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Re: [Spud] Extensibility (wa New Version Notification for draft-hildebrand-spud-prototype-02.txt)

"Joe Hildebrand (jhildebr)" <jhildebr@cisco.com> Mon, 09 March 2015 19:42 UTC

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From: "Joe Hildebrand (jhildebr)" <jhildebr@cisco.com>
To: Salvatore Loreto <salvatore.loreto@ericsson.com>
Thread-Topic: Extensibility (wa New Version Notification for draft-hildebrand-spud-prototype-02.txt)
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Date: Mon, 9 Mar 2015 19:42:13 +0000
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Subject: Re: [Spud] Extensibility (wa New Version Notification for draft-hildebrand-spud-prototype-02.txt)
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On 3/4/15, 11:20 AM, "Salvatore Loreto" <salvatore.loreto@ericsson.com> wrote:

>Hi Joe,
>
>extensibility is mentioned in several part of the draft 02,
>however I am missing extensibility be listed in the requirements and assumptions list
>in section 2.

I just added: 

"- SPUD must enable multiple new transport semantics without requiring updates
  to SPUD implementations in middleboxes."

I think that captures the most important of the extensibility directions.  We can edit this requirement going forward to capture other axes of extensibility.

>I would like SPUD would permit extension to provide additional info, but at same time
>I would also have a clear explanation on the limitations, i.e. where extensions are effective, when extension
>should be ignored etc.

"Must ignore (and pass along unchanged) what you don't understand" is going to be one of the most powerful agents of change we have at our disposal.  Let's make sure it's well-understood.

-- 
Joe Hildebrand

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