[OPSAWG]Re: Fw: New Version Notification for draft-song-op sawg-ipfix-ecn-00.txt
Greg Mirsky <[email protected]> Sat, 10 Jan 2026 13:59:56 -0800
| Newsgroups | gmane.ietf.opsawg,gmane.ietf.tsvwg,gmane.ietf.mpls |
|---|---|
| Message-ID | <CA+RyBmWrneCE99Ju_g_4w+Ajfb=RM1iBJQP6595Z35=0ESFQXg@mail.gmail.com> |
--===============2808008424199414060== Content-Type: multipart/alternative; boundary="000000000000d9a18306480fc396" --000000000000d9a18306480fc396 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Xueyan, thank you for sharing the updated draft. A relatively new draft draft-halmir-mpls-ecn <https://datatracker.ietf.org/doc/draft-halmir-mpls-ecn/> on supporting ECN in the MPLS using MNA might be of interest to you and others involved in the matter. And I have a question. As I understand the ECN, it is a host that is expected to act on the information collected in the ECN field along the path of a packet. If that is correct, who's the intended target of the IPFIX notification about the ECN? Is the intention to act on ECN information obtained on a segment, e.g., a tunnel, rather than based on the e2e ECN information? I read Section 5, but was left with these questions. Regards, Greg On Fri, Jan 9, 2026 at 1:53=E2=80=AFAM <[email protected]> wrote: > Hello OPSAWG and TSVWG, > > > We submited a new draft and posted it in the IETF datatracker > <https://datatracker.ietf.org/doc/draft-song-opsawg-ipfix-ecn/> > https://datatracker.ietf.org/doc/draft-song-opsawg-ipfix-ecn/ > > The following IPFIX information elements are introduced for L4S ECN > monitoring: > > - ECN field capture in protocol layer, including ECN field in IPv4/IPv6 > ECN field, MPLS EXP and tunnel ECN negotiation status > > - ECN codepoint statistics, including incremenatl and total count for > non-ECT, ECT(0), ECT(1) and CE packets > > - L4S performance indicator, providing short-term and long-term view of > congestion experienced by L4S traffic > > > Your review, comments and questions are welcome. > > > Best regards, > > Xueyan > > > Original > *From: *[email protected] <[email protected]> > *To: *=E5=AE=8B=E9=9B=AA=E9=9B=8100038118;=E5=88=98=E5=B0=A700165286; > *Date: *2025=E5=B9=B412=E6=9C=8826=E6=97=A5 16:33 > *Subject: **New Version Notification for > draft-song-opsawg-ipfix-ecn-00.txt* > A new version of Internet-Draft draft-song-opsawg-ipfix-ecn-00.txt has be= en > successfully submitted by Xueyan Song and posted to the > IETF repository. > > Name: draft-song-opsawg-ipfix-ecn > Revision: 00 > Title: Export of L4S ECN in IP Flow Information Export (IPFIX) > Date: 2025-12-26 > Group: Individual Submission > Pages: 14 > URL: > https://www.ietf.org/archive/id/draft-song-opsawg-ipfix-ecn-00.txt > Status: https://datatracker.ietf.org/doc/draft-song-opsawg-ipfix-ecn/ > HTML: > https://www.ietf.org/archive/id/draft-song-opsawg-ipfix-ecn-00.html > HTMLized: > https://datatracker.ietf.org/doc/html/draft-song-opsawg-ipfix-ecn > > > Abstract: > > This document defines a set of IP Flow Information Export (IPFIX) > Information Elements for monitoring the Low Latency, Low Loss, and > Scalable throughput (L4S) service. Specially, these elements enable > network operators to monitor the Explicit Congestion Notification > (ECN) information of L4S deployment and performance of traffic. > > > > The IETF Secretariat > > > _______________________________________________ > OPSAWG mailing list -- [email protected] > To unsubscribe send an email to [email protected] > --000000000000d9a18306480fc396 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Hi Xueyan,<div>thank you for sharing the updated