PointRed Telecom Ltd. MCRD-2458 Manuale Utente
M i c r o R e d & M i c r o V i e w N M S U s e r M a n u a l v 1 . 0
Page 80
9. Quality of Service
Quality of service (also know as Traffic Shaping) refers to the general concept of prioritizing
network traffic, according to some of its properties. By default, each packet is treated
equally and in a first-come, first-served basis. However, by utilizing QoS, certain traffic
patterns, can be given higher priority or can be guaranteed specific network resources.
From now on, we will refer to a traffic pattern as class.
network traffic, according to some of its properties. By default, each packet is treated
equally and in a first-come, first-served basis. However, by utilizing QoS, certain traffic
patterns, can be given higher priority or can be guaranteed specific network resources.
From now on, we will refer to a traffic pattern as class.
Some of the policies that can be enforced with QoS are:
x
Restrict or eliminate the bandwidth consumed by P2P applications.
x
Distribute the available bandwidth equally among a group of HOTSPOT users.
x
Make sure that certain services (e.g. the web portal of a hotspot) will always be
accessible, no matter how overloaded the network is.
accessible, no matter how overloaded the network is.
x
Reserve a portion of the available bandwidth for latency sensitive applications, like
VoIP.
VoIP.
x
Mitigate DOS attacks by restricting the network usage available for specific kinds of
traffic (e.g. ICMP traffic).
traffic (e.g. ICMP traffic).
9.1.
The QoS window tab
Let’s have a look first, at the overall GUI interface (Picture 77).
Figure 77. The QoS window
There are three main columns: