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IPv6 and Roaming PaDIRT Meeting, San Francisco November 29, 2006

IPv6 and Roaming PaDIRT Meeting, San Francisco November 29, 2006. IPv6 Overview. IPv4 is the ubiquitous IP protocol IPv5 is an experimental protocol IPv6 is a new iteration of the protocol IPv6 benefits: Expanded address space Improved Security (mandatory IPSec)

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IPv6 and Roaming PaDIRT Meeting, San Francisco November 29, 2006

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  1. IPv6 and Roaming PaDIRT Meeting, San Francisco November 29, 2006

  2. IPv6 Overview • IPv4 is the ubiquitous IP protocol • IPv5 is an experimental protocol • IPv6 is a new iteration of the protocol • IPv6 benefits: • Expanded address space • Improved Security (mandatory IPSec) • Potentially faster routing • IPv6 important for MMD

  3. IPv4 Addressing Challenges • IPv4 address space is 32 bits: 127.34.3.14 (8 octets) • IPv4 address space yields ~4.3 billion addresses • IPv4 address space inefficiently allocated • We depend heavily on private addresses to meet our needs • Some operators are running out of public addresses

  4. IPv6 Addressing • IPv6 provides a 128 bit address space • 2^128 = A really, really big number • Because IPv6 addresses are so large, hexadecimal is used to express them • Big, scary IPv6 address: • 2001:0db8:85a3:08d3:1319:8a2e:0370:7334 • IPv6 addresses can be assigned in interesting ways, e.g. auto configuration (prefix + interface ID)

  5. IPv6 assignment for CDMA2000 • Assigned by PDSN • PDSN/MS use IPv6CP (instead of IPCP) • PDSN provides unique 64 bit prefix and a 64 bit interface ID (IID) • MS can use any IID (2^64 different addresses) • Assigned IID is used for CoA for Mobile IPv6

  6. IPv6 and CDMA2000 • 3GPP2 standardizes use of IPv6 and Mobile IPv6 for CDMA2000 • No known commercial deployments yet (?)

  7. Mobile IPv6 for CMDA2000 • IID assigned by PDSN is the CoA • The MS is its own FA (no FA on PDSN) • HA provisioned in handset or delivered to PDSN as a AAA attribute (delivered to MS via DHCP) • Enhancements to Mobile IPv6 allow assignment in the visited network (delivered via DHCP)

  8. IPv6 and CDMA2000 • Covered and standards (IS-835) • Important for MMD roaming

  9. Transport of IPv6 • Unrealistic that all networks would support IPv6 • There is technology used to carry IPv6 over IPv4, e.g. 6to4 tunnels • Consensus on technology used will be important

  10. IPv6 roaming issues • In order to support IPv6 roaming, we need: • PDSN support of IPv6CP • No FA function needed • IPv6 related AAA attributes • Visited operator application server (rare) • Useful to converge on a single transport method

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