System and method for network address maintenance using dynamic host configuration protocol messages in a data-over-cable system
First Claim
1. In a data-over-cable system, a method for network address maintenance, comprising the steps of:
- receiving a message on a second network device, wherein the message contains a first network address associated with a first network device, and wherein the message is used to acknowledge the first network address on the data-over-cable system; and
determining whether the first network address equates to a second network address stored in a network address table associated with the second network device, and if so, deleting from the network address table one or more network addresses associated with the second network address; and
storing in the network address table a third network address.
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Accused Products
Abstract
A method for network address maintenance in a data-over-cable system. The method includes receiving a message containing a first network address, such as an Internet Protocol address, to be stored in a network address table, such as an Address Resolution Protocol table. If the first network address equates to a second network address stored in the network address table, one or more network addresses associated with the second network address are deleted from the network address table. A third network address is then stored in the network address table. The method provides for the removal of stale network addresses, freeing memory space and increasing security in the data-over-cable system.
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Citations
28 Claims
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1. In a data-over-cable system, a method for network address maintenance, comprising the steps of:
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receiving a message on a second network device, wherein the message contains a first network address associated with a first network device, and wherein the message is used to acknowledge the first network address on the data-over-cable system; and
determining whether the first network address equates to a second network address stored in a network address table associated with the second network device, and if so, deleting from the network address table one or more network addresses associated with the second network address; and
storing in the network address table a third network address. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
deleting from the network address table the second network address; and
storing the first network address in the network address table.
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17. In a data-over-cable system, a method for network address maintenance, comprising the steps of:
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receiving a message on a cable modem termination system, wherein the message contains a first Internet Protocol address associated with a cable modem; and
determining whether the first Internet Protocol address equates to a second Internet Protocol address stored in a network address table associated with the cable modem termination system, and if so, deleting from the table one or more network addresses associated with the second Internet Protocol address, and storing a Medium Access Control address in the network address table. - View Dependent Claims (18, 19, 20)
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21. In a data-over-cable system, a method of network address maintenance, comprising the steps of:
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receiving a message on a cable modem termination system, wherein the message contains a first Internet Protocol address associated with customer premise equipment; and
determining whether the first Internet Protocol address equates to a second Internet Protocol address stored in a network address table associated with the cable modem termination system, and if so, deleting from the table one or more network addresses associated with the second Internet Protocol address, and storing a Medium Access Control address in the network address table. - View Dependent Claims (22, 23, 24)
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25. In a data-over-cable svstem, a method of network address maintenance, comprising the steps of:
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receiving a message on a cable modem. wherein the message contains a first Internet Protocol address associated with customer premise equipment; and
determining whether the first Internet Protocol address equates to a second Internet Protocol address stored in a network address table associated with the cable modem, and if so, deleting from the table one or more network addresses associated with the second Internet Protocol address, and storing a Medium Access Control address in the network address table. - View Dependent Claims (26, 27, 28)
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Specification