From: Tim Fletcher (tim@fletchmail.net)
Date: Fri Feb 14 2003 - 16:30:16 GMT-3
Don't forget to turn traffic shaping on under the interface config.
interface Serial5/1/1
frame-relay traffic-shaping
-Tim Fletcher
At 09:00 AM 2/14/2003 -0800, Ryan B wrote:
>Few things of note...
>
>1) I would remove the "class-map ipTraff" and in the policy-map use "class
>class-default"
>2) "bandwidth 50" is saying to use 50kb/sec of bandwidth - have you tested
>this configuration? Does it work? It should error out when you try to
>apply the config since you are exceeding the mincir value
>3) In the FRTS config you have no CIR defined and it defaults to 56k...
>Also, the bc is not the burst size, it is the the amount of data to send per
>Tc interval... This value is dependent on the type of data and the CIR of a
>PVC... For your 9.6k PVC the value would be "Bc = CIR/8" (note that for
>VoIP you would set it to "Bc = CIR/100" to reduce delay)
>4) I generally set the burst (Be) to 25% of the CIR for non VoIP carrying
>circuits, assuming of course that the access rate of the line is not equal
>to the CIR. For voice, Be should be 0 (and it defaults as such)... Keep in
>mind that the Bc is not the rate in kbps as you have configured. It is the
>amount of excess data in bits to send during the first Tc interval where
>congestion occurs. I guess you could calculate the Bc to an specific kbps
>value by using the Tc ("Tc = Bc/CIR") to figure out what value for Be would
>give you the desired 19.2kbps...
>
>So I'd try something like this (though there could be errors in here, I'm
>just spitting this out based on your config and my weak memory). Also, this
>would not have you bursting to 19.2... Can't give you all the answers now
>can I ;))
>
> interface Serial5/1/1
> service-policy output DLSW&IP
> frame-relay class qos
>
> class-map dlswTraff
> match access-group 150
>
>policy-map DLSW&IP
> class dlswTraff
> bandwidth percent 50
> class class-default
> bandwidth percent 50
>
> map-class frame-relay qos
> frame-relay cir 9600
> frame-relay mincir 9600
> frame-relay bc 1200
> frame-relay be 2400
> no frame-relay adaptive-shaping
>
>access-list 150 permit tcp any eq 2065 any
>
>There is an page on the Cisco site that covers this very well, something
>titled "Configuring Frame Realy Traffic Shapping", but I don't have the URL
>handy.
>
>----- Original Message -----
>From: "Sage Vadi" <sagevadi@yahoo.co.uk>
>To: <ccielab@groupstudy.com>
>Sent: Friday, February 14, 2003 6:16 AM
>Subject: QoS: FRTS & CBWFQ
>
>
> > All,
> >
> > Q) On R1 configure the QoS default for the frame-relay
> > network to have a comitted information rate of 9600bps
> > and a burst size of 19200bps. Configure DLSW traffic
> > with 50% of the traffic followed by IP with 50%, apply
> > this to the map class in the step above.
> >
> > My Config:
> >
> > interface Serial5/1/1
> > service-policy output DLSW&IP
> > frame-relay class qos
> >
> > class-map dlswTraff
> > match access-group 150
> > class-map ipTraff
> > match access-group 1
> >
> > policy-map DLSW&IP
> > class dlswTraff
> > bandwidth 50
> > class ipTraff
> > bandwidth 50
> >
> > map-class frame-relay qos
> > frame-relay bc 19200
> > frame-relay mincir 9600
> > no frame-relay adaptive-shaping
> >
> > access-list 1 permit any
> > access-list 150 permit tcp any eq 2065 any
> >
> > Q) Does this seem to be correct config?
> >
> >
> >
> >
> >
> >
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