Chapter 27 Application Patrol
Figure 298 Bandwidth Management Behavior
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27.4.5.1 Configured Rate Effect
In the following table the configured rates total less than the available bandwidth and maximize bandwidth usage is disabled, both servers get their configured rate.
Table 108 Configured Rate Effect
POLICY | CONFIGURED RATE | MAX. B. U. | PRIORITY | ACTUAL RATE |
A | 300 kbps | No | 1 | 300 kbps |
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B | 200 kbps | No | 1 | 200 kbps |
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27.4.5.2 Priority Effect
Here the configured rates total more than the available bandwidth. Because server A has higher priority, it gets up to it’s configured rate (800 kbps), leaving only 200 kbps that server B can use.
Table 109 | Priority Effect |
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POLICY |
| CONFIGURED RATE | MAX. B. U. | PRIORITY | ACTUAL RATE |
A |
| 800 kbps | Yes | 1 | 800 kbps |
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B |
| 1000 kbps | Yes | 2 | 200 kbps |
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27.4.5.3 Maximize Bandwidth Usage Effect
With maximize bandwidth usage enabled, after each server gets its configured rate, the rest of the available bandwidth is divided equally between the two. So server A gets its configured rate of 300 kbps and server B gets its configured rate of 200 kbps. Then the ZyWALL divides the remaining bandwidth (1000 - 500 = 500) equally between the two (500 / 2 = 250 kbps for each). The priority has no effect on how much of the unused bandwidth each server gets.
So server A gets its configured rate of 300 kbps plus 250 kbps for a total of 550 kbps. Server B gets its configured rate of 200 kbps plus 250 kbps for a total of 450 kbps.
Table 110 Maximize Bandwidth Usage Effect
POLICY | CONFIGURED RATE | MAX. B. U. | PRIORITY | ACTUAL RATE |
A | 300 kbps | Yes | 1 | 550 kbps |
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B | 200 kbps | Yes | 2 | 450 kbps |
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ZyWALL USG 1000 User’s Guide | |
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