Hi, Olivier: Thanks for your review and comments. The main aim of this draft is to illustrate the scenarios that are useful for the TE in Native IP network. It is the base document for the following two drafts: https://datatracker.ietf.org/doc/draft-ietf-teas-pce-native-ip/ (Solution document) https://datatracker.ietf.org/doc/draft-ietf-pce-pcep-extension-native-ip (PCEP extension document) The simulation part of this draft just want to express that we have finished the algorithm that can compute the E2E optimal path based not only on the IGP metric, and also the algorithm to eliminate the temporal congestion in the simulated network. The simulated network is the same size and complex as our real network, also the traffic matrix distribution. The detailed algorithm can be found at another paper(https://ieeexplore.ieee.org/document/8657733 " A Practical Traffic Control Scheme With Load Balancing Based on PCE Architecture ") that I will refer to it in upcoming update version. The link or node failures consideration will be covered in the solution draft. Mike from Cisco gives also us some thoughts on this aspect. I will update the draft in recent days, wish it can give you more information for your concern. Thanks in advance. Best Regards. Aijun Wang China Telecom -----邮件原件----- 发件人: teas-bounces@xxxxxxxx [mailto:teas-bounces@xxxxxxxx] 代表 Olivier Bonaventure via Datatracker 发送时间: 2019年9月28日 3:57 收件人: tsv-art@xxxxxxxx 抄送: draft-ietf-teas-native-ip-scenarios.all@xxxxxxxx; ietf@xxxxxxxx; teas@xxxxxxxx 主题: [Teas] Tsvart last call review of draft-ietf-teas-native-ip-scenarios-08 Reviewer: Olivier Bonaventure Review result: Not Ready This document has been reviewed as part of the transport area review team's ongoing effort to review key IETF documents. These comments were written primarily for the transport area directors, but are copied to the document's authors and WG to allow them to address any issues raised and also to the IETF discussion list for information. When done at the time of IETF Last Call, the authors should consider this review as part of the last-call comments they receive. Please always CC tsv-art@xxxxxxxx if you reply to or forward this review. This draft is an unusual draft since it describes simulation results for a technology that is described in other drafts. From the transport area viewpoint, I do not see any specific point to report about this draft. However, as a researcher with some knowledge of traffic engineering techniques, I'm surprised by the content of the draft. It is unusual for the IETF to publish drafts that describe simulation results. Such results are typically presented at scientific conference or published in journals and are peer-reviewed. Unfortunately, this draft does not provide results that validate the performance of the proposed technique from a traffic engineering viewpoint. I have two main concerns about the overall content of the draft. First, there is no discussion on how the proposed technique would react to link or node failures although these events are key in many networks. Second, there is no detailed explanation on how the simulation has been conducted in terms of traffic matrix, link capacities, ... The graphs provide a comparison between OSPF and the proposed solution, but the draft does not explain how the OSPF weights have been computed while there are many techniques in the literature and in production networks that tune the OSPF weights for traffic engineering purposes. Ignoring these existing techniques is misleading. I do not consider that this draft brings useful information about the technology described in the companion documents. _______________________________________________ Teas mailing list Teas@xxxxxxxx https://www.ietf.org/mailman/listinfo/teas
