Cisco ROUTER-SDM-CD User Manual page 893

Chapter 42 Viewing Router Information
Interface List
Select Chart Types to Monitor Group
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Select the interface for which you want to display statistics from this list. The list
contains the name, IP address and subnet mask, the slot and port it is located in,
and any Cisco SDM or user description entered.
These check boxes are the data items for which Cisco SDM can show statistics on
the selected interface. These data items are as follows:
Packet Input—The number of packets received on the interface.
•
Packet Output—The number of packets sent by the interface.
•
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 computed
after the second view interval, the bandwidth percentage graph shows the
correct bandwidth 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.
•
Errors Input—The number of errors occurring while receiving data on the
•
interface.
Errors Output—The number of errors occurring while sending data from the
•
interface.
Packets flow—The number of packets in the flow for the chosen interface.
•
This data item appears only if configured under Configure > Interfaces and
Connections > Edit > Application Service for the chosen interface.
Cisco Router and Security Device Manager 2.5 User's Guide
Interface Status
42-7