Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt
"Les Ginsberg (ginsberg)" <ginsberg@cisco.com> Wed, 03 August 2022 14:05 UTC
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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: Huaimo Chen <huaimo.chen@futurewei.com>, "Les Ginsberg (ginsberg)" <ginsberg=40cisco.com@dmarc.ietf.org>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt
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Date: Wed, 03 Aug 2022 13:58:14 +0000
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Subject: Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt
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Huaimo - Thanx for addressing my comments so quickly. Changes look fine - but I do have one question. You eliminated the text: > "Note that if each of BitPosition > and DrEndBitPosition uses more than 2 octets, we use 4 or more octets > for each of them." Does this mean you have no need to ever support more than 16 bits in these fields?? Les > -----Original Message----- > From: BIER <bier-bounces@ietf.org> On Behalf Of Huaimo Chen > Sent: Tuesday, August 2, 2022 7:59 PM > To: Les Ginsberg (ginsberg) <ginsberg=40cisco.com@dmarc.ietf.org>; > bier@ietf.org > Subject: Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt > > Hi Les, > > Thank you very much for your valuable comments. > I have addressed them in the updated draft (uploaded). > My responses are also inline below with [HC]. > > Best Regards, > Huaimo > -----Original Message----- > From: BIER <bier-bounces@ietf.org> On Behalf Of Les Ginsberg (ginsberg) > Sent: Friday, July 29, 2022 4:59 PM > To: bier@ietf.org > Subject: Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt > > Some pedantic comments on this draft: > > For the new BIER-TE sub-TLV: > > 1)The relevant registry has been renamed to be "IS-IS Sub-TLVs for TLVs > Advertising Neighbor Information". Please use this new name. > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww > w.iana.org%2Fassignments%2Fisis-tlv-codepoints%2Fisis-tlv- > codepoints.xhtml%23isis-tlv-codepoints-advertising-neighbor- > information&data=05%7C01%7Chuaimo.chen%40futurewei.com%7C5b > bd38c256024261ea5608da71a546c0%7C0fee8ff2a3b240189c753a1d5591fedc% > 7C1%7C0%7C637947251926210034%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi > MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C300 > 0%7C%7C%7C&sdata=ybC6zOJkG1sRe%2FQosV23MElysXHkg7jnHS70N > %2Bf7bpE%3D&reserved=0 > [HC]: I have renamed it as you suggested. > > 2)Please do NOT insert padding to keep content aligned on a 4 byte > boundary. This may be useful for OSPF, but it is not for IS-IS as TLVs are NOT > aligned inside an LSP. All you are doing is wasting space - which is precious in > IS-IS given the limited LSP space. > [HC]: Removed padding. > > 3)You say in Section 2: > > "Note that if each of BitPosition > and DrEndBitPosition uses more than 2 octets, we use 4 or more octets > for each of them." > > I do not see how the receiver of the sub-TLV could tell whether the 2 octet or > 4 octet encoding was sent as you have nothing that specifies the length of > these fields. > You can't use the total length of the sub-TLV as it could include optional sub- > sub-TLVs. > > ?? > [HC]: Deleted the quoted text. > > 4)In IANA section, I do not know why you specified "N" for TLVs 23 and 223. > While RFC 5311 (which defines these TLVs) is not popular, if there was an > implementation, I see no reason why it should be invalid to send the BIER-TE > info in these TLVs. > [HC]: Changed "n" to "y" for TLVs 23 and 223. > > Thanx. > > Les > > > > -----Original Message----- > > From: BIER <bier-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org > > Sent: Friday, July 29, 2022 12:13 PM > > To: i-d-announce@ietf.org > > Cc: bier@ietf.org > > Subject: [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt > > > > > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > > This draft is a work item of the Bit Indexed Explicit Replication WG of the > IETF. > > > > Title : IS-IS Extensions for BIER-TE > > Authors : Huaimo Chen > > Mike McBride > > Aijun Wang > > Gyan S. Mishra > > Yanhe Fan > > Lei Liu > > Xufeng Liu > > Filename : draft-ietf-bier-te-isis-01.txt > > Pages : 7 > > Date : 2022-07-29 > > > > Abstract: > > This document describes IS-IS extensions for distributing > > BitPositions configured on the links in "Bit Index Explicit > > Replication Traffic Engineering" (BIER-TE) domain. > > > > > > > > The IETF datatracker status page for this draft is: > > > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdata > tracker.ietf.org%2Fdoc%2Fdraft-ietf-bier-te- > isis%2F&data=05%7C01%7Chuaimo.chen%40futurewei.com%7C5bbd38 > c256024261ea5608da71a546c0%7C0fee8ff2a3b240189c753a1d5591fedc%7C1 > %7C0%7C637947251926210034%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC > 4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000% > 7C%7C%7C&sdata=99ojCa2m%2BTeMk0OfxeifsmVrhvNaK7jQJp0fu0syR > N8%3D&reserved=0 > > > > There is also an htmlized version available at: > > > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdata > tracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-ietf-bier-te-isis- > 01&data=05%7C01%7Chuaimo.chen%40futurewei.com%7C5bbd38c256 > 024261ea5608da71a546c0%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0 > %7C637947251926210034%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA > wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C > %7C&sdata=%2F8qaH0ZvQBAfGM4WIre0jpcI6As7wjXjdqbxOfdGHxo%3 > D&reserved=0 > > > > A diff from the previous version is available at: > > > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww > w.ietf.org%2Frfcdiff%3Furl2%3Ddraft-ietf-bier-te-isis- > 01&data=05%7C01%7Chuaimo.chen%40futurewei.com%7C5bbd38c256 > 024261ea5608da71a546c0%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0 > %7C637947251926210034%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA > wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C > %7C&sdata=L77o0dGWGuSwL9vSm1Durc56Fl5zONoDq%2F8ij12v9lc%3D > &reserved=0 > > > > > > Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts > > > > > > _______________________________________________ > > BIER mailing list > > BIER@ietf.org > > > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww > w.ietf.org%2Fmailman%2Flistinfo%2Fbier&data=05%7C01%7Chuaimo.c > hen%40futurewei.com%7C5bbd38c256024261ea5608da71a546c0%7C0fee8ff > 2a3b240189c753a1d5591fedc%7C1%7C0%7C637947251926210034%7CUnkno > wn%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1 > haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=em5K2lvVvXwkSl > ye1egSX%2BgtdfeqDArSsAycQJTPArI%3D&reserved=0 > > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww > w.ietf.org%2Fmailman%2Flistinfo%2Fbier&data=05%7C01%7Chuaimo.c > hen%40futurewei.com%7C5bbd38c256024261ea5608da71a546c0%7C0fee8ff > 2a3b240189c753a1d5591fedc%7C1%7C0%7C637947251926210034%7CUnkno > wn%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1 > haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=em5K2lvVvXwkSl > ye1egSX%2BgtdfeqDArSsAycQJTPArI%3D&reserved=0 > > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier
- [Bier] I-D Action: draft-ietf-bier-te-isis-01.txt internet-drafts
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Huaimo Chen
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Toerless Eckert
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… zhang.zheng
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Acee Lindem (acee)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Acee Lindem (acee)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Acee Lindem (acee)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… zhang.zheng
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Toerless Eckert
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Jeffrey (Zhaohui) Zhang
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Jeffrey (Zhaohui) Zhang
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Toerless Eckert
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Huaimo Chen
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Huaimo Chen
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Huaimo Chen
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Les Ginsberg (ginsberg)
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Toerless Eckert
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Huaimo Chen
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Huaimo Chen
- Re: [Bier] I-D Action: draft-ietf-bier-te-isis-01… Toerless Eckert