Last Call: NOPEER community for BGP route scope control to BCP

[Pekka Savola]

On 7 Nov 2002, Justin Fletcher wrote:
> > The IESG has received a request from the Prefix Taxonomy Ongoing
> > Measurement & Inter Network Experiment Working Group to consider NOPEER
> > community for BGP route scope control
> > <draft-ietf-ptomaine-nopeer-00.txt> as a BCP.
> > 
> > The IESG plans to make a decision in the next few weeks, and solicits
> > final comments on this action.  Please send any comments to the
> > iesg at ietf.org or ietf at ietf.org mailing lists by 2002-11-17.
> 
> I believe this should be considered as an experimental rather than a
> BCP.  It does not document current practice and requires implementation
> by router vendors before it can be adopted into practice.

Actually, I don't think this requires _anything_ from router vendors.

Taking this into use is, of course, a bit easier if there's something in
the routers, but I believe the "promise" of the mechanism is just to
specify how to use a new well-known community.

Well, seeing that there are different assumptions on this, I believe text 
should be clarified a bit (one way or the other).

> Other issues:
> 
> The community field should be previously assigned by IANA and defined in
> the document.
> 
> There's a large motivation section, but no implementation
> section (what do I do with NOPEER if receive it?)

Do you think example route-map statements are necessary?
 
> The paragraph
> 
>   This approach allows an originator of a prefix to attach a commonly
>   defined policy to a route prefix, indicate that a route should be
>   re-advertised conditionally, based on the characteristics of the
>   inter-AS connection.
> 
> does not define the conditions under which a route should be
> re-advertised.  Without such, I don't see a difference between
> NOPEER and NO-ADVERTISE.

A route-map is quite an explicit condition.
 
> There should at least be references to RFC1771 and RFC1997.

Agreed.
 
> I'd like a clear definition of "bilateral inter-AS peering"
> early in the document.

Agreed.

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords