https://support.sonicwall.com/kb/sw11092

Configure Bandwidth Management (SW11092)

An example is for VoIP Traffic but can be used for QOS of other types of services and or IP Hosts.

Applies to Bandwidth and QOS Priorities in General.

Title

Configure Bandwidth Management

Description

This article shows the steps needed to configure Bandwidth Management. SonicOS offers an integrated traffic shaping mechanism through its Egress (outbound) and Ingress (inbound) bandwidth management (BWM) 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 BWM can be applied to traffic sourced from Untrusted and Encrypted Zones destined to Trusted and Public Zones.

In this article there is a real configuration related to the bandwidth management for VOIP traffic from any source to any destination from LAN to WAN for VOIP service.

Resolution

Video Tutorial: Click here for the video tutorial of this topic

http://bcove.me/ida036jc

Types Of Bandwidth Management:
◦Advanced Maximum egress and ingress bandwidth limitations can be configured on any interface, per interface, by configuring bandwidth objects, access rules, and application policies and attaching them to the interface.
◦Global (Default) All zones can have assigned guaranteed and maximum bandwidth to services and have prioritized traffic. When global BWM is enabled on an interface, all of the traffic to and from that interface is bandwidth managed.


Note: Once BWM has been enabled on an interface, and a link speed has been defined, traffic traversing that link will be throttled—both inbound and outbound—to the declared values, even if no Access Rules are configured with BWM settings.


Step 1: Enabling Bandwidth Management


1) Navigate to Firewall Settings | BWM,
2) On the right side select Advanced radio button near Bandwidth Management Type
3) Click Accept Button at the top.

Go here for the rest of the KB

https://support.sonicwall.com/kb/sw11092