From: Jack Yu (cciecn@xxxxxxxxx)
Date: Fri Feb 09 2001 - 20:07:49 GMT-3
Just want to expand this thread a little bit,
could somebody tell me how I could choose between GTS
and CAR? What's the internal difference? Also the
difference between GTS and Frame Relay Traffic
shaping?
I read some docs from CCO, but there is no clear
answers, at least I did not find one that I can
understand.
Thanks
Jack
--- Simon Baxter <Simon.Baxter@au.logical.com> wrote:
> Thanks David. That's a simple definition I've been
> looking for for ages!!!!
>
>
> cheers!!
>
>
> Simon
>
> -----Original Message-----
> From: David Fahed [mailto:dfahed@outremer.com]
> Sent: Wednesday, February 07, 2001 12:59 AM
> To: Trojanowski A. Mark
> Cc: Robert DeVito; ccie2001uk@yahoo.com;
> ccielab@groupstudy.com
> Subject: Re: GTS
>
>
> Comments :
>
> Traffic-shape rate <CIR in bps> <Bc in bits> <Be in
> Bits>
>
> CIR The average That you want to send out (Here
> 2000000 bit/s)
> Bc The amount of data per each Tc interval (Good
> value is 1/8 CIR) this
> value is in bits
> Be The amount of excess data allowed to be sent in
> the first interval (only
> in the first interval).
>
> How could i calculate Tc? Tc=Bc/Cir
> So Tc = 1/8 s. So 8 interval in 1seconde.
>
> So to calculate if we have really the Limitation of
> 2000000 bit/s:
> Interval 1: Bc + Be = 250000 + 250000 (You add only
> Be in the first
> interval)
> Interval 2: Bc = 250000 (you are Limited to transmit
> Bc bit each interval
> Tc)
> .
> .
> Interval 8: Bc=250000
>
> Total : 2250000 bit authorized in 1 second.
>
> If you want to really limit the amount at 20000000
> just put the Be to 0.
>
> Maybe it is not clear because of my bad english but
> hope this help.
>
> Yours David
> "Trojanowski A. Mark" a écrit :
>
> > Yes, I think with
> > access-list 101 permit tcp any any eq ftp
> > > interface Tokenring 0
> > > traffic-shape group 101 2000000 250000 250000
> >
> > you will limit ftp outbound to 2 meg.
> >
> > comments ??
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com]On Behalf Of
> > David Fahed
> > Sent: Tuesday, February 06, 2001 9:05 AM
> > To: Robert DeVito
> > Cc: ccie2001uk@yahoo.com; mtrojano@cisco.com;
> ccielab@groupstudy.com
> > Subject: Re: GTS
> >
> > Robert DeVito a écrit :
> >
> > > But will that answer his scenerio question?
> Will that limit the FTP
> > traffic
> > > to 2.5Mbps?
> > >
> > > ----Original Message Follows----
> > > From: ccieuk <ccie2001uk@yahoo.com>
> > > Reply-To: ccieuk <ccie2001uk@yahoo.com>
> > > To: "Trojanowski A. Mark" <mtrojano@cisco.com>,
> ccielab@groupstudy.com
> > > Subject: RE: GTS
> > > Date: Tue, 6 Feb 2001 12:27:53 -0800 (PST)
> > >
> > > Mark,
> > >
> > > Going to try the following on my home router,
> but not
> > > to sure how to check if its working
> > > Thanks for the info
> > >
> > > access-list 101 permit tcp any any eq ftp
> > > interface Tokenring 0
> > > traffic-shape group 101 2000000 250000 250000
> > >
> > > --- "Trojanowski A. Mark" <mtrojano@cisco.com>
> wrote:
> > > > I believe the first number 1000000 is in bits
> and
> > > > the last two numbers
> > > > 125000 125000 are in bytes.
> > > >
> > > > 125000 *8 = 1000000
> > > >
> > > > traffic-shape group 101 1000000 125000 125000
> will
> > > > give you 1000000 bit-rate
> > > > 1000000 bit-burst-size 1000000
> > > > bit-excess-burst-size.
> > > >
> > > > -Mark
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com
> > > > [mailto:nobody@groupstudy.com]On Behalf Of
> > > > ccieuk
> > > > Sent: Tuesday, February 06, 2001 2:27 PM
> > > > To: ccielab@groupstudy.com
> > > > Subject: GTS
> > > >
> > > >
> > > > I'm trying to set GTS on a token ring
> interface to
> > > > restrict FTP to only 2 Mbps
> > > > I found an example on the CD, but don't
> really
> > > > understand the explanation. See below
> > > >
> > > > Enable GTS on the Interface Example
> > > > This example shows the configuration of two
> > > > traffic-shaped interfaces on a router.
> Ethernet 0 is
> > > > configured to limit User Datagram Protocol
> (UDP)
> > > > traffic to 1 Mbps. Ethernet 1 is configured
> to limit
> > > > all output to 5 Mbps.
> > > >
> > > > access-list 101 permit udp any any
> > > > interface Ethernet0
> > > > traffic-shape group 101 1000000 125000
> 125000
> > > > !
> > > > interface Ethernet1
> > > > traffic-shape rate 5000000 625000 625000
> > > >
> > > >
> > > > I don't understand where the 125000 figure
> comes
> > > > from?
> > > >
> > > > Any help would be appreciated
> > > > Thanks
> > > >
> > > >
> > > >
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