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RE: [RPRWG] Transmission of fairness frames


Fredrik,

Fairness frames do not go through the stage queue. Like idle frames, they are pulled in directly on transmit select (Table 6.34 for single-queue or Table 6.35 for dual-queue). This is also shown in Figure 6.3, Figure 6.14, and Figure 6.15, although it is not as obvious as it could be.

You aren't the only one to miss this. Look at Comment 167. Hopefully my implementation of the resolution to Comment 167 will clarify this so we don't continue to confuse people about this.

John Lemon

-----Original Message-----
From: Fredrik Davik [mailto:bjornfd@xxxxxxxxx]
Sent: Wednesday, October 01, 2003 2:19 AM
To: stds-802-17@xxxxxxxx
Subject: [RPRWG] Transmission of fairness frames



I am testing D2.5 in my simulator, and are getting into problems when
transmitting fairness frames.

The function TransmitFrame() on page 261 which transmits fairness
frames is unspecified.

I assume transmission of fairness frames goes via the stage queue
(from Q_TX_SS to Q_TX_STAGE). The stage queue selection state machine
does not have any rows handling frames of type FT_FAIRNESS, thus
fairness frames can't get from the stage queue and onto the ringlet,

I looked through the comment database and didn't find any comments on
this issue...

Im I missing something here or is there a flaw in D2.5?

Best Regards, 
Fredrik 
---------------------------------------------
Fredrik Davik
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