I re-logged into the machine and found that they are not in place still. I surprised and made relogin again, this time they mapped. Finally after applying multiple tests like this, I came to a conclusion that, I have below two problems…
1) Drive mapping is not happening at every attempt 2) Background processing of drive mapping is not working"
"The Managed Switch Port Mapping tool is designed to communicate with a managed ethernet switch using SNMPv1/v2c and map the physical port connections to MAC and IP addresses of the attached devices. The software is designed for use on Microsoft Windows® operating systems."
"Ekahau HeatMapper is a free software tool for quick and easy coverage mapping of Wi-Fi (802.11) networks. It's the only free, easy-to-use tool that shows, on a map, the wireless network coverage in your home or small office. HeatMapper also locates all access points."
In addition to the free software, paid laptop and portable versions are available, with and without wireless cards and other hardware.