H3C Technologies H3C Intelligent Management Center - Manual (Page 743)

721
The duplicate entries are data of the same device that appears in multiple custom views. To prevent
such problems, make sure each device does not appear in more than one custom view for which you
want to view the WLAN service report.
If all WSM processes are stopped on the Process tab of the Intelligent Deployment Monitoring Agent
around the hour, aggregated performance data cannot be found in the WSM database. Why?
WSM combines performance data every hour. If you stop WSM processes at that time, you interrupt
the operation. This interruption means the collected performance data can no longer be aggregated
and displayed on hourly and daily reports. HP does not recommend restarting WSM processes
around the hour.
An access failure message appears when I tried to configure an MSM series device through WSM.
What shall I do?
• Verify that the Protocol Buffer interfaces between WSM and the MSM wireless devices are
operating correctly.
• Log in to the web network management system of the device to make sure the device is
connected correctly to the WSM server.
The wireless performance statistics are inconsistent with the actual data. Why?
The wireless performance statistics include only the traffic, total number, and rates of data packets.
However, these statistics do not include those of control packets at the protocol layer or physical layer.
The history data of clients is empty. Why?
Make sure you enable the performance data collection function for clients. This function is disabled by
default. To enable the function, add content startStaPerfColl=true to file qvdm_wlan.conf in the
server/conf directory in the installation path, and then restart the imcwlan.exe process.
The interference location is the same as the location of an AP. Why?
Interferences typically appear near APs, and are roughly located the same as APs.
I cannot configure some MSM series devices in WSM. Why?
To configure MSM series devices in WSM, enable Protocol Buffer interfaces on them. If they do not
support Protocol Buffer interfaces, you cannot configure them in WSM.
The bandwidth statistics at the same hour of the last week and the last 3 days are different when I
view bandwidth statistics reports of multiple APs. Why?
In IMC, report data can be saved as raw data, hourly data, and daily data.
For an AP bandwidth statistics report, data is generated in the following ways:
• Raw data—IMC collects traffic data every 15 minutes. The raw data at a specific time is the
difference of the traffic data collected between two statistics collection operations divided by the
statistics collection interval (15 minutes).
• Hourly data—Every hour, IMC takes the maximum value of the raw data collected within the last
hour as the hourly data.
• Daily data—At 00:00 every day, IMC takes the maximum value of the hourly data collected the
last day as the daily data.
For a wireless traffic statistics report, data is generated in the following ways:
• Raw data—IMC collects traffic data every 15 minutes. The raw data is the difference between
the traffic data collected in two statistics collection periods.
• Hourly data—IMC takes the sum of the raw data collected within the last hour as the hourly data.