From: Darby Weaver (ccie.weaver@gmail.com)
Date: Sun Dec 14 2008 - 21:08:42 ARST
Bit Gossip - long time no talk...
You are doing good by using Practical Studies II....
However for this little bit o arcane math...
You need Doyle Volume II as I recall. And take a moment to enjoy the
scenery Doyle even covers the how and why of the sequence numbers and how
the queueing algorithm actually does its job. Why Packet A of a given
size gets queued say in relation to Packet B... And yes size of the packet
does matter.
It matters so much that Doyle recommends something of a traffic analysis in
some cases prior to applying these values - depending on what the network is
actually doing in terms of processing packets.
On Sun, Dec 14, 2008 at 1:22 PM, Bit Gossip <bit.gossip@chello.nl> wrote:
> 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
>
>
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>
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