In my previous company, we still used Alcatel, but now we are using Alcatel for the local area network, and Aruba switches for the wireless access points.

Previously, I used a solution from Oracle.

I also have experience with Ethernet switches from Aruba, HPE, and Cisco.

Actually, we are using multiple brands of switches from different vendors. It is all Cisco and Alcatel switches, but primarily Alcatel at this point. Some are the newest versions but not all and we maintain the older products. At another company, I used Cisco only because they preferred the Cisco product. So I have worked on Cisco for a longer period of time, but for 10 years I have been using both the Alcatel and Cisco switches. 

The reason for switching to Alcatel comes down to I was simply changing jobs and that was what they used.

The company used to use Extreme switches, but it was before I came onto the team, so I don't know the reason behind why they switched.