Re: [CCAMP] rough minutes for Berlin CCAMP meetings
"Adrian Farrel" <adrian@olddog.co.uk> Thu, 01 August 2013 14:15 UTC
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From: Adrian Farrel <adrian@olddog.co.uk>
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Date: Thu, 01 Aug 2013 15:15:00 +0100
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Subject: Re: [CCAMP] rough minutes for Berlin CCAMP meetings
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Thanks to chairs and note-takers for getting this together speedily and posting while we still remember (well, those of us who are not aged ADs) what happened. Good job. Adrian > -----Original Message----- > From: ccamp-bounces@ietf.org [mailto:ccamp-bounces@ietf.org] On Behalf Of > Lou Berger > Sent: 31 July 2013 17:51 > To: CCAMP > Subject: [CCAMP] rough minutes for Berlin CCAMP meetings > > > As before, it would be best to enter corrections on > http://tools.ietf.org/wg/ccamp/minutes (send mail to list if you can't). > > Discussion should take place on the list and *not* in etherpad. > > Much thanks to our secretaries and all who contributed to the notes. > > Lou > > > CCAMP Agenda For IETF 87 > > CCAMP Agenda For IETF 87 > > Version: Jul 22, 2013 > > > > First Session > > TUESDAY, July 30, 2013 > > 1700-1830 Afternoon Session III > > Room: Potsdam 3 > > Presentation Start Time Duration Information > > 0 17:00 10 Title: Administrivia & WG Status > > Draft: > > Presenter: Chairs > > Fatai Zhang: After this meeting we plan to update > [draft-ietf-ccamp-otn-g709-info-model] and > [draft-ietf-ccamp-gmpls-g709-framework] based on AD (Adrian Farrel) review. > > Comments requested on non presented WG drafts status: > > ‒ draft-ietf-ccamp-rsvp-te-srlg-collect > Oscar Gonzalez de Dios: The document is stable. There is one > functionality (knowing if a RRO suboject is incomplete or has been > edited) that needs to be made generic (there was a comment from Lou > during IETF 86th). A mail was sent on 4th of July with several options > to make the functionality generic. A new mail to the CCAMP list will be > sent this with the options. Feedback is requested from the CCAMP list. > ‒ draft-ietf-ccamp-rsvp-te-li-lb: > Daniele Ceccarelli: No changes from last meeting > > > 1 17:10 8 Title: LSP Attribute in ERO > > Draft: > http://tools.ietf.org/html/draft-ietf-ccamp-lsp-attribute-ro-02 > > Presenter: Cyril Margaria > > Lou Berger: I suspect that you addressed Adrian's [Farrel) comment. I > suggest you check with him via the list to confirm. > > > 2 17:18 8 Title: RSVP-TE Extensions for > Associated Bidirectional LSPs > > Draft: > http://tools.ietf.org/html/draft-ietf-ccamp-mpls-tp-rsvpte-ext-associated-lsp-06 > > Presenter: Matt Hartley > > Lou Berger: I think we can move rapidly towards Last Call. > Matt Hartley: Splendid. > > > 3 17:26 8 Title: RSVP-TE extension for recording > TE Metric of a LSP > > Draft: > http://tools.ietf.org/html/draft-ietf-ccamp-te-metric-recording-02 > > Presenter: George Swallow > > Oscar Gonzalez de Dios: Regarding IANA requests Collision with IANA > assignment. We need to align on temporary assignments to avoid collisions. > George Swallow: > Daniele Ceccarelli: How about we merge the drafts to minimized the > number of drafts to read? > George Swallow: We initially had this plan, but we wanted to avoid > holding up the other draft. > Lou Berger: Regarding IANA assignments, are you having similar issues in > MPLS? (re collision of temporary assignments values). We used to have > the wiki which has not been touched for a long time. > George Swallow: I fully support it. > Dan: We used to do that but our AD suggested to stop. > Lou Berger: It's not temporary assignment it is just a way to ensure > that documents do no collide and avoid implementation issues. We will > discuss this with Adrian Farrel. Do we have someone who will take > responsibility for the CCAMP page? > Oscar Gonzalez de Dios: I volunteer. > Lou Berger: We think it would be a good idea to resurrect the wiki > Adrian: Different times wrt RFC4020. People wanted to implement and > start interop. Now that we support early allocation which gives a > codepoint for 2 years i don't think we need allocations outside IANA. > What happens if we screw up that registry? > George Swallow: We will caveat the request. > Adrian Farrel: Why not go that extra bit further and request an early > allocation. We should talk in more details chairs and ADs. > Loa Andersson: Suggestion: ask the WG chairs if the draft is stable > enough to start development, then request an early allocation. > Adrian Farrel: I suggest that if I am uneasy with this the IESG may also > have issues. We can take this discussion offline (with CCAMP and MPLS > chairs). > > > > 4 17:34 8 Title: RSVP-TE LSP Route Diversity > using Exclude Routes > > Draft: > http://tools.ietf.org/html/draft-ietf-ccamp-lsp-diversity-02 > > Presenter: George Swallow > > Fatai Zhang: I understand the motivation, but I have an issue with the > comp0lext solution. Why not use existing solution like path-key? > George Swallow: The operator may not be using PCE. We did discuss the > solution early on before this document became a WG document. > Deborah Brungard: Make sure you read the document and trigger discussion > on the list, not wait for the meeting. > > > > 5 17:42 6 Title: Include Routes - Extension to > RSVP-TE > > Draft: > http://tools.ietf.org/html/draft-ali-ccamp-rsvp-te-include-route-04 > > Presenter: George Swallow > > Khuzema Pithewan: There are elements (constraints) influencing a section > or complete path of an LSP, these need to be managed. > George Swallow: If you cannot meet all the existing constraints, as well > as meet diverse objective, then an error will be issued. This is > described in the document. > Lou Berger: another XRO might be present and you need to consider it. > Adrian: Suggest that you rename subobject. As there might be confusion. > George Swallow: An easy change, do you have an suggestion? > Lou Berger: "Inclusion"? > George Swallow: "Follow the breadcrumb"? Ok, we (authors) will discuss. > > > > 6 17:48 5 Title: RSVP-TE Extension for Label > Switched Path (LSP) Inquiry > > Draft: > http://tools.ietf.org/html/draft-ali-ccamp-lsp-inquiry-00 > > Presenter: George Swallow > > Lou Berger: Off course reusing existing mechanisms is good, if you > manage to reuse also existing terminology its better. > George Swallow: Yes. > Khuzema Pithewan: This will affect existing services. > George Swallow: This is signaled from the IP plane, so we assume that > you are in a maintenance window. > Dieter Beller: There are technologies out there that allow soft set up > of resources. Are you envisaging to cover also those technologies? > George Swallow: We see this being used for shared mesh protection in > optical environments. > Dieter Beller: I'm talking about technologies that in tens of ms are > able to tear down an LSP and setup the protecting one. > Xian: I don't follow the motivation for the second type of inquiry. What > is its usage? Have you considered using calls? > George Swallow: I'm not familiar with that particular mechanism. > Lou Berger: Not sure how it would help. > > > 7 17:53 5 Title: RSVP-TE Extension for Signaling > Objective Function and Metric Bound > > Draft: > http://tools.ietf.org/html/draft-ali-ccamp-rc-objective-function-metric-bound-03 > > Presenter: George Swallow > > Lou Berger: how many people think it's a useful function (good number) > How many read? (slightly less) > How many think this is a good foundation? (slightly less) > Cyril Margaria: Mechanisms defined in draft-ietf-ccamp-lsp-attribute-ro > are meant for this kind of information > Oscar Gonzalez de Dios: Not only in this draft but in others you add > path computation constraints like include/exclude things. When path > computation is done in the middle of the network one may want to pass > all the path