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RE:(2) [802.3ae] WIS Test Pattern Error Counts


Just to be absolutely sure:

Does that mean that the sentence in 50.3.8 
(requiring a test pattern checker
to synchronize and report bit errors) 
will be removed from the spec?


> -----Original Message-----
> From: Tom Alexander [mailto:Tom_Alexander@xxxxxxxxxxxxxx]
> Sent: Monday, September 17, 2001 11:42 AM
> To: Nepple, Bruce; stds-802-3-hssg@xxxxxxxx
> Subject: RE: [802.3ae] WIS Test Pattern Error Counts
> Bruce,
> Your interpretation of D3.2 is correct. As per the resolution to
> Comment #53 against D3.1, the existing bit error mechanisms are to
> be used to detect and report pattern bit errors, as specifically
> stated in the comment resolution:
> 	"...The method of measuring bit errors shall be to use the
> 	current B1, B2 and B3 SONET parity checking mechanisms in
> 	the WIS Receive process. No additional logic shall be added
> 	to the error checker for counting errors."
> There is no Path Bit Error mechanism or counter in the normal WIS
> processing, and therefore there is no Path Bit Error counter for
> test pattern mode, either in Clause 50 or Clause 45.
> There was an extensive discussion on this subject during the
> comment resolution meeting. The general consensus was that the
> existing B1/B2/B3 parity checks provided sufficient capability
> for detecting test pattern bit errors, and also for providing
> a rough assessment of the bit error rate. The view was that there
> was no good reason to increase the WIS complexity by providing
> additional hardware to measure the bit error rate more precisely.
> I hope this answers your question.
> Best regards,
> - Tom Alexander
> WIS Scribe
> -----Original Message-----
> From: Nepple, Bruce [mailto:bnepple@xxxxxxxxxxxxxxxxxxx]
> Sent: Friday, September 14, 2001 7:26 PM
> To: stds-802-3-hssg@xxxxxxxx
> Subject: [802.3ae] WIS Test Pattern Error Counts
> In 50.3.8 of D3.2 it is indicated that the WIS test pattern checker 
> shall have the ability to synchronize to the mixed frequency 
> test pattern and report bit errors detected within the payload 
> to the Station Management entity.  It then goes on to describe 
> the Section BIP, Line BIP, and Path Block error counters, but 
> makes no mention of a Path Bit Error Counter.  Did I miss 
> something?  The three counters mentioned above will function 
> without a bit checker through the standard parity bytes.
> I didn't see such a counter in 45.2.2 either.
> Thanks
> Bruce