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WGLC Results for draft-ietf-mip6-hiopt-02.txt

WGLC Results for draft-ietf-mip6-hiopt-02.txt. HeeJin Jang Alper Yegin JinHyeock Choi Samsung AIT Kuntal Chowdhury Starent Networks. Contents. Changes Comments & Resolutions during WGLC Ongoing Issues. Changes.

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WGLC Results for draft-ietf-mip6-hiopt-02.txt

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  1. WGLC Results for draft-ietf-mip6-hiopt-02.txt HeeJin Jang Alper Yegin JinHyeock Choi Samsung AIT Kuntal Chowdhury Starent Networks

  2. Contents • Changes • Comments & Resolutions during WGLC • Ongoing Issues

  3. Changes • Description related to DHCP (MIP6 Relay Agent option) was moved to hiopt draft from the bootstrapping-integrated draft. • We defined a sub-option in HN Information option and moved detailed fields into it for the consistency of the format with the MIP6 Relay Agent option. • New Id-type (2) is defined in HN Identifier option to indicate that MN has no preference for the requested target network.

  4. Comments & Resolutions (1/2) • MN should be able to request the target network which is not home network nor visited network. • We’ll extend the id-type 1 to support MSP which has trust roaming relationship with MN’s MSA as well as MSA (=Home MSP). • The retrieval of Multiple HA information should be supported. • It is allowed by using multiple sub-options in the HN Information option. • Additionally it will be mentioned that AAAH may return more than one HA for each of the MSPs in the bootstrapping-integrated draft. • How does the NAS/DHCP relay map a DHCP request from a specific MN to the cached HN information? • Mapping for a specific MN information in DHCP relay is not specific issue for hiopt draft but a generic issue with the RFC4014.

  5. Comments & Resolutions (2/2) • What is the conceptual data structure of the cache in the NAS/DHCP relay and any default value for caching? • It’s implementation specific details and leaves the specific value as a configuration option. • What should NAS/DHCP relay do if NAS cannot find valid HN information for MN in its cache? • In such case, the NAS/DHCP relays simply will not include the OPTION_MIP6-RELAY-Option in the Relay-Forward message. • The DHCP server will return HN Information option with the 0-length data if it does not have the corresponding information either.

  6. Ongoing Issues (1/2) • Issue #1: Support for the various types of the requested HA to specify HA service type. (0=MIPv6, 1=DS-MIPv6, 2=NEMO,...) • We will define new field for the HA service type in HN Identifier & Information options in next version. • Issue #2: How is the lifetime of HoA MN gets bootstrapped managed? Will it be refreshed by DHCP server? • HoA is assigned by stateless DHCP not by stateful DHCP and provided without lifetime.

  7. Ongoing Issues (2/2) • Issue #3: Setting both id-type to 0 (ASP) and the HN Identifier to the target MSP has no sense even for minimum transaction. If the Id-type is 0, the HN Identifier should be always 0 for clarity. • For this, we’ll revise the draft as follows • When the id-type is 0, HN Identifier is always set to 0. • When the id-type is 1, then HN Identifier is set to the target FQDN. • If MN wants to retrieve HN information from both ASP and target MSP with a single transaction, it should request with both of sub-options in a HN Identifier option.

  8. Any Questions?

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