Application Flows Test

The Citrix NetScaler appliance is a central point of control for all application traffic in the data center. It collects flow and user-session level information valuable for application performance monitoring, analytics, and business intelligence applications. The AppFlow freature, when enabled on the NetScaler, transmits this information by using the Internet Protocol Flow Information eXport (IPFIX) format, which is an open Internet Engineering Task Force (IETF) standard defined in RFC 5101. Using UDP as the transport protocol, AppFlow transmits the collected data, called flow records, to one or more IPv4 collectors. The collectors aggregate the flow records and generate real-time or historical reports.

To enable administrators to promptly detect bottlenecks (if any) in the transmission of flow records to configured collectors, the Application Flows test runs periodic checks on data transmissions from the NetScaler appliance.

Target of the test : A NetScaler VPX/MPX

Agent deploying the test : A remote agent

Outputs of the test : One set of results for the NetScaler appliance being monitored.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed

Host

The IP address of the host for which the test is being configured.

NetScaler Username and NetScaler Password

To monitor a NetScaler device, the eG agent should be configured with the credentials of a user with read-only privileges to the target NetScaler device. Specify the credentials of such a user in the NetScaler Username and NetScaler Password text boxes.

SSL

The eG agent collects performance metrics by invoking NITRO (NetScaler Interface Through Restful interfaces and Objects) APIs on the target NetScaler device. Typically, the NITRO APIs can be invoked through the HTTP or the HTTPS mode. By default, the eG agent invokes the NITRO APIs using the HTTPS mode. This is why, the SSL flag is set to Yes by default. If the target NetScaler device is not SSL-enabled, then the NITRO APIs can be accessed through the HTTP mode only. In this case, set the SSL flag to No.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Appflow transmitted

Indicates the number of Appflow flows transmitted by the NetScaler during the last measurement period.

Number

 

Appflow not transmitted

Indicates the number of Appflows that were not transmitted during the last measurement period.

Number

A high value is indicative of a transmission bottleneck. This could be owing to improper collector configuration or a bad network link between the appliance and the collector.

Appflow data transmitted

Indicates the amount of Appflow octets transmitted by the NetScaler during the last measurement period.

MB

 

Appflow data not transmitted

Indicates the amount of Appflow octets that were not transmitted during the last measurement period.

MB

A high value is indicative of a transmission bottleneck. This could be owing to improper collector configuration or a bad network link between the appliance and the collector.

Appflow data ignored

Indicates the amount of Appflow octets that were ignored by the NetScaler during the last measurement period.

MB

 

Appflow packets ignored

Indicates the number of Appflow packets that were ignored by the NetScaler during the last measurement period.

Number

 

Appflow packets not transmitted

Indicates the number of Appflow packets that were not transmitted by the NetScaler during the last measurement period.

Number

A high value is indicative of a transmission bottleneck. This could be owing to improper collector configuration or a bad network link between the appliance and the collector.

Appflow messages transmitted

Indicates the number of Appflow messages transmitted by the NetScaler during the last measurement period.

Number