Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redirect-10.txt [11/17/2019 to 12/2/2019]
Jeffrey Haas <jhaas@pfrc.org> Thu, 28 November 2019 13:21 UTC
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From: Jeffrey Haas <jhaas@pfrc.org>
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Date: Thu, 28 Nov 2019 08:21:07 -0500
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To: Sue Hares <shares@ndzh.com>
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Subject: Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redirect-10.txt [11/17/2019 to 12/2/2019]
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Sue, > On Nov 18, 2019, at 12:41 AM, Susan Hares <shares@ndzh.com> wrote: > > This begins a 2 week WG Last call on draft-idr-flowspec-path-redirect-10.txt from [11/17/2019 to 12/2/2019]. > > You can obtain the draft at: > > https://datatracker.ietf.org/doc/draft-ietf-idr-flowspec-path-redirect/ > > Consider in your review whether this draft: > > 1) Is compatible with draft-ietf-rfc5575bis-17.txt? Yes. (Close enough.) The current version of the draft is implementable. > 2) Whether the draft is useful for deployments of flow specification It can be useful. > 3) Is this technology ready for deployment? > 4) Is the write-up of this technology in draft-ietf-idr-flowspec-path-redirect clearly written and ready for publication? Ready with minor issues, IMO: Procedure-wise, there needs to be a bit more text covering cases about interactions with other traffic actions. This was a known headache for similar drafts such as redirect-to-ip. In particular, interaction with redirect-to-ip and redirect-to-vrf is needed. The text "A single flowspec rule MUST NOT have more as one indirection-id per S-ID. On a flowspec client the indirection-id with lowest S-ID MUST be imposed first for any given flowspec entry." There's no procedure for what happens in error handling when you do have more than one of the same S-ID. The text about the case for S-ID of 0 is also a bit ambiguous. It feels like it's reading "there is no sequence", but what do you do when you then have ones that do? A few IANA issues: I see the type registry is currently registered with IANA (code point 0x09). However, the sub-type registry is not established for some reason? The ID-Type field likely needs its own IANA registry. Values 1-5 are defined in this draft. The flags field (one octet) currently has 3 bits reserved. In the past, we've not done a registry for such cases (c.f. graceful restart) until we need to start carving out those reserved bits for future extensions. I leave it to the chairs' opinion whether we want this a priori or not. > > Thank you for considering this draft. > > Cheerily, Susan Hares > > _______________________________________________ > Idr mailing list > Idr@ietf.org > https://www.ietf.org/mailman/listinfo/idr
- [Idr] WG LC draft-ietf-idr-flowspec-path-redirect… Susan Hares
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Zhuangshunwan
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Wanghaibo (Rainsword)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Van De Velde, Gunter (Nokia - BE/Antwerp)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Rabadan, Jorge (Nokia - US/Mountain View)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Lizhenbin
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Jeffrey Haas
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Aissaoui, Mustapha (Nokia - CA/Ottawa)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Bidgoli, Hooman (Nokia - CA/Ottawa)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Henderickx, Wim (Nokia - BE/Antwerp)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Van De Velde, Gunter (Nokia - BE/Antwerp)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Robert Raszuk
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Gunter Van De Velde
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Robert Raszuk
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Keyur Patel
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Chengli (Cheng Li)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Dongjie (Jimmy)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Jeffrey Haas
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Jeffrey Haas
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Robert Raszuk
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Van De Velde, Gunter (Nokia - BE/Antwerp)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Van De Velde, Gunter (Nokia - BE/Antwerp)
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Robert Raszuk
- Re: [Idr] WG LC draft-ietf-idr-flowspec-path-redi… Jeffrey Haas