draft. A= =C2=A0relatively new draft=C2=A0<a href=3D"https://datatracker.ietf.org/doc= /draft-halmir-mpls-ecn/">draft-halmir-mpls-ecn</a>=C2=A0on supporting ECN i= n the MPLS using MNA might be of interest to you and others involved in the= matter. And I have a question. As I understand the ECN, it is a host that = is expected to act on the information collected in the ECN field along the = path of a packet. If that is correct, who's the intended target of the = IPFIX notification about the ECN? Is the intention to act on ECN informatio= n obtained on a segment, e.g., a tunnel, rather than based on the e2e ECN i= nformation? I read Section 5, but was left with these questions.</div><div>= <br></div><div>Regards,</div><div>Greg</div></div><br><div class=3D"gmail_q= uote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, J= an 9, 2026 at 1:53=E2=80=AFAM <<a href=3D"mailto:[email protected]= ">[email protected]</a>> wrote:<br></div><blockquote class=3D"gmai= l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,20= 4,204);padding-left:1ex"><div><p style=3D"font-size:14px;font-family:=E5=BE= =AE=E8=BD=AF=E9=9B=85=E9=BB=91,"Microsoft YaHei"">Hello OPSAWG an= d TSVWG,</p><p style=3D"font-size:14px;font-family:=E5=BE=AE=E8=BD=AF=E9=9B= =85=E9=BB=91,"Microsoft YaHei""><br></p><p style=3D"font-size:14p= x;font-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,"Microsoft YaHei&qu= ot;">We submited a new draft and posted it in the IETF datatracker=C2=A0<a = href=3D"https://datatracker.ietf.org/doc/draft-song-opsawg-ipfix-ecn/" targ= et=3D"_blank"></a><a href=3D"https://datatracker.ietf.org/doc/draft-song-op= sawg-ipfix-ecn/" target=3D"_blank">https://datatracker.ietf.org/doc/draft-s= ong-opsawg-ipfix-ecn/</a></p><p style=3D"font-size:14px;font-family:=E5=BE= =AE=E8=BD=AF=E9=9B=85=E9=BB=91,"Microsoft YaHei"">The following I= PFIX information elements are introduced for L4S ECN monitoring:</p><p styl= e=3D"font-size:14px;font-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,"= Microsoft YaHei"">- ECN field capture in protocol layer, including ECN= field in IPv4/IPv6 ECN field, MPLS EXP and tunnel ECN negotiation status</= p><p style=3D"font-size:14px;font-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB= =91,"Microsoft YaHei"">- ECN codepoint statistics, including incr= emenatl and total count for non-ECT, ECT(0), ECT(1) and CE packets</p><p st= yle=3D"font-size:14px;font-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,&quo= t;Microsoft YaHei"">- L4S performance indicator, providing short-term = and long-term view of congestion experienced by L4S traffic</p><p style=3D"= font-size:14px;font-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,"Micro= soft YaHei""><br></p><p style=3D"font-size:14px;font-family:=E5=BE=AE= =E8=BD=AF=E9=9B=85=E9=BB=91,"Microsoft YaHei"">Your review, comme= nts and questions are welcome.</p><p style=3D"font-size:14px;font-family:= =E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,"Microsoft YaHei""><br></p><= p style=3D"font-size:14px;font-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,= "Microsoft YaHei"">Best regards,</p><p style=3D"font-size:14px;fo= nt-family:=E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91,"Microsoft YaHei""= >Xueyan</p><p style=3D"display:none"><label></label><span></span></p><p sty= le=3D"margin:0px;line-height:20px"><br></p><div style=3D"display:block"><di= v style=3D"width:100%;height:28px;line-height:28px;background-color:rgb(224= ,229,233);color:rgb(19,136,255);text-align:center">Original</div><div id=3D= "m_-3763961488533818572zwriteHistoryContainer"><div><div