Automatic address setter capable of determining a network address of a host station
First Claim
1. An automatic network address setting circuit included in a host station connected to a local area network to allocate said automatic network address setting circuit'"'"'s own network address to said host station, said automatic setting circuit comprising:
- routing information reception means for receiving a routing information signal transmitted through said local area network;
memory means for memorizing said routing information signal received through said routing information reception means;
extracting means for extracting an unused address with reference to contents of said routing information signal stored in said memory means to determine said unused address as an extracted address;
confirming means for confirming whether or not another host station assigned with said extracted address is present; and
determining means for determining the own network address on the basis of a result of said confirmation.
3 Assignments
0 Petitions
Accused Products
Abstract
In a method of determining an assigned network address of a host station connected to a local area network, a predetermined routing information signal, such as an RIP packet, which is periodically received by the host station is monitored to detect an unused network address in the local area network. On detection of the unused network address, a request signal is transmitted to the local area network with the unused network address attached to the request signal to monitor presence or absence of a response signal to the request signal and to determine the assigned network address of the host station when the response signal is absent.
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Citations
9 Claims
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1. An automatic network address setting circuit included in a host station connected to a local area network to allocate said automatic network address setting circuit'"'"'s own network address to said host station, said automatic setting circuit comprising:
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routing information reception means for receiving a routing information signal transmitted through said local area network; memory means for memorizing said routing information signal received through said routing information reception means; extracting means for extracting an unused address with reference to contents of said routing information signal stored in said memory means to determine said unused address as an extracted address; confirming means for confirming whether or not another host station assigned with said extracted address is present; and determining means for determining the own network address on the basis of a result of said confirmation. - View Dependent Claims (2, 3, 4)
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5. A method of determining an assigned network address of a host station connected to a local area network, said method comprising the steps of:
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monitoring a predetermined routing information signal which is periodically sent through said local area network and which carries routing information of said local area network; selecting an unused network address on the basis of the predetermined routing information signal received; and deciding said assigned network address on the basis of said unused network address; wherein said deciding step comprises the steps of; transmitting a preselected request signal which carries said unused network address; and confirming whether or not a preselected response signal is received by said host station in response to said preselected request signal to determine said unused network address as said assigned network address on no reception of said preselected response signal.
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6. A method of determining an assigned network address of a host station connected to a local area network, said method comprising the steps of:
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monitoring a predetermined routing information signal which is periodically sent through said local area network and which carries routing information of said local area network; selecting an unused network address on the basis of the predetermined routing information signal received; and deciding said assigned network address on the basis of said unused network address; wherein said monitoring step comprises the steps of; receiving said predetermined routing information signal; formulating a routing table on the basis of said routing information carried by said predetermined routing information signal; and supervising said routing information in said routing table.
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7. A method of determining an assigned network address of a host station connected to a local area network, said method comprising the steps of:
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monitoring a predetermined routing information signal which is periodically sent through said local area network and which carries routing information of said local area network; selecting an unused network address on the basis of the predetermined routing information signal received; and deciding said assigned network address on the basis of said unused network address wherein said selecting step comprises the steps of; formulating an address table on the basis of said predetermined routing information signal to specify each network address previously assigned; and extracting said unused network address on the basis of said address table.
