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NET MODULE NB1601 Router User Manual

NB1601  
User Manual for NRSW version 4.4  
5.4.5. Quality Of Service  
NetModule routers are able to prioritize and shape certain kinds of IP traffic. This is currently limited  
on egress, which means that only outgoing traffic can be stipulated.  
The current QoS solution is using Stochastic Fairness Queueing (SFQ) classes in combination with  
Hierarchy Token Bucket (HTB) qdiscs. Its principle of operation can be summarized as ceiling the  
max. throughput per link and shaping traffic by reflecting the specified queue priorities. In general, the  
lowest priority number of a queue gets most out of the available bandwidth.  
In case of demands for other class or qdisc algorithms please contact our support team in order to  
evaluate the best approach for your application.  
QoS Administration  
The administration page can be used to enable and disable QoS.  
QoS Classification  
The classification section can be used to define the WAN interfaces on which QoS should be active.  
Parameter  
QoS Interface Parameters  
Interface  
The WAN interface on which QoS should be active  
Bandwidth congestion  
The bandwidth congestion method. In case of auto the system will  
try to apply limits in a best-effort way. However, it is suggested to  
set fixed bandwidth limits as they also offer a way of tuning the QoS  
behaviour.  
Downstream bandwidth  
Upstream bandwidth  
IP to ping (primary)  
The available bandwidth for incoming traffic  
The available bandwidth for outgoing traffic  
An IP, which answers ICMP echo requests to determine the bandwidth  
of the link  
IP to ping (secondary)  
An IP, which answers ICMP echo requests to determine the bandwidth  
of the link  
When defining limits, you should consider bandwidth limits which are at least possible as most shaping  
and queues algorithms will not work correctly if the specified limits cannot be achieved. In particular,  
any WWAN interfaces operating in a mobile environment are suffering variable bandwidths, thus rather  
lower values should be used.  
90  
GeneralDetails
NameNET MODULE NB1601 Router User Manual
MakeNET MODULE
LanguageEnglish
FiletypePDF (Download)
File size3.35 MB
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NET MODULE NB1601 Router User Manual