ZyXEL Communications 200 Series - Manual (Page 447)

Chapter 27 Application Patrol
ZyWALL USG 100/200 Series User’s Guide
447
Figure 356 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.
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.
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.
1000 kbps
1000 kbps
BWM
1000 kbps
Table 133 Configured Rate Effect
POLICY CONFIGURED RATE MAX. B. U. PRIORITY ACTUAL RATE
A 300 kbps No 1 300 kbps
B 200 kbps No 1 200 kbps
Table 134 Priority Effect
POLICY CONFIGURED RATE MAX. B. U. PRIORITY ACTUAL RATE
A 800 kbps Yes 1 800 kbps
B 1000 kbps Yes 2 200 kbps
Table 135 Maximize Bandwidth Usage Effect
POLICY CONFIGURED RATE MAX. B. U. PRIORITY ACTUAL RATE
A 300 kbps Yes 1 550 kbps
B 200 kbps Yes 2 450 kbps