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DHCP Option for Home Information Discovery in MIPv6

This draft proposes using DHCPv6 to deliver MIPv6 home information in the access network. It introduces new options for home network identifier and information, extending beyond home subnet prefix and HA address. The proposed procedures involve dynamic HA discovery, home registration, and DNS resolution for efficient delivery of essential network details.

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DHCP Option for Home Information Discovery in MIPv6

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  1. DHCP Option for Home Information Discovery in MIPv6(draft-jang-mip6-hiopt-00.txt) HeeJin Jang Alper Yegin JinHyeock Choi Samsung AIT Kuntal Chowdhury Starent Networks

  2. Introduction • Key idea • To provide MIPv6 home information through DHCPv6 in the access network • Updated from draft-jang-dhc-haopt-02.txt • Changes • Extended to include not only home subnet prefix and HA address but also home address of MN based on WG feedbacks and WiMAX=m spd. • Specific vendor option for MIPv4 already exists. • RFC2132 (DHCP Options and BOOTP Vendor Extensions) : Option 68 for HA info.

  3. New DHCPv6 Option (1/3) • Introduce two options to for delivery of home network information in visited network • Home Network Identifier (HNId) option • Home Network Information (HNInf) option

  4. New DHCPv6 Option (2/3) • Home Network Identifier (HNId) option • Option-code : OPTION_HNId (TBD) • id-type 0 Local (visited) domain • Network realm • ‘A’ flag A flag to specify whether the client requests a home address or not.

  5. New DHCPv6 Option (3/3) • Home Network Information (HNInf) option • Option-code : OPTION_HNInf (TBD) • info-type 0 Home subnet prefix 1 HA’s complete IPv6 address • HA’s FQDN • IPv6 Home address There can be multiple information

  6. Proposed Procedure (1) Visited network Home network DHCP server • Dynamic HA discovery • HoA is preconfigured Get home subnet prefix HAs • Home registration MN

  7. Proposed Procedure (2) Visited network Home network DNS server DHCP server • DNS resolution • Get HoA & HA’s FQDN HAs • Home registration MN

  8. Proposed Procedure (3) Visited network DHCP server • Get HoA & HA address directly HAs • Home registration MN

  9. Specific Operation Visited network • Search the proper corresponding info. based on HNId *@ kt.co.kr – a::b *@ samsung.com - c::d *@ sk.co.kr - e::f DHCPserver Home network • 1. Send DHCPv6 information-request msg. • DHCP option request option • HNId option with ‘A’=1 • [samsung.com] • 3. Send DHCPv6 reply for CoA • HNInf option with HA address [c::d] & HoA HAs c::d • Home Registration MN

  10. Applications • In integrated bootstrapping scenarios • draft-ietf-mip6-bootstrapping-integrated-dhc-01.txt • Stage-3 CSN Anchored Mobility in WiMAX • 060215-CSN-Anchored-MM-stage-3 • MIP6 enhancement in 3GPP2 • X31-20060522-021

  11. Conclusion • DHCP is an efficient and convenient way to provide home network information since • Widely deployed networks in real networks • Allows an MN to discover not only IP addresses but also various the capabilities & configuration parameters through stateless DHCP • This draft does not suggest bootstrapping solution but delivery mechanism of home network parameters in the access network. • This proposal can be applied for other use such as local HA(MAP) discovery • We hope this proposal is adopted as a WG document.

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