From: Chris Lewis (chrlewiscsco@yahoo.com)
Date: Mon Oct 10 2005 - 12:23:09 GMT-3
No.
I think just giving you an answer here will not help. I would recommend some more study, but more importantly spending some time on a pair of routers, using the extended ping command with 0 timeout and large packets, to test out what happens. Then if you would like further comment from me, answering the questions I posed below.
I'm trying to help, honest.
Chris
dusth@comcast.net wrote:
Chris, basically I do not need police nested in the map-class, right? For frame relay traffic shapping any thing that is above (be) will be mark as de when it sends out, isn't it?
So just map-class as follow is good enought for the requirement?
map-clas frame-relay frts
frame-relay traffic-shaping becn
frame-relay cir 96000
frame-relay bc 12000
frame-relay be 244000
Dustin
map-clas frame-relay frts
frame-relay traffic-shaping becn
frame-relay cir 96000
frame-relay bc 12000
frame-relay be 244000
-------------- Original message --------------
> What are your answers to these questions?
>
> 1. Policiing does not queue packets, shaping does, if you have a policer and a
> shaper configured for the same rate, will the shaper be able to queue packets?
>
> 2. Can you set actions based off rate for shaping? We know we can use the
> presence or lack of BECNs to control the transmission rate between CIR and
> mincir, but can you make arbitrary settings based on rate using shaping
> commands?
>
> 3. If you look at policing, can you set conditions for two rates using a single
> token bucket? Can you use Bc or Be values to guarantee that a given action will
> occur at a rate above the target policed rate for a single bucket system,
> regardless of how traffic is presented to the policer? In other words, with a
> single bucket system, can you constantly transmit at a rate above the policed
> rate if you set Bc and Be to any value?
>
> 4. How does this change with a two rate (meaning two token bucket) system?
>
> start off with two routers connected, say you look at policing first, configure
> each of the following in a policy-map for class default, apply it outbound, then
> ping from this router with 0 timeout, 99999 repeat count and 0 interval.
>
> Predict what will happen, and see if the results match your understanding by
> looking at the show interface command with load-interval set to 30.
>
> police 64000 12000 conform-action transmit exceed-action set-prec-transmit 1
> police 64000 12000 24000 conform-action transmit exceed-action
> set-prec-transmit 1 violate-action drop
>
> Then try a two bucket system using the police cir xxx pir yyyy syntax and see
> what you can come up with.
>
> Chris
>
> dusth@comcast.net wrote:
> Hi all,
> I'm trying to configure a frame-relay traffic shapping with DE bit set and not
> sure if my syntax is correct. Here is the requirement maximum through put is
> 256kbps, if traffic excess of 96kps set them as de, tc is 125.
> Should solution be "set-fr-de" with class-based shaping or "set-frde-transmit"
> with class-based policing?
>
> policy-map frts
> class class-default
> police 96000 12000 244000 conform-action transmit exceed-action
> set-frde-transmit violate-action drop
>
> map-clas frame-relay frts
> frame-relay traffic-shaping becn
> frame-relay cir 96000
> frame-relay bc 12000
> frame-relay be 244000
> service-policy output frts
>
> Please advice.
>
> Dustin
>
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