Re: [bess] WG Last Call for draft-ietf-bess-evpn-prefix-advertisement-04
Eric C Rosen <erosen@juniper.net> Tue, 21 February 2017 14:41 UTC
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To: Martin Vigoureux <martin.vigoureux@nokia.com>, BESS <bess@ietf.org>
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From: Eric C Rosen <erosen@juniper.net>
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Date: Tue, 21 Feb 2017 09:41:54 -0500
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Archived-At: <https://mailarchive.ietf.org/arch/msg/bess/eXeBr0tAnTSWbAYBwAT9Cqip67s>
Subject: Re: [bess] WG Last Call for draft-ietf-bess-evpn-prefix-advertisement-04
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While I would like to see this document advance eventually, I don't think it is ready yet. Main points: - There is no clear explanation of the key concept of "overlay index". In particular, there is no real explanation of when to use an overlay index, or of when to use each kind of overlay index. There are some use case descriptions, and some examples of the sort "in this use case use this kind of overlay index", but no rules that specify the precise circumstances under which it is appropriate to use each kind of overlay index. - There are no rules given that say how an NVE knows whether to originate an RT-5 route, or knows how to construct an RT-5 route. A number of use cases are walked through, which is helpful, but that is not a substitute for a real specification. - In the discussion of use case, there are statements like "support of this use case is REQUIRED". But it is very difficult to know exactly which features of the protocol are being mandated. - Too much of the draft is the "RT-5's are good" sale pitch, which is repeated three times. (Sections 2.2, 4, and 6.) A single time would do. - The talk of IP-VRFs is a bit misleading, as this might be taken to suggest that the document provides a way to interoperate L3VPN with EVPN. I've attached the draft with some more comments in-line, look for lines beginning with ****.
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Eric C Rosen
- [bess] WG Last Call for draft-ietf-bess-evpn-pref… Martin Vigoureux
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Patrice Brissette (pbrisset)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Henderickx, Wim (Nokia - BE)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Rabadan, Jorge (Nokia - US)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Acee Lindem (acee)
- Re: [bess] [ALU] WG Last Call for draft-ietf-bess… Oya Luengo, Roberto (Nokia - US)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Gaurav Dawra (gdawra)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Liu, Hua
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Jeff Tantsura
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Ali Sajassi (sajassi)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… John E Drake
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Eric C Rosen
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Jeffrey (Zhaohui) Zhang
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Martin Vigoureux
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Rabadan, Jorge (Nokia - US/Mountain View)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Rabadan, Jorge (Nokia - US/Mountain View)
- Re: [bess] WG Last Call for draft-ietf-bess-evpn-… Rabadan, Jorge (Nokia - US/Mountain View)