Fairness-Based Allotment Of Unused And Unbudgeted Bandwidth; Bandwidth Management Priorities; Table 68 Fairness-Based Allotment Of Unused And Unbudgeted Bandwidth Example; Table 69 Bandwidth Management Priorities - ZyXEL Communications P-660HW-T V2 - VERSION 3.40 User Manual

• Research requires more bandwidth but only gets its budgeted 2048 kbps because all of the
unbudgeted and unused bandwidth goes to the higher priority sales and marketing
classes.

13.6.2.2 Fairness-based Allotment of Unused and Unbudgeted Bandwidth

The following table shows the amount of bandwidth that each class gets.

Table 68 Fairness-based Allotment of Unused and Unbudgeted Bandwidth Example

BANDWIDTH CLASSES AND ALLOTMENTS
Root Class: 10240 kbps
Suppose that all of the classes except for the administration class need more bandwidth.
• Each class gets up to its budgeted bandwidth. The administration class only uses 1024
kbps of its budgeted 2048 kbps.
• The ZyXEL Device divides the total 3072 kbps total of unbudgeted and unused
bandwidth equally among the other classes. 1024 kbps extra goes to each so the other
classes each get a total of 3072 kbps.

13.6.3 Bandwidth Management Priorities

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

Table 69 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
Mid
Low
Chapter 13 Bandwidth Management
Administration: 1024 kbps
Sales: 3072 kbps
Marketing: 3072 kbps
Research: 3072 kbps
Typically used for voice traffic or video that is especially sensitive to jitter (jitter
is the variations in delay).
Typically used for "excellent effort" or better than best effort and would include
important business traffic that can tolerate some delay.
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.
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