From: wim.depauw@getronics.com
Date: Tue Jan 22 2008 - 18:03:57 ARST
Hi,
In Question 7.1 of IE workbook ( lab 9) they ask to configure an average rate of 5Mbps and a peak rate of 7.5Mbps . In the solution they work with the command shape average command + be and bc bits .
First I used the shape average and this worked fine .Then I started looking for an alternative:
I used the shape peak command ,
I started with shape peak 7500000 but then my target came to 9375000 and my average rate to 7500000 .
so I used my average rate in the policy map :
shape peak 5000000 160000 80000
It seems that my speed value in the shape peak command needs to be the average speed and not the peak rate.( see output below ) => Does anybody know why ? Although it stands differently in the command reference...
What is the difference between target rate and average rate ?
Rack1R4(config-pmap-c)#do sho policy-map int s1/0
Serial1/0
Service-policy output: lab9
Class-map: class-default (match-any)
122 packets, 2308 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)
7500000/5000000 30000 160000 80000 32 30000
Adapt Queue Packets Bytes Packets Bytes Shaping
Active Depth Delayed Delayed Active
- 0 0 0 0 0 no
Rack1R4(config-pmap-c)#
Configuration
policy-map lab9
class class-default
shape peak 5000000 160000 80000
gr
wim
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