Show Link Utilization
The Network Performance Summary ( show screen)
is automatically displayed when you click the report tab. This
report offers a quick way to analyze link utilization. It displays graphs
of the managed link's inbound and outbound traffic. Specifically, it contains
the following items:
- Bandwidth Utilization line graphs — Shows the links average
and peak bandwidth usage in bits per second
- Network Efficiency line graphs — Shows the percentage
of all bytes that are not TCP retransmits, giving you an indication
of overall network health. For example, a value of 95% indicates that
of all traffic on the network (TCP and UDP), 5% was retransmitted TCP
traffic. (UDP is assumed to be 100% efficient since retransmissions
are not calculated on this type of traffic.)
- Top 10 Classes pie charts — Shows the relative portions
of bandwidth allocated to the ten most active classes on the network;
displays each class' average bandwidth usage in bits per second and
its percentage of the total bandwidth on the link
- Total kilobytes sent (outbound) and received (inbound) during the
interval
If a green horizontal line appears above the Bandwidth Utilization and
Network Efficiency line graphs, traffic shaping was enabled during the
graphing interval. This line shows you exactly when shaping was turned
on so that you can easily view and interpret the consequences of your
policies and partitions.
show screen
For information on analyzing this report, see the following PacketGuide
Recommendations:
Analyze
your Link's Behavior
Identify
Performance Saboteurs
Access
Wasted Network Capacity
By default, the Network Performance Summary graphs analyze network traffic
over the last hour, but the time period and end date are user-customizable.
See Selecting
a Time Period.
See also:
Graph Multiple Classes
Graph a Specific Link, Partition, or Class
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