We have two types of controllers in our network. One is a Cisco Wireless Controller, which is software-based, and the second one is an SD-WAN Controller, which is hardware-based.
We have installed this controller in the two buildings. One is in Lahore, and one is in Karachi. In one of them, there are around 54 wireless LANs and 54 wireless routers for 200 to 300 customers, and the other one is also serving 250 to 300 customers.
We are using its latest version. It is deployed on-premises because as per the regulations, we cannot put not any controller on the cloud for the banking infrastructure. That's why we install the controller on the site.
We have installed it for secure connectivity while roaming within the building. We have four VLANs. One is the wireless one for the most senior executives. We have a grading system in the bank. The senior vice president, the executive vice president, and the president are in one group. The second VLAN or Wi-Fi is for the assistant vice president and the vice president. The third one is for all users from OG-3 officers to OG-1. The fourth one is for any guests who walk into our building, such as vendors or workers who come into the office building.