Re: [mpls] Poll 1: ISD and PSD in the MNA Framework

[Tony Li <[e-mail]>]

Hi all,

> MPLS working group and and the Open MPLS DT,
> 
> The working group chairs believe the current situation is:
> 
> The Framework document must be solution independent and say:
> 
> a packet may carry Ancillary Data using one or both of the following methods:
> 
>   (1) in-stack, and
> 
>   (2) post-stack.
> 
> It is up to the document specifying the Network Action to specify which
> method is to be used for which Ancillary Data.


I believe that the framework document SHOULD be solution independent, but is not quite there yet.  Small tweaks are necessary to allow NAI to not reside in-stack.


> Note, a Network Action may not require inclusion of Ancillary Data.


I disagree.  A network action MUST be able to require Ancillary Data.  Example: consider the network slice identifier function.  It may reasonably require a slice identifier be included as Ancillary Data.  Similarly, an entropy network action would require an entropy value as ancillary data.

Tony