Re: [oam] [mpls-tp] IAB/IESG Joint Design Session on Forwarding Plane Operations, Administration and Maintenance

[Robert Rennison <[e-mail]>]

Greg,

Thanks for the comments. I'll answer since  Sasha  is on vacation and , hopefully, not reading too much email!.


> *   slide #2 do you mean "Connectivity Verification" or it was intended to be "Continuity Verification"?

Looks like  a typo to me,  the two bullets should be 
Continuity Check (proactive)
Connectivity Verification (on-demand)

 >*   do you see CV as exclusively on-demand tool that can not, would not be used as proactive tool?

I see CV more as a commissioning troubleshooting thing, rather than as proactive. It  should of course be possible to use it as  be a proactive function but in its default mode I'd think of it as more of a troubleshooting mechanism.

> *   slide #5 is Forward Defect Notification used interchangeably with FDI (Indication)?
It is being used synonymously here.

 *   slide #5 do you see FRR in MPLS-TP beyond unidirectional MPLS-TP LSP?

> *   slide #7 first node D listed as MEP even though LSP path characterized as A->B->C->D->E. Then node E referenced as MEP ("FDI is received ...")
I agree Node E should be a MEP 

> *   Regarding you concern shouldn't the head-end node A inform E that condition was cleared after node A receives Path Error message Tunnel Locally Repaired? It would be preferable to inform node C but it might not be reachable via G-ACh.
I am sure one could code/specify ones way around this, I think the main point being made is that is that the presence of MPLS FRR can complicate life if FDI is being used. (Note I am not sure who is proposing to use it but I'm sure will hear on Tuesday)

Cheers

Rob


On Fri, Oct 8, 2010 at 12:33 AM, Alexander Vainshtein <[e-mail]<mailto:[e-mail]>> wrote:
Ron, all,
As it happens neither I nor any of my colleagues will be able to attend.

I attach the position paper on the subject just in case.

Regards and apologies,
    Sasha

________________________________________
From: Alexander Vainshtein
Sent: Friday, September 24, 2010 11:44 PM
To: Ronald Bonica
Cc: Robert Rennison; Prashant Desai; Alexander Kugel; Rotem Cohen; Andrew Sergeev; Idan Kaspit; David VanRyzin; Jacob Ruthstein
Subject: RE: [mpls-tp] IAB/IESG Joint Design Session on Forwarding Plane Operations, Administration and Maintenance

Ron hi,
Please see attached a presentation prepared by my colleagues and myself.
I am sending it to you because I have not found any indications about how it should be submitted. And the deadline that has been announced seems quite close 9if not beyond us).
Unfortunately, converting this presentation to an I-D was not possible due to lack of time.

Regards,
    Sasha

-----Original Message-----
From: Alexander Vainshtein
Sent: Saturday, September 11, 2010 4:54 PM
To: 'Ronald Bonica'
Cc: Robert Rennison; Prashant Desai; Idan Kaspit; Alexander Kugel; Rotem Cohen; David VanRyzin
Subject: RE: [mpls-tp] IAB/IESG Joint Design Session on Forwarding Plane Operations, Administration and Maintenance

Ron,
My colleagues and I plan to submit a position paper for the Joint Design Session.
We would appreciate any tips regarding the submission process since the deadline is close but, as of writing this,  no information (beyond  the size - 1 to 5 pages) seems to be available.

Regards,
    Sasha

-----Original Message-----
From: [e-mail]<mailto:[e-mail]> [mailto:[e-mail]<mailto:[e-mail]>] On Behalf Of Ronald Bonica
Sent: Friday, September 03, 2010 8:31 PM
To: [e-mail]<mailto:[e-mail]>; [e-mail]<mailto:[e-mail]>
Subject: [mpls-tp] IAB/IESG Joint Design Session on Forwarding Plane Operations, Administration and Maintenance

Folks,

Would anyone intending to submit a position paper please notify me privately?

                                        Ron

> ----- Original Message -----
> From: "IESG Secretary" <[e-mail]<mailto:[e-mail]>>
> To: "IETF Announcement list" <[e-mail]<mailto:[e-mail]>>
> Sent: Friday, August 20, 2010 7:36 PM
> Subject: IAB/IESG Joint Design Session on Forwarding Plane Operations,
> Administration and Maintenance
>
>
> > The IAB and IESG would like to announce a joint design session on
> > Forwarding Plane Operations, Administration and Maintenance (OAM) to
> be
> > held on October 12 through October 14 at George Mason University in
> > Fairfax, Virginia, USA.
> >
> > IP and ICMP support very simple forwarding plane diagnostic tools
> (e.g.,
> > PING, TRACEROUTE). During the Internet's first decades, these tools
> > fulfilled most operational requirements. However, during the last
> decade,
> > network operators have deployed many technologies that rely upon
> > tunneling. These technologies include Pseudo-wires, Layer 2 Virtual
> > Private Networks, and Layer 3 Virtual Private Networks. While the
> internet
> > community has enhanced its forwarding plane diagnostic tool kit with
> the
> > deployment of Bidirectional Forwarding Detection (BFD), some suggest
> that
> > the tool kit is still inadequate for tunneled applications.
> >
> > The purpose of this design session is to discover and document
> > operational requirements and constraints for tunneled forwarding
> plane
> > OAM. The design session will also entertain solution proposals.
> > While
> most
> > activity in this area has been associated with Multi-Protocol Label
> > Switching (MPLS), session organizers also encourage generic
> > proposals
> that
> > include other tunneling mechanisms (e.g., IP-in-IP).
> >
> > The scope of this design session is limited to the forwarding plane.
> > Proposals concerning control and management plane protocols will not
> be
> > accepted. For example, a proposal that probes a tunnel for
> > continuity would be acceptable, while a proposal for reporting
> > tunnel continuity
> to a
> > routing protocol or management station would be productive, but
> beyond the
> > scope of this workshop.
> >
> > Those intending to make presentations must submit position papers to
> the
> > IAB/IESG by September 24. Position papers should constitute one to
> five
> > pages on the problem or solution space, with a particular emphasis
> > on areas that the IETF should address or revisit. Evaluation of the
> position
> > papers will be performed by a committee consisting of IESG and IAB
> > members. A limited number of seats will be available for persons not
> > presenting.
> >
> > Position papers will be made publicly available. On the basis of the
> > position papers, a number of invited speakers will be asked to
> present at
> > the workshop. A final agenda with timeslots will be published by
> October
> > 1.
> >
> >
> > Further information about position paper submission procedures are
> > forthcoming. Interested parties are advised to subscribe to the oam
> at
> > ietf.org<http://ietf.org> mailing list for discussion and announcements related to
> > the workshop. Additional information will be available at
> > http://www3.tools.ietf.org/area/ops/trac/wiki/oamJDS.
> >
> > Ron Bonica, IESG
> > Danny McPherson, IAB
> > Hannes Tschofenig, IAB
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