Wideband provisioning

• US 7,835,274 B2
• Filed: 05/25/2005
• Issued: 11/16/2010
• Est. Priority Date: 05/25/2004
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Zhang, Jin, Guckel, William, Bernstein, Alon Shlomo, Zeng, Shengyou, Chapman, John T.
• Primary Examiner(s): Ryman; Daniel J
• Assistant Examiner(s): BLANTON, JOHN D
• Application Number:
  US11/138,220
• Publication Number:
  US 20060002294A1
• Time in Patent Office: 2,001 Days
• Field of Search: 370/392
• US Class Current: 370/229
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 41/0806 for initial configuration or provisioning, e.g. plug-and-play
• CPC Class Codes: H04L 41/0843 based on generic templates
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 61/59 using proxies for addressing

Abstract

A provisioning server has a port to receive a request for a network address including an indication that a remote device is wideband capable. The provisioning server also has a processor to respond to the request with a network address and include an address for a configuration file and to provide a configuration file that allows wideband service. A cable modem has a port to request a network address and indicate wideband capability. The cable modem also has a processor to receive a response to that request that includes a network address and an address for a configuration file. The processor also receives a configuration file and allows the cable modem to be configured for wideband service.

Claims

1. A method, comprising:

receiving, at a Cable Modem Termination System (CMTS), a request to assign an Internet Protocol (IP) address for a requesting device;

inserting an IP address for the CMTS into the request and relaying the request with the inserted IP address to a provisioning server;

receiving back a response from the provisioning server, wherein the response includes an assigned IP address of an address range associated with the inserted IP address of the CMTS, wherein the response includes a download address corresponding to the provisioning server for the requesting device to obtain a first Data Over Cable Service Interface Specification (DOCSIS) configuration file by download from the provisioning server;

storing the assigned IP address in a configuration table entry of the CMTS and relaying the response to the requesting device;

after relaying the response, receiving from the requesting device the first DOCSIS configuration file; and

after relaying the response, receiving from the requesting device a second different DOCSIS configuration file;

wherein the requesting device registers twice with the CMTS with each of the registrations sending a different one of said DOCSIS configuration files to the CMTS, wherein the requesting device includes narrowband circuitry and wideband circuitry, and wherein the narrowband circuitry registers with the CMTS according to the first DOCSIS configuration file and the wideband circuitry registers with the CMTS according to the second DOCSIS configuration file.

2. The method of claim 1, further comprising storing information from the second DOCSIS configuration file in the configuration table entry for the requesting device.

3. The method of claim 1, further comprising storing the second DOCSIS configuration file and associating the stored second DOCSIS configuration file with the requesting device.

4. The method of claim 1, wherein the request and the response comprise a Dynamic Host Configuration Protocol (DHCP) exchange between the provisioning server and the requesting device, and wherein the CMTS snoops the assigned IP address value from the DHCP exchange between the provisioning server and the requesting device.

5. The method of claim 1, wherein the request and the response comprise a DHCP exchange between the provisioning server and the requesting device, and wherein the CMTS at least partially controls a range of IP address values to be used by the provisioning server when selecting the IP address for the requesting device by inserting the IP address of the CMTS.

6. The method of claim 1, wherein the requesting device downloads the first DOCSIS configuration file from the provisioning server using information included in the response.

7. The method of claim 1, wherein the provisioning server processes relayed address requests from a plurality of CMTS'"'"'s including both wideband CMTS'"'"'s and narrowband CMTS'"'"'s.

8. The method of claim 7, wherein the provisioning server provides a central location for cable modems to download DOCSIS configuration files and each of the CMTS'"'"'s stores DOCSIS configuration files sent by their respective cable modems after downloading from the provisioning server.

9. A Cable Modem Termination System (CMTS) encoded with instructions that, if executed, result in:

receiving a request to assign an Internet Protocol (IP) address;

inserting an IP address for the CMTS into the request and relaying the request with the inserted IP address to a provisioning server, wherein the request includes a download address corresponding to the provisioning server for a requesting device to obtain a first Data Over Cable Service Interface Specification (DOCSIS) configuration file by download from the provisioning server;

receiving back a response from the provisioning server, wherein the response includes an assigned IP address of an address range associated with the inserted IP address of the CMTS;

storing the assigned IP address in a configuration table entry for the requesting device and relaying the response to the requesting device;

