Transfer device and transfer system
First Claim
1. A transfer device comprising:
- a first port connected to a layer 3 network;
a second port connected to a layer 2 network;
a storage unit that stores data processing information with which a media access control (MAC) address of a communication device in the layer 2 network and information regarding processing of data are brought into correspondence with each other, and address information with which an internet protocol (IP) address and the MAC address of the communication device in the layer 2 network are brought into correspondence with each other; and
a transfer unit that, when the transfer unit receives data addressed to the communication device in the layer 2 network through the first port, searches the address information based on an IP address included in the data to acquire a MAC address corresponding to the IP address included in the data, searches the data processing information based on the acquired MAC address, and depending on a result of the search, controls whether to transfer the data through the first port based on information regarding processing of data corresponding to the acquired MAC address,when the transfer unit receives data addressed to a communication device in the layer 3 network through the second port, the transfer unit searches the data processing information in the storage unit based on a MAC address included in the data, and depending on a result of the search, controls whether to transfer the data through the first port based on information regarding processing of data corresponding to the MAC address included in the data.
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Accused Products
Abstract
A transfer device includes: first and second ports connected to L3 and L2 networks, respectively; a storage unit that stores data processing information which brings a MAC address of a communication device in the L2 network into correspondence with information regarding processing of data, and address information which brings an IP address of the communication device in the L2 network into correspondence with the MAC address thereof; and a transfer unit that, upon receiving data addressed to the communication device in the L2 network through the first port, searches the address information with an IP address in the data to acquire a MAC address corresponding to the IP address, searches the data processing information with the acquired MAC address, and depending on a search result, controls whether to transfer the data through the first port based on information regarding processing of data corresponding to the acquired MAC address.
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Citations
12 Claims
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1. A transfer device comprising:
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a first port connected to a layer 3 network; a second port connected to a layer 2 network; a storage unit that stores data processing information with which a media access control (MAC) address of a communication device in the layer 2 network and information regarding processing of data are brought into correspondence with each other, and address information with which an internet protocol (IP) address and the MAC address of the communication device in the layer 2 network are brought into correspondence with each other; and a transfer unit that, when the transfer unit receives data addressed to the communication device in the layer 2 network through the first port, searches the address information based on an IP address included in the data to acquire a MAC address corresponding to the IP address included in the data, searches the data processing information based on the acquired MAC address, and depending on a result of the search, controls whether to transfer the data through the first port based on information regarding processing of data corresponding to the acquired MAC address, when the transfer unit receives data addressed to a communication device in the layer 3 network through the second port, the transfer unit searches the data processing information in the storage unit based on a MAC address included in the data, and depending on a result of the search, controls whether to transfer the data through the first port based on information regarding processing of data corresponding to the MAC address included in the data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A transfer device comprising:
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a first port connected to a layer 2 network; a second port connected to a layer 3 network; a first transfer unit connected to the first port; a second transfer unit connected to the second port; and a storage unit that stores destination information with which a media access control (MAC) address of a communication device in the layer 2 network and layer 3 network destination information regarding a destination of data in the layer 3 network are brought into correspondence with each other, and address information with which an internet protocol (IP) address and the MAC address of the communication device in the layer 2 network are brought into correspondence with each other, wherein when the second transfer unit receives data addressed to the communication device in the layer 2 network through the second port, the second transfer unit transfers the data to the first transfer unit, the first transfer unit searches the address information based on an IP address included in the data transferred from the second transfer unit to acquire a MAC address corresponding to the IP address included in the data, searches the destination information based on the acquired MAC address, and depending on a result of the search, executes either of transfer of the data through the first port to the communication device, or transfer of the data to the second transfer unit based on layer 3 network destination information corresponding to the acquired MAC address, when the second transfer unit receives the data based on the layer 3 network destination information from the first transfer unit, the second transfer unit transfers the data to a destination in the layer 3 network destination information through the second port, when the first transfer unit receives data addressed to a communication device in the layer 3 network through the first port, the first transfer unit searches the address information based on an IP address included in the data to acquire a MAC address corresponding to the IP address included in the data, searches the destination information based on the acquired MAC address, and depending on a result of the search, executes either of transfer of the data as first data to the second transfer unit, or transfer of the data as second data to the second transfer unit based on layer 3 network destination information corresponding to the acquired MAC address, and when the second transfer unit receives the first data from the first transfer unit, the second transfer unit transfers the first data to the communication device in the layer 3 network through the second port, and when the second transfer unit receives the second data from the first transfer unit, the second transfer unit transfers the second data to the destination through the second port.
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12. A transfer system comprising:
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a first communication device connected to a layer 2 network; a second communication device and a server connected to a layer 3 network; and a transfer device connected to between the layer 2 network and the layer 3 network, wherein the transfer device stores media access control (MAC) address-server correspondence information with which a MAC address of the first communication device and server-related information regarding the server are brought into correspondence with each other, and address information with which an internet protocol (IP) address and the MAC address of the first communication device are brought into correspondence with each other, when the transfer device receives first data addressed to the first communication device from the second communication device, the transfer device searches the address information based on an IP address included in the first data to acquire a MAC address corresponding to the IP address included in the first data, searches the MAC address-server correspondence information based on the acquired MAC address, and depending on a result of the search, controls whether to transfer the first data to the server based on server-related information corresponding to the acquired MAC address, and when the transfer device receives second data addressed to the second communication device from the first communication device, the transfer device searches the MAC address-server correspondence information based on a MAC address included in the second data, and depending on a result of the search, controls whether to transfer the second data to the server based on server-related information corresponding to the MAC address included in the second data.
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Specification