Brocade Communications Systems produces data center switches .
The company 's product portfolio spans across NAS/SAN directors and switches , data center switches , Ethernet fabrics , SDN , Network virtualization , Federal , ISP and enterprise Ethernet ( LAN/WLAN ) switches and WAN ( Internet ) Routers , Application Delivery Controllers ( load balancers ) , Network Security Appliances , Fibre Channel host bus adapters ( HBAs ) and Converged Network Adapters ( CNAs ) , and Ethernet transceivers .