Method, system and article for advance lease negotiation in DHCP
First Claim
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1. A method for lease negotiation in DHCP in a data processing network comprising:
- receiving a reservation request from a client to be assigned an IP address at a specific time in the future;
reserving a specific IP address for the client to be assigned at the specific time requested; and
assigning the specific IP address to the client after the specified time in response to receiving an assignment request from the client for the reserved IP address.
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Accused Products
Abstract
DHCP lease negotiation is performed in advance of a specified time when the IP address is needed. The client sends a DHCP discover message with an advance lease option indicating a future time when an IP address is needed. The DHCP server reserves an IP address available at the requested time for the requesting client and sends a DHCP acknowledgment of the reservation. Thereafter, the client sends a DHCP discover message requesting the reserved IP address, and the DHCP server assigns it to the client at the scheduled time.
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Citations
24 Claims
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1. A method for lease negotiation in DHCP in a data processing network comprising:
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receiving a reservation request from a client to be assigned an IP address at a specific time in the future;
reserving a specific IP address for the client to be assigned at the specific time requested; and
assigning the specific IP address to the client after the specified time in response to receiving an assignment request from the client for the reserved IP address. - View Dependent Claims (2, 3, 4, 5, 7, 8)
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6. The method according to claim 6, wherein the step of assigning includes only assigning the specific IP address to a client receiving the DHCP-ACKNOWLEDGE message.
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9. A data processing system for lease negotiation in DHCP comprising:
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means for receiving a reservation request from a client to be assigned an IP address at a specific time in the future;
means for reserving a specific IP address for the client to be assigned at the specific time requested; and
means for assigning the specific IP address to the client after the specified time in response to receiving an assignment request from the client for the reserved IP address. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An article of manufacture comprising machine-readable medium including program logic embedded therein for lease negotiation in DHCP that causes control circuitry in a data processing system to perform the steps of:
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receiving a reservation request from a client to be assigned an IP address at a specific time in the future;
reserving a specific IP address for the client to be assigned at the specific time requested; and
assigning the specific IP address to the client after the specified time in response to receiving an assignment request from the client for the reserved IP address. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification