Re: [GROW] Opsdir last call review of draft-ietf-grow-bgp-gshut-13

[<[e-mail]>]

OK,
Thanks Susan.

--Bruno

 > -----Original Message-----
 > From: Susan Hares [mailto:[e-mail]]
 > Sent: Thursday, January 18, 2018 12:25 PM
 > To: DECRAENE Bruno IMT/OLN
 > Cc: [e-mail]; [e-mail]; [e-mail]; [e-mail]
 > Subject: RE: Opsdir last call review of draft-ietf-grow-bgp-gshut-13
 > 
 > Bruno:
 > 
 > I'm sorry I'm this late for the review.   On the editorial nit, if you think it helps - send it to the RFC
 > editor.
 > 
 > On the logging knobs,  you understood my point.  Logs should cover what is section 4.2.  However,
 > since the document is in the RFC editor's queue - it is your choice.  If you get a chance to edit it in -
 > fine.  If not, those people who implement the gshut will probably put it in.
 > 
 > Thanks for asking,  Susan Hares
 > 
 > -----Original Message-----
 > From: [e-mail] [mailto:[e-mail]]
 > Sent: Thursday, January 18, 2018 6:19 AM
 > To: Susan Hares
 > Cc: [e-mail]; [e-mail]; [e-mail]; [e-mail]
 > Subject: RE: Opsdir last call review of draft-ietf-grow-bgp-gshut-13
 > 
 > Hi Susan,
 > 
 > Thanks for your time reviewing this document and you below comments.
 > 
 > Please see my replies inline [Bruno]
 > 
 > Note that however fast I'm answering to your review, that document is now in RFC editor queue,
 > and hence technical changes are much more difficult. (AFAIK, would require specific approval
 > from the responsible AD). Thanks for taking this into account.
 > 
 > 
 > 
 >  > -----Original Message-----
 >  > From: Susan Hares [mailto:[e-mail]]  > Sent: Thursday, January 18, 2018 9:46 AM  >
 > To: [e-mail]  > Cc: [e-mail]; [e-mail]; [e-mail]  >
 > Subject: Opsdir last call review of draft-ietf-grow-bgp-gshut-13  >  > Reviewer: Susan Hares  >
 > Review result: Has Nits  >  > Status: Nits  >  > The operational procedures described in this
 > process for the gshut comment are  > accurately covered, and SHOULD work well.  The
 > Appendices A-C add to an  > operations document and should be retained for publication.
 > 
 > [Bruno] ok, thanks.
 > 
 >  > Technical nit:
 >  > location of technical nit: (section 4.3)  > The document indicats that the "BGP implementers
 > SHOULD provide configuration  > knobs that utilize teh GRACEFUL_SHUTDOWN community."
 >  >
 >  > What the problem is:
 >  > The document does not say is that their should be error reporting knobs to  > track the use of
 > GRACEFUL_SHUTDOWN community.  This can go in section 4.3 in  > one or two sentences.
 > 
 > [Bruno]
 > Could you please elaborate on this? What do you have in mind by "error reporting knobs"?
 > Thinking about this, what I could think of would be logs detailing the steps in section 4.2. Possibly
 > raising alarms when something seems wrong. (e.g. after waiting for BGP convergence, there is still
 > some traffic sent/received over the interface(s) related to the EBGP session) Is this what you were
 > thinking about?
 > 
 > 
 >  > Editorial nit:
 >  > section 3. paragraph 2, p. 3
 >  >
 >  > /This is because alternate paths can be hidden by knodes of an AS./  > commment:  The implied
 > "this" is too vague for a specification.
 >  >
 >  > Fix:/This lack of path occurs because alternate paths can be hidden by nodes of  > an AS."/
 > 
 > 
 > [Bruno]
 > I agree that your proposed text makes it more explicit, which is always better in a specification
 > (when it's not redundant).
 > However, I would note 2 points:
 > - section 3 is part of the introduction to the problem space. It explains the root cause of the
 > problem. It's not part of the graceful shutdown specification.
 > - The text you are referring to is a paragraph starting with:  "First, some routers can have no path
 > toward an affected prefix, and drop traffic destined to this prefix.  This is because alternate paths
 > can be hidden by nodes of an AS."
 > Hence "This" refers to the short sentence which is immediately before. I don't feel that there is
 > much ambiguity.
 > 
 > That being said, as you classify your comment as an editorial nit, I could propose to forward it to
 > the RFC editor, and let the RFC editor propose a resolution.
 > Would this be ok for you?
 > 
 > Thanks,
 > Best regards,
 > --Bruno
 > 
 > 
 > 
 > 
 > 
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