IPv6

IPv6 is a new IP protocol designed to replace IPv4, the Internet protocol that is predominantly deployed and extensively used throughout the world. IPv6 quadruples the number of network address bits from 32 bits (in IPv4) to 128 bits or approximately 3.4 x 10³⁸ addressable nodes, which provides more than enough globally unique IP addresses for every network device on the planet.

Cisco initially announced its three-phase IPv6 roadmap in June 2000, and has since introduced support across a wide range of Cisco solutions. Cisco IOS Software release deliver a wide spectrum of IPv6 features.