From: Michael E. Flannagan (mflannag@xxxxxxxxx)
Date: Fri Feb 09 2001 - 20:50:19 GMT-3
GTS/FRTS = Shaping
CAR = Marking/Policing
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C i s c o S y s t e m s Michael E. Flannagan
| | Network Consulting Engineer
||| ||| Research Triangle Park, NC
||||||| ||||||| (919) 392-4550
.:|||||||||||:.:|||||||||||:. mflannag@cisco.com
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On Fri, 9 Feb 2001, David Fahed wrote:
> No difference between GTS and FRTS (Like GTS on Frame relay)
> GTS is used to manage traffic and congestion on the network
> CAR do the same thing but you can manage what to do with the excess traffic
> (drop ....) no with GTS
>
> Maybe it isn't complete but I use it like this!
>
>
> Le sam, 10 fév 2001, Jack Yu a écrit :
> > 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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