Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010, Configuration Manual

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Example: QoS Parameter Configuration for QoS Cell Mode and Byte Adjustment
for Cell Shaping
The example in this section illustrates how to configure the byte adjustment
application to adjust the shaping rate for downstream ATM traffic from the customer
premise equipment (CPE) to Ethernet interfaces configured on an E320 router.
In this example, the QoS administrator manages the shaping rate using a combination
of the byte adjustment application and cell shaping mode to account for different
layer 2 encapsulations and the ATM cell pad, header, and trailer.
Figure 64 on page 286 displays the Ethernet network to which the QoS administrator
applies the byte adjustment.
Figure 64: Byte Adjustment for VC1 and VC2
In Figure 64 on page 286, VLAN 1 and VLAN 2 map to the subscribers at VC1 and
VC2.
The QoS administrator allocates a total of 10 Mbps of bandwidth for voice, video,
and data services to VC1, and 2 Mbps of bandwidth of data traffic for VC2.
Table 28 on page 286 lists the shaping rate and byte adjustment for both subscribers.
Table 28: Byte Adjustment for Subscribers VC1 and VC2
VC2 VC1
A1 encapsulation A3 encapsulation
Protocol
-2 -28
Byte Adjustment
1000000 bps 1000000 bps
Voice Bandwidth
– 10000 bps
Video Bandwidth
– 8000000 bps
Data Bandwidth
1000000 bps –
Total Bandwidth
286 ■
Example: QoS Parameter Configuration for QoS Cell Mode and Byte Adjustment for Cell Shaping
JUNOSe 11.1.x Quality of Service Configuration Guide