Re: Custom Queuing byte count calculation

From: soon ccie (soonccie@yahoo.com)
Date: Fri Feb 21 2003 - 06:13:12 GMT-3


One logical thing I would do is to let default traffic ie. remain
traffic to take default byte count side 1500, then cal up from there.

--- CCIE FUN <ccieexam2002@yahoo.com> wrote:
> Emre
> Thanks for the reply. This is exactly what i was
> looking for.
> So as long as i follow the rationale of percentage.
> my Total byte count for all the queues can be
> anything.
>
> I guess can it be 20000
>
> then
> www gets 50% or 10000
> FTP/Telnet get 15 % or 3000
> Fast0/0 gets 15% or 3000
> Remaining traffic get 20 % 4000
>
> Am i doing it correctly ???
> thanks
>
>
> --- Emre Koyuncu <emrekoyuncu@hotmail.com> wrote:
> > Hi ,
> >
> > Actually by using these calculations , you can get
> > the solution for packet
> > count not the byte count. The correct solution must
> > be the following way :
> > www traffic gets 50% =>> the value can be 5000 (it
> > can be anything as long
> > as it is rational with the other values)
> > FTP /Telnet get 15% =>> the value can be 1500
> > Traffic from e0/0 gets 15% =>> the value can be
> > 1500.
> > I assume the rest ,20% is going to default queue.
> > =>> the value can be 2000
> > By this way after transmitting 5000 bytes of www
> > traffic, you will begin
> > transmitting FTP/Telnet traffic for 1500 bytes after
> > that you will transmit
> > traffic from e0/0 for 1500 bytes after that the rest
> > of the traffic will be
> > transmitted for 2000 bytes the cycle goes on. In one
> > cycle which is 10000
> > bytes , www traffic transmits 5000 bytes which is
> > 50% of the total traffic,
> > FTP/telnet transmits 1500 bytes which is 15% of
> > total traffic, e0/0
> > transmits 1500 bytes , the rest will transmit 2000
> > bytes.
> > This way is easy for calculation. And you use the
> > queue-list byte-count
> > command.
> > But by using cannonr's calculation you have to
> > queue-list limit command. And
> > this will be the calculation with the packet count.
> >
> > Emre Koyuncu CCIE #10916
> >
> > ----- Original Message -----
> > From: "cannonr" <cannonr@attbi.com>
> > To: "CCIE FUN" <ccieexam2002@yahoo.com>;
> > <ccielab@groupstudy.com>
> > Sent: Tuesday, February 18, 2003 9:00 PM
> > Subject: Re: Custom Queuing byte count calculation
> >
> >
> > > You question would usually include a packet size
> > for each protocol. Here
> > is
> > > an example if you have a packet size for each.
> > >
> > > DLSW gets 25% and has a 512KB packet size
> > > Telnet gets 25% and has a 1500 KB packet size
> > > Citrix gets 50% and has a 1500 KB packet size
> > >
> > > To figure out byte count use the following
> > formula.
> > >
> > > Divide the percentage for each protocol by packet
> > size.... You get the
> > > following.
> > >
> > > DLSW 25/512 = .048848
> > > Telnet 25/1500 = .01666
> > > Citrix 50/1500 = .03333
> > >
> > > Divide the output of each by the smallest number.
> > >
> > > DLSW .048848/.01666 = 2.93
> > > Telnet .01666/.01666 = 1
> > > Citrix .03333/.01666 = 2.0006
> > >
> > > Round this number and multiply by byte count.
> > >
> > >
> > > DLSW 3X512 = 1536
> > > Telnet 1X1500 = 1500
> > > Citrix 2X1500 = 3000
> > >
> > >
> > > Now to verify that you are close to the proper
> > percentages by adding all
> > > byte counts and dividing by each one.
> > >
> > > 1536+1500+3000=6036
> > >
> > > DLSW 1536/6036=.25473
> > > Telnet 1500/6036=.2485
> > > Citrix 3000/6036=.4970
> > >
> > > If you do not round up in the earlier step, you
> > this formula will come a
> > > little closer to the exact numbers, but using DLSW
> > as an example, if you
> > > were to multiply 2.93 X 512, you actually get
> > 1500.16 as a byte counte.
> > If
> > > you use 1500 as your number, you will still send 3
> > packets before your
> > turn
> > > is up which equals 1536..... That's as close as
> > you can get!
> > >
> > >
> > > HTH
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "CCIE FUN" <ccieexam2002@yahoo.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Tuesday, February 18, 2003 9:37 PM
> > > Subject: Custom Queuing byte count calculation
> > >
> > >
> > > > Hello Group
> > > > Can anybody explain the best way to calculate
> > the
> > > > byte-count. i am working on a example
> > > > "it says that configure custome queueing on
> > frame
> > > > cloud so if congestion occurs then:
> > > >
> > > > www traffic gets 50% traffic
> > > > FTP /Telnet get 15%
> > > > Traffic from e0/0 gets 15%
> > > > rest of the traffic shares the remaining
> > bandwidth.
> > > >
> > > > Now how do i determine the byte-count in this
> > case.
> > > > I have worked on examples which provide the
> > > > predetermined byte-counts, the DOC CD has a nice
> > > > example on that.
> > > > But have always stumbled upon the kind of
> > examples i
> > > > explained above.
> > > >
> > > > any help would be appreciated.
> > > >
> > > > thanks
> > > >
> > > >
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