Chapter 21 Bandwidth Management

21.5 Application and Subnet-based Bandwidth Management

You could also create bandwidth classes based on a combination of a subnet and an application. The following example table shows bandwidth allocations for application specific traffic from separate LAN subnets.

Table 119 Application and Subnet-based Bandwidth Management Example

TRAFFIC TYPE

FROM SUBNET A

FROM SUBNET B

VoIP (SIP)

64 Kbps

64 Kbps

 

 

 

Web

64 Kbps

64 Kbps

 

 

 

FTP

64 Kbps

64 Kbps

 

 

 

E-mail

64 Kbps

64 Kbps

 

 

 

21.5.1 Bandwidth Management Priorities

Traffic with a higher priority gets through faster while traffic with a lower priority is dropped if the network is congested. The following table describes the priorities that you can apply to traffic that the ZyXEL Device forwards out through an interface.

Table 120 Bandwidth Management Priorities

PRIORITY

DESCRIPTION

High

Typically used for voice traffic or video that is especially sensitive to jitter (variations in

 

delay).

 

 

Mid

Typically used for “excellent effort” or better than best effort and would include important

 

business traffic that can tolerate some delay.

 

 

Low

This is typically used for non-critical “background” traffic such as bulk transfers that are

 

allowed but that should not affect other applications and users.

 

 

21.6 Configuring Bandwidth Management (General)

Click Advanced > Bandwidth MGMT to open the screen as shown next.

Use this screen to enable or disable bandwidth management, and to enable or disable automatic traffic classification.

Figure 170 Bandwidth Management: General

 

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