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

[Akiva Sadovski <akiva@AXERRA.com>]

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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