TCP Port Status Test

This test tracks various statistics pertaining to TCP connections to and from a host, from an external perspective. This test is disabled by default for a Generic server. This test is disabled by default. To enable the test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick the desired Component type, set Performance as the Test type, choose the test from the disabled tests list, and click on the < button to move the test to the ENABLED TESTS list. Finally, click the Update button.

Target of the test : Any host system

Agent deploying the test : An external agent

Outputs of the test : One set of results for every configured port name

For some other component-types, like the Oracle database server, this test is enabled by default.

  1. TEST PERIOD - How often should the test be executed
  2. host - Host name of the server for which the test is to be configured
  3. Port - Enter the port to which the specified host listens
  4. targetports – Specify either a comma-separated list of port numbers that are to be tested (eg., 80,7077,1521), or a comma-separated list of port name:port number pairs that are to be tested (eg., smtp:25,mssql:1433). In the latter case, the port name will be displayed in the monitor interface. Alternatively, this parameter can take a comma-separated list of port name:IP address:port number pairs that are to be tested, so as to enable the test to try and connect to Tcp ports on multiple IP addresses. For example, mysql:192.168.0.102:1433,egwebsite:209.15.165.127:80.
  5. TIMEOUT - Here, specify the maximum duration (in seconds) for which the test will wait for a response from the server. The default TIMEOUT period is 60 seconds.
  6. ISPASSIVE – If the value chosen is yes, then the server under consideration is a passive server in a cluster. No alerts will be generated if the server is not running. Measures will be reported as "Not applicable" by the agent if the server is not up.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Availability:

Whether the TCP connection is available

Percent

An availability problem can be caused by different factors – e.g., the server process may not be up, a network problem may exist, or there could be a configuration problem with the DNS server.

Response time:

Time taken (in seconds) by the server to respond to a request.

Secs

An increase in response time can be caused by several factors such as a server bottleneck, a configuration problem with the DNS server, a network problem, etc.