•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.
19.6.2.2Fairness-based Allotment of Unused and Unbudgeted Bandwidth
The following table shows the amount of bandwidth that each class gets.
Table 118
BANDWIDTH CLASSES AND ALLOTMENTS
Root Class: 10240 kbps | Administration: 1024 kbps |
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| Sales: 3072 kbps |
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| Marketing: 3072 kbps |
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| Research: 3072 kbps |
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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.
19.6.3Bandwidth Management Priorities
The following table describes the priorities that you can apply to traffic that the ZyXEL Device forwards out through an interface.
Table 119 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). |
|
|
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 |
| that are allowed but that should not affect other applications and users. |
19.7 Configuring Summary
Click Advanced > Bandwidth MGMT to open the screen as shown next.
Enable bandwidth management on an interface and set the maximum allowed bandwidth for that interface.
Chapter 19 Bandwidth Management | 297 |