Agent Network Traffic Is Missing

Symptom: In the PerformanceGuard web interface, you are not able to see any network traffic measurements from a particular PerformanceGuard agent.

Possible Causes & Solutions

• Computer Isn't Online

To check: Select ANALYZE > Computers > Computer Search, and search for the computer in question. In the search results, click the name of the computer. Then, in the Computer Info tab's Agent Info section, check the Last Delivery time, and match that with the Delivery Interval. If, for example, the agent on the computer is set to deliver data to PerformanceGuard every 180 seconds, and it hasn't done so, then the computer is in all likelihood not online.
To fix: Further troubleshooting should focus on finding out why the computer isn't online.

• WinPcap Driver Isn't Properly Initialized

To check: Select ANALYZE > Computers > Computer Search, and search for the computer in question. In the search results, click the name of the computer. Then, in the Computer Info tab's Agent Info section, check the Options. For a correctly working agent there should be a line that says Winpcap Driver OK.

To fix: If there isn't a line that says Winpcap Driver OK, try selecting the Message Log tab to see if there are any log messages that explain the problem. If not, go to the computer that has the agent installed, open a browser and connect to http://localhost:4007. Then, in the agent information window that opens, select View > Errors and check if that detailed log of the agent's activity contains any log messages that explain the problem. Further troubleshooting should be done on the computer that has the agent installed. A restart of the computer may be required.

• Aggregate Job Isn't Running

To check: Select ADMINISTRATION > Status > System Status, select the Scheduled Jobs tab, and verify that the Traffic Data Aggregation job is enabled and has the status OK.

To fix: A typical problem is that the SQL Server Agent isn't running. Select /Start, type services.msc and press ENTER. Then make sure that the SQL Server Agent service is started.

• Agent Monitors Wrong Adapter

The PerformanceGuard agent only monitors network traffic going to and from a single network adapter. Many computers have more than one adapter, so the agent will choose the same adapter that it uses to connect to PerformanceGuard.

To check: On the computer that has the agent installed, open a browser and connect to http://localhost:4007. In the agent information window that opens, select View > Adapters to view a list of available adapters on the computer. Then select View > Errors to view a detailed log of the agent's activity (including non-errors) and search the Name column for Opened adapter to verify which adapter the agent currently monitors.

To fix: If the adapter that the agent monitors isn't the one that you want the agent to monitor, you can force the agent to monitor a specific adapter. See, for example, the MonitoredNicIP agent registry key setting in the Technical Reference section of the help system. See, for example, the MonitoredNicIP agent registry key setting in the Technical Reference Manual.