Lectures notes for 2010 - KTH

How important are switches vs. routers?
There are an enormous number of switches sold per year. Probably more than one
switch port sold per wired Ethernet interface!
Cisco July 28,2007 Percentage of net product sales
Routers US$ 6,920 M 23.5%
Switches US$12,473 M 42.3%
Advanced Technologies a
Other b
US$ 8,075 M 27.4%
US$ 1,994 M 6.1%
Total
US$29,462 M
a. Video Systems, Unified Communications, Home networking, Security products, WLAN, and Storage Area networking
b. Optical networking, sales of IP-based solutions to other service providers, and Scientific-Atlanta
For comparison purposes: HP’s Corporate Investments (which includes their
Ethernet switch business) was US$566 M in 2006 - and had grown 8% over the
previous year due to gigabit switch products[10]; while in 2007 it was US$762 M
with a 33% growth attributed to enterprise class gigabit network switches! [11]
Maguire How important are switches vs. routers? 1: 58 of 104
maguire@kth.se 2010.03.21 Internetworking/Internetteknik