Re: [Idr] draft-ietf-idr-as0-00 ?

[Warren Kumari <[e-mail]>]

[ Changed subject to reflect new title ]


On Dec 1, 2011, at 3:38 PM, Christopher Morrow wrote:

> On Sat, Nov 19, 2011 at 5:57 PM, Warren Kumari <[e-mail]> wrote:
>> 
>> On Nov 13, 2011, at 8:30 PM, Enke Chen wrote:
>> 
>>> Support, but with the following suggestions:
>>> 
>>> 1) Nit: change "bgp listener" to "bgp speaker".
>> 
>> Thank you, done.
>> 
>>> 
>>> 2) The following language is not very precise.  Due to the incremental nature, we will need to remove the existing route too.
>>> 
>>> -----
>>>    a BGP
>>>    listener MUST NOT accept an announcement which has an AS number of
>>>    zero in the AS-PATH attribute, and SHOULD log the fact that it has
>>>    done so.
>>> -----
>>> 
>>>    How about the following:
>>> 
>>>    An UPDATE message that contains the AS number of zero in the AS-PATH attribute
>>>    MUST be considered as malformed, and be handled by the procedures specified in
>>> 
>>> draft-ietf-idr-optional-transitive-04.txt
>>> 
>>> 3) If this draft is adopted, we should also add AS 0 as one of the error conditions in
>>> rfc4893bis.
>> 
>> John also provided some text for that section and Keyur suggested that we log and treat as a WITHDRAW.
>> 
>> This would read as:
>> "This document specifies that a BGP speaker MUST NOT originate or propagate a route with an AS number of zero.  If a BGP speaker receives a route which has an AS number of zero in the AS_PATH attribute, it SHOULD be logged and treated as a WITHDRAW."
>> 
> 
> a question came up recently (today) on nanog about how AS0 should be
> treated wrt AGGREGATOR attributes... Should this say use of AS0
> anywhere (make a list perhaps?) is verboten? (or was that assumed
> already?)

Actually Keyur Patel already pointed out the Aggregator (and AS4 Aggregator) attribute issue, and I included text in the WG version of the doc, which I posted recently (although I have just realized that I entered the text as "Aggregator" and not "AGGREGATOR", same for AS4...)

Which reminds me -- would folk please review draft-ietf-idr-as0-00 ( http://tools.ietf.org/html/draft-ietf-idr-as0-00 ) and provide feedback?
I *think* that I incorporated everyones comments, although I accidentally overwrote the changed version with an older version (never edit a file in two editors at once :-)) and so may have missed some...

W

> 
>> This avoids having a normative reverence to the optional-transitive draft and is (IMO) a little clearer. It also saves optional-transitive from referencing this, and so we avoid the deadlock...
>> 
>> Thoughts?
>> 
>> W
>> 
>> 
>>> 
>>> Thanks.   -- Enke
>>> 
>>> 
>>> On 10/28/11 1:51 PM, John Scudder wrote:
>>>> Folks,
>>>> 
>>>> Please send comments to the list prior to the IDR meeting on November 15.
>>>> 
>>>> Thanks,
>>>> 
>>>> --John
>>>> 
>>>> On Oct 27, 2011, at 9:29 AM, Warren Kumari wrote:
>>>> 
>>>> 
>>>>> Hello IDRites,
>>>>> 
>>>>> I would like to draw your attention to draft-wkumari-idr-as0-01.txt  (
>>>>> http://tools.ietf.org/html/draft-wkumari-idr-as0-01
>>>>>  ) - I am asking that this draft be considered for WG adoption.
>>>>> 
>>>>> 
>>>>> I have already received some feedback, mainly suggesting:
>>>>> 
>>>>> - Add a text for AS number 0 as a reserved in Aggregator and AS4
>>>>> Aggregator attribute
>>>>> 
>>>>> - Add text for AS number 0 as a reserved value in communities and
>>>>> extended communities. (RFC 1997 and Four-octet AS Specific Extended
>>>>> Communities)
>>>>> 
>>>>> Also suggested was providing a little more information on what to do it you do receive a route containing AS0  (more descriptive than just "MUST NOT accept" (for example, stating that it should be "excluded from the Phase 2 decision function")).
>>>>> 
>>>>> Anyway, I would value your feedback and input.
>>>>> 
>>>>> W
>>>>> 
>>>>> 
>>>>> 
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