System and method for establishing network connection

• US 8,594,107 B2
• Filed: 09/02/2011
• Issued: 11/26/2013
• Est. Priority Date: 03/12/1997
• Status: Expired due to Fees

• Current Assignee: Nomadix, Inc. (Nippon Telegraph and Telephone Corporation)
• Original Assignee: Nomadix, Inc. (Nippon Telegraph and Telephone Corporation)
• Inventors: Short, Joel E., Kleinrock, Leonard
• Primary Examiner(s): Mui, Gary
• Application Number:
  US13/225,059
• Publication Number:
  US 20110317693A1
• Time in Patent Office: 816 Days
• Field of Search: 370/352, 370/389, 370/392, 370/395.54, 455/455
• US Class Current: 370/401
• CPC Class Codes: H04L 41/0813 characterised by the conditions triggering a change of settings
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/10 of different types
• CPC Class Codes: H04L 61/25 of the same type
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 88/182 Network node acting on behalf of an other network entity, e.g. proxy

Abstract

Systems and methods of enabling a user host device to communicate on a network. In an embodiment, a system receives a request packet from a user host device. The request packet, such as an ARP request packet, may include a target IP address that corresponds to a static IP address that is different from any IP address associated with the system. In response to receiving the request packet, the system may send a response packet, such as an ARP response packet, with a sender address that corresponds to the static IP address, and with a sender hardware address that corresponds to a hardware address of the system.

Claims

1. A method of enabling a user host device to communicate on a network, comprising:

receiving, at a first communication system including one or more network devices, an ARP request packet transmitted from a user host device, wherein the ARP request packet includes at least a sender IP address, a sender hardware address, and a target IP address that corresponds to a static IP address of a second communication system, wherein the static IP address of the second communication system is different from any IP address associated with the first communication system;

preparing an ARP response packet that includes at least a sender IP address that corresponds to the static IP address of the second communication system, a sender hardware address that corresponds to a hardware address of the first communication system, a target IP address that corresponds to the sender IP address of the ARP request packet, and a target hardware address corresponding to the sender hardware address of the ARP request packet;

transmitting the ARP response packet from a network interface of the first communication system; and

receiving at the first communication system a network packet transmitted from the user host device and received at the first communication system, wherein the network packet comprises at least a target IP address that differs from the IP addresses of the first and second communication systems and a target hardware address that corresponds to the hardware address of the first communication system.

2. The method of claim 1, wherein the network interface comprises an Ethernet port.

3. The method of claim 1, wherein the hardware addresses are MAC addresses.

4. The method of claim 1, wherein the ARP request packet further comprises a target hardware address that corresponds to a broadcast address.

5. The method of claim 1, wherein the method performed by the first communication system further comprises:

modifying a sender address of the network packet to correspond to one of the one or more IP addresses of the first communication system, and transmitting the network packet.

6. The method of claim 1, wherein the first communication system has no information about the second communication system prior to the first communication system performing the step of receiving an ARP request packet transmitted from the user host device.

7. A connection system comprising:

a memory containing a broadcast handling function;

a processor executing the broadcast handling function; and

a network interface configured to receive an ARP request packet transmitted by a first device, wherein the ARP request packet includes at least a sender IP address, a sender hardware address, and a target IP address that does not correspond to any IP address associated with the connection system;

wherein the broadcast handling function is configured to responsively prepare and cause the transmission of an ARP response packet that includes at least a sender IP address that corresponds to the target IP address of the ARP request packet, a sender hardware address that corresponds to a hardware address of the connection system, a target IP address that corresponds to the sender IP address of the ARP request packet, and a target hardware address that corresponds to the sender hardware address of the ARP request packet; and

wherein the network interface is further configured to receive a network packet transmitted by the first device, the network packet including a target IP address that corresponds to the target IP address of the ARP request packet and a target hardware address that corresponds to the hardware address of the connection system.

8. The connection system of claim 7, wherein the ARP request packet is transmitted at least in part over a wireless network.

9. The connection system of claim 7, wherein the hardware addresses are MAC addresses.

10. The connection system of claim 7, wherein the ARP request packet further comprises a target hardware address associated with a broadcast address.

11. The connection system of claim 7, wherein the network interface is further configured to modify a sender address of the network packet to correspond to one of the one or more IP addresses of the connection system, and wherein the network interface is further configured to transmit the network packet.

12. The connection system of claim 7, wherein the target IP address is a static IP address, and the connection system has no information about the static IP address prior to the network interface receiving an ARP request packet transmitted by the first device.

13. A non-transitory computer-readable medium comprising executable instructions configured to cause one or more computer processors to perform operations comprising:

receiving, at a first communication system including one or more network devices, an ARP request packet transmitted from a user host device, wherein the ARP request packet includes at least a sender IP address, a sender hardware address, and a target IP address that corresponds to a static IP address of a second communication system, wherein the static IP address of the second communication system is different from any IP address associated with the first communication system;

preparing an ARP response packet that includes at least a sender IP address that corresponds to the static IP address of the second communication system, a sender hardware address that corresponds to a hardware address of the first communication system, a target IP address that corresponds to the sender IP address of the ARP request packet, and a target hardware address corresponding to the sender hardware address of the ARP request packet;

transmitting the ARP response packet from a network interface of the first communication system.

14. The non-transitory computer-readable medium of claim 13, wherein the ARP request packet further comprises a target hardware address that corresponds to a broadcast address.

15. The non-transitory computer-readable medium of claim 13, wherein the sender hardware address is a MAC address, and the hardware address of the first communication system is a MAC address.

16. The non-transitory computer-readable medium of claim 13, wherein the executable instructions are further configured to cause the one or more computer processors to receive a network packet transmitted from the user host device and received at the first communication system, wherein the network packet comprises at least a target IP address that differs from the IP addresses of the first and second communication systems and a target hardware address that corresponds to the hardware address of the first communication system.

17. The non-transitory computer-readable medium of claim 13, wherein the executable instructions are further configured to cause the one or more computer processors to receive a network packet transmitted from the user host device and received at the first communication system, wherein the network packet comprises at least a target IP address that corresponds to the second communication system and a target hardware address that corresponds to the hardware address of the first communication system.

18. The non-transitory computer-readable medium of claim 13, wherein the ARP request packet is received via a network that includes a wireless network.

19. The non-transitory computer-readable medium of claim 13, wherein the executable instructions are further configured to cause the first communication system to accept all packets received on the network interface.

20. The non-transitory computer-readable medium of claim 13, wherein the executable instructions are further configured to cause the first communication system to act as a Dynamic Host Configuration Protocol (DHCP) server.