User guide

ADSL2+ Ethernet USB Combo Router - User Guide
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4.5.20 QoS Shaper Configuration
The Shaper Configuration page is accessed by selecting Shaper on the Advanced main page.
Three shaper algorithms are supported:
• HTB
• Low Latency Queue Discipline
• PRIOWRR
Note—Egress TCA is required if shaper is configured for that interface.
Figure 1-35 : QoS Shaper Configuration
Field Definition/ Description
Interface The selections are WAN/LAN interfaces except WLAN, which does
not support Shaper feature. This field needs to be selected before
shaper configuration.
Max Rate This field is applicable for the HTB Queue Discipline and Low
Latency Queue Discipline, both are rate-based shaping algorithms.
HTB Queue Discipline The hierachical token bucket queue discipline is a rate-based
shaping algorithm. This algorithm rate shapes the traffic of a class
over a specific interface. All CoSx traffic is assigned a specific rate
to which data will be shaped to. For example: If CoS1 is configured
to 100Kbps then even if 300Kbps of CoS1 data is being transmitted
to the interface only 100Kbps will be sent out.
Low Latency Queue
This is similar to the above algorithm except that CoS1 is not rate