ZyXEL Communications ZyWall USG 50-H Series User Manual page 401

Figure 340 Bandwidth Management Behavior
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 135 Configured Rate Effect
POLICY CONFIGURED RATE MAX. B. U. PRIORITY
A
B
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 for server B.
Table 136 Priority Effect
POLICY CONFIGURED RATE MAX. B. U. PRIORITY
A
B
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 137 Maximize Bandwidth Usage Effect
POLICY CONFIGURED RATE MAX. B. U. PRIORITY
A
B
ZyWALL USG 50-H User's Guide
1000 kbps
1000 kbps
300 kbps No
200 kbps No
800 kbps Yes
1000 kbps Yes
300 kbps Yes
200 kbps Yes
Chapter 26 Application Patrol/BWM
BWM
1000 kbps
ACTUAL RATE
1 300 kbps
1 200 kbps
ACTUAL RATE
1 800 kbps
2 200 kbps
ACTUAL RATE
1 550 kbps
2 450 kbps
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