4.1 Basic Parameters
4.1.1 Bandwidth
The Bandwidth row is used to configure the link rate of the emulated WAN.
The link rate is set independently in each direction in increments of 1 bps, with a minimum rate of
300 bps and a maximum rate determined by the license key. Entered rates can not have fractional
bits per second.
The link rate is set in units of bps (bits per second), Kbps (kilobits per second), Mbps (megabits
per second), or Gbps (gigabits per second) selected from the drop-down menu next to the rate.
If the entered link rate is not a valid value when the
Apply Changes
button is pressed, a red error
box will be drawn around the invalid fields and the changes will not be applied.
1 Kbps is 1,000 bps, not 1,024 bps. Similarly, 1 Mbps is 1,000,000 bps.
4.1.2 Delay
The Delay parameter specifies the link latency in milliseconds, and is set independently for each
direction. Delay can be set from 0 milliseconds to 10 seconds. Entered values are rounded to the
nearest 0.1 millisecond. The delay parameter will not reorder frames.
The radio buttons are used to specify the delay distribution:
Constant: A single, fixed value for delay.
Uniform: A uniform distribution of delay ranging between the configured minimum and
maximum values.
Normal: A truncated normal distribution curve, with a specified minimum, mean and
standard deviation.
If the entered minimum delay is greater than the entered maximum (for a uniform distribution) or
mean (for a normal distribution), a red error box will be drawn around the invalid fields when the
Apply Changes
button is pressed and the changes will not be applied.
The round trip time (RTT) of the link is the sum of the delay in both directions.
S
ECTION
4
L
INK
E
MULATION
T
AB
:
L
INK
E
MULATION
P
ARAMETER
C
ONFIGURATION
16
