Re: Standard MTU for SJFs and support for MEF 3.0 AI payloads

["Majdi S. Abbas via NANOG" <nanog () lists nanog org>]

On Mon, Mar 09, 2026 at 07:25:11PM +0000, Carl Fredrik Lagerfeldt via NANOG wrote:
> Hi Friends!
-snip-
> Is 9530 a good value? What would you configure? (Am I simply overthinking this?)

        Given the long tail, and life of equipment in carrier Ethernet 
networks in particular, I'd probably still be configuring 9192-9216ish
in many environments.  Additional tag space could be nice*, but few have 
the luxury of greenfield builds where all the equipment is new.  Folks 
are typically working with a least common denominator around 9192 to 9216,
just in case a frame has to traverse something unexpected.  Most
customers are well conditioned today to ask for 9000, but not neccesarily 
more.

        * It's probably also worth noting that as long as equipment
vendors only support N nested tags/labels, additional MTU might not be
a huge help by itself.  

        --msa
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