DHCP Based Configuration of Mobile Node from Home Network. Hui. Deng [China Mobile]
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1 DHCP Based Configuration of Mobile Node from Home Network Hui. Deng [China Mobile]
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
3 Three Scenarios Co-CoA case FA-CoA Case Home DHCP server address known
4 MIP4 Co-CoA case and sequence
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 options: option 53: DHCP Message Type = DHCPINFORM option 61: Client Identifier = mobile node's MAC address option 55: Parameter request List (Domain Name Server,... et al.)
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
7 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: op = 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) options: option 53: DHCP Message Type = DHCPACK option 61: Server Identifier = DHCP server's MAC address option 6: Domain Name Server
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
9 MIP4 FA-CoA case and sequence
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: op = BOOTREQUEST ciaddr = mobile node's home address chaddr = mobile node's MAC address options: option 53: DHCP Message Type = DHCPINFORM option 61: Client Identifier = mobile node's MAC address
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
12 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
13 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: op = 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) options: option 53: DHCP Message Type = DHCPACK
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
15 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
16 Home DHCP server address known
17 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 options: option 53: DHCP Message Type = DHCPINFORM
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) options: option 53: DHCP Message Type = DHCPACK
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
20 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: op = 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) options: option 53: DHCP Message Type = DHCPACK
21 Work item?
DHCP Based Configuration of Mobile Node from Home Network. Hui. Deng* [China Mobile] Peny Yang [Hitachi (China) R&D Corp]
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DHCP Based Configuration of Mobile Node from Home Network Hui. Deng* [China Mobile] Peny Yang [Hitachi (China) R&D Corp] Basic Considerations providing the host configuration parameters needed for network
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