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5 bandwidth management priorities – ZyXEL Communications NBG420N User Manual

Page 200

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Chapter 17 Bandwidth Management

NBG420N User’s Guide

200

The following figure shows LAN subnets. You could configure one bandwidth class for subnet
A and another for subnet B.

Figure 120 Subnet-based Bandwidth Management Example

17.4 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.

17.5 Bandwidth Management Priorities

The following table describes the priorities that you can apply to traffic that the NBG420N
forwards out through an interface.

Table 71 Application and Subnet-based Bandwidth Management Example

TRAFFIC TYPE

FROM SUBNET A

FROM SUBNET B

VoIP

64 Kbps

64 Kbps

Web

64 Kbps

64 Kbps

FTP

64 Kbps

64 Kbps

E-mail

64 Kbps

64 Kbps

Video

64 Kbps

64 Kbps

Table 72 Bandwidth Management Priorities

PRIORITY LEVELS: TRAFFIC WITH A HIGHER PRIORITY GETS THROUGH FASTER WHILE

TRAFFIC WITH A LOWER PRIORITY IS DROPPED IF THE NETWORK IS CONGESTED.

High

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

is the variations in delay).