Hi Liyan, Many thanks for your review of the document. Please see replies inline with <RG>....
On Wed, Jun 4, 2025 at 4:53 AM Liyan Gong <[email protected]> wrote: > Hi All, > > This draft comprehensively details procedures for leveraging the STAMP to > measure performance in Segment Routing networks (SR-MPLS/SRv6). Especially, > the new extension of STAMP to support new modes (one-way, loopback, and > timestamp-and-forward) significantly enhances scalability and practicality > for operational deployments. > <RG> Yes. Thanks. > Below are some suggestions for further discussion. > > 1. > > It will be better to add descriptions of Business Edition (BE) > scenarios, covering both the SR-MPLS and SRv6 planes, to ensure the > document encompasses all SR situations. > > <RG> The procedures are described for SR Policy and Flex-Algo but are also applicable to BE scenarios. We can update it in the next revision. > > 1. > > The document hints at the capability negotiation mechanisms for the > newly defined MNA.TSF and End.TSF in sections 7.1.2 and 7.2.2, but without > specifics. Detailed elaboration is suggested. > > <RG> The behaviour is defined via a local configuration, given that it is an informational draft. <RG> If there is an interest in the WG, they can be also specified using a standards track document via IANA allocated code points. > > 1. > > It's advised to outline clock synchronization requirements separately > for one-way and two-way measurements, as well as for packet-loss > measurement. This would better inform real network deployments. > > <RG> There is some text in the document already but we can elaborate it further in the next revision. Section 4. ..... The one-way delay requires the clocks on the Session-Sender and Session-Reflector to be synchronized using either PTPv2 or NTPv4. Thanks, Rakesh Best Regards, > > Liyan > > > *From:* internet-drafts <[email protected]> > *Date:* 2025-05-09 21:52 > *To:* [email protected] > *CC:* spring <[email protected]> > *Subject:* [spring] I-D Action: draft-ietf-spring-stamp-srpm-18.txt > Internet-Draft draft-ietf-spring-stamp-srpm-18.txt is now available. It is > a > work item of the Source Packet Routing in Networking (SPRING) WG of the > IETF. > > Title: Performance Measurement Using Simple Two-Way Active > Measurement Protocol (STAMP) for Segment Routing Networks > Authors: Rakesh Gandhi > Clarence Filsfils > Bart Janssens > Mach(Guoyi) Chen > Richard Foote > Name: draft-ietf-spring-stamp-srpm-18.txt > Pages: 53 > Dates: 2025-05-09 > > Abstract: > > Segment Routing (SR) leverages the source routing paradigm and > applies to both Multiprotocol Label Switching (SR-MPLS) and IPv6 > (SRv6) data planes. This document describes procedures for > Performance Measurement in SR networks using the Simple Two-Way > Active Measurement Protocol (STAMP) defined in RFC 8762, along with > its optional extensions defined in RFC 8972 and further augmented in > RFC 9503. The described procedure is used for links and SR paths > (including SR Policies and SR IGP Flexible Algorithm paths), as well > as Layer-3 and Layer-2 services in SR networks, and is applicable to > both SR-MPLS and SRv6 data planes. > > The IETF datatracker status page for this Internet-Draft is: > https://datatracker.ietf.org/doc/draft-ietf-spring-stamp-srpm/ > > There is also an HTML version available at: > https://www.ietf.org/archive/id/draft-ietf-spring-stamp-srpm-18.html > > A diff from the previous version is available at: > https://author-tools.ietf.org/iddiff?url2=draft-ietf-spring-stamp-srpm-18 > > Internet-Drafts are also available by rsync at: > rsync.ietf.org::internet-drafts > > > _______________________________________________ > spring mailing list -- [email protected] > To unsubscribe send an email to [email protected] > > > _______________________________________________ > spring mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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