Earlier this year Microsoft and Aruba Networks jointly announced the two companies will work to replace Microsoft's existing Cisco wireless network with Aruba's centrally-managed infrastructure, which eliminates the need for individual changes on the access points.

Aruba Networks was selected to provide the networking equipment for what is considered to be one of the world's largest next-generation wireless LANs, serving more than 25,000 simultaneous users a day in some 60 countries. According to an Aruba press statement, Microsoft's new WLAN will be deployed in 277 buildings covering more than 17 million square feet using Aruba mobility controllers, mobility software and some 5000 wireless access points.

What the press statement didn't mention is that Aruba mobility controllers run the Linux operating system which Microsoft has aggressively targeted as being inferior to Windows as part of its "Get the Facts" marketing campaign.

Mark Robards, Aruba Network's Asia-Pacific vice president, said the company's mobility controller switches provide integrated security, including a firewall, VPN, and hardware encryption, and they are "all Linux-based".

Robards said the network rollout with Microsoft is going well and is likely to take two years to complete and will contain as many as 7000 access points. Indeed, Aruba is recruiting Linux developers to work on its mobility controller software. In an advertisement on the company's Web site, Aruba is seeking a senior Linux software engineer with "expert knowledge of Linux and extensive Linux kernel experience".