You are right, two work are complementary. The PCE-initiated SFP instantiation signaling defined in draft-wu-pce-traffic-steering-sfc-11 can be used to exchanged SFP information between PCE server and SFC Classifier. BGP Control plane defined in draft-ietf-bess-nsh-bgp-control-plane can be used to exchange SFP information or association between RD and SFP ID between the controller and SFFs. In addition, such BGP Control plane can be used to exchange SF Instance related information, not sure whether it is communicated between SF host node and the controller or between SF host node SFF node Here is the proposed change to section 7 of draft-wu-pce-traffic-steering-sfc-11 “ 7. SFP Instantiation Signaling and Forwarding Considerations
The PCE-initiated SFP instantiation signaling described in this document is exchanged between PCE server and SFC Classifier and does not assume any specific mechanism to exchange SFP information(e.g.,path identification information,metadata[I-D.ietf-sfc-nsh]) between SFFs or between SFF and SF, or between the controller and SFF and establish SFP in the data plane throughout a SFC domain. For example, such mechanism can rely upon the use of the SFC Encapsulation defined in [I-D.ietf-sfc-nsh] to exchange SFP information between SFFs or reply upon the use of BGP Control plane defined in [I-D. ietf-bess-nsh-bgp-control-plane] to exchange SFP information between the Controller and SFF. Likewise, [I-D.ietf-teas-pce-central-control] can use the signaling mechanism described in this draft to enforce SFC-inferred traffic engineering policies and provide load balancing between service function nodes. The approach that relies upon the Segment Routing technique [I-D.ietf-pce-segment-routing] can also take advantage of the signaling mechanism described in this document to support Service Path instantiation, which does not require any additional specific extension to the Segment Routing machinery. ” Let me know if this change addresses your comment? -Qin 发件人: Pce [mailto:[email protected]] 代表 Qin Wu 发送时间: 2017年3月29日 8:04 收件人: [email protected]; adrian 主题: [Pce] 答复: Update of draft-wu-pce-traffic-steering-sfc-11 Adrian: Good feedback and happy to see your proposal,:-) -Qin Sent from HUAWEI AnyOffice 发件人： adrian 收件人： Qin Wu; [email protected]<mailto:[email protected]>; 主题： RE: [Pce] Update of draft-wu-pce-traffic-steering-sfc-11 时间： 2017-03-28 18:10:27 Thanks for the update, Qin. As I said to you in private conversation, I think this is good work, in scope for the WG, and useful. The high revision number of the document reflects, I believe, that you saw the future and started the work quite a bit earlier than anyone was ready for. I think we are ready now. The one (small) thing I mentioned that I would like to see added to the draft is a small section that relates this work to draft-ietf-bess-nsh-bgp-control-plane. It seems to me that everything is compatible and all we need to do is describe briefly how the pieces it together. If you like, I can suggest text. Thanks, Adrian From: Pce [mailto:[email protected]] On Behalf Of Qin Wu Sent: 28 March 2017 00:42 To: [email protected]<mailto:[email protected]> Subject: [Pce] Update of draft-wu-pce-traffic-steering-sfc-11 Hi, All: Didn't get time to introduce PCEP extension for SFC support: Here is the update of draft-wu-pce-traffic-steering-sfc-11<https://tools.ietf.org/html/draft-wu-pce-traffic-steering-sfc-11>, https://www.ietf.org/proceedings/98/slides/slides-98-pce-42-pcep-extensions-for-sfc-00.pdf This draft provides PCEP extension to address Path computation and classification requirements defined in RFC7665 and I-D.ietf-sfc-control-plane. It is also aligned with SFC control plane and teas WG pce central control drafts. This draft has been around several IETF meetings and became stable when several dependent documents have been solid as basis. Before this meeting, we recieved a few comments from SFC chairs and it has been addressed in v-(11). We are happy to recieve additional comments if you have. Thanks! -Qin
_______________________________________________ Pce mailing list [email protected] https://www.ietf.org/mailman/listinfo/pce
