Re: Methods to label the passive interfaces within ISIS
[email protected] Thu, 9 Jan 2020 19:59:41 -0800
| Newsgroups | gmane.ietf.isis |
|---|---|
| Message-ID | <BCA056AC-76B2-45B6-9FD0-61A5EBFC740C__19659.5679082506$1578628862$gmane$org@tony.li> |
--===============3086997181894601246== Content-Type: multipart/alternative; boundary="Apple-Mail=_D566FC87-D454-40B2-B83C-042B7A199623" --Apple-Mail=_D566FC87-D454-40B2-B83C-042B7A199623 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Aijun, Thank you for your draft. First off, a =E2=80=98passive interface=E2=80=99 is a particular user = interface phrase used by one very particular vendor. It=E2=80=99s not a = particularly accurate description, either. For example, a =E2=80=98passive= =E2=80=99 interface implies that it might accept protocol packets, but would not be active and send things on that = interface. That might have been meaningful in the distance vector days, = but we=E2=80=99re decades past that now. The =E2=80=99stub link=E2=80=99 = designation=20 sounds more accurate. But that=E2=80=99s just naming. As to mechanism, it seems to me that we already have the mechanisms that = you want. Specifically, RFC 5029 already gives us a way of capturing = link attributes. It would seem to me that all you need is a code point = from that registry and you=E2=80=99d be done. I=E2=80=99d recommend you = direct your draft in that direction. Regards, Tony > On Jan 9, 2020, at 6:22 PM, Aijun Wang <[email protected]> = wrote: >=20 > Hi, Les, Robert and other experts within LSR: > =20 > We have submitted the draft that related to the passive interface = attribute, please review it at = https://tools.ietf.org/html/draft-wang-lsr-passive-interface-attribute-00 = <https://tools.ietf.org/html/draft-wang-lsr-passive-interface-attribute-00= > > =20 > If you are interested, we are also welcome you as the co-author to put = forward it together. > Any comments are welcome. > =20 > Thanks in advance. > =20 > =20 > Best Regards. > =20 > Aijun Wang > China Telecom > =20 > =E5=8F=91=E4=BB=B6=E4=BA=BA: [email protected] = [mailto:[email protected]] =E4=BB=A3=E8=A1=A8 Aijun Wang > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2020=E5=B9=B41=E6=9C=887=E6=97=A5 = 18:57 > =E6=94=B6=E4=BB=B6=E4=BA=BA: Robert Raszuk > =E6=8A=84=E9=80=81: Les Ginsberg (ginsberg); [email protected] > =E4=B8=BB=E9=A2=98: Re: [Lsr] Methods to label the passive interfaces = within ISIS > =20 > Hi, Robert: > There are situations that we want to distinguish the passive = interfaces from the normal interfaces. I will try to write one draft in = recent days to describe it and for further discussion. > =20 > Thanks in advance. >=20 > Aijun Wang > China Telecom >=20 >=20 > On Jan 7, 2020, at 18:14, Robert Raszuk <[email protected] = <mailto:[email protected]>> wrote: >=20 >> =EF=BB=BF >> Hi Aijun, >> =20 >> Right .. I took your email as an attempt/request to actually = advertise passive links in the first place.=20 >> =20 >> May we know what difference does it make to you if reachable prefix = is part of an active vs passive interface from IGP point of view ?=20 >> =20 >> Thx, >> R. >> =20 >> =20 >> On Tue, Jan 7, 2020 at 2:08 AM Aijun Wang <[email protected] = <mailto:[email protected]>> wrote: >>> Hi, Robert: >>> =20 >>> Thanks for your information. >>> TLV-22 is used to describe the IS neighbor and the link between = them. As for the passive interfaces, there may be no neighbor.=20 >>> It seems the sub-TLV within this TLV is not the appropriate place to = put this information? >>> =20 >>> P.S. I changed the thread to reflect the conversion topic. >>> =20 >>> Best Regards. >>> =20 >>> Aijun Wang >>> China Telecom >>> =20 >>> =E5=8F=91=E4=BB=B6=E4=BA=BA: [email protected] = <mailto:[email protected]> [mailto:[email protected] = <mailto:[email protected]>] =E4=BB=A3=E8=A1=A8 Robert Raszuk >>> =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2020=E5=B9=B41=E6=9C=886=E6=97=A5= 18:58 >>> =E6=94=B6=E4=BB=B6=E4=BA=BA: Aijun Wang >>> =E6=8A=84=E9=80=81: Les Ginsberg (ginsberg); [email protected] = <mailto:[email protected]> >>> =E4=B8=BB=E9=A2=98: Re: [Lsr] =E7=AD=94=E5=A4=8D: Is it necessary to = expand the IS-IS level to 8? >>> =20 >>> Aijun, >>> =20 >>>> We just want to distinguish the passive interfaces from other = normal interfaces within ISIS domain. It seems that the =E2=80=9CAttribut= e Flags=E2=80=9D that described in = https://tools.ietf.org/html/rfc7794#section-2.1 = <https://tools.ietf.org/html/rfc7794#section-2.1> is the most = appropriate place to extend to carry such information. >>> =20 >>> Really ? >>> =20 >>> IMO much better place is to define new sub-TLV of TLV-22 and mark it = there as passive link. >>> =20 >>> Ref: https://tools..ietf.org/html/rfc5029 = <https://tools.ietf.org/html/rfc5029> >>> =20 >>> Now more interesting perhaps is to find out how ISIS is supposed to = react to such information. Or is the intention to carry it just as an = opaque info say for show commands use only ?=20 >>> =20 >>> Thx, >>> R. >>> =20 >>=20 >> _______________________________________________ >> Lsr mailing list >> [email protected] <mailto:[email protected]> >> https://www.ietf.org/mailman/listinfo/lsr = <https://www.ietf.org/mailman/listinfo/lsr>_______________________________= ________________ > Lsr mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/lsr --Apple-Mail=_D566FC87-D454-40B2-B83C-042B7A199623 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div = class=3D""><br class=3D""></div>Hi Aijun,<div class=3D""><br = class=3D""></div><div class=3D"">Thank you for your draft.</div><div = class=3D""><br class=3D""></div><div class=3D"">First off, a =E2=80=98pass= ive interface=E2=80=99 is a particular user interface phrase used by one = very particular vendor. It=E2=80=99s not a particularly accurate = description, either. For example, a =E2=80=98passive=E2=80=99 interface = implies that it might</div><div class=3D"">accept protocol packets, but = would not be active and send things on that interface. That might = have been meaningful in the distance vector days, but we=E2=80=99re = decades past that now. The =E2=80=99stub link=E2=80=99 = designation </div><div class=3D"">sounds more accurate.</div><div = class=3D""><br class=3D""></div><div class=3D"">But that=E2=80=99s just = naming.</div><div class=3D""><br class=3D""></div><div class=3D"">As to = mechanism, it seems to me that we already have the mechanisms that you = want. Specifically, RFC 5029 already gives us a way of capturing link = attributes. It would seem to me that all you need is a code point from = that registry and you=E2=80=99d be done. I=E2=80=99d recommend you = direct your draft in that direction.</div><div class=3D""><br = class=3D""></div><div class=3D"">Regards,</div><div = class=3D"">Tony</div><div class=3D""><br class=3D""></div><div = class=3D""><br class=3D""></div><div class=3D""><br class=3D""></div><div = class=3D""><div><br class=3D""><blockquote type=3D"cite" class=3D""><div = class=3D"">On Jan 9, 2020, at 6:22 PM, Aijun Wang <<a = href=3D"mailto:[email protected]" = class=3D"">[email protected]</a>> wrote:</div><br = class=3D"Apple-interchange-newline"><div class=3D""><div = class=3D"WordSection1" style=3D"page: WordSection1; caret-color: rgb(0, = 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; = font-variant-caps: normal; font-weight: normal; letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; = text-decoration: none;"><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: Calibri, = sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi, Les, Robert and = other experts within LSR:<o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D""><o:p class=3D""> </o:p></span></div><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">We have = submitted the draft that related to the passive interface attribute, = please review it at </span><span lang=3D"EN-US" class=3D""><a = href=3D"https://tools.ietf.org/html/draft-wang-lsr-passive-interface-attri= bute-00" style=3D"color: purple; text-decoration: underline;" = class=3D"">https://tools.ietf.org/html/draft-wang-lsr-passive-interface-at= tribute-00</a><o:p class=3D""></o:p></span></div><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""><o:p = class=3D""> </o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">If you are = interested, we are also welcome you as the co-author to put forward it = together.<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm = 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">Any comments = are welcome.<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm = 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p = class=3D""> </o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">Thanks in = advance.<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p = class=3D""> </o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p = class=3D""> </o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93; text-align: = justify;" class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; = font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D"">Best Regards.<o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B= =E4=BD=93; text-align: justify;" class=3D""><span lang=3D"EN-US" = style=3D"font-size: 10.5pt; font-family: Calibri, sans-serif; color: = rgb(31, 73, 125);" class=3D""><o:p = class=3D""> </o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93; text-align: = justify;" class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; = font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D"">Aijun Wang<o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B= =E4=BD=93; text-align: justify;" class=3D""><span lang=3D"EN-US" = style=3D"font-size: 10.5pt; font-family: Calibri, sans-serif; color: = rgb(31, 73, 125);" class=3D"">China Telecom</span><span lang=3D"EN-US" = style=3D"font-size: 10.5pt; font-family: Calibri, sans-serif; color: = rgb(31, 73, 125);" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D""><o:p class=3D""> </o:p></span></div><div class=3D""><div = style=3D"border-style: solid none none; border-top-width: 1pt; = border-top-color: rgb(181, 196, 223); padding: 3pt 0cm 0cm;" = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><b class=3D""><span = style=3D"font-size: 10pt;" class=3D"">=E5=8F=91=E4=BB=B6=E4=BA=BA<span = lang=3D"EN-US" class=3D"">:</span></span></b><span lang=3D"EN-US" = style=3D"font-size: 10pt;" class=3D""><span = class=3D"Apple-converted-space"> </span><a = href=3D"mailto:[email protected]" class=3D"">[email protected]</a> = [<a href=3D"mailto:[email protected]" = class=3D"">mailto:[email protected]</a>]<span = class=3D"Apple-converted-space"> </span></span><b class=3D""><span = style=3D"font-size: 10pt;" class=3D"">=E4=BB=A3=E8=A1=A8<span = class=3D"Apple-converted-space"> </span></span></b><span = lang=3D"EN-US" style=3D"font-size: 10pt;" class=3D"">Aijun Wang<br = class=3D""></span><b class=3D""><span style=3D"font-size: 10pt;" = class=3D"">=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4<span lang=3D"EN-US" = class=3D"">:</span></span></b><span lang=3D"EN-US" style=3D"font-size: = 10pt;" class=3D""><span = class=3D"Apple-converted-space"> </span>2020</span><span = style=3D"font-size: 10pt;" class=3D"">=E5=B9=B4<span lang=3D"EN-US" = class=3D"">1</span>=E6=9C=88<span lang=3D"EN-US" = class=3D"">7</span>=E6=97=A5<span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>18:57<br class=3D""></span><b= class=3D"">=E6=94=B6=E4=BB=B6=E4=BA=BA<span lang=3D"EN-US" = class=3D"">:</span></b><span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>Robert Raszuk<br = class=3D""></span><b class=3D"">=E6=8A=84=E9=80=81<span lang=3D"EN-US" = class=3D"">:</span></b><span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>Les Ginsberg (ginsberg); <a = href=3D"mailto:[email protected]" class=3D"">[email protected]</a><br = class=3D""></span><b class=3D"">=E4=B8=BB=E9=A2=98<span lang=3D"EN-US" = class=3D"">:</span></b><span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>Re: [Lsr] Methods to label = the passive interfaces within ISIS<o:p = class=3D""></o:p></span></span></div></div></div><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""><o:p = class=3D""> </o:p></span></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">Hi, Robert:<o:p = class=3D""></o:p></span></div><div class=3D""><div style=3D"margin: 0cm = 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">There are situations that we = want to distinguish the passive interfaces from the normal interfaces. I = will try to write one draft in recent days to describe it and for = further discussion.<o:p class=3D""></o:p></span></div></div><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D""><o:p class=3D""> </o:p></span></div></div><div = class=3D""><p class=3D"MsoNormal" style=3D"margin: 0cm 0cm 12pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;"><span lang=3D"EN-US" = class=3D"">Thanks in advance.<o:p class=3D""></o:p></span></p><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D"">Aijun Wang<o:p class=3D""></o:p></span></div><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D"">China Telecom<o:p = class=3D""></o:p></span></div></div></div><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D""><br = class=3D""><br class=3D""><o:p class=3D""></o:p></span></div><p = class=3D"MsoNormal" style=3D"margin: 0cm 0cm 12pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;"><span lang=3D"EN-US" class=3D"">On Jan = 7, 2020, at 18:14, Robert Raszuk <<a href=3D"mailto:[email protected]" = style=3D"color: purple; text-decoration: underline;" = class=3D"">[email protected]</a>> wrote:<o:p = class=3D""></o:p></span></p></div><blockquote style=3D"margin-top: 5pt; = margin-bottom: 5pt;" class=3D"" type=3D"cite"><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D"">=EF=BB=BF<= o:p class=3D""></o:p></span></div><div class=3D""><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D"">Hi = Aijun,<o:p class=3D""></o:p></span></div></div><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D""><o:p = class=3D""> </o:p></span></div></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">Right .. I took = your email as an attempt/request to actually advertise passive = links in the first place. <o:p class=3D""></o:p></span></div><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D""><o:p class=3D""> </o:p></span></div></div><div = class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" class=3D"">May we know what difference does it make to = you if reachable prefix is part of an active vs passive interface from = IGP point of view ? <o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""><o:p = class=3D""> </o:p></span></div></div><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D"">Thx,<o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">R.<o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""><o:p = class=3D""> </o:p></span></div></div></div></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D""><o:p = class=3D""> </o:p></span></div><div class=3D""><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D"">On Tue, = Jan 7, 2020 at 2:08 AM Aijun Wang <<a = href=3D"mailto:[email protected]" style=3D"color: purple; = text-decoration: underline;" class=3D"">[email protected]</a>>= wrote:<o:p class=3D""></o:p></span></div></div><blockquote = style=3D"border-style: none none none solid; border-left-width: 1pt; = border-left-color: rgb(204, 204, 204); padding: 0cm 0cm 0cm 6pt; = margin-left: 4.8pt; margin-right: 0cm;" class=3D"" type=3D"cite"><div = class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: Calibri, = sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi, Robert:</span><span = lang=3D"EN-US" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D""> </span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"font-family: Calibri, sans-serif; color: rgb(31, = 73, 125);" class=3D"">Thanks for your information.</span><span = lang=3D"EN-US" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D"">TLV-22 is used to describe the IS neighbor and the link = between them. As for the passive interfaces, there may be no = neighbor.<span class=3D"Apple-converted-space"> </span></span><span = lang=3D"EN-US" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D"">It seems the sub-TLV within this TLV is not the appropriate = place to put this information?</span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: Calibri, = sans-serif; color: rgb(31, 73, 125);" class=3D""> </span><span = lang=3D"EN-US" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D"">P.S. I changed the thread to reflect the conversion = topic.</span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: Calibri, = sans-serif; color: rgb(31, 73, 125);" class=3D""> </span><span = lang=3D"EN-US" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B= =E4=BD=93; text-align: justify;" class=3D""><span lang=3D"EN-US" = style=3D"font-size: 10.5pt; font-family: Calibri, sans-serif; color: = rgb(31, 73, 125);" class=3D"">Best Regards.</span><span lang=3D"EN-US" = class=3D""><o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm = 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93; = text-align: justify;" class=3D""><span lang=3D"EN-US" style=3D"font-size: = 10.5pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" = class=3D""> </span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93; text-align: justify;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">Aijun = Wang</span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93; text-align: justify;" = class=3D""><span lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: = Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">China = Telecom</span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"font-size: 10.5pt; font-family: Calibri, = sans-serif; color: