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Integrated Traffic Monitoring Configuring ITM and Top Traffic Using the CLI

From the Top Traffic configuration mode, Top Traffic functionality can be configured. Configurable

parameters include the time interval for which Top Traffic data will accumulate, if data will be gathered by

packet or byte observation, how many Top Talkers will be displayed, whether or not an ACL will be used

to filter Top Traffic data, and (optionally) adding custom ports to the port monitoring feature.

Setting the Data Accumulation Interval

To set the minimum amount of time that Top Traffic data is accumulated before it is reported, use the

interval command as shown in the following example:

(config)#ip flow top-talkers

(config-top-talkers)#interval [5 | 10 | 15]

You can choose between 5-minute, 10-minute, and 15-minute intervals for data accumulation. The default

interval is 5 minutes, which indicates that data is collected for 5 minutes, and then available for viewing.

When viewing Top Traffic data, the current interval displayed is the interval set with this command. As the

specified interval for data accumulation ends, the data is compiled into hourly, 24-hourly, and daily

readouts.

Use the no form of this command to reset the interval value to its default (5 minutes).

Specifying Packet or Byte Data Collection

Data used in the Top Traffic collection can be collected by monitoring the number of packets sent or

received or the number of bytes sent or received in a specified amount of time. Collection by byte count

and packet count are mutually exclusive and must be configured by the user, yet each can be helpful

depending on specific network needs. Using packet counts to monitor hosts can make it easier to identify

the source of problems in cases where a host is infected by a virus or attacking the network with a port

scan. Using byte counts can display overall bandwidth consumption on a host-by-host basis. The default

statistic used in Top Traffic is byte count.

To specify the statistic for displaying Top Traffic information, use the sort-by command as shown in the

following example:

(config)#ip flow top-talkers

(config-top-talkers)#sort-by [packets | bytes]

Use the no form of this command to return to the sorting procedure to the default setting (bytes).

Specifying Listing Size

You can specify the number of Top Talkers included in the Top Traffic report. The list can include one to

20 listings, depending on network needs. To set the number of Top Talkers displayed, use the following

command:

(config)#ip flow top-talkers

If the statistic to be gathered is changed once Top Traffic is configured, all existing data

will be lost.

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ADTRAN FNID Información técnica Pagina 31