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This talk provides an overview of IPv6, focusing on its significance in the context of IPv4 address exhaustion. It discusses the available address pool, including the allocation of /8 address ranges and the current status as of May 2010. The presentation elaborates on the dual addressing scheme often used, the importance of link-local and global unicast addresses, and how IPv4 and IPv6 can coexist. It also highlights key resources for further learning, including the Federal IPv6 Transition Timeline.
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90% of this talk is stolen • I got it here • CNIT 202E, link IPv6 8
IPv4 Exhaustion • Available pool is 18 "/8 address ranges" • Each /8 has 16.8 Million Addresses • 203 already allocated • 35 Reserved for special uses • Data from 5-13-2010, CNIT 202E, link IPv6 3
IPv6 - IPv4 Addresses • A hybrid format may be used when dealing with IPv6 - IPv4 addresses where the normal IPv4 dotted decimal notation may be used after the first 6, 16 bit address elements:
Multiple Addresses • Note: Interfaces normally have two addresses, or even more • Link-local FE80::w.x.y.z • Global unicast
Example Interface MAC 00-40-63-ca-9a-20 IPv6 Interface ID (EUI-64) ::0040:63FF:FECA:9A20 or ::40:63FF:FECA:9A20 link local FE80::40:63FF:FECA:9A20
AAAA Records in DNS • iana.org and ipv6.net work too
Federal IPv6 Transition Timeline • Cisco, Sept 2009 (CNIT 202E, link IPv6 9)