style=3D"padding:8= px;background-color:rgb(245,246,248)"><div><strong>From:=C2=A0</strong><spa= n><a href=3D"mailto:[email protected]" target=3D"_blank">internet-dr= [email protected]</a> <<a href=3D"mailto:[email protected]" target=3D= "_blank">[email protected]</a>></span></div><div><strong>To:=C2= =A0</strong><span style=3D"display:inline">=E5=AE=8B=E9=9B=AA=E9=9B=8100038= 118;</span><span style=3D"display:inline">=E5=88=98=E5=B0=A700165286;</span= ></div><div><strong>Date:=C2=A0</strong><span>2025=E5=B9=B412=E6=9C=8826=E6= =97=A5 16:33</span></div><div><strong>Subject:=C2=A0</strong><span><strong>= New Version Notification for draft-song-opsawg-ipfix-ecn-00.txt</strong></s= pan></div></div><div>A=C2=A0new=C2=A0version=C2=A0of=C2=A0Internet-Draft=C2= =A0draft-song-opsawg-ipfix-ecn-00.txt=C2=A0has=C2=A0been<br>successfully=C2= =A0submitted=C2=A0by=C2=A0Xueyan=C2=A0Song=C2=A0and=C2=A0posted=C2=A0to=C2= =A0the<br>IETF=C2=A0repository.<br> <br>Name:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= draft-song-opsawg-ipfix-ecn<br>Revision:=C2=A000<br>Title:=C2=A0=C2=A0=C2= =A0=C2=A0Export=C2=A0of=C2=A0L4S=C2=A0ECN=C2=A0in=C2=A0IP=C2=A0Flow=C2=A0In= formation=C2=A0Export=C2=A0(IPFIX)<br>Date:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A020= 25-12-26<br>Group:=C2=A0=C2=A0=C2=A0=C2=A0Individual=C2=A0Submission<br>Pag= es:=C2=A0=C2=A0=C2=A0=C2=A014<br>URL:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0<a= href=3D"https://www.ietf.org/archive/id/draft-song-opsawg-ipfix-ecn-00.txt= " target=3D"_blank">https://www.ietf.org/archive/id/draft-song-opsawg-ipfix= -ecn-00.txt</a><br>Status:=C2=A0=C2=A0=C2=A0<a href=3D"https://datatracker.= ietf.org/doc/draft-song-opsawg-ipfix-ecn/" target=3D"_blank">https://datatr= acker.ietf.org/doc/draft-song-opsawg-ipfix-ecn/</a><br>HTML:=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0<a href=3D"https://www.ietf.org/archive/id/draft-song-opsawg= -ipfix-ecn-00.html" target=3D"_blank">https://www.ietf.org/archive/id/draft= -song-opsawg-ipfix-ecn-00.html</a><br>HTMLized:=C2=A0<a href=3D"https://dat= atracker.ietf.org/doc/html/draft-song-opsawg-ipfix-ecn" target=3D"_blank">h= ttps://datatracker.ietf.org/doc/html/draft-song-opsawg-ipfix-ecn</a><br> <b= r> <br>Abstract:<br> <br>=C2=A0=C2=A0=C2=A0This=C2=A0document=C2=A0defines= =C2=A0a=C2=A0set=C2=A0of=C2=A0IP=C2=A0Flow=C2=A0Information=C2=A0Export=C2= =A0(IPFIX)<br>=C2=A0=C2=A0=C2=A0Information=C2=A0Elements=C2=A0for=C2=A0mon= itoring=C2=A0the=C2=A0Low=C2=A0Latency,=C2=A0Low=C2=A0Loss,=C2=A0and<br>=C2= =A0=C2=A0=C2=A0Scalable=C2=A0throughput=C2=A0(L4S)=C2=A0service.=C2=A0=C2= =A0Specially,=C2=A0these=C2=A0elements=C2=A0enable<br>=C2=A0=C2=A0=C2=A0net= work=C2=A0operators=C2=A0to=C2=A0monitor=C2=A0the=C2=A0Explicit=C2=A0Conges= tion=C2=A0Notification<br>=C2=A0=C2=A0=C2=A0(ECN)=C2=A0information=C2=A0of= =C2=A0L4S=C2=A0deployment=C2=A0and=C2=A0performance=C2=A0of=C2=A0traffic.<b= r> <br> <br> <br>The=C2=A0IETF=C2=A0Secretariat<br> <br></div></div></div><= /div><p><br></p></div>_______________________________________________<br> OPSAWG mailing list -- <a href=3D"mailto:[email protected]" target=3D"_blank"= >[email protected]</a><br> To unsubscribe send an email to <a href=3D"mailto:[email protected]" ta= rget=3D"_blank">[email protected]</a><br> </blockquote></div> --000000000000d9a18306480fc396-- --===============2808008424199414060== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KT1BTQVdHIG1h aWxpbmcgbGlzdCAtLSBvcHNhd2dAaWV0Zi5vcmcKVG8gdW5zdWJzY3JpYmUgc2VuZCBhbiBlbWFp bCB0byBvcHNhd2ctbGVhdmVAaWV0Zi5vcmcK --===============2808008424199414060==--