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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3DUTF-8"><style>body { line-height: 1.5; }blockquote { margin-top: 0px; =
margin-bottom: 0px; margin-left: 0.5em; }ol, ul { margin-top: 0px; margin-=
bottom: 0px; list-style-position: inside; }body { font-size: 14px; font-fa=
mily: "Microsoft YaHei UI"; color: rgb(0, 0, 0); line-height: 1.5; }</styl=
e></head><body>=0A<div><span style=3D"text-decoration-thickness: initial; =
text-decoration-style: initial; text-decoration-color: initial;"></span><s=
ection class=3D"ybc-p" style=3D"border: 0px; font-variant-numeric: inherit=
; font-variant-east-asian: inherit; font-variant-alternates: inherit; font=
-variant-position: inherit; font-stretch: inherit; line-height: 1.7; font-=
optical-sizing: inherit; font-kerning: inherit; font-feature-settings: inh=
erit; font-variation-settings: inherit; margin: 16px 0px; padding: 0px; ve=
rtical-align: baseline; overflow-wrap: break-word; word-break: normal; let=
ter-spacing: -0.16px;"><span style=3D"text-decoration-thickness: initial; =
text-decoration-style: initial; text-decoration-color: initial;">Dear IDR =
WG,</span></section><section class=3D"ybc-p" style=3D"border: 0px; font-va=
riant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alt=
ernates: inherit; font-variant-position: inherit; font-stretch: inherit; l=
ine-height: 1.7; font-optical-sizing: inherit; font-kerning: inherit; font=
-feature-settings: inherit; font-variation-settings: inherit; margin: 16px=
 0px; padding: 0px; vertical-align: baseline; overflow-wrap: break-word; w=
ord-break: normal; letter-spacing: -0.16px;"><span style=3D"text-decoratio=
n-thickness: initial; text-decoration-style: initial; text-decoration-colo=
r: initial;">We are pleased to announce that an updated version of the&nbs=
p;<span style=3D"letter-spacing: normal;"><b>draft-yi-idr-bgp-fs-edge-serv=
ice-metadata-05</b>&nbsp;</span>has been submitted. This revision incorpor=
ates valuable feedback and suggestions from the&nbsp;<span style=3D"border=
: 0px; font-variant: inherit; font-stretch: inherit; line-height: inherit;=
 font-optical-sizing: inherit; font-kerning: inherit; font-feature-setting=
s: inherit; font-variation-settings: inherit; margin: 0px; padding: 0px; v=
ertical-align: baseline;">124th</span>&nbsp;<span style=3D"border: 0px; fo=
nt-variant: inherit; font-stretch: inherit; line-height: inherit; font-opt=
ical-sizing: inherit; font-kerning: inherit; font-feature-settings: inheri=
t; font-variation-settings: inherit; margin: 0px; padding: 0px; vertical-a=
lign: baseline;">CATS WG</span>=E2=80=8B discussions, including:</span></s=
ection><ul class=3D"ybc-ul-component" style=3D"border: 0px; font-variant-n=
umeric: inherit; font-variant-east-asian: inherit; font-variant-alternates=
: inherit; font-variant-position: inherit; font-stretch: inherit; line-hei=
ght: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-fe=
ature-settings: inherit; font-variation-settings: inherit; margin-top: 16p=
x; margin-right: 0px; margin-bottom: 16px; padding: 0px; vertical-align: b=
aseline; list-style-position: initial; list-style-image: initial; letter-s=
pacing: -0.16px; margin-left: 0px !important;"><li class=3D"ybc-li-compone=
nt ybc-li-component_ul" style=3D"border: 0px; font-variant: inherit; font-=
stretch: inherit; line-height: inherit; font-optical-sizing: inherit; font=
-kerning: inherit; font-feature-settings: inherit; font-variation-settings=
: inherit; margin-top: 0px; margin-right: 0px; margin-bottom: 10px; paddin=
g: 0px; vertical-align: baseline; align-items: baseline; display: flex; wo=
rd-break: break-word; overflow-wrap: break-word; margin-left: 0px !importa=
nt;"><span class=3D"ybc-li-component__dot-wp" style=3D"border: 0px; font-v=
ariant: inherit; font-stretch: inherit; line-height: inherit; font-optical=
-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit; f=
ont-variation-settings: inherit; margin: 0px 4px 0px 0px; padding: 0px; ve=
rtical-align: baseline; position: relative; text-align: right;"></span><sp=
an class=3D"ybc-li-component_content" style=3D"border: 0px; font-variant: =
inherit; font-stretch: inherit; line-height: inherit; font-optical-sizing:=
 inherit; font-kerning: inherit; font-feature-settings: inherit; font-vari=
ation-settings: inherit; margin: 0px; padding: 0px; vertical-align: baseli=
ne; flex: 1 1 0%; min-width: 0px;"><section class=3D"ybc-p" style=3D"borde=
r: 0px; font-variant: inherit; font-stretch: inherit; line-height: 1.7; fo=
nt-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: =
inherit; font-variation-settings: inherit; margin: 0px; padding: 0px; vert=
ical-align: baseline; overflow-wrap: break-word; word-break: normal;"><spa=
n style=3D"text-decoration-thickness: initial; text-decoration-style: init=
ial; text-decoration-color: initial;"><span style=3D"border: 0px; font-var=
iant: inherit; font-stretch: inherit; line-height: inherit; font-optical-s=
izing: inherit; font-kerning: inherit; font-feature-settings: inherit; fon=
t-variation-settings: inherit; margin: 0px; padding: 0px; vertical-align: =
baseline;">&nbsp;1.CATS work background</span>: Added detailed use cases a=
nd operational requirements for Computing-Aware Traffic Steering, providin=
g clearer context for the proposed mechanisms.</span></section></span></li=
><li class=3D"ybc-li-component ybc-li-component_ul" style=3D"border: 0px; =
font-variant: inherit; font-stretch: inherit; line-height: inherit; font-o=
ptical-sizing: inherit; font-kerning: inherit; font-feature-settings: inhe=
rit; font-variation-settings: inherit; margin-top: 0px; margin-right: 0px;=
 margin-bottom: 0px; padding: 0px; vertical-align: baseline; align-items: =
baseline; display: flex; word-break: break-word; overflow-wrap: break-word=
; margin-left: 0px !important;"><span class=3D"ybc-li-component__dot-wp" s=
tyle=3D"border: 0px; font-variant: inherit; font-stretch: inherit; line-he=
ight: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-f=
eature-settings: inherit; font-variation-settings: inherit; margin: 0px 4p=
x 0px 0px; padding: 0px; vertical-align: baseline; position: relative; tex=
t-align: right;"></span><span class=3D"ybc-li-component_content" style=3D"=
border: 0px; font-variant: inherit; font-stretch: inherit; line-height: in=
herit; font-optical-sizing: inherit; font-kerning: inherit; font-feature-s=
ettings: inherit; font-variation-settings: inherit; margin: 0px; padding: =
0px; vertical-align: baseline; flex: 1 1 0%; min-width: 0px;"><section cla=
ss=3D"ybc-p" style=3D"border: 0px; font-variant: inherit; font-stretch: in=
herit; line-height: 1.7; font-optical-sizing: inherit; font-kerning: inher=
it; font-feature-settings: inherit; font-variation-settings: inherit; marg=
in: 0px; padding: 0px; vertical-align: baseline; overflow-wrap: break-word=
; word-break: normal;"><span style=3D"text-decoration-thickness: initial; =
text-decoration-style: initial; text-decoration-color: initial;"><span sty=
le=3D"border: 0px; font-variant: inherit; font-stretch: inherit; line-heig=
ht: inherit; font-optical-sizing: inherit; font-kerning: inherit; font-fea=
ture-settings: inherit; font-variation-settings: inherit; margin: 0px; pad=
ding: 0px; vertical-align: baseline;">&nbsp;2. Metric references</span>: E=
xpanded content on L2 normalized metrics, aligning with CATS metric defini=
tions to enhance technical consistency.</span></section></span></li></ul><=
section class=3D"ybc-p" style=3D"border: 0px; font-variant-numeric: inheri=
t; font-variant-east-asian: inherit; font-variant-alternates: inherit; fon=
t-variant-position: inherit; font-stretch: inherit; line-height: 1.7; font=
-optical-sizing: inherit; font-kerning: inherit; font-feature-settings: in=
herit; font-variation-settings: inherit; margin: 16px 0px; padding: 0px; v=
ertical-align: baseline; overflow-wrap: break-word; word-break: normal; le=
tter-spacing: -0.16px;"><span style=3D"text-decoration-thickness: initial;=
 text-decoration-style: initial; text-decoration-color: initial;"><span st=
yle=3D"background-color: rgba(0, 0, 0, 0); color: rgb(0, 0, 0);">This&nbsp=
;draft addresses&nbsp;the&nbsp;CATS&nbsp;WG's&nbsp;focus&nbsp;on&nbsp;dist=
ributing&nbsp;compute&nbsp;metrics&nbsp;and&nbsp;steering&nbsp;traffic&nbs=
p;for&nbsp;improved&nbsp;service&nbsp;performance.</span>&nbsp;</span></se=
ction><section class=3D"ybc-p" style=3D"border: 0px; font-variant-numeric:=
 inherit; font-variant-east-asian: inherit; font-variant-alternates: inher=
it; font-variant-position: inherit; font-stretch: inherit; line-height: 1.=
7; font-optical-sizing: inherit; font-kerning: inherit; font-feature-setti=
ngs: inherit; font-variation-settings: inherit; margin: 16px 0px; padding:=
 0px; vertical-align: baseline; overflow-wrap: break-word; word-break: nor=
mal; letter-spacing: -0.16px;"><span style=3D"text-decoration-thickness: i=
nitial; text-decoration-style: initial; text-decoration-color: initial;">W=
e warmly welcome any suggestions, comments, or discussions to further refi=
ne the draft. Your insights are highly appreciated.</span></section><secti=
on class=3D"ybc-p" style=3D"border: 0px; font-variant-numeric: inherit; fo=
nt-variant-east-asian: inherit; font-variant-alternates: inherit; font-var=
iant-position: inherit; font-stretch: inherit; line-height: 1.7; font-opti=
cal-sizing: inherit; font-kerning: inherit; font-feature-settings: inherit=
; font-variation-settings: inherit; margin: 16px 0px; padding: 0px; vertic=
al-align: baseline; overflow-wrap: break-word; word-break: normal; letter-=
spacing: -0.16px;"><span style=3D"text-decoration-thickness: initial; text=
-decoration-style: initial; text-decoration-color: initial;">Best regards,=
</span></section></div>=0A<div>Xinxin</div><div><span><div style=3D"MARGIN=
: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10pt"><div style=3D"font-size: 10=
pt; font-family: =E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91;"></div></div></span=
></div>=0A<blockquote style=3D"margin-Top: 0px; margin-Bottom: 0px; margin=
-Left: 0.5em; margin-Right: inherit"><div>&nbsp;</div><div style=3D"border=
:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style=
=3D"PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tah=
oma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: =
8px"><div><b>From:</b>&nbsp;<a href=3D"mailto:internet-drafts@ietf.org">in=