computation constraints in RSVP-TE. However, in the > proposal, you are duplicating PCEP objects. > Lou; we followed the approach that we can distribute path computation. > Oscar Gonzalez de Dios: Not what I meant. I mean that if there is > already a complete syntax to express path computation constraints, > inclusions/exclusions, etc, why not reuse it? > Lou Berger: Can you make this suggestion on the list? > Fatai Zhang: not sure about the value of this draft. > > > > 8 17:58 5 Title: RSVP-TE Signaling Extension for > Bandwidth availability > > Draft: > http://tools.ietf.org/html/draft-long-ccamp-rsvp-te-bandwidth-availability-01 > > Presenter: Min Ye > > Lou Berger: See the TSV WG [Tunnel Congestion I-D?], there could be > overlap with your draft. > Khuzema Pithewan: you might end up multiple lengths to satisfy a > bandwidth request. > > > 9 18:03 5 Title: OSPF Routing Extension for > links with variable discrete bandwidth > > Draft: > http://tools.ietf.org/html/draft-long-ccamp-ospf-availability-extension-00 > > Presenter: Min Ye > Matt Hartley: Should this be an OSPF WG draft? > Lou Berger: in the past we agreed with the OSPF chairs that it is > possible to make OSPF changes in CCAMP. > > > 10 18:08 7 Title: Domain Subobjects for Resource > ReserVation Protocol – Traffic Engineering (RSVP-TE) > > Draft: > http://tools.ietf.org/html/draft-dhody-ccamp-rsvp-te-domain-subobjects-02 > > Presenter: Dhruv Dhody > > Deborah Brungard: [Poll] > How many think it's useful? [good number], How many have read [good > number] Take to the list > > > 11 18:15 5 Title: A SNMP MIB to manage GMPLS > with General Constraints Support > > Draft: > http://tools.ietf.org/html/draft-gmggm-ccamp-gencons-snmp-mib-02 > > Presenter: Giovanni Martinelli > > Lou Berger: I think this document is timed perfectly in relation to the > WSON work. > Fatai Zhang: General comment. When do we need MIB drafts? Do we need it > in this case? Some MIB drafts are on the CCAMP page and are not updated > for years. > Deborah Brungard: Some people use SNMP as management interface, some > others use different management protocols > Adrian: You are not required to write MIB modules. You are required to > discuss how your network may be managed. > > > 12 18:20 5 Title: Information Model for WSONs > with Impairments Validation > > Draft: > http://tools.ietf.org/html/draft-martinelli-ccamp-wson-iv-info-02 > > Presenter: Giovanni Martinelli > > Dieter Beller: Considering we do not have data plane interop, and a > computation capability to compute end-to-end, find this work a little early? > Giovanni: What do you mean that there is no data plane compatibility? > The answer from ITU-T folks was that there could be some multivendor case. > Dieter From the discussion in Orlando interop is not currently capable, > so is development of an information model too soon? > Giovanni: The compatibility will come, we cannot make any public > statement now. There are some parameters that no one cares how are > computed. > Dieter Beller: We are supposed to develop standard that provide > interoperability > Giovanni: Yes. At the control plane. > Deborah Brungard: I suggest to talk with Q6 guys. Interim meeting, to > help define. > > > 13 18:25 5 Title: Information Encoding for WSON > with Impairments Validation > > Draft: > http://tools.ietf.org/html/draft-martinelli-ccamp-wson-iv-encode-02 > > Presenter: Giovanni Martinelli > > No comments. > > > > > > Adjourn 18:30 > > > > Second Session > > WEDNESDAY, July 31, 2013 > > 1300-1500 > > Room: Potsdam 1 > > Presentation Start Time Duration Information > > 0 13:00 5 Title: Administrivia > > Draft: > > Presenter: Chairs > > > 14 13:05 8 Title: Framework and Requirements for > GMPLS based control of Flexi-grid DWDM networks > > Draft: > http://tools.ietf.org/html/draft-ogrcetal-ccamp-flexi-grid-fwk-03 > > Presenter: Oscar Gonzalez de Dios > > Deborah Brungard: we have a lot of liaisons from ITU-T. G.872 was consented? > Malcolm: G.872 has been consented. > Deborah Brungard: has it been sent to the CCAMP? > Malcolm: I think it is worth sending a specific Liaison to Q6. > Lou Berger: polling on usefulness, reading and support as foundation of > WG work. Good support. Confirm on the list. > > > 15 13:13 8 Title: RSVP-TE Signaling Extensions > in support of Flexible Grid > > Draft: > http://tools.ietf.org/html/draft-zhang-ccamp-flexible-grid-rsvp-te-ext-02 > > Presenter: Xian Zhang > > Giovanni: what happens if the LSP needs to be resized? > Xian: > Lou Berger: The document is in an early stage of development. [Poll] How > many have read? How many support? Pretty good number but less than FWK. > We may poll before the next meeting, assuming adoption of the framework > document. > Iftekar: It seems that this document isn't as well developed. Does it > make sense to adopt. > Lou Berger: We can adopt early if it makes sense. remember that > adoption is the start of the WG's technical work, not a statement that a > documented solution is completely correct. if you feel the document is > not ready or heading in the wrong direction, then you should bring any > comments to the list. > Iftekar: [?] > Giovanni: WG can judge if the document is suitable, but it maybe early. > Lou Berger: So you feel adopting the document is premature? > Giovanni: Yes. > > > 16 13:21 8 Title: GMPLS OSPF-TE Extensions in > support of Flexible Grid DWDM Networks > > Draft: > http://tools.ietf.org/html/draft-zhang-ccamp-flexible-grid-ospf-ext-02 > > Presenter: Ramon Casellas > > Cyril Margaria: A bit too early to make it a wg document > Lou Berger: Specific technical issues? > Cyril Margaria: no > Lou Berger: Okay, then please review and send specific comments to the list. > Lou Berger: General comment. Please take advantage of the list to raise > comments and objections, lack of discussion may be misconstrued as > concurrence or disinterest. > > Fatai Zhang: We could adopt the framework and label drafts and then > speak about signaling and routing > Lou Berger: Can you make this suggestion on the list once the result of > the framework adoption poll is known? > > > 17 13:29 7 Title: An SNMP MIB extension to > RFC3591 to manage optical interface parameters of DWDM applications > > Draft: > http://tools.ietf.org/html/draft-galikunze-ccamp-g-698-2-snmp-mib-03 > > Presenter: Gabriele Galimberti > > 18 13:36 7 Title: An SNMP MIB extension to > RFC3591 to manage optical interface parameters of DWDM applications > > Draft: > http://tools.ietf.org/html/draft-galikunze-ccamp-opt-imp-snmp-mib-00 > > Presenter: Gabriele Galimberti > > Gert Grammel: These two drafts are covering the same content of the one > we discussed in Orlando? > Gabriele Galimberti: one is covering what is in the ITU-T recommendation > and the other one what is not there. They are complimentary. > Deborah Brungard: [Poll] How many have read the document? [Not too many] > Hopefully we will see a Liaison to help us progress these documents. > > > 19 13:43 8 Title: Extension to the LMP for DWDM > Optical Line Systems to manage optical parameters of DWDM applications > > Draft: > http://tools.ietf.org/html/draft-dharinigert-ccamp-g-698-2-lmp-03 > > > http://tools.ietf.org/html/draft-dharinigert-ccamp-opt-imp-lmp-00 > > Presenter: Gert Grammel > > Deborah Brungard: If you not use the application codes, the set of > parameters you are defining is enough to provide interoperability? > Gert Grammel: If it is a standard application code then it is > interoperable. If it is not a standards application code, then... > Deborah Brungard: it would be good to take it to Q6 > [Poll] Is draft-dharinigert-ccamp-opt-imp-lmp-00 useful, [a reasonable > number]. Poll for 698.2 lmp same number. Poll for opt imp lmp same number -1 > > > > 20 13:51 7 Title: Use cases for operating > networks in the overlay model context > > Draft: > http://tools.ietf.org/html/draft-ceccadedios-ccamp-overlay-use-cases-01 > > Presenter: