Citations:Cisco


 * 2004 David Barnes, Basir Sakandar "Cisco LAN Switching Fundamentals"
 * "Many of the newest Cisco switching platforms are discussed here in detail"
 * 2005 James Boney "Cisco IOS in a Nutshell"
 * "virtually all of Cisco's products run the Internetwork Operating System (IOS)"
 * 2012 Chris Porter "Email Security with Cisco IronPort"
 * "The Cisco IronPort Email Security Appliances (ESA) have been deployed in thousands of networks ..."