US6009103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for automatic allocation of resources in a network
Assignee: Comcast MO Group Inc
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Filing: 1997-12-23
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Granted: 1999-12-28
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Expires: 2017-12-23
Abstract
Abstract In a broadband cable data network, a method and system for automatically allocating network resources such as IP addresses to control access to the network utilizes at least one DHCP server, and a common network database formed from a LDAP directory for storing respective user configuration parameters, hardware address registration, and current binding information. A DHCP server can add new hardware address registrations to the LDAP using an "unregistered" service class. The DHCP server sends a DHCP reply tailored for unregistered devices, such as by allocating a privately-allocated IP address with no Internet access, or an IP address for a self-provisioning web server. A DHCP server views IP address allocation as indefinite, while a user will view an IP address allocation as having a short duration. Thus, if the IP network configuration does not change, the user terminal will continue to receive the same allocated IP address due to the DHCP server's perception of an indefinite lease. The consistency of the IP addresses simplifies many operational concerns about dynamic addresses, such as minimizing DNS (domain name service) hostname updates, mapping IP addresses to user terminals during security incidents, etc.
Inventors
- 👤 Richard Woundy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
H; H04; H04L; H04L61/00; H04L61/50; H04L61/5007; H04L61/5014; H04J; H04J3/00; H04J3/16; H04J3/1694; H04L61/45; H04L61/4505; H04L61/4511; H04L61/4523; H04L61/5053; H04L61/5076
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
In a broadband cable data network where information is distributed from at least one DHCP server to a plurality of user terminals, a method for automatically allocating network resources to control access to the network comprising: generating a discover message from a user wanting to receive allocation of a network resource; at a DHCP server, detecting user identification information from the discover message to determine whether an address entry is currently stored for the user; creating an unregistered class entry and assigning a temporary IP address to the user which allows only limited access rights to the network if an address entry does not exist; and sending an offer message which communicates the temporary IP address to allow limited access to a network user registration service.
Claim 2
Dependent Claim
126 words
In a broadband cable data network where information is distributed from at least one DHCP server to a plurality of user terminals, a method for automatically allocating network resources to control access to the network comprising: generating a discover message from a user wanting to receive allocation of a network resource; at a DHCP server, detecting user identification information from the discover message to determine whether an address entry is currently stored for the user; creating an unregistered class entry and assigning a temporary IP address to the user which allows only limited access rights to the network if an address entry does not exist; and sending an offer message which communicates the temporary IP address to allow limited access to a network user registration service.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said IP address is tagged temporarily in use.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein the IP address is temporarily assigned, and is stored as an address entry.
Claim 5
Dependent Claim
22 words
The method of claim 1 further comprising a user selecting an DHCP offer by sending a request message identifying the offering server.
Claim 6
Dependent Claim
41 words
The method of claim 4 further comprising determining whether an address entry is currently stored based on identification information received in the request message, and sending an acknowledgment message if an address entry exists indicating a temporary address has been assigned.
Claim 7
Dependent Claim
37 words
The method of claim 5 further comprising registering the user by changing the assigned IP address from a temporary, limited access IP address to a permanently in use IP address having a predetermined duration of valid use.
Claim 8
Dependent Claim
22 words
The method of claim 1 further comprising a user selecting an DHCP offer by sending a request message not identifying a server.
Claim 9
Dependent Claim
41 words
The method of claim 4 further comprising determining whether an address entry is currently stored based on identification information received in the request message, and sending an acknowledgment message if an address entry exists indicating a temporary address has been assigned.
Claim 10
Dependent Claim
30 words
The method of claim 1 further comprising determining at the user a duplicate assigned IP address, and sending a decline message to the DHCP server indicating nonacceptance of the offer.
Claim 11
Dependent Claim
23 words
The method of claim 1 further comprising sending a release message from the user to cause premature termination of the IP address assignment.
Claim 12
Dependent Claim
20 words
The method of claim 1 wherein assignment of the temporary address is automatically reset after a predetermined period of time.
Claim 13
Dependent Claim
42 words
The method of claim 1 further comprising determining a user type based on the identification information, and creating an unregistered class entry and assigning a temporary IP address only if the user type is one of an acceptable type of user device.
References Cited (Backward Citations)
US5812819A
Cited
US5835723A
Cited
US5862345A
Cited
US5872523A
Cited
US5812552A
Cited
US5790548A
Cited
US5854901A
Cited
US5875306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-27 | 2003-06-28 | 2003-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-27 | 2007-06-28 | 2007-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-27 | 2011-06-28 | 2011-12-28 | $7700.00 | Window Closed / Lapsed |