Monitor Traffic
To get an overview of real-time traffic and bandwidth-management activity
for each class, you can display the Monitor Traffic window by clicking
the monitor tab.  show screen
This window provides an instant snapshot of the current activity
for all traffic classes, partitions, and policies. For example, you can
see the current, average, and peak rates for each class.
Understanding the Monitor Traffic Window
The Monitor Traffic window lists the following information for
each traffic class (unless you have chosen not to display certain columns):
| Column |
Description |
| Report |
Clicking the 
icon displays the Statistics:Reports page for the class.
You can immediately click create report
to view the default graph (Class Utilization with Peaks for the
last hour), or you can modify the report (select additional graphs,
change the period, etc.). For details on creating a report in this
screen, see Create a Graph.
Note: This icon doesn't appear on the PacketShaper 1200 model.
|
| Class Hits |
Number of times flows match the class. Class hits occur
only at the beginning of a flow or session.
Classes created by traffic discovery do not show the first few connections
for each traffic type. These initial hits are counted in the Default
class.
Note: In a configuration in which the
PacketShaper sits between subnets and a router,
traffic between two inside hosts will pass through the unit twice:
once toward the router, then again back from the router to the other
inside host. This results in double hit counts on a SameSide class.
For example, four ping packets from one inside host to another would
create eight class hits, as opposed to four with a standard setup
(inside host to outside host).
|
| Policy Hits |
Number of times the policy has been enforced |
| Current (bps) |
The current rate values in bits per second |
| 1 Min (bps) |
Last minute's average rate |
| Peak (bps) |
The current peak values
Note: Partitions have a 6% tolerance. Therefore, it is possible
for an inbound traffic class to have a peak that exceeds the overall
inbound peak. |
| Guar. Rate Failures |
The number of times a failure to allocate guaranteed
rate occurred. The Guaranteed Rate Failure is always 0 at startup.
|
| Pkt Exch (ms) |
The average packet exchange time, which is the packet
exchange time divided by the number of samples. NA means no packet
exchange time samples were recorded.
The packet exchange time is the interval between a data packet
leaving a PacketShaper and the arrival of its acknowledgment
(ACK). This variable is sampled every minute. Acknowledgments to synchronization
flags (SYNs) are not included in this measurement. For more information,
see Packet
Exchange Time Technical Details.
Note: This column does not appear on PacketShaper ISP models
or the PacketShaper 1200 model. |
Partition
Min-Max |
The minimum and maximum amount of bandwidth allocated for a class
subtree. (Click the partition to modify it.)
Uncommitted is the difference between the current link speed
and the sum of all committed partition minimums. Uncommitted
indicates that the partition size is dynamically determined at run
time and the minimum allocation is whatever is not committed to
other partitions.
None indicates that the partition is burstable without a
limit.
If the min and max values are the same, the partition is fixed and
non-burstable.
If a percentage appears after the partition size, the partition
was specified as a percentage of the parent partition's size. Example:
450k (10%) for the Inbound/HTTP class indicates that HTTP's
partition size is 10% of the Inbound partition's size, resulting
in a partition size of 450 Kbps (assuming the link size is 4.5 Mbps).
If a down arrow appears next to the partition size, the partition
is dynamic. Place the mouse pointer on the down arrow and the parameters
of the dynamic partition will be displayed: minimum and maximum
subpartition size, the number of active and idle users currently
using subpartitions, and the maximum number of subpartitions available.
|
Policy
Type (Pri.)
Guar.-Limit |
Shows the policy (if any) applied to the class. (Click
the policy to modify it.)
For a priority policy, the defined priority is shown.
For a rate policy, the guaranteed rate setting, cap, and burstable
priority level are shown. |
| Top User Analysis |
Microphone and ear icons indicate if Top Talkers and
Top Listeners are being tracked for the class. See List
Top Hosts.
To view the top bandwidth talkers and listeners, click the respective
icons to display a page of transmitter or receiver statistics. |
See also:
Reset Monitor Statistics
Update the Monitor Statistics
Select and Sort
Collapse and Expand
the Traffic Tree
Verify Traffic Classes
|