rgb(31, 73, 125);" class=3D""> </span><span = lang=3D"EN-US" class=3D""><o:p class=3D""></o:p></span></div><div = style=3D"border-style: solid none none; border-top-width: 1pt; = border-top-color: rgb(181, 196, 223); padding: 3pt 0cm 0cm;" = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><b class=3D""><span = style=3D"font-size: 10pt;" class=3D"">=E5=8F=91=E4=BB=B6=E4=BA=BA<span = lang=3D"EN-US" class=3D"">:</span></span></b><span lang=3D"EN-US" = style=3D"font-size: 10pt;" class=3D""><span = class=3D"Apple-converted-space"> </span><a = href=3D"mailto:[email protected]" target=3D"_blank" style=3D"color: = purple; text-decoration: underline;" = class=3D"">[email protected]</a><span = class=3D"Apple-converted-space"> </span>[mailto:<a = href=3D"mailto:[email protected]" target=3D"_blank" style=3D"color: = purple; text-decoration: underline;" = class=3D"">[email protected]</a>]<span = class=3D"Apple-converted-space"> </span></span><b class=3D""><span = style=3D"font-size: 10pt;" class=3D"">=E4=BB=A3=E8=A1=A8<span = class=3D"Apple-converted-space"> </span></span></b><span = lang=3D"EN-US" style=3D"font-size: 10pt;" class=3D"">Robert Raszuk<br = class=3D""></span><b class=3D""><span style=3D"font-size: 10pt;" = class=3D"">=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4<span lang=3D"EN-US" = class=3D"">:</span></span></b><span lang=3D"EN-US" style=3D"font-size: = 10pt;" class=3D""><span = class=3D"Apple-converted-space"> </span>2020</span><span = style=3D"font-size: 10pt;" class=3D"">=E5=B9=B4<span lang=3D"EN-US" = class=3D"">1</span>=E6=9C=88<span lang=3D"EN-US" = class=3D"">6</span>=E6=97=A5<span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>18:58<br class=3D""></span><b= class=3D"">=E6=94=B6=E4=BB=B6=E4=BA=BA<span lang=3D"EN-US" = class=3D"">:</span></b><span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>Aijun Wang<br = class=3D""></span><b class=3D"">=E6=8A=84=E9=80=81<span lang=3D"EN-US" = class=3D"">:</span></b><span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>Les Ginsberg = (ginsberg);<span class=3D"Apple-converted-space"> </span><a = href=3D"mailto:[email protected]" target=3D"_blank" style=3D"color: purple; = text-decoration: underline;" class=3D"">[email protected]</a><br = class=3D""></span><b class=3D"">=E4=B8=BB=E9=A2=98<span lang=3D"EN-US" = class=3D"">:</span></b><span lang=3D"EN-US" class=3D""><span = class=3D"Apple-converted-space"> </span>Re: [Lsr]<span = class=3D"Apple-converted-space"> </span></span>=E7=AD=94=E5=A4=8D<spa= n lang=3D"EN-US" class=3D"">: Is it necessary to expand the IS-IS level = to 8?</span></span><span lang=3D"EN-US" class=3D""><o:p = class=3D""></o:p></span></div></div><div style=3D"margin: 0cm 0cm = 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""> <o:p = class=3D""></o:p></span></div><div class=3D""><div class=3D""><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D"">Aijun,<o:p class=3D""></o:p></span></div></div><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D""> <o:p class=3D""></o:p></span></div></div><blockquote = style=3D"border-style: none none none solid; border-left-width: 1pt; = border-left-color: rgb(204, 204, 204); padding: 0cm 0cm 0cm 6pt; = margin-left: 4.8pt; margin-top: 5pt; margin-right: 0cm;" class=3D"" = type=3D"cite"><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; = font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span = lang=3D"EN-US" style=3D"color: rgb(31, 73, 125);" class=3D"">We just = want to distinguish the passive interfaces from other normal interfaces = within ISIS domain. It seems that the =E2=80=9CAttribute Flags=E2=80= =9D that described in<span = class=3D"Apple-converted-space"> </span></span><span lang=3D"EN-US" = class=3D""><a href=3D"https://tools.ietf.org/html/rfc7794#section-2.1" = target=3D"_blank" style=3D"color: purple; text-decoration: underline;" = class=3D"">https://tools.ietf.org/html/rfc7794#section-2.1</a><span = style=3D"color: rgb(31, 73, 125);" class=3D""><span = class=3D"Apple-converted-space"> </span>is the most appropriate = place to extend to carry such information.</span><o:p = class=3D""></o:p></span></div></div></blockquote><div class=3D""><div = style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: = =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" class=3D""> <o:p= class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin:= 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">Really ?