[Int-area] Re: IP Parcels and Advanced Jumbos (AJs)

Fri, 27 Sep 2024 09:25:02 -0700

Content changes are not allowed in AUTH48, but We just concluded WG last call.

On Sep 27, 2024, at 8:43 AM, Templin (US), Fred L <[email protected]> wrote:



> UDP options cannot currently be used for still larger sizes

 

Actually, there is an easy fix for this which can be added to the queue for AUTH48.

 

Fred

 

From: Templin (US), Fred L <[email protected]>
Sent: Friday, September 27, 2024 8:19 AM
To: [email protected]
Cc: Tim Chown <[email protected]>; Internet Area <[email protected]>; IPv6 List <[email protected]>; tsvwg IETF list <[email protected]>
Subject: [Int-area] Re: IP Parcels and Advanced Jumbos (AJs)

 

Hi Joe,

 

>That approach to UDP jumbo grams is incompatible with UDP options.

 

IP parcels and Advanced Jumbos per my drafts are compatible with UDP options for sizes

up to ~64KB. UDP options cannot currently be used for still larger sizes, but I suspect it

will be a long time before we have to worry about that.

 

Fred

 

From: [email protected] <[email protected]>
Sent: Friday, September 27, 2024 8:13 AM
To: Templin (US), Fred L <[email protected]>
Cc: Brian E Carpenter <[email protected]>; Tom Herbert <[email protected]>; Tim Chown <[email protected]>; Internet Area <[email protected]>; IPv6 List <[email protected]>; tsvwg IETF list <[email protected]>
Subject: [EXTERNAL] Re: [Int-area] IP Parcels and Advanced Jumbos (AJs)

 

EXT email: be mindful of links/attachments.

 

 

 

On Sep 27, 2024, at 7:58 AM, Templin (US), Fred L <[email protected]> wrote:

 

Indeed. But if sendmsg() and recvmsg() can and do generate RFC2675 packets, it means that any discussion of obsoleting RFC2675 should be
off the table.


No one that I know of has suggested obsoleting RFC2675 - my documents do not say "obsoletes" (nor even "updates”).

 

That approach to UDP jumbo grams is incompatible with UDP options. 

 

And yes, there was a proposal to move that RFC to historic:

 
Jones, T., G. Fairhurst, "Change Status of RFC 2675 to Historic," draft-jones-6man-historic-rfc2675, May 2019.
 
We COULD have a new option with a longer length, but that’s not in our baseline draft.
 

Joe




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