How to Configure Global Bandwidth Management (5.8.1.0 and above)

Question ID : 282
Created on 2013-07-07 at 4:06 PM
Author : Guru Corner [support@guru-corner.com]

Online URL : http://kb.guru-corner.com/question.php?ID=282



Article Applies To:

Gen5: NSA E8500, NSA E7500, NSA E6500, NSA E5500, NSA 5000, NSA 4500, NSA 3500, NSA 2400, NSA 2400 MX, NSA 240
Gen5 TZ Series: TZ 100, TZ 100 Wireless, TZ 200, TZ 200 W, TZ 210, TZ 210 Wireless

Firmware/Software Version: SonicOS 5.8.1.0 and above
Services: BWM


Feature/Application:

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 created in the Firewall > Access Rules page on the SonicWALL management interface. 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

Procedure:

To view the BWM configuration, navigate to the Firewall Settings > BWM page.

Note:

WAN   :  Only WAN zones can have assigned guaranteed and maximum bandwidth to services and have prioritized traffic.
Global:  (Default) All zones can have assigned guaranteed and maximum bandwidth to services and have prioritized traffic.
None  :  Disables BWM.


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:

Configuring Global Bandwidth Management (BWM):

When changing BWM settings, the following warning message will be displayed. Click on OK to continue.


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

The following option is available in the Ethernet BWM tab of a rule under Firewall > Access Rules when Bandwidth Management Type is set to Global.

 
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:

Actions Objects when Bandwidth Management Type is set to WAN.



Actions Objects when Bandwidth Management Type is set to Global.


BWM in App Rules Policies



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