<o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""> <o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">IMO much better place is to = define new sub-TLV of TLV-22 and mark it there as passive link.<o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""> <o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">Ref: <a = href=3D"https://tools.ietf.org/html/rfc5029" target=3D"_blank" = style=3D"color: purple; text-decoration: underline;" = class=3D"">https://tools..ietf.org/html/rfc5029</a><o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""> <o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D"">Now more interesting perhaps = is to find out how ISIS is supposed to react to such information. Or is = the intention to carry it just as an opaque info say for show commands = use only ? <o:p class=3D""></o:p></span></div></div><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D""> <o:p class=3D""></o:p></span></div></div><div = class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D"">Thx,<br class=3D"">R.<o:p = class=3D""></o:p></span></div></div><div class=3D""><div style=3D"margin: = 0cm 0cm 0.0001pt; font-size: 12pt; font-family: =E5=AE=8B=E4=BD=93;" = class=3D""><span lang=3D"EN-US" class=3D""> <o:p = class=3D""></o:p></span></div></div></div></div></div></div></blockquote><= /div><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; = font-family: =E5=AE=8B=E4=BD=93;" class=3D""><span lang=3D"EN-US" = class=3D"">_______________________________________________<br = class=3D"">Lsr mailing list<br class=3D""><a href=3D"mailto:[email protected]" = style=3D"color: purple; text-decoration: underline;" = class=3D"">[email protected]</a><br class=3D""><a = href=3D"https://www.ietf.org/mailman/listinfo/lsr" style=3D"color: = purple; text-decoration: underline;" = class=3D"">https://www.ietf.org/mailman/listinfo/lsr</a><o:p = class=3D""></o:p></span></div></div></blockquote></div></div><span = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 14px; font-style: normal; font-variant-caps: normal; font-weight: = normal; letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none; float: none; = display: inline !important;" = class=3D"">_______________________________________________</span><br = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 14px; font-style: normal; font-variant-caps: normal; font-weight: = normal; letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none;" class=3D""><span = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 14px; font-style: normal; font-variant-caps: normal; font-weight: = normal; letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none; float: none; = display: inline !important;" class=3D"">Lsr mailing list</span><br = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 14px; font-style: normal; font-variant-caps: normal; font-weight: = normal; letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none;" class=3D""><span = style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: = 14px; font-style: normal; font-variant-caps: normal; font-weight: = normal; letter-spacing: normal; text-align: start; text-indent: 0px; = text-transform: none; white-space: normal; word-spacing: 0px; = -webkit-text-stroke-width: 0px; text-decoration: none; float: none; = display: inline !important;" class=3D""><a href=3D"mailto:[email protected]" = class=3D"">[email protected]</a></span><br style=3D"caret-color: rgb(0, 0, = 0); font-family: Helvetica; font-size: 14px; font-style: normal; = font-variant-caps: normal; font-weight: normal; letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; = text-decoration: none;" class=3D""><span style=3D"caret-color: rgb(0, 0, = 0); font-family: Helvetica; font-size: 14px; font-style: normal; = font-variant-caps: normal; font-weight: normal; letter-spacing: normal; = text-align: start; text-indent: 0px; text-transform: none; white-space: = normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; = text-decoration: none; float: none; display: inline !important;" = class=3D""><a href=3D"https://www.ietf.org/mailman/listinfo/lsr" = class=3D"">https://www.ietf.org/mailman/listinfo/lsr</a></span></div></blo= ckquote></div><br class=3D""></div></body></html>= --Apple-Mail=_D566FC87-D454-40B2-B83C-042B7A199623-- --===============3086997181894601246== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Lsr mailing list [email protected] https://www.ietf.org/mailman/listinfo/lsr --===============3086997181894601246==--