Re: [PWE3] Mandatory Control Word

	Is this your personal opinion speaking as a vendor with lots of said equipment, or as an AD?

	--Tom


> From
> 
> draft-delregno-pwe3-mandatory-control-word/
> 
> =======
> 2.  Mandatory Control Word
> 
>   The Control Word SHALL be mandatory for all PWE3 encapsulations.  The
>   use of the sequence number remains OPTIONAL.
> 
>   As a result of the Control Word being Mandatory, all implementations
>   of the PWE3 encapsulations SHALL follow Section 6.1 of [RFC4447]
>   wherein the "PWs MUST have c=1".  This requirement SHALL remain until
>   such time, if ever, RFC4447 is superceded and the support for Control
>   Word negotiation is removed as a result of this mandate.
> 
> ======
> 
> Given the reality of network deployments I do not see how we can
> talk about removing the requirement to negotiate the CW in any
> realistic time frame.
> 
> It's fine to require the CW for all new PW types, and it's
> probably OK to RECOMMEND operation with the CW, but it's
> unrealistic to remove the option given the extent of the deployed
> systems.
> 
> - Stewart
> 
> 
> 
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