Re: TE REQ - Dynamic Adjustment of Scheduler Parameters

[Nabil Seddigh <nseddigh@tropicnetworks.com>]

The ratio will vary depending on the network, the device and
the traffic mix. Hard-coding an "assumption" does not appear a 
wise approach. Moreover, if more than one class are aggregated, 
multiple ratios will be required.

If a ratio is to be used it seems to me that it is better 
that it be configurable. 

Best,
Nabil

> 
> Yes, when one can reasonably assume a ratio, then one could put both into
> one E-LSP!
> 
> see thread index of http://psg.com/lists/te-wg/te-wg.2001/msg00279.html
> for some discussion on this.
> 
> Jim
> 
> On Fri, 22 Feb 2002, Nabil Seddigh wrote:
> 
> >
> > 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?
> >
> > ---
> > Best
> > Nabil Seddigh
> > nseddigh@tropicnetworks.com
> >