Blade ICE RACKSWITCH G8124-E Manuale Utente

Pagina di 388
BMD00220, October 2010
133
C
HAPTER
9
Quality of Service
Quality of Service features allow you to allocate network resources to mission-critical applications 
at the expense of applications that are less sensitive to such factors as time delays or network 
congestion. You can configure your network to prioritize specific types of traffic, ensuring that each 
type receives the appropriate Quality of Service (QoS) level. 
The following topics are discussed in this section: 





QoS Overview 
QoS helps you allocate guaranteed bandwidth to the critical applications, and limit bandwidth for 
less critical applications. Applications such as video and voice must have a certain amount of 
bandwidth to work correctly; using QoS, you can provide that bandwidth when necessary. Also, you 
can put a high priority on applications that are sensitive to timing out or that cannot tolerate delay, 
by assigning their traffic to a high-priority queue. 
By assigning QoS levels to traffic flows on your network, you can ensure that network resources are 
allocated where they are needed most. QoS features allow you to prioritize network traffic, thereby 
providing better service for selected applications.