Re: [Isis-wg] draft-wei-isis-tlv-03 (Purge Originator Id)

Christian Hopps <chopps@rawdofmt.org> Fri, 14 May 2010 18:34 UTC

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From: Christian Hopps <chopps@rawdofmt.org>
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Date: Fri, 14 May 2010 14:33:45 -0400
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To: Tony Li <tony.li@tony.li>
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Cc: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, Christian Hopps <chopps@rawdofmt.org>, "isis-wg@ietf.org" <isis-wg@ietf.org>, "bruno.decraene@orange-ftgroup.co" <bruno.decraene@orange-ftgroup.com>, "weifang@chinamobile.com" <weifang@chinamobile.com>, Dave Katz <dkatz@juniper.net>, 李振强 <lizhenqiang@chinamobile.com>
Subject: Re: [Isis-wg] draft-wei-isis-tlv-03 (Purge Originator Id)
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It is now Unstuck. Sorry the ball got dropped on this, folks.

Thanks,
Chris.

On May 13, 2010, at 10:03 PM, Tony Li wrote:

> 
> 
> Still stuck:
> 
> https://datatracker.ietf.org/idst/status.cgi?passed_filename=draft-ietf-isis
> -purge-tlv-00
> 
> Our Beloved Chair is responsible for informing the secretariat that this was
> accepted by the group.
> 
> Tony
> 
> 
> 
> On 5/13/10 6:49 PM, "李振强" <lizhenqiang@chinamobile.com> wrote:
> 
>> Yes, we accepted this as a WG draft. I submitted the 00 version 50 days ago.
>> Due to the initial version checking, I did not get any further information
>> till now.
>> Anybody know who is responsible for the initial version checking? Where should
>> I go to check the and move the status forward? Thanks.
>> 
>> Best Regards,
>> 
>> 
>> 
>> 
>> Zhenqiang Li
>> 13911635816
>> Department of Network Technology
>> China Mobile Research Institute
>> 2010-05-14
>> 
>> 
>> 
>> 发件人: Les Ginsberg (ginsberg)
>> 发送时间: 2010-05-14 09:23:45
>> 收件人: Tony Li; Dave Katz
>> 抄送: lizhenqiang@chinamobile.com; Jie Dong; bruno.decraene@orange-ftgroup.co;
>> isis-wg@ietf.org; weifang@chinamobile.com
>> 主题: RE: [Isis-wg] draft-wei-isis-tlv-03 (Purge Originator Id)
>> 
>> Folks -
>> 
>> Any reason why 
>> 
>> draft-ietf-isis-purge-tlv-01
>> 
>> (or at least the 00 version allegedly submitted some time back) is not
>> posted? We did accept this as a WG doc did we not??
>> 
>>   Les
>> 
>>> -----Original Message-----
>>> From: Tony Li [mailto:tony.li@tony.li]
>>> Sent: Friday, April 23, 2010 4:50 PM
>>> To: Dave Katz; Les Ginsberg (ginsberg)
>>> Cc: lizhenqiang@chinamobile.com; Jie Dong; bruno.decraene@orange-
>>> ftgroup.co; isis-wg@ietf.org; weifang@chinamobile.com
>>> Subject: Re: [Isis-wg] draft-wei-isis-tlv-03 (Purge Originator Id)
>>> 
>>> 
>>> So I have aversion (perhaps irrational ;-) to overloading semantics
>>> into the length field.  So I've actually added the flag.
>>> 
>>> I've also addressed a number of comments, both on list and privately,
>>> so this is worth a full read.
>>> 
>>> Comments?
>>> 
>>> Tony
>>> 
>>> 
>>> 
>>> On 4/23/10 10:57 AM, "Dave Katz"  <dkatz@juniper.net > wrote:
>>> 
>>>> This seems to make sense so long as the absence of the neighbor
>> field
>>>> unambiguously says that the inserting system is also the originator
>>> of
>>>> the purge (otherwise you need a flag.)
>>>> 
>>>> --Dave
>>>> 
>>>> On Apr 22, 2010, at 2:39 PM, Les Ginsberg (ginsberg) wrote:
>>>> 
>>>>> One other suggestion.
>>>>> 
>>>>> The usefulness of the extensions defined in this draft depend upon
>>>>> the extent to which they are deployed - which no doubt will take
>>>>> considerable time under the best of circumstances. It seems that we
>>>>> could enhance the usefulness of the extensions even in the case of
>>>>> partial deployment by allowing an IS which supports these
>> extensions
>>>>> to add the new TLV to purges it receives that do not include the
>> new
>>> TLV.
>>>>> It could include both its own system ID (to identify who added the
>>>>> TLV) and the system ID of the neighbor from whom the empty purge
>> was
>>>>> received. While this is not guaranteed to pinpoint the source of
>> the
>>>>> purge, it would at least provide a pointer to the portion of the
>>>>> network in which the purge originated.
>>>>> 
>>>>> So the TLV would then look like:
>>>>> 
>>>>> TLV - code to be assigned by IANA
>>>>> Length - Either (1 * systemid length) or (2 *system ID length)
>> Value
>>>>> - System ID of the system inserting the TLV (Required) System ID of
>>>>> the system from which the purge was received (Optional)
>>>>> 
>>>>> ???
>>>>> 
>>>>>  Les
>>>>> 
>>>>>> -----Original Message-----
>>>>>> From: isis-wg-bounces@ietf.org [mailto:isis-wg-bounces@ietf.org]
>> On
>>>>>> Behalf Of Tony Li
>>>>>> Sent: Wednesday, April 21, 2010 11:39 PM
>>>>>> To: Les Ginsberg (ginsberg); lizhenqiang@chinamobile.com; Jie
>> Dong;
>>>>>> bruno.decraene@orange-ftgroup.co; isis-wg@ietf.org;
>>>>>> weifang@chinamobile.com
>>>>>> Subject: Re: [Isis-wg] draft-wei-isis-tlv-03 (Purge Originator Id)
>>>>>> 
>>>>>> 
>>>>>> Hi Les,
>>>>>> 
>>>>>>> But hopefully we can comment on 01 anyway?? :-)
>>>>>> 
>>>>>> Of course!  ;-)
>>>>>> 
>>>>>>> I don't see the need for Section 3. It was interesting discussion
>>>>>>> material while we were debating the merits of making this a WG
>>>>>> document,
>>>>>>> but I think it has drawbacks when it is included in what is
>>>>>>> intended
>>>>>> to
>>>>>>> become a standards document.
>>>>>> 
>>>>>> Well, the point was to help document some of the field failures
>>> that
>>>>>> we've seen and motivate the changes.
>>>>>> 
>>>>>>> In the second set of three points, only the first (which
>> documents
>>>>>> the
>>>>>>> lamentable purge on checksum error experience) has value. The
>> last
>>>>>> two
>>>>>>> are anecdotal and could be translated as "there are some weird
>>> bugs
>>>>>> out
>>>>>>> there". Interesting - but unnecessary. The first point could be
>>>>>>> mentioned in the introduction as part of the justification for
>> the
>>>>>>> protocol extensions - but I think even that is unnecessary.
>>>>>> 
>>>>>> True, but without the background, these changes would seem like
>>>>>> something straight out of the Oort cloud.
>>>>>> 
>>>>>> Compromise: condense the text and move to the introduction?
>>>>>> 
>>>>>> 
>>>>>>> In Section 5 I would like to see language which says "hostname
>> TLV
>>>>>>> SHOULD only be used in addition to the system ID TLV". As every
>> IS
>>>>>> MUST
>>>>>>> have a unique systemID but hostnames are optional I would prefer
>>>>> that
>>>>>> if
>>>>>>> an implementation chooses to include the extra info in the purge
>>>>> that
>>>>>>> the system ID ALWAYS be there. (This is unenforceable of course)
>>>>>> 
>>>>>> 
>>>>>> Works for me.  Other folks?
>>>>>> 
>>>>>> 
>>>>>>> I think there needs to be language which makes clear that the
>>>>> absence
>>>>>> or
>>>>>>> presence of this additional information has no impact on the
>>>>>> acceptance
>>>>>>> of a purged LSP as valid i.e. no changes to the operation of the
>>>>>> Update
>>>>>>> process are introduced by this draft.
>>>>>> 
>>>>>> 
>>>>>> Can't hurt.  I'm certain that this will break some conformance
>>>>>> testers regardless.
>>>>>> 
>>>>>> Any other comments?
>>>>>> 
>>>>>> Tony
>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
>>>>>> Isis-wg mailing list
>>>>>> Isis-wg@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/isis-wg
>>>>> _______________________________________________
>>>>> Isis-wg mailing list
>>>>> Isis-wg@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/isis-wg
>>>>> 
>>>> 
> 
> 
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