obtaining the first DOCSIS configuration file at the CMTS by snooping download of the first DOCSIS configuration file by the requesting device or by obtaining the first DOCSIS configuration file directly from the requesting device; and

after relaying the response, receiving a communication from the requesting device and obtaining, based at least in part on information from the communication, a second different DOCSIS configuration file;

wherein the requesting device registers twice with the CMTS with each of the registrations associated with a different one of said DOCSIS configuration files, wherein the requesting device includes narrowband circuitry and wideband circuitry, and wherein the narrowband circuitry registers with the CMTS according to the first DOCSIS configuration file and the wideband circuitry registers with the CMTS according to the second DOCSIS configuration file.

10. The CMTS of claim 9, wherein the instructions, if executed, result in storing information extracted from the second DOCSIS configuration file in the configuration table entry for the requesting device.

11. The CMTS of claim 9, wherein the instructions, if executed, result in storing the second DOCSIS configuration file and associating the stored second DOCSIS configuration file with the requesting device.

12. The CMTS of claim 9, wherein the request and the response comprise a Dynamic Host Configuration Protocol (DHCP) exchange between the provisioning server and the requesting device, and wherein the CMTS snoops the assigned IP address value from the DHCP exchange between the provisioning server and the requesting device.

13. The CMTS of claim 9, wherein the request and the response comprise a DHCP exchange between the provisioning server and the requesting device, and wherein the CMTS controls a range of IP address values to be used by the provisioning server when selecting the IP address for the requesting device by inserting the IP address of the CMTS.

14. An apparatus encoded with instructions that, if executed, result in:

broadcasting a request for an Internet Protocol (IP) address and receiving back, from a Cable Modem Termination System (CMTS), a response including the IP address assigned by a provisioning server;

wherein the response includes a download address corresponding to the provisioning server;

downloading a first Data Over Cable Service Interface Specification (DOCSIS) configuration file from the provisioning server using the download address; and

sending, to the CMTS, the first downloaded DOCSIS configuration file and a second different DOCSIS configuration file;

wherein the apparatus includes narrowband circuitry and wideband circuitry, and wherein the apparatus registers twice with the CMTS with the narrowband circuitry registering with the CMTS according to the first DOCSIS configuration file and the wideband circuitry registering with the CMTS according to the second DOCSIS configuration file.

15. The apparatus of claim 14, wherein the response is relayed from the CMTS and the IP address contained in the response has a value corresponding to an IP address subnet of the CMTS.

16. The apparatus of claim 14, wherein the request is a broadcast Dynamic Host Configuration Protocol (DHCP) discover and the response is a DHCP response originating from the provisioning server.

17. The apparatus of claim 16, wherein the instructions, if executed, further result in:

inspecting the DHCP response to locate the download address inserted therein by the provisioning server; and

downloading the first DOCSIS configuration file directly from the provisioning server using the Trivial File Transfer Protocol (TFTP).

18. A system, comprising:

a device configured to;

broadcast a request for an Internet Protocol (IP) address and receive back a response including the IP address assigned by a provisioning server;

wherein the response includes a download address corresponding to the provisioning server;

download a first Data Over Cable Service Interface Specification (DOCSIS) configuration file from the provisioning server using the download address contained in the response;

generate a second different DOCSIS configuration file based on the downloaded first DOCSIS configuration file; and

send to a Cable Modem Termination System (CMTS) information from the second different DOCSIS configuration file including at least one setting in the second DOCSIS configuration file different from a setting in the first DOCSIS configuration file;

wherein the device registers twice with the CMTS with each of the registrations associated with a different one of said DOCSIS configuration files, wherein the device includes narrowband circuitry and wideband circuitry, and wherein the narrowband circuitry registers with the CMTS according to the first DOCSIS configuration file and the wideband circuitry registers with the CMTS according to the second DOCSIS configuration file.

19. The system of claim 18, wherein the CMTS is configured to:

receive the request and insert therein an IP address for the CMTS before relaying the request to the provisioning server; and

snoop the assigned IP address from the response while relaying the response to the device, wherein the assigned IP address belongs to a same IP subnet as the IP address for the CMTS.

20. The system of claim 19, wherein the CMTS is configured to:

extract from a message relayed to the device the first DOCSIS configuration file; and

analyze the information sent from the device and the first DOCSIS configuration file and generate the second DOCSIS configuration file according to the analysis.