Cisco Systems OL-4015-08 Interface Status Area

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Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08
Chapter32 Viewing Router Information
Interface Status
•Bandwidth Usage—The percent of bandwidth used by the interface, shown as
a percentage value. Here is how bandwidth percentage is computed:
Bandwidth percentage=(Kbps/bw) * 100,
where
bits per second= ((change in input+change in output) * 8) / poll interval
Kbps= bits per second/1024
bw=bandwidth capacity of the interface
Because the differences in bytes input and bytes output can only be co mputed
after the second view interval, the bandwidth percentage graph shows the
correct bandwidthe usage starting with the second view interval. See the View
Interval section of this topic for polling intervals and view intervals.
•Bytes Input—The number of bytes received on the interface.
•Bytes Output—The number of bytes sent by the interface.
•Input Errors—The number of errors occurring while receiving data on the
interface.
•Output Errors—The number of errors occurring while sending data from the
interface.
To view statistics for any of these items:
Step1 Select the item(s) you want to view by checking the associated check box(es).
Step2 Click Monitor Interface to see statistics for all selected data items.
Interface Status Area
View Interval
This pull-down field selects both the amount of data shown for each item and the
frequency with which the data is updated. It has the following options
Note The polling frequencies listed are approximations and may differ slightly from the
listed times.