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US 8,510,419 B2Granted
Identifying a subnet address range from DNS information
AssigneeHewlett-Packard Development Company, L.P.
InventorsLloyd E Wright, Lyn T. Robertson
Life of this patent
Estimating the term…
Abstract
Embodiments of identifying a subnet address range from DNS information are disclosed.
Claims7
A system comprising:
- a network device;
- and
- a configuration unit configured to cause Domain Name System (DNS) information to be received from a DNS name server that identifies a subnet address range that includes a first IP address and configured to configure the network device using the subnet address range,
- wherein the configuration unit is configured to provide a first DNS query to the DNS name server to cause at least a first part of the DNS information to be received from the DNS name server,
- wherein the first DNS query includes a second IP address that is derived from the first IP address, and wherein the first part of the DNS information identifies a first boundary address of the subnet address range, and
- wherein the configuration unit is configured to provide a second DNS query to the DNS name server to cause at least a second part of the DNS information to be received from the DNS name server, wherein the second DNS query includes a name derived from the first part of the DNS information, and wherein the second part of the DNS information identifies a second boundary address of the subnet address range.
3 more elements
A system comprising:
- a network device;
- and
- a configuration unit configured to cause Domain Name System (DNS) information to be received from a DNS name server that identifies a subnet address range that includes a first IP address and configured to configure the network device using the subnet address range,
- wherein the configuration unit is configured to provide a series of DNS queries, each DNS query including a different possible boundary address of the subnet address range, to the DNS name server until the DNS information corresponding to at least one of the series of DNS queries identifies a first boundary address of the subnet address range, and
- wherein the configuration unit is configured to provide an additional DNS query to the DNS name server to identify a second IP address of the subnet address range.
2 more elements
A method comprising:
- providing, from a configuration unit, a plurality of DNS queries to a DNS name server;
- configuring, via the configuration unit, a network device with a subnet address range identified from DNS information received in response to the plurality of DNS queries;
- deriving a default gateway IP address from the subnet address range;
- and
- configuring the network device with the default gateway IP address,
- wherein a first one of the plurality of DNS queries requests a PTR resource record corresponding to a first IP address that is derived from a second IP address that is assigned to the network device,
- wherein the DNS information received in response to the first one of the plurality of DNS queries includes a first name that identifies a first boundary address of the subnet address range,
- wherein a second one of the plurality of DNS queries requests an A resource record corresponding to a second name that is derived from the first name, and
- wherein the DNS information received in response to the second one of the plurality of DNS queries includes a second boundary address of the subnet address range.
6 more elements
A system comprising:
- A processor;
- and
- A non-transitory storage medium storing a program executable by the processor to:
- identify a subnet address range of a network device from DNS information received in response to a plurality of DNS queries;
- configure the network device with the subnet address range;
- derive a default gateway IP address from the subnet address range;
- and
- configure the network device with the default gateway IP address,
- wherein at least a first one of the plurality of DNS queries includes a first IP address that is derived from a second IP address assigned to the network device;
- and
- wherein at least a second one of the plurality of DNS queries includes a first name that is derived from a first part of the DNS information corresponding to the first one of the plurality of DNS queries.
8 more elements
A system comprising:
- A processor;
- and
- a non-transitory storage medium storing a program executable by the processor to:
- identify a subnet address range of a network device from DNS information received in response to a plurality of DNS queries;
- and
- configure the network device with the subnet address range;
- wherein at least a first one of the plurality of DNS queries includes a first IP address that is derived from a second IP address assigned to the network device:
- and
- wherein a first boundary of the subnet address range is determined from the first part of the DNS information corresponding to the first one of the plurality of DNS queries, and wherein a second boundary of the subnet address range is determined from a second part of the DNS information corresponding to the second one of the plurality of DNS queries.
6 more elements
Dependencies are inferred from the claim text.