It doesn't matter whether or not it's already there. IMHO, given the popularity of different overlay technologies such as VXLAN and MPLS-in-UDP in practice, GUE initially and mainly targeted as a DC overlay approach has little change to be widely deployed within data centers. As such, if the only possible applicability of GUE is for directly carrying IP over UDP, I don't understand why we need such a overhead associated with the variation of GUE. In another word, why not directly assign a port to indicate IP-in-UDP, instead of using the GUE protocol variant number to indicate. By the way, this the GUE protocol variant number usage reminds me of the notorious misuse of the first nibble of the MPLS payload to indicate the type of the MPLS payload:) Xiaohu
------------------------------------------------------------------From:Joe Touch <[email protected]>Send Time:2018年5月16日(星期三) 15:45To:徐小虎(义先) <[email protected]>Cc:Tom Herbert <[email protected]>; Internet Area <[email protected]>; intarea-chairs <[email protected]>; draft-xu-intarea-ip-in-udp <[email protected]>Subject:Re: [Int-area] 回复： Request a WG adoption call for draft-xu-intarea-ip-in-udp It’s not complex. It’s already there. So there continues to be no reason to waste either a port number or further time discussing this draft. Joe On May 15, 2018, at 9:01 PM, 徐小虎(义先) <[email protected]> wrote: IMHO，there seems no need to introduce such complexity into GUE just for the purpose of saving one port number. Xiaohu 来自钉钉专属商务邮箱------------------------------------------------------------------ 发件人：Tom Herbert<[email protected]> 日 期：2018年05月16日 11:55:49 收件人：徐小虎(义先)<[email protected]> 抄 送：Erik Kline<[email protected]>; Internet Area<[email protected]>; draft-xu-intarea-ip-in-udp<[email protected]>; intarea-chairs<[email protected]> 主 题：Re: [Int-area] Request a WG adoption call for draft-xu-intarea-ip-in-udp On Tue, May 15, 2018 at 8:33 PM, 徐小虎(义先) <[email protected]> wrote: > Hi Eric, > > Good question. This draft (draft-xu-intarea-ip-in-udp) describes a native > UDP encapsulation scheme for IP packets, which is straightforward and > light-weighted, just as MPLS-in-UDP [RFC7510] and TRILL-in-UDP > (https://tools.ietf.org/html/draft-ietf-trill-over-ip-16#page-20) and etc. > GUE variant 1 implements native UDP encapsulation for IPv4 and IPv6. Except for a different port number, there is no protocol difference between that and doing IP in UDP as separate protocol. Tom > Best regards, > Xiaohu > > ------------------------------------------------------------------ > From:Erik Kline <[email protected]> > Send Time:2018年5月16日(星期三) 11:07 > To:徐小虎(义先) <[email protected]> > Cc:intarea-chairs <[email protected]>; > draft-xu-intarea-ip-in-udp <[email protected]>; > Internet Area <[email protected]> > Subject:Re: [Int-area] Request a WG adoption call for > draft-xu-intarea-ip-in-udp > > Should this document make some comment about its relation, or lack of > relation, to https://tools.ietf.org/html/draft-ietf-intarea-gue ? > On Wed, 16 May 2018 at 11:53, 徐小虎(义先) <[email protected]> > wrote: > >> Hi co-chairs, > >> We would like to request a WG adoption call for this draft ( > https://tools.ietf.org/html/draft-xu-intarea-ip-in-udp-07) since it has > been stable enough and the solution as described in this draft is needed in > practice. > >> Best regards, >> Xiaohu (on behalf of all co-authors) >> _______________________________________________ >> Int-area mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/int-area > > > > _______________________________________________ > Int-area mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/int-area > _______________________________________________ Int-area mailing list [email protected] https://www.ietf.org/mailman/listinfo/int-area
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