Subject: Re: IETF-54 PLD questions

From: Stewart Bryant <[email-masked]>
Date: Fri, 04 Oct 2002 14:38:08 +0100

>>I will assume that no response means retain the diagrams.
>>
>>2) Is the MPLS CW sufficiently generic for this text (it hails 
>>from Martini, but does not specify bit allocations or sizes)?
> 
> 
> 
> No it is not generic. So I think it is better to make it generic, such
> as:
> 
> 
>           +---------------------+
>           |      Payload        |
>           /=====================\
>           H Payload Convergence H-----------------+
>           H---------------------H                 |
>           H       Timing        H                 |
>           H---------------------H                 |
>           H     Sequencing      H-----------------|
>           \=====================/                 |                  
>           |  PW Demultiplexer   |---+             |                  
>           +---------------------+   |             |                  
>           |  PSN Convergence    |-----------------|
>           +---------------------+   |             |      
>           |        PSN          |-+ |             v       
>           +---------------------+ | |  +--------------------------------+
>           |    MAC/Data-link    | | |  | Flags, Frag, Len, Seq #, etc   |
>           +---------------------+ | |  +--------------------------------+
>           |       Physical      | | +->|          Inner Label           |
>           +---------------------+ |    +--------------------------------+
>                                   +--->| Outer Label or MPLS-in-IP encap|
>                                        +--------------------------------+
> 
> 
>>I will assume that no response means that it is sufficiently 
>>generic.
>>
>>If you think that it is not sufficiently generic, please supply
>>alternative text.

I have replaced Fig 11 with the diagram above, but have not moved the
old Fig 11 to an appendix. Does anyone thing that the document needs
the old diagram (below for reference) or possibly one that
is even more prescriptive in terms of bit assignments in the CW?

   +---------------------+
   |      Payload        |
   /=====================\
   H Payload Convergence H-----------------+
   H---------------------H                 |
   H       Timing        H                 |
   H---------------------H                 |
   H     Sequencing      H------------------------------------+
   \=====================/                 |                  |
   |  PW Demultiplexer   |---+             |                  |
   +---------------------+   |             |                  |
   |  PSN Convergence    |-----------------------+----+----+  |
   +---------------------+   |             |     |    |    |  |
   |        PSN          |-+ |             v     v    v    v  v
   +---------------------+ | |  +--------------------------------+
   |    MAC/Data-link    | | |  |      Flags   |Frag| Len |Seq # |
   +---------------------+ | |  +--------------------------------+
   |       Physical      | | +->|          Inner Label           |
   +---------------------+ |    +--------------------------------+
                           +--->| Outer Label or MPLS-in-IP encap|
                                +--------------------------------+