Re: Frame-relay traffic shapping

Remember that Frame-relay traffic-shaping can be enabled in two ways:

The first method:

Enabling it directly under the main interface: You probably do not want to
do that as the first step in your configuration, because it will rate-limit
all DLCIs to 56000 b/s and it could adversely affect all traffic,
therefore, if you have more than one DLCI under a given interface, I
recommend configuring a "Map-class" for each DLCI and applying the
map-class to each DLCI in the DLCI configuration mode, and then enabling
the Frame-relay traffic-shaping as the last step of the configuration.

R1(config)#Int S0/0

R1(config-if)#Encap frame-relay

R1(config-if)#Frame-relay traffic-shaping

*You can see that it is NOT a good thing to do as the first step of your
configuration:*

* *

R1#Show traffic-shape

Interface Se0/0

       Access Target Byte Sustain Excess Interval Increment Adapt

VC List Rate Limit bits/int bits/int (ms) (bytes)
Active

164 *56000* 875 7000 0 125 875
-

112 *56000* 875 7000 0 125 875
-

106 *56000* 875 7000 0 125 875
-

105 *56000* 875 7000 0 125 875
-

104 *56000* 875 7000 0 125 875
-

103 *56000* 875 7000 0 125 875
-

102 *56000* 875 7000 0 125 875
-

The second method:

R1(config)#*Policy-map tst*

R1(config-pmap)#*class class-default*

R1(config-pmap-c)#*Shape adaptive 32000*

*NOTE: You should see the following console message:*

*Traffic Shaping must be enabled on this class before the command can be
issued*

In this method you MUST use the *Shape average* or *Shape peak*; when
you configure either one of these commands, it actually does two things:

   1. With Shape average, you send BCs worth of data
   every Tc, and with Shape Peak, you send Bc + Be every Tc.
   2. It also enables Frame-relay traffic-shaping.

So in the first approach, you have to statically configure the Frame-relay
traffic-shaping, and in the second method, when you use the Shape
average or the Shape peak, it will enable it for you automatically.

R1(config)#*Policy-map tst*

R1(config-pmap)#*class class-default*

R1(config-pmap-c)#*Shape average 64000 8000 0*

R1(config-pmap-c)#*Shape adaptive 32000*

NOTE: You no longer get any console messages.

I am strictly going based on what I see in the IOS. I am running "
flash:3725-adventerprisek9-mz.124-15.T13.bin", now later IOSes might show
you a different console message.

I hope this helped.

On Fri, Dec 28, 2012 at 6:43 AM, Tauseef Khan
<tasneemjan_at_googlemail.com>wrote:

> Bit of confusion on Frame relay traffic shaping. appreciate if some one
> could calrify as its not clear on CCO docs
> Is it mandatory to use <frame-relay traffic shaping> on a frame-relay pvc
> or svc if I need to enable frame-relay traffic shapping with frame-relay
> class:
>
> I have the following config on a pvc:
>
> map-class frame-relay FRTS
> frame-relay cir 384000
> frame-relay bc 48000
> frame-relay be 96000
> frame-relay mincir 192000
> frame-relay adaptive-shaping becn
>
> int s0/0/0
> encap frame-relay
> frame-relay class FRTS
> frame-relay traffic-shaping ! <=============== wll the FRTS work without
> this command
>
> If have to enable service policy on the same interface (S0/0/0), is there
> a way of doing that as i can't also apply the service-policy if frame-relay
> traffic shaping is enabled on the interface
> thanks in advance
> &
> Kind regards
>
>
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--
*Narbik Kocharians
*CCSI#30832, CCIE# 12410 (R&S, SP, Security)
*www.MicronicsTraining.com* <http://www.micronicstraining.com/>
Sr. Technical Instructor
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