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12.8 Configuration Example 7 – Interface Shaping
In this configuration example, we wish to add port shaping to port 8 and set the shaped rate to 40 Mbps .
Also, we wish to use the maximum bucket size (burst duration) available of 512M.
To add port shaping to port 8, please enter the following commands:
12.8.1.1 Enable Shaping on Port 8
As mentioned in section 5.3, if you do not specify maximum burst duration, the maximum bucket size will
automatically be configured. For a 10/ 100 Mbps or 1 GigE port, the value will be 524,288 bytes. Hence, it
does not matter what value you enter as the max-burst-rate as long as it is greater than the shaped-rate.
ERS5500 Step 1 – Configure port 8 with a committed shape rate of 40 Mbps and a burst rate of 50
Mbps
ERS5500-24T(config)# interface fastEthernet all
ERS5500-24T(config-if)# qos if-shaper port 8 shape-rate 40000 max-burst-rate 50000
ERS5500-24T(config-if)# exit
12.8.2 Verify Operations
12.8.2.1 Verify Shape Rate Configuration
Step 1 –View the shape rate configured on port 8
show qos if-shaper port 8
ERS5500-24T#
Result:
Unit Port IfIndex
____ ____ _______ ________________ ________ ________
1
8
8
Filters and QOS Configuration for Ethernet Routing Switch 5500
January 2013
13
0
11
0
8
0
5
0
3
0
Figure 9: Port Shaping Example
Name
Rate
Burst
Size
(Kbps)
(Bytes)
40000
524288
Technical Configuration Guide
Relative
2
43008
Relative
2
39936
Relative
2
36864
Relative
2
33792
Relative
2
30720
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