Overview of Bandwidth Management

Definition

Bandwidth management is a feature that enables a FW to measure and control traffic based on parameters specified in traffic policies. A traffic policy based on the following conditions:

• Source security zone or inbound interface
• Destination security zone or outbound interface
• Source address or region
• Destination address or region
• User name
• Service name
• Application name
• URL categories
• Schedule
• DSCP value

Objective

Bandwidth management is used to improve the efficiency of bandwidth resource use and prevent the bandwidth capacity of a link or device from being exhausted. Bandwidth management provides the following functions:

• Bandwidth limit

  A limit can be set on the amount of bandwidth that non-key services are allowed to use.

• Bandwidth guarantee for key services

  When a link is busy, a FW can ensure the availability of sufficient bandwidth for key services transmitted over the link.

• Connection limit (concurrent connection limit and new connection limit)

  The maximum number of service connections can be set to ensure efficient use of session resources and prevent a specific service from overusing bandwidth resources.

By configuring bandwidth management policies on the FW, an administrator can properly allocate bandwidth resources and improve network performance.