Hi, It is the job of ingress router to impose the SID(label) stack that would include one or more pairs of ELI/EL. This is always a subject to MSD limitations (per platform/per LC if applicable). The draft is not discussing implications of these limitations , which I find rather unfortunate.
Regards, Jeff > On Feb 20, 2021, at 00:15, xiong.q...@zte.com.cn wrote: > > > Dear Dhruv,Stephane,Zhenbin Li,Tarek and WG, > > > > I just submitted a new version of the > draft-peng-pce-entropy-label-position-05. This draft has been presented in > IETF 106 and 107. Many thanks for your comments and discussions. > > > > First, I think we have the consensus that in case of inter-domain scenario, > PCE would be useful for computing both SR path and the placement of entropy > labels. We should propose a set of extensions for PCEP. > > > > Second, I fully agree with that the ingress MUST support the capability of > inserting multiple ELI/ELs and it needs to advertise the capability to PCE. > So I think we should add the capability in OPEN message from PCC to PCE. In > the current version, we define the E bit for a PCC to indicate that it > supports the capability of inserting multiple ELI/EL pairs and and supports > the results of SR path with ELP from PCE. What is your suggestion? If the E > bit is enough? Or should we define the BGP/IGP extension? > > > > Finally, thanks to Zhenbin, I need to clarify that the ELI/EL pairs are > calculated for a specific traffic flow but the placement of the ELI/EL pairs > are calculated for a SR-path. In our draft, we propose the PCEs perform > computation of SR-path with the the placement of the ELI/EL pairs and the > value of ELI/EL pairs are calculated at the ingress. > > > > I look forward and appreciate any comment and suggestion from you. > > > > Thanks, > > Quan > > > > > > 主 题 ：New Version Notification for draft-peng-pce-entropy-label-position-05.txt > > A new version of I-D, draft-peng-pce-entropy-label-position-05.txt > has been successfully submitted by Quan Xiong and posted to the > IETF repository. > > Name: draft-peng-pce-entropy-label-position > Revision: 05 > Title: PCEP Extension for SR-MPLS Entropy Label Position > Document date: 2021-02-19 > Group: Individual Submission > Pages: 9 > URL: > https://www.ietf.org/archive/id/draft-peng-pce-entropy-label-position-05.txt > Status: > https://datatracker.ietf.org/doc/draft-peng-pce-entropy-label-position/ > Htmlized: > https://datatracker.ietf.org/doc/html/draft-peng-pce-entropy-label-position > Htmlized: > https://tools.ietf.org/html/draft-peng-pce-entropy-label-position-05 > Diff: > https://www.ietf.org/rfcdiff?url2=draft-peng-pce-entropy-label-position-05 > > Abstract: > This document proposes a set of extensions for PCEP to configure the > entropy label position for SR-MPLS networks. > > > > > > Please note that it may take a couple of minutes from the time of submission > until the htmlized version and diff are available at tools.ietf.org. > > The IETF Secretariat > > > > _______________________________________________ > Pce mailing list > Pce@ietf.org > https://www.ietf.org/mailman/listinfo/pce
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