> -----邮件原件----- > 发件人: Joe Touch [mailto:[email protected]] > 发送时间: 2017年5月20日 12:15 > 收件人: Xuxiaohu; Tom Herbert > 抄送: [email protected] > 主题: Re: 答复: [Int-area] 答复: Is the UDP destination port number resource > running out?// re: I-D Action: draft-ietf-intarea-gue-04.txt > > > > On 5/19/2017 8:57 PM, Xuxiaohu wrote: > > Hi Joe, > > > >> -----邮件原件----- > >> 发件人: Joe Touch [mailto:[email protected]] > >> 发送时间: 2017年5月20日 11:41 > >> 收件人: Xuxiaohu; Tom Herbert > >> 抄送: [email protected] > >> 主题: Re: [Int-area] 答复: Is the UDP destination port number resource > >> running out?// re: I-D Action: draft-ietf-intarea-gue-04.txt > >> > >> > >> > >> On 5/19/2017 6:39 PM, Xuxiaohu wrote: > >>> If the saving is beneficial, it'd better to assign a dedicated port > >>> number for each UDP payload type( e.g., IP packet), rather than > >>> combining the UDP port number dedicated for GUE and the version > >>> field within the GUE header together to indicate whether the UDP > >>> payload is GUE or IP (or even other payload type if the GUE is > >>> devoted to help save the UDP port number resource for the IETF > >>> community:)) > >> FWIW, IANA strives to assign one port for a service. > > Great. Hence IPvx should be taken as a service rather than taking IPvx and > GUE as a service, IMO. > GUE is supposed to be both signalling and content (data), where the data are > IP > packets.
Since IANA strives to assign one port for a service, IP packet within the UDP tunnel should be assigned a dedicated port. In other words, GUE and IP-in-UDP are distinguished by the different port numbers. > Take away the IP part and GUE isn't an E anymore. > >> Services are expected to have version fields and subtype > >> demultiplexing indicators, to so that all message variants of current > >> and future versions can use a single port number. > > Sure, the version field within the IPvx packet could be used for > > demultiplexing > purpose. > > That demultiplexes within IPvx. There still needs to be a way to demultiplex > non-IPvx packets (control) from IPvx. Since GUE and IP-in-UDP have different UDP port numbers, I don't know why there is still a need to demultiplex GUE and IP-in-UDP. Xiaohu > Joe _______________________________________________ Int-area mailing list [email protected] https://www.ietf.org/mailman/listinfo/int-area
