prefixes using 
Private Use ASNs inbound from the Internet.  Which is why they MUST 
remove Private ASNs outbound to the Internet.  Its in their own interest 
that they remove the Private Use ASNs not everyone else.

But if you believe that belongs in a separate BCP then OK, but them my 
question would be why doesn't this whole section belong in a separate BCP.

-- 
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