Charles Spurgeon is a co-author of the book “Ethernet – The Definitive Guide, 2nd Edition”
He is a Senior Technology Architect for the ITS Networking group at the University of Texas at Austin, and he has been involved in developing and managing large campus computer networks for many years.
The UT Austin network supports roughly 250,000 unique computers in a given year, and the wired network includes 153,000 wired Ethernet ports in 3,400 switches and routers. There is a large 802.11 wireless LAN (Wi-Fi) system with roughly 14,000 radios in 7,000 access points. In 2014 the wireless system supported a peak of over 44,000 concurrent users during the busy hours of the day. The UT Austin data center, based on Cisco Nexus equipment, supports thousands of servers and virtual machines.
Anyone interested in even more details can find them in the UT Austin 2012-2013 Campus Network Report at: http://www.ethermanage.com/ethernet/docs/2013-campus-network-report.pdf.