10/14/2021 616 People found this article helpful 471,427 Views
Bandwidth management (BWM) is a means of allocating bandwidth resources to critical applications on a network. Global BWM is controlled by the SonicWall Security Appliance on ingress (inbound) and egress (outbound) traffic. It allows network administrators to guarantee minimum bandwidth
and prioritize traffic based on access rules. Balancing the bandwidth allocated to different network traffic and then assigning priorities to traffic can improve network performance.
Global BWM works by first enabling bandwidth management on an interface and then allocating the available bandwidth for that interface on the ingress and egress traffic. It then assigns individual limits for each class of network traffic. By assigning priorities to network traffic,applications requiring a quick response time, such as Telnet, can take precedence over traffic requiring less response time, such as FTP.
Global BWM provides eight priority queues:
Priority |
0 Realtime |
1 Highest |
2 High |
3 Medium High |
4 Medium |
5 Medium Low |
6 Low |
7 Lowest |
This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.
To view the BWM configuration
TIPS:
BWM Types
Configuring WAN Bandwidth Management (BWM)
NOTE: Every time the Bandwidth Management Type is changed, all bandwidth management settings on the Firewall Rules will be reset to the factory defaults; therefore, you must reconfigure those rules.
Enabling Bandwidth Management on the WAN Interface
BWM configurations begin by enabling BWM on the relevant WAN interface, and declaring the interface’s available bandwidth in Kbps (Kilobits per second).
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.Once one or both BWM settings are enabled on the WAN interface and the available bandwidth has been declared, a Bandwidth tab will appear on Access Rules. The Bandwidth tab will present either Inbound settings, Outbound settings, or both, depending on what was enabled on the WAN interface:
Configuring Global Bandwidth Management (BWM)
Enabling Bandwidth Management on LAN / DMZ Interfaces
NOTE: The Bandwidth Management section will be greyed-out in non-WAN interfaces if the Bandwidth Management Type is either WAN or None, and will be configurable only when it is set to Global.
Global BWM Option in Access Rules
NOTE: All priorities will be displayed (Realtime – Lowest) regardless if all have been configured. Refer to the Firewall Settings | Bandwidth Management page to determine which priorities are enabled. If the Bandwidth Management Type is set to Global and you select a Bandwidth Priority that is not enabled, the traffic is automatically mapped to the level 4 priority (Medium). For a BWM Type of WAN, the default priority is level 7 (Low).
BWM Option in App Rules
A number of BWM action options are also available in the predefined, default action list. The BWM action options change depending on the Bandwidth Management Type setting on the Firewall Settings | Bandwidth Managementpage. If the Bandwidth Management Type is set to Global, all eight levels of BWM are available. If the Bandwidth Management Type is set to Advanced, the predefined actions list includes three levels of Advanced BWM.
The following table lists the predefined default actions that are available when adding a policy.
The below resolution is for customers using SonicOS 6.2 and earlier firmware. For firewalls that are generation 6 and newer we suggest to upgrade to the latest general release of SonicOS 6.5 firmware.
To view the BWM configuration, navigate to Firewall Settings | BWM page.
TIPS:
BWM TYPES
Configuring WAN Bandwidth Management (BWM)
NOTE: Every time the Bandwidth Management Type is changed, all bandwidth management settings on the Firewall Rules will be reset to the factory defaults; therefore, you must reconfigure those rules.
Enabling Bandwidth Management on the WAN Interface
BWM configurations begin by enabling BWM on the relevant WAN interface, and declaring the interface’s available bandwidth in Kbps (Kilobits per second).
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.Once one or both BWM settings are enabled on the WAN interface and the available bandwidth has been declared, a Bandwidth tab will appear on Access Rules. The Bandwidth tab will present either Inbound settings, Outbound settings, or both, depending on what was enabled on the WAN interface:
Configuring Global Bandwidth Management (BWM)
Enabling Bandwidth Management on LAN / DMZ Interfaces
NOTE: The Bandwidth Management section will be greyed-out in non-WAN interfaces if the Bandwidth Management Type is either WAN or None, and will be configurable only when it is set to Global.
Global BWM Option in Access Rules
NOTE: All priorities will be displayed (Realtime – Lowest) regardless if all have been configured. Refer to the Firewall Settings | BWM page to determine which priorities are enabled. If the Bandwidth Management Type is set to Global and you select a Bandwidth Priority that is not enabled, the traffic is automatically mapped to the level 4 priority (Medium). For a BWM Type of WAN, the default priority is level 7 (Low).
BWM Option in App Rules
A number of BWM action options are also available in the predefined, default action list. The BWM action options change depending on the Bandwidth Management Type setting on the Firewall Settings | BWM page. If the Bandwidth Management Type is set to Global, all eight levels of BWM are available. If the Bandwidth Management Type is set to WAN, the predefined actions list includes three levels of WAN BWM.
The following table lists the predefined default actions that are available when adding a policy.