Справочник Пользователя для SonicWALL 5.8.1

SonicOS offers an integrated traffic shaping mechanism through its Egress (outbound) and 
Ingress (inbound) management interfaces. Outbound BWM can be applied to traffic sourced 
from Trusted and Public zones (such as LAN and DMZ) destined to Untrusted and Encrypted 
zones (such as WAN and VPN). Inbound bandwidth management can be applied to traffic 
sourced from Untrusted and Encrypted zones destined to Trusted and Public zones.

Enabling bandwidth management allows you to assign guaranteed and maximum bandwidth to 
services and prioritize traffic on all WAN zones. Using access rules, bandwidth management 
can be enabled on a per-interface basis. Packets belonging to a bandwidth management 
enabled policy will be queued in the corresponding priority queue before being sent on the 
bandwidth management-enabled WAN interface. Access rules using bandwidth management 
have a higher priority than access rules not using bandwidth management. Access rules 
without bandwidth management are given lowest priority.

QoS encompasses a number of methods intended to provide predictable network behavior and 
performance. Network predictability is vital to VoIP and other mission critical applications. No 
amount of bandwidth can provide this sort of predictability, because any amount of bandwidth 
will ultimately be used to its capacity at some point in a network. Only QoS, when configured 
and implemented correctly, can properly manage traffic, and guarantee the desired levels of 
network service.

SonicOS includes QoS features that adds the ability to recognize, map, modify and generate 
the industry-standard 802.1p and Differentiated Services Code Points (DSCP) Class of Service 
(CoS) designators.

For more information on QoS and BWM, see . Refer to the Configuring QoS and BWM 
Feature Module for complete BWM and QoS configuration instructions. Available on the 
SonicWALL Web site at: