DHCP Based Configuration of Mobile Node from Home Network Hui. Deng - - PowerPoint PPT Presentation

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dhcp based configuration of mobile node from home network
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DHCP Based Configuration of Mobile Node from Home Network Hui. Deng - - PowerPoint PPT Presentation

Jul 13, 2023 214 likes •441 views

DHCP Based Configuration of Mobile Node from Home Network Hui. Deng [China Mobile] Basic Idea providing the host configuration parameters needed for network service from home network based on DHCPINFORM. Mobile IP specification could

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SLIDE 1

DHCP Based Configuration of Mobile Node from Home Network

  • Hui. Deng [China Mobile]
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SLIDE 2

Basic Idea

  • providing the host configuration parameters

needed for network service from home network based on DHCPINFORM.

  • Mobile IP specification could support

DHCPINFORM broadcast or unicast message straightfully without any revision.

  • Assumption：a mobile node has obtained a

network address through some other means

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SLIDE 3

Three Scenarios

  • Co-CoA case
  • FA-CoA Case
  • Home DHCP server address

known

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SLIDE 4

MIP4 Co-CoA case and sequence

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SLIDE 5

Message 1

IP fields (encapsulating header): Source Address = mobile node's home address Destination Address = home agent's address Protocol field: 4 (IP in IP) IP fields (original header): Source Address = mobile node's home address Destination Address = broadcast address UDP Src Port: bootpc(68), Dst Port: bootps(67) Bootstrap Protocol: field: ciaddr = mobile node's home address chaddr = mobile node's MAC address

  • ptions:
  • ption 53: DHCP Message Type = DHCPINFORM
  • ption 61: Client Identifier = mobile node's MAC address
  • ption 55: Parameter request List (Domain Name Server,... et al.)
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SLIDE 6

Message 2

DHCPINFORM Packet format forwarded by the home agent: IP fields: Source Address = home agent's address Destination Address = DHCP server's address UDP Src Port: bootps(67), Dst Port: bootps(67) Bootstrap Protocol: field: giaddr = home agent's address

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Message 3

IP fields: Source Address = DHCP server's address Destination Address = home agent's address (from 'giaddr' of DHCPINFORM) UDP Src Port: bootps(67), Dst Port: bootps(67) Bootstrap Protocol: field:

  • p = BOOTREPLY

xid = same as "xid" field of DHCPINFORM message ciaddr = mobile node's home address (from 'ciaddr' of DHCPINFORM) giaddr = home agent's address (from 'giaddr' of DHCPINFORM) chaddr = mobile node's MAC address (from 'chaddr' of DHCPINFORM)

  • ptions:
  • ption 53: DHCP Message Type = DHCPACK
  • ption 61: Server Identifier = DHCP server's MAC address
  • ption 6: Domain Name Server
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SLIDE 8

Message 4

DHCPACK Packet format forwarded by the home agent: IP fields (encapsulating header): Source Address = home agent's address Destination Address = mobile node's care-of-address Protocol field: 4 (IP in IP) IP fields (original header): Source Address = DHCP server's address Destination Address = mobile node's home address UDP Src Port: bootps(67), Dst Port: bootpc(68) Bootstrap Protocol

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SLIDE 9

MIP4 FA-CoA case and sequence

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SLIDE 10

Message 1

IP fields (encapsulating header): Source Address = mobile node's home address Destination Address = foreign agent's address Protocol field: 4 (IP in IP) IP fields (original header): Source Address = mobile node's home address Destination Address = broadcast address UDP Src Port: bootpc(68), Dst Port: bootps(67) Bootstrap Protocol: field:

  • p = BOOTREQUEST

ciaddr = mobile node's home address chaddr = mobile node's MAC address

  • ptions:
  • ption 53: DHCP Message Type = DHCPINFORM
  • ption 61: Client Identifier = mobile node's MAC address
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SLIDE 11

Message 2

IP fields (encapsulating header): Source Address = foreign agent's care-of-address Destination Address = home agent's address Protocol field: 4 (IP in IP) IP fields (original header): Source Address = mobile node's home address Destination Address = broadcast address UDP Src Port: bootpc(68), Dst Port: bootps(67) Bootstrap Protocol

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Message 3

IP fields: Source Address = home agent's address Destination Address = DHCP server's address UDP Src Port: bootps(67), Dst Port: bootps(67) Bootstrap Protocol: field: giaddr = home agent's address

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Message 4

IP fields: Source Address = DHCP server's address Destination Address = home agent's address (from 'giaddr' of DHCPINFORM) UDP Src Port: bootps(67), Dst Port: bootps(67) Bootstrap Protocol: field:

  • p = BOOTREPLY

xid = same as "xid" field of DHCPINFORM message ciaddr = mobile node's home address (from 'ciaddr' of DHCPINFORM) giaddr = home agent's address (from 'giaddr' of DHCPINFORM) chaddr = mobile node's MAC address (from 'chaddr' of DHCPINFORM)

  • ptions:
  • ption 53: DHCP Message Type = DHCPACK
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SLIDE 14

Message 5

IP fields (encapsulating header): Source Address = home agent's address Destination Address = foreign agent's care-of-address Protocol field: 4 (IP in IP) IP fields (original header): Source Address = DHCP server's address Destination Address = mobile node's home address UDP Src Port: bootps(67), Dst Port: bootpc(68) Bootstrap Protocol

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Message 4

IP fields (encapsulating header): Source Address = foreign agent's address Destination Address = mobile node's home address Protocol field: 4 (IP in IP) IP fields (original header): Source Address = DHCP server's address Destination Address = mobile node's home address UDP Src Port: bootps(67), Dst Port: bootpc(68) Bootstrap Protocol

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Home DHCP server address known

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Message 1

IP fields: Source Address = mobile node's home address Destination Address = DHCP server's address UDP Src Port: bootpc(68), Dst Port: bootps(67) Bootstrap Protocol: field: ciaddr = mobile node's home address chaddr = mobile node's MAC address

  • ptions:
  • ption 53: DHCP Message Type = DHCPINFORM
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SLIDE 18

Message 2

IP fields: Source Address = DHCP server's address Destination Address = mobile node's home address (from 'ciaddr' of DHCPINFORM) UDP Src Port: bootps(67), Dst Port: bootpc(68) Bootstrap Protocol: field: ciaddr = mobile node's home address (from 'ciaddr' of DHCPINFORM) chaddr = mobile node's MAC address (from 'chaddr' of DHCPINFORM)

  • ptions:
  • ption 53: DHCP Message Type = DHCPACK
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SLIDE 19

Message 3

IP fields: Source Address = home agent's address Destination Address = DHCP server's address UDP Src Port: bootps(67), Dst Port: bootps(67) Bootstrap Protocol: field: giaddr = home agent's address

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Message 4

IP fields: Source Address = DHCP server's address Destination Address = home agent's address (from 'giaddr' of DHCPINFORM) UDP Src Port: bootps(67), Dst Port: bootps(67) Bootstrap Protocol: field:

  • p = BOOTREPLY

xid = same as "xid" field of DHCPINFORM message ciaddr = mobile node's home address (from 'ciaddr' of DHCPINFORM) giaddr = home agent's address (from 'giaddr' of DHCPINFORM) chaddr = mobile node's MAC address (from 'chaddr' of DHCPINFORM)

  • ptions:
  • ption 53: DHCP Message Type = DHCPACK
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SLIDE 21
  • Work item?