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.
Thanks in advance. Aijun Wang China Telecom > On Jan 7, 2020, at 18:14, Robert Raszuk <rob...@raszuk.net> wrote: > > > Hi Aijun, > > Right .. I took your email as an attempt/request to actually advertise > passive links in the first place. > > 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 ? > > Thx, > R. > > >> On Tue, Jan 7, 2020 at 2:08 AM Aijun Wang <wangai...@tsinghua.org..cn> wrote: >> Hi, Robert: >> >> >> >> 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. >> >> It seems the sub-TLV within this TLV is not the appropriate place to put >> this information? >> >> >> >> P.S. I changed the thread to reflect the conversion topic. >> >> >> >> Best Regards. >> >> >> >> Aijun Wang >> >> China Telecom >> >> >> >> 发件人: lsr-boun...@ietf.org [mailto:lsr-boun...@ietf.org] 代表 Robert Raszuk >> 发送时间: 2020年1月6日 18:58 >> 收件人: Aijun Wang >> 抄送: Les Ginsberg (ginsberg); lsr@ietf.org >> 主题: Re: [Lsr] 答复: Is it necessary to expand the IS-IS level to 8? >> >> >> >> Aijun, >> >> >> >> We just want to distinguish the passive interfaces from other normal >> interfaces within ISIS domain. It seems that the “Attribute Flags” that >> described in https://tools.ietf.org/html/rfc7794#section-2.1 is the most >> appropriate place to extend to carry such information. >> >> >> >> Really ? >> >> >> >> IMO much better place is to define new sub-TLV of TLV-22 and mark it there >> as passive link. >> >> >> >> Ref: https://tools..ietf.org/html/rfc5029 >> >> >> >> 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 ? >> >> >> >> Thx, >> R. >> >> >> > _______________________________________________ > Lsr mailing list > Lsr@ietf.org > https://www.ietf.org/mailman/listinfo/lsr
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