ternet-drafts</a></div><div><b>Date:</b>&nbsp;2025-11-14&nbsp;16:22</div><=
div><b>To:</b>&nbsp;<a href=3D"mailto:zengguanming@huawei.com">Guanming Ze=
ng</a>; <a href=3D"mailto:hanmy12@chinaunicom.cn">Mengyao Han</a>; <a href=
=3D"mailto:yixx3@chinaunicom.cn">Xinxin Yi</a></div><div><b>Subject:</b>&n=
bsp;New Version Notification for draft-yi-idr-bgp-fs-edge-service-metadata=
-05.txt</div></div></div><div><div><br></div>=0A<div>draft-yi-idr-bgp-fs-e=
dge-service-metadata-05.txt has been successfully</div>=0A<div>submitted b=
y Xinxin Yi and posted to the</div>=0A<div>IETF repository.</div>=0A<div>&=
nbsp;</div>=0A<div>Name:&nbsp;&nbsp;&nbsp;&nbsp; draft-yi-idr-bgp-fs-edge-=
service-metadata</div>=0A<div>Revision: 05</div>=0A<div>Title:&nbsp;&nbsp;=
&nbsp; Distribution of Service Metadata in BGP FlowSpec</div>=0A<div>Date:=
&nbsp;&nbsp;&nbsp;&nbsp; 2025-11-13</div>=0A<div>Group:&nbsp;&nbsp;&nbsp; =
Individual Submission</div>=0A<div>Pages:&nbsp;&nbsp;&nbsp; 8</div>=0A<div=
>URL:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; https://www.ietf.org/archive/id/draft-=
yi-idr-bgp-fs-edge-service-metadata-05.txt</div>=0A<div>Status:&nbsp;&nbsp=
; https://datatracker.ietf.org/doc/draft-yi-idr-bgp-fs-edge-service-metada=
ta/</div>=0A<div>HTMLized: https://datatracker.ietf.org/doc/html/draft-yi-=
idr-bgp-fs-edge-service-metadata</div>=0A<div>Diff:&nbsp;&nbsp;&nbsp;&nbsp=
; https://author-tools.ietf.org/iddiff?url2=3Ddraft-yi-idr-bgp-fs-edge-ser=
vice-metadata-05</div>=0A<div>&nbsp;</div>=0A<div>Abstract:</div>=0A<div>&=
nbsp;</div>=0A<div>&nbsp;&nbsp; In edge computing and distributed cloud en=
vironments, a service may</div>=0A<div>&nbsp;&nbsp; be deployed on multipl=
e instances across one or more sites, referred</div>=0A<div>&nbsp;&nbsp; t=
o as edge service.&nbsp; The edge service is typically associated with an<=
/div>=0A<div>&nbsp;&nbsp; ANYCAST IP address.&nbsp; With the emergence of =
Computing-Aware Traffic</div>=0A<div>&nbsp;&nbsp; Steering (CATS) requirem=
ents, there is a growing need to consider</div>=0A<div>&nbsp;&nbsp; both n=
etwork and computing metrics when making traffic steering</div>=0A<div>&nb=
sp;&nbsp; decisions.&nbsp; Traditional routing protocols lack the capabili=
ty to</div>=0A<div>&nbsp;&nbsp; convey compute-related information, necess=
itating extensions to</div>=0A<div>&nbsp;&nbsp; existing protocols.</div>=
=0A<div>&nbsp;</div>=0A<div>&nbsp;&nbsp; This draft defines a mechanism to=
 distribute service routes along</div>=0A<div>&nbsp;&nbsp; with computing-=
related metadata using BGP FlowSpec.&nbsp; The service</div>=0A<div>&nbsp;=
&nbsp; metadata, including compute resource status and performance metrics=
,</div>=0A<div>&nbsp;&nbsp; can be collected by a central controller, proc=
essed, and then</div>=0A<div>&nbsp;&nbsp; distributed to ingress routers u=
sing BGP FlowSpec extensions.&nbsp; This</div>=0A<div>&nbsp;&nbsp; enables=
 ingress routers to make path selections based not only on</div>=0A<div>&n=
bsp;&nbsp; routing cost but also on the running environment and resource</=
div>=0A<div>&nbsp;&nbsp; availability of edge services, thereby optimizing=
 Quality of</div>=0A<div>&nbsp;&nbsp; Experience (QoE).</div>=0A<div>&nbsp=
;</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A<div>The IETF Secretaria=
t</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A<div=
>&nbsp;</div>=0A</div></blockquote>=0A</body></html>
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