Shiro ADSL 2/2+ Ethernet Modem - Manual (Page 63)

User Manual
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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
QoS Shaper Configuration
Note: Egress TCA is required if shaper is configured for that interface.
Field 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 hierarchical 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 uses a specific rate to
which data will be shaped. 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 Discipline This is similar to the above algorithm except that CoS1 is not rate limited. So in the example above
CoS1 data is not rate limited to 100Kbps but instead all 300Kbps is transmitted. The side effect is
that a misconfigured stream can potentially take all bandwidth.