RE: [PWE3] question regarding draft-kamapabhava-fr-pwe3-01.txt

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

Backward here means P-> PE direction. The B-bit in the header of FRoPW in the PE->P direction is derived from F-bit in the FRoPW in the P->PE direction of the same connection. 

-Shahram

> -----Original Message-----
> From: Akiva Sadovski [mailto:akiva@AXERRA.com]
> Sent: Sunday, June 02, 2002 9:28 AM
> To: pwe3@ietf.org
> Subject: [PWE3] question regarding draft-kamapabhava-fr-pwe3-01.txt
> 
> 
> Hi, pwe3,
> 
>   
> In draft-kamapabhava-fr-pwe3-01:
>   1. the FRoPW header (control word) contains F and B bits;
>   2. the F-bit (FECN) definition is " FECN is copied as 
> follows into the
> FRFoPW header: If it was set to one in the incoming frame 
> relay frame, it
> must be copied unchanged in the FRoPW header. Otherwise if it 
> was set to
> zero, it may be set to zero or one, depending on the 
> congestion state of the
> PE device in the forward direction" (6.2.1)
>   3. it is stated in B-bit definition that the processing is 
> as for F-bit,
> but ... it's applied in backward direction.
>   4. now the question: what direction in PW is considered to 
> be backward:
> PSN-bound? CE-bound?
> i'm sure this issue was extensively discussed on this mail 
> list, so how can
> i found any pointers ?
> 
> thanks,
>    Akiva
> 
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> 

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