TE REQ - Dynamic Adjustment of Scheduler Parameters

[Nabil Seddigh <nseddigh@tropicnetworks.com>]

I just read v03 of the DS-TE requirements draft and had a
comment regarding section 3.6. This section talks about dynamically
adjusting scheduler parameters based on signaled traffic parameters.

The concern relates to the case where class-types (CT) are used to
aggregate multiple classes or OAs. In this case, the signalled 
traffic parameters for a single CT may cover traffic that is treated 
by 2 different PSCs: AF1x and AF2x. This raises the question 
of how to adjust the separate queue parameters for AF1x and AF2x. 

The only way that I can think of tackling this problem is through 
some pre-set ratio. Thus, the LSR would assume that y% of traffic 
for CT1 is AF1x and (1-y)% is AF2x! If three classes are combined
into 1 CT then 2 different parameters y1 and y2 are required.
In this case, it is desirable that "y" be a user configurable 
parameter and not hard-coded.

I suggest that this section needs some kind of discussion 
on the above and the addition of the user-configurable parameter.

Thoughts?

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Best
Nabil Seddigh
nseddigh@tropicnetworks.com