System information

Network Activity Display 89
at a glance the health of a network and can warn of impending slowdowns due to
broadcast or multicast storms.
The indicator lines change color for easy viewing of specific network conditions:
• If an indicator line is yellow, the NAD is showing a network condition that is
essentially idle (total net utilization is under 5%).
In this case, the percentage of broadcast or multicast packets may be
high compared to actual traffic. However, because the traffic is so low, this
condition is not statistically important.
• If an indicator line segment is green, the NAD is displaying a normal network
condition.
• If an indicator line segment displays red, the NAD is letting you know that a load
condition exists.
This is not necessarily a problem, but indicates that you should be aware
of this condition.
• Load conditions can mean different things depending on where the red vs. blue
vs. green lines appear. Typically, a red line means that a threshold has been
overcome. Blue lines display on the side where the threshold may be an
indication of trouble.
• By default, red lines will be displayed if broadcast or multicast packets are
representing more than 10% of total network utilization or if utilization goes
over 35%.