Traffic Shaping

Unanswered Question
Sep 5th, 2008
User Badges:
  • Gold, 750 points or more

Under sh traffic-shape fastEthernet 0/0, the output is Target rate = 640000 (bps), Sustains bits/int = 40000 (bits), Internal 62ms and increment 5000 (bytes).

From my understand the total bandwidth allowed on the physical interface is 640Kbps. The sustains bits is the Burst committed which means what the router is only allowing the maximum traffic to be sent through the interface is 40000 bits every 62ms (Time committed). Can someone advise pls. I sometime confuse myself with the traffic shaping equation.


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
Marwan ALshawi Fri, 09/05/2008 - 05:01
User Badges:
  • Purple, 4500 points or more
  • Community Spotlight Award,

    Best Publication, December 2015

try this show command will give u better details

show policy-map interface

for example

R3#show policy-map

Policy Map shape-all

Class class-default

Traffic Shaping

Average Rate Traffic Shaping

CIR 64000 (bps) Max. Buffers Limit 1000 (Packets)

R3#show policy-map interface s0/0.1


Service-policy output: shape-all

Class-map: class-default (match-any)

7718 packets, 837830 bytes

30 second offered rate 69000 bps, drop rate 5000 bps

Match: any

Traffic Shaping

Target/Average Byte Sustain Excess Interval Increment

Rate Limit bits/int bits/int (ms) (bytes)

64000/64000 2000 8000 8000 125 1000

Adapt Queue Packets Bytes Packets Bytes Shaping

Active Depth Delayed Delayed Active

- 56 6393 692696 6335 684964 yes

if helpful Rate


This Discussion