Specifications

Scenarios 3-24

NAM / Traffic Analyzer v3.5 Tutorial

Scenarios 3-24

NAM / Traffic Analyzer v3.5 Tutorial

Scenario 2

Interface Utilization

Scenario 2

Interface Utilization

Check interface usage for any indication of problems.

Monitor > Router > Interface Stats

See next page

Select interface and click

Details for application, host,

and conversation statistics

Select interface and click

Details for application, host,

and conversation statistics

Interface Utilization

Dean can now look at the utilization of each of the host Router’s interfaces.

Step 1. Click Monitor > Router > Interface Stats. The Interface Stats report is displayed.

Most of the monitor views offer three perspectives—Current Rates, TopN Chart, and Cumulative Data.

These can be chosen by clicking the radio buttons at the top of the data table. By default, the Current Rates

table is displayed first when Port Stats is chosen. This table provides statistics for traffic collected during the

last refresh cycle only. The TopN chart provides a list of ports ranked by volume for data during the last

refresh cycle only, and the Cumulative Data table provides absolute values for data collected since the min-

RMON counters were last cleared.

The refresh cycle can be modified by selecting Setup > Preferences, changing the Refresh Interval, and

clicking Apply. If the Auto Refresh check box is selected on any data screen, the tables and charts will be

refreshed as new data is collected.

Using these views, Dean happily notes that all connected interfaces on the core branch router are barely

utilized. This confirms the bandwidth predictions Q-Bits used to design its network. If any abnormally high

utilization or error conditions had existed, Dean could use them to help determine where to begin looking for

the causes.

Since the serial link is connected to the WAN, Dean decides to probe it a little. He selects Se0/0 and clicks

Details.