The Autoconfiguration of Recursive DNS Server
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Jae-Hoon Jeong , Jung-Soo Park, Kyeong-Jin Lee, Hyoung-Jun Kim ETRI 18 th March 2003 PowerPoint PPT Presentation


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The Autoconfiguration of Recursive DNS Server and the Optimization of DNS Name Resolution in Hierarchical Mobile IPv6. draft-jeong-hmipv6-dns-optimization-00.txt. Jae-Hoon Jeong , Jung-Soo Park, Kyeong-Jin Lee, Hyoung-Jun Kim ETRI 18 th March 2003

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Jae-Hoon Jeong , Jung-Soo Park, Kyeong-Jin Lee, Hyoung-Jun Kim ETRI 18 th March 2003

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The Autoconfiguration of Recursive DNS Server and the Optimization of DNS Name Resolution in Hierarchical Mobile IPv6

draft-jeong-hmipv6-dns-optimization-00.txt

Jae-Hoon Jeong, Jung-Soo Park, Kyeong-Jin Lee, Hyoung-Jun Kim

ETRI18th March 2003

56th IETF – San Francisco, California, [email protected]

IETF56 DNSOP WG


Motivation of the draft

  • The current DNS name resolution depends on fixed recursive DNS server(s) preconfigured in the node if we don’t use DHCPv6.

    • But, this is not suitable in the mobile IPv6 environment.

      • In the respect of DNS name resolution time.

  • What solutions are there to save DNS name resolution time?

    • This draft suggests one of the possible solutions.

IETF56 DNSOP WG


Idea of the draft

  • Autoconfiguration of recursive DNS server (RDNSS)

    • Through RA-based DNS discovery, a mobile node can configure the address of recursive DNS server(s) placed in the visited network statelessly.

  • Optimization of DNS name resolution

    • It is possible by using the local recursive DNS server placed in the visited network instead of that placed in the home network.

  • The scope of this draft

    • Hierarchical Mobile IPv6 Network

      • But the idea of this draft can be applied to mobile IPv6 network or normal IPv6 network.

IETF56 DNSOP WG


RDNSS1

Current DNS service scenario (1/2)

DNS Server

(DNSS)

Web Server(WS)

RDNSS : Recursive DNS Server

3

Internet

Home Agent(HA)

Mobility Anchor Point(MAP)

2

5

1

RDNSS2

4

MN

Home Network

Foreign Network

IETF56 DNSOP WG


RDNSS1

Current DNS service scenario (2/2): Dog-legged DNS name resolution

DNS Server

(DNSS)

Web Server(WS)

RDNSS : Recursive DNS Server

3

Internet

Home Agent(HA)

Mobility Anchor Point(MAP)

2

5

4

RDNSS2

1

MN

Home Network

Foreign Network

IETF56 DNSOP WG


RDNSS1

Suggested DNS service scenario : Optimization of DNS name resolution

DNS Server

(DNSS)

Web Server(WS)

RDNSS : Recursive DNS Server

3

Internet

Home Agent(HA)

Mobility Anchor Point(MAP)

5

2

1

RDNSS2

4

MN

Home Network

Foreign Network

IETF56 DNSOP WG


Next steps

  • The next step of the draft

    • Add solicited DNS discovery

      • Through RS message that solicits the address of recursive DNS server placed in the visited network.

    • Consideration of extension to mobile IPv6

  • Is this draft valuable to discuss as dnsop wg draft?

IETF56 DNSOP WG


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