shaping target rate

From: Shafeen Ibrahim (shafeen.i@gmail.com)
Date: Tue Aug 08 2006 - 07:42:42 ART


**
hi ,
     In class based traffic shaping when we shape at the peak rate using the
shape peak command , there is differing Target Rate and Average Rate in the
policy-map output.

I would like to know the know the significance of the differing Target Rate
and Average Rate values. As i understand the shape peak command enables
transmission up to the maximum rate each Tc interval , which would be the
Target rate but then what about Average Rate?.

The other problem is when we apply class based adaptive shaping to a
frame-relay interface shouldn't the policy-map output show adaptive shaping
active?.

The following is the partial configuration .

interface Serial0/0
encapsulation frame-relay
service-policy output SHAPE

policy-map SHAPE
 class class-default
  shape peak 1024000 32768 16384
  shape adaptive 384000
!

The following is the policy-map output

Class-map: class-default (match-any)
      514 packets, 63610 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
      Traffic Shaping
           *Target/Average* Byte Sustain Excess Interval Increment
             *Rate* Limit bits/int bits/int (ms) (bytes)
          1536000/1024000 6144 32768 16384 32 6144

        *Adapt* Queue Packets Bytes Packets Bytes Shaping
        *Active* Depth Delayed Delayed Active
        - 0 244 60100 0 0 no

Thanks & Regards

Shafeen Ibrahim



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