Technical Documentation

Configuring Accounting Options (NSM Procedure)

You can configure accounting for traffic passing through the router, containing a Monitoring Services PIC or an Adaptive Services PIC. Configuring an accounting option includes configuring the output flow aggregation and configuring the interface that sends out monitored information.

To configure an accounting group in NSM:

  1. In the NSM navigation tree, select Device Manager > Devices.
  2. Click the Device Tree tab, and then double-click the device to select it.
  3. Click the Configuration tab. In the configuration tree, expand Forwarding Options.
  4. Select Accounting.
  5. Add or modify the settings as specified in Table 1.
  6. Click one:
    • OK—Saves the changes.
    • Cancel—Cancels the modifications.

Table 1: Accounting Options Configuration Details

Task Your Action

Configure an accounting group.
  1. Click Add new entry next to Accounting.
  2. In the Name box, type the name of the accounting group.

Configure flow output.
  1. Expand Output.
  2. In the Comment box, enter the comment for the output.
  3. From the Aggregate export Interval list, select the time.
  4. From the Flow Inactive Timeout list, select the interval before a flow is considered inactive.
  5. From the Flow Active Timeout list, select the interval before exporting an active flow.

Configure flow aggregation.
  1. Click Add new entry next to cflowd.
  2. In the Name box, Enter the IP address or identifier of the host system (the workstation running the cflowd utility).
  3. From the Port list, select the UDP port number on the cflowd host system.
  4. From the Version list, select the version format of the aggregated flows exported to a cflowd server.
  5. From the Autonomous System Type, select the type of AS numbers that cflowd exports.
    • origin—Export origin AS numbers of the packet source address in the Source Autonomous System cflowd field.
    • peer—Export peer AS numbers through which the packet passed in the Source Autonomous System cflowd field.

      Default: origin

  6. Click Aggregation next to cflowd.
  7. Select Autonomous System check box to aggregate by autonomous system (AS) type.
  8. Select the Protocol Port check box to aggregate by protocol and port number.
  9. Select the Source Prefix check box to aggregate by source prefix.
  10. Select the Destination Prefix check box to aggregate by destination prefix.
  11. Expand Aggregation.
  12. Click Source Destination Prefix next to Aggregation.
  13. Select the Caida Compliant check box to record source and destination mask length values in compliance with the Version 2.1b1 release of the cflowd application from the Cooperative Association for Internet Data Analysis (CAIDA).

Configure the output interface.
  1. Expand Output.
  2. Click Interface next to Output.
  3. Click Add new entry next to Interface.
  4. In the Name box, enter the name of the accounting interfaces.
  5. In the Comment box, enter the comment for the interface.
  6. From the Engine Id list, select the identity of the accounting interface.
  7. From the Engine Type list, select the type of this accounting interface.
  8. In the Source Address box, enter the address used for generating packets.

Published: 2009-08-23