Chapter 19 Application Patrol
NXC5200 User’s Guide
270
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 NXC 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.
Priority and Over Allotment of Bandwidth Effect
Server A has a configured rate that equals the total amount of available
bandwidth and a higher priority. You should regard extreme over allotment of
traffic with different priorities (as shown here) as a configuration error. Even
though the NXC still attempts to let all traffic get through and not be lost,
regardless of its priority, server B gets almost no bandwidth with this
configuration.
Table 97
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 98
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
Table 99
Priority and Over Allotment of Bandwidth Effect
POLICY
CONFIGURED RATE
MAX. B. U.
PRIORITY
ACTUAL RATE
A
1000 kbps
Yes
1
999 kbps
B
1000 kbps
Yes
2
1 kbps