SOHOSpeed ADSL2/2+ Ethernet/Wireless Gateway User’s Manual
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3.7.19 Shaper
The Shaper Configuration page is accessed by selecting Shaper on the Advanced main page.
Three shaper algorithms are supported:
z
HTB
z
Low Latency Queue Discipline
z
PRIOWRR
Note:
Egress TCA is required if shaper is configured for that interface.
Field Description
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
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.
PRIOWRR
This is a priority based weighted round robin algorithm operating on CoS2-CoS6.
CoS1 queues have the highest priority and are not controlled by the WRR
algorithm.
