ZyXEL Communications USG40 User Manual page 410

Figure 286 Bandwidth Management Behavior
1000 kbps
1000 kbps
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 160 Configured Rate Effect
POLICY CONFIGURED RATE
A 300 kbps
B 200 kbps
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 161 Priority Effect
POLICY CONFIGURED RATE
A 800 kbps
B 1000 kbps
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/USG 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 162 Maximize Bandwidth Usage Effect
POLICY CONFIGURED RATE
A 300 kbps
B 200 kbps
Chapter 24 BWM (Bandwidth Management)
BWM
1000 kbps
MAX. B. U.
No
No
MAX. B. U.
Yes
Yes
MAX. B. U.
Yes
Yes
ZyWALL/USG Series User's Guide
410
PRIORITY ACTUAL RATE
1 300 kbps
1 200 kbps
PRIORITY ACTUAL RATE
1 800 kbps
2 200 kbps
PRIORITY ACTUAL RATE
1 550 kbps
2 450 kbps