SYSTEM AND METHOD FOR HANDLING ADDRESS RESOLUTION PROTOCOL REQUESTS
First Claim
1. A computing-device program product for handling address resolution protocol requests, the computing-device program product comprising code executable on an intermediary device in a local area network, the intermediary device comprising data memory for mapping Internet protocol addresses to physical layer addresses for devices in the local area network,(a) the code being operable on the intermediary device to receive a multicast address resolution protocol request having an Internet protocol address for a device on the local area network,(b) the code being further operable, on receipt of the multicast address resolution protocol request, to extract the Internet protocol address contained in the multicast address resolution protocol request,(c) the code being further operable to access the data memory in the intermediary device to obtain a physical layer address mapped to the extracted Internet protocol address if the Internet protocol address is present in the data memory, and(d) the code being further operable to forward a directed address resolution protocol request to the local area network device corresponding to the physical layer address obtained from the intermediary device data memory.
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Accused Products
Abstract
A system and method for handling address resolution protocol requests at an intermediary device in a local area network. The intermediary device has an address resolution protocol cache for mapping Internet protocol addresses to physical layer addresses for devices in the local area network. The intermediary device receives a multicast address resolution protocol request having an Internet protocol address for a device on the local area network. The address resolution protocol address contained in the multicast address resolution protocol request is extracted and the address resolution protocol cache is accessed to seek to obtain a physical layer address mapped to the extracted Internet protocol address. As a result, a directed address resolution protocol request is forwarded from the intermediary device to the local area network device corresponding to the physical layer address obtained from the intermediary device data memory.
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Citations
10 Claims
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1. A computing-device program product for handling address resolution protocol requests, the computing-device program product comprising code executable on an intermediary device in a local area network, the intermediary device comprising data memory for mapping Internet protocol addresses to physical layer addresses for devices in the local area network,
(a) the code being operable on the intermediary device to receive a multicast address resolution protocol request having an Internet protocol address for a device on the local area network, (b) the code being further operable, on receipt of the multicast address resolution protocol request, to extract the Internet protocol address contained in the multicast address resolution protocol request, (c) the code being further operable to access the data memory in the intermediary device to obtain a physical layer address mapped to the extracted Internet protocol address if the Internet protocol address is present in the data memory, and (d) the code being further operable to forward a directed address resolution protocol request to the local area network device corresponding to the physical layer address obtained from the intermediary device data memory.
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6. A computing-device implemented method for handling address resolution protocol requests, the method being implemented on an intermediary device in a local area network, the intermediary device comprising data memory for mapping Internet protocol addresses to physical layer addresses for devices in the local area network, the method comprising the following steps:
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(a) receiving a multicast address resolution protocol request having an Internet protocol address for a device on the local area network, (b) extracting the Internet protocol address contained in the multicast address resolution protocol request, (c) accessing the data memory in the intermediary device to obtain a physical layer address mapped to the extracted Internet protocol address if the Internet protocol address is present in the data memory, and (d) forwarding a directed address resolution protocol request to the local area network device corresponding to the physical layer address obtained from the intermediary device data memory. - View Dependent Claims (7, 8, 9, 10)
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Specification