Daniele Ceccarelli > (single presentation for next) > > 21 13:58 8 Title: Applicability of Generalized > Multiprotocol Label Switching (GMPLS) User-Network Interface (UNI) > > Draft: > http://tools.ietf.org/html/draft-zhang-ccamp-gmpls-uni-app-04 > > Presenter: Daniele Ceccarelli > > Adrian Farrel: AD hat off - My name appears on applicability I-D, but > not on the use cases. This is not an accident, if we go for option 1 > fine, if we go for option 2 I would not support. I do not think the > approach is good or even possible. This is not how we should build networks. > Lou Berger: Do you believe that sharing network information between > domains is not acceptable? > Adrian Farrel: No, in fact I am working on a document that facilitates > this. My issue is the mechanisms used to exchange information. > Lou Berger: At the overlay provider, what used to be called L1VPN > enhanced mode would this be acceptable? > Adrian Farrel: architecture or protocol? We did discuss solutions, three > options including an inter-domain routing protocol. > Lou Berger: In theory you support this, but you have an issue with one > of the solutions. > Adrian Farrel: > Lou Berger: Layer you communicate at Vs. ... > Adrian Farrel: My view as a WG participant is that we need to step back > and discuss the architecture, then solution work. > Oscar; When I began this work I wanted to discuss the use cases and > describe the architecture, rather than develop solutions. > Lou Berger: so maybe we should step back and review the architecture. > Actually we have other documents that discuss the work. > Julien Meuric: [slide UNI/ONI Use case] this feels like transport > recovery mechanisms being pushed into the packet layer. > Daniele Ceccarelli: The intention was to demonstrate how it is possible > mix the advantages of the two layers > Deborah Brungard: I suggest we break up the examples and post to the > list and request feedback. > Lou Berger: Happy to hear the authors are looking at taking a step back > and revisiting their drafts. When doing this please look at other > individual drafts that may have related text and work with those other > authors. Also consider the differences between UNI and ENNI, which > operate in a single layer, and the concepts of L1VPN basic and enhanced > mode which can be leveraged for cross client/server layers -- which is > perhaps what's intended by ONI. > > > 22 14:06 5 Title: Extensions to RSVP-TE for > Error Notication in GMPLS User-Network Interface (UNI) > > Draft: > http://tools.ietf.org/html/draft-ali-ccamp-gmpls-uni-error-notification-00 > > Presenter: Matt Hartley > > Igor Bryskin: What happens if the notification is not received? > The edge node will not find out. > Igor Bryskin: most of that solutions don't work. What you need is some > reliable mechanism to do it. > Matt Hartley: It'll work the way RSVP-TE always works. > Igor Bryskin: you should think about a reliable notify delivery > Lou Berger: This is a general issue with RSVP and beyond the scope of > this single document > Matt Hartley: > Cyril Margaria: This mechanisms seems to apply to UNI, we need a general > mechanism. > Lou Berger: This leads to a question that I had, why is the general > address mapping/hiding mechanism defined RFC4208 insufficient? > Matt Hartley: will have to look at that > Adrian: The question I sent on the mailing list is that what you want to > define is already there in RFC4783 > Matt Hartley: If you can send this comment to the list I can review and > comment. > Deborah Brungard: Are you looking at segment protection in the core? > Lou Berger: what you are looking for is a single error value? (Matt > Hartley: Yes) It seems it's going to be a short draft. > > > 23 14:11 8 Title: UNI Extensions for Diversity > and Latency Support > > Draft: > http://tools.ietf.org/html/draft-fedyk-ccamp-uni-extensions-02 > > Presenter: Dieter Beller > > Lou Berger: [slide - relationships with prior work] Do you