Edit Flow Source Properties
You can edit configuration properties of a NTA Flow source from either:
- NTA Sources Library ( menu ). Select a source listed in the grid and click 'edit' ().
- Row options () for most NTA Dashboard reports, for example those that include interface metrics ( ).
Name and Licensing
- . Friendly label for the flow source.
- . Data collection is switched 'On' by default when a flow source is found on your network. When this checkbox is checked it denotes use of an NTA license instance.
SNMP Polling Options
Hide Interfaces, Show Interfaces, and Define Interface Bandwidth (Needed for Capacity Utilization Calculation)
Hiding interfaces can be useful when you have specific interfaces that need no performance monitoring or monitoring is happening by way of a different flow source.
- To hide or show interfaces from the Flow Properties dialog, select an interface, then click orto hide
- To hide, show, and define interface bandwidth, select an interface and then click on .
If nominal network interface speed used to calculate bandwidth capacity utilization is incorrect or not populated at the device's management object, you can define a custom speed using the dialog.
Hide and Show Interfaces and Define Total Network Bandwidth (for Calculation Purposes)
- Select an interface from the Interfaces list window.
The Flow Interface dialog displays.
- . Hides the selected interface from the Network Traffic Analysis reports and dashboards. This enables you to display only the interfaces relevant to your bandwidth monitoring objectives.
: Null(0) interface names are hidden by default because they are not a true source interface. Null(0) interfaces show traffic that a router has dropped or traffic that a router has generated. In both cases the ifIndex = 0 and as a default convention we name an interface = Null because the interface is non existent. If you want Null(0) interface information to display as a source interface, uncheck the option.
- . Enable this option to collect traffic which entered the source through one of its interfaces but did not leave the source possibly due to traffic going to the source (e.g., communicating with the source itself) or because the traffic should not have been sent to the source.
- . Enable this option to collect traffic which did not enter the source, had no input interface, but left the source. This is traffic generated by the source (e.g., responses to polling).
- . Enable this Cisco ASA specific option to use the translated sender and receiver IP Addresses as well as the translated sender and receiver port numbers.
- . Click this check box to enable the and text boxes.
- and . Define the speed of each interface, which is used to calculate bandwidth capacity as a percentage of the total interface speed. Enter the upper limit of the interface in bps (bits per second). Common interface speeds expressed in bps are:
- 1 Gbps = 1,000,000,000 bps
- 100 Mbps = 100,000,000 bps
- 10 Mbps = 10,000,000 bps
- Click to save your settings.