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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3DGB2312"><style>body { line-height: 1.5; }blockquote { margin-top: 0px;=
margin-bottom: 0px; margin-left: 0.5em; }body { font-size: 10.5pt; font-f=
amily: =CE=A2=C8=ED=D1=C5=BA=DA; color: rgb(0, 0, 0); line-height: 1.5; }<=
/style></head><body>=0A<div><span></span>Dear Ignas,</div><div><br></div><=
div>Thank you very much for your support and suggestion.</div><div><br></d=
iv><div>Since the problem to be solved in this draft comes from the field =
network, we only provide the method to carry standard BGP commmunities in =
IPFIX. Extended communities are ususlly used for other purposes than stand=
ard communities, such as route target, actions for BGP flowspec etc. Wheth=
er or not we really need to cover entended communities, I want to see more=
comments. Large communities are relavitely new. RFC8092 was published rec=
entlly. Anyway, however, it is easy for us to cover b<span style=3D"=
font-size: 10.5pt; line-height: 1.5; background-color: window;">oth extend=
ed communities [RFC4360] and large communities [RFC8092]</span><span style=
=3D"font-size: 10.5pt; line-height: 1.5; background-color: window;"> =
after the adoption and further comment consensus. Text contribution is wel=
come. By the way, I want to know the opinions about the wide communities. =
Do we need to cover them together?</span></div><div><span style=3D"font-si=
ze: 10.5pt; line-height: 1.5; background-color: window;"><br></span></div>=
<div><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color:=
window;">As you said, this draft was a good start. It has value to be a w=
orking group item. We can continue the comments and discussion after the a=
doption and we will improve the document according to the consensus. O</sp=
an><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color: w=
indow;">perational considerations will be covered in the next version.</sp=
an></div><div><br></div><div>Best Regards,</div><div>Zhenqiang Li</div><di=
v>China Mobile</div><blockquote style=3D"margin-top: 0px; margin-bottom: 0=
px; margin-left: 0.5em;"><div>=0A<div> </div>=0A<div>-----Original Me=
ssage-----</div>=0A<div>From: GROW [mailto:[email protected]] On Behal=
f Of Ignas Bagdonas</div>=0A<div>Sent: Tuesday, February 14, 2017 9:46 PM<=
/div>=0A<div>To: Tianran Zhou <[email protected]></div>=0A<div>=
Cc: [email protected]; [email protected]; [email protected] [email protected] &=
lt;[email protected]></div>=0A<div>Subject: Re: [GROW] [OPSAWG] WG adoption=
poll for draft-li-opsawg-ipfix-bgp-community-02</div>=0A<div> </div>=
=0A<div>Hi there,</div>=0A<div> </div>=0A<div>[Copying GROW WG as thi=
s might be relevant to their coverage areas]</div>=0A<div> </div>=0A<=
div>The document seems to be a good start but covers only standard communi=
ties. This is not sufficient given the universal deployment of 4 octet ASN=
s. Both extended communities [RFC4360] and large communities [RFC8092] are=
needed and are used to address the signalling requirements for AS4 ASNs. =
Having separate documents each addressing only a specific type of communit=
y does not seem practical and rational. The document should include the de=
finitions for IEs covering extended and large communities.</div>=0A<div>&n=
bsp;</div>=0A<div>What is the logic of selecting multiple communities for =
export that a prefix may have been decorated with? Is it all of them all t=
he time? The upper limit may be reaching 16000 standard communities per pr=
efix - would that fit into resulting IPFIX IE? If there is a limit, how do=
es it work? Is there any interpretation done on the values of the communit=
ies (all types, not just standard ones)? Those all are operational conside=
rations aspects and should be covered in the document, appendix A likely c=
ould be a good place for it.</div>=0A<div> </div>=0A<div>Security con=
siderations on the privacy aspects would to be covered.</div>=0A<div> =
;</div>=0A<div>Ignas</div>=0A<div> </div>=0A<div> </div>=0A<div>=
</div>=0A<div> </div>=0A<div>On 13/02/2017 03:36, Tianran Zhou =
wrote:</div>=0A<div>> Dear OPSAWG,</div>=0A<div>></div>=0A<div>> =
In Seoul, we got enough interest and positive response on this IPFIX IE ex=
tension draft.</div>=0A<div>> By the authors' request, this email start=
s a formal poll. The chairs would like to know if the WG participants agre=
e that the following document should be adopted as a WG document in OPSAWG=
.</div>=0A<div>></div>=0A<div>> Export BGP community information in =
IP Flow Information Export (IPFIX)</div>=0A<div>> https://tools.ietf.or=
g/html/draft-li-opsawg-ipfix-bgp-community-02</div>=0A<div>></div>=0A<d=
iv>> The adoption poll will take two weeks. Please let us know your opi=
nion by Feb 27. It would also be good to hear who is willing to review and=
/or implement or deploy the extension described in the document.</div>=0A<=
div>></div>=0A<div>> Since we already found that the majority of the=
f2f participants at our IETF97 session like this idea, please do speak up=
now if you do not agree or have serious objections (with explanation of c=
ourse).</div>=0A<div>></div>=0A<div>> Regards,</div>=0A<div>> Tia=
nran</div>=0A<div>></div>=0A<div>> _________________________________=
______________</div>=0A<div>> OPSAWG mailing list</div>=0A<div>> OPS=
[email protected]</div>=0A<div>> https://www.ietf.org/mailman/listinfo/opsaw=
g</div>=0A<div> </div>=0A<div>_______________________________________=
________</div>=0A<div>GROW mailing list</div>=0A<div>[email protected]</div>=
=0A<div>https://www.ietf.org/mailman/listinfo/grow</div>=0A</div></blockqu=
ote>=0A</body></html>
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