cPacket cClear is the application software that you use to monitor. It works with the cPacket hardware in the network.
The hardware will work with the cTaps. These are the network TAPs that the network packets will be flowing into the cPacket hardware, and then through to where cPacket cClear, where it is able to monitor all the packet that is going in and out of them.
I used cPacket cClear when I was in Vietnam but I have not had the changed to use it here in Cambodia where I am now.