think that > your document is related to Daniele's > [draft-ceccadedios-ccamp-overlay-use-cases and ] presentation? > Dieter Beller: Yes. > Lou Berger: I suggest you take advantage of the time this week and see > how these documents fit together. And then update the documents/WG > accordingly. > > > > 24 14:19 8 Title: Mutually Exclusive Link Group > (MELG) > > Draft: > http://tools.ietf.org/html/draft-beeram-ccamp-melg-01 > > Presenter: Vishnu Pavan Beeram > > Lou Berger: [slide - 4] A clarification question, is this a virtual TE > link, or an actual TE link? > Vishnu Pavan Beeram: a virtual TE link > Lou Berger: Based on existing work (RFCs), there is no distinction > between virtual TE link and an actual TE link in the client topology. > This is a significant change. > Vishnu Pavan Beeram: We can make a note of this in the document. > George Swallow: At what point would you advertise mutual exclusivity, do > you wait until it is setup? If this is the direction, how many do you > advertise, why not include this in the draft. > Igor Bryskin: we did consider this and we think to expand the concept of > SRLG. [Will poke Igor to provide his comments.] > Deborah Brungard: [poll] how many think this is interesting? not to > many, try to raise interest. > > > 25 14:27 8 Title: OSPF-TE extensions for MLNMRN > based on OTN > > Draft: > http://tools.ietf.org/html/draft-rao-ccamp-mlnmrn-otn-ospfte-ext-02 > > Presenter: Khuzema Pithewan > > Lou Berger: Do you require anything from signaling? > Khuzema Pithewan: yes, maybe yes. > Fatai Zhang: > > > 26 14:35 8 Title: GMPLS-based Hierarchy LSP > Creation in Multi-Region and Multi-Layer Networks > > Draft: > http://tools.ietf.org/html/draft-zhang-ccamp-gmpls-h-lsp-mln-05 > > Presenter: Xian Zhang > > Lou Berger: Do you need anything from routing to make the signaling work? > Cyril Margaria: You don't know where you originate > Lou Berger: I do not understand, can you discuss with the previous > authors and see if anything needs to be aligned. > Cyril Margaria: no we don't need igp extensions. > Khuzema Pithewan: If you are in a single domain you definitely need > routing extensions > Lou Berger: Please review RFC6107 as some of these mechanisms may > already be described. > > > > 27 14:43 5 Title: RSVP-TE Extensions For > Signaling GMPLS Restoration LSP > > Draft: > http://tools.ietf.org/html/draft-gandhi-ccamp-gmpls-restoration-lsp-01 > > Presenter: Gabriele Galimberti > > Igor Bryskin: why are you requesting feedbacks if 2 years ago we > presented a similar draft and there was no interest? > > Lou Berger: Cyril are you willing to work on a BCP with the authors, I > think we agree that mechanisms exist but we need to document how they > might be used. We do not have time to discuss, so let’s take this offline. > > > > 28 14:48 7 Title: Update Forced Switch Priority > > Draft: > http://tools.ietf.org/html/draft-helvoort-ccamp-fs-priority-00 > > Presenter: Huub van Helvoort > > Lou Berger: You mentioned on the list that this draft was in response to > a message that I sent. The message stated that a combined change was > needed to 4427 and 6372, but this draft only covers 4427. Also I was > mistaken in my statement WRT 4427, as it doesn't state relative > priorities. That is stated only in 6372. There are other discussions on > this topic going on, and this draft should be taken forward in a manner > consistent with those discussions. > > > 29 14:55 5 Title: RSVP-TE Extensions for Bit > Error Rate (BER) Measurement > > Draft: > http://tools.ietf.org/html/draft-zhang-ccamp-rsvpte-ber-measure-00 > > Presenter: Zhenbin Li > > Adjourn 15:00 > > > _______________________________________________ > CCAMP mailing list > CCAMP@ietf.org > https://www.ietf.org/mailman/listinfo/ccamp
- [CCAMP] rough minutes for Berlin CCAMP meetings Lou Berger
- Re: [CCAMP] rough minutes for Berlin CCAMP meetin… Adrian Farrel
- [CCAMP] Comments on draft-ietf-ccamp-lsp-diversit… Fatai Zhang