From: Darby Weaver (ccie.weaver@gmail.com)
Date: Mon Dec 15 2008 - 14:20:33 ARST
Yes and Doyle TCP/IP Vol II does go into detail on this.
On Mon, Dec 15, 2008 at 7:56 AM, Petr Lapukhov
<petr@internetworkexpert.com>wrote:
> Hi,
> Most likely, the book refers to the "round number" which is the size of
> the
> last packet sent by the scheduler. This value is used to initialize every
> new flow queue byte counter. You can read a detailed description of WFQ
> algorithm (explaning how this round number is used btw) here:
>
>
> http://www.internetworkexpert.com/downloads/IEWB-RS-VOL-I-V5.Section.10.QoS.teaser.pdf
>
> The second task in dedicated to WFQ. Understanding the internal working of
> WFQ is very important since the same scheduling procedure is used by CBWFQ.
>
> HTH,
>
> --
> Petr Lapukhov, CCIE #16379 (R&S/Security/SP/Voice)
> petr@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com <http://www.internetworkexpert.com/>
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
>
> 2008/12/14 Bit Gossip <bit.gossip@chello.nl>
>
> > Experts,
> > any idea on how these value are calculated for the WFQ min-max
> > algorithm?
> > In "CCIE Practical Studies Volume II" chapter "Chapter 6. QoS b Rate
> > Limiting and Queuing Traffic" there is an example where 60 and 700 are
> > used. But how are these value determined?
> > "During the WFQ process, packet size is noted when new packets arrive.
> > If the IP flow that they belong to is new, a rounded packet size is also
> > used."
> > Tnx,
> > bit
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Thu Jan 01 2009 - 12:53:08 ARST