IPv6 adoption is accelerating due to growing challenges with IPv4 addresses and the increasing number of internet devices. Carrier grade NAT (CGN) solutions are being used to share public IPv4 addresses but negatively impact user experience. IPv6 deployment avoids these issues by providing each user with a unique IP address and allows the "full spectrum" internet. Global IPv6 deployment is now doubling every 9 months with some networks seeing 10-15% of users on IPv6. Full deployment is forecast within the next 5 years and will be required to support continued internet growth.
23. Internet of Things
(age of the device)
Fixed Computing
(you go to the device)
Mobility / BYOD
(the device goes with
you)
1993 2003 2013
500M
10B
Source: Cisco IBSG, 2013
IPv4 IPv4 + NAT44 IPv6 Launch
Internet of Everything
(people, process, data,
things)
50+ B
IPv6 Everywhere
2023
http://www.cisco.com/web/tomorrow-starts-here/index.html
24. IPv6 Unleashes Internet Growth
22B
BillionsofInternetDevices
2012 2014 2016 2018 202020082000 2002 2004 2006 2010
5B6
8
10
12
14
16
18
20
4
2
22
Sources: IMS Research, Intel, Ericsson, Cisco
15B
50+ B
12.5B
25B
15
25
50
Addresses in Global Routing Table
“Usable” Global IPv4 Addresses
Subtended NATs
Address+Port routing
More specific routes
Routing table growth
Shorter IP Leases
Camping on bogon space
Application Gateways
Reviving 240
Shared-SP IPv4 space
Routed IPv6 Addresses
Future Growth Challenges With IPv4
IPv4 PortsTags
4,000,000,000>
Routed IPv4 Addresses