Re: [Int-area] 答复: Is the UDP destination port number resource running out?// re: I-D Action: draft-ietf-intarea-gue-04.txt

Joe Touch <touch@isi.edu> Sat, 20 May 2017 03:42 UTC

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To: Xuxiaohu <xuxiaohu@huawei.com>, Tom Herbert <tom@herbertland.com>
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From: Joe Touch <touch@isi.edu>
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Date: Fri, 19 May 2017 20:41:23 -0700
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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.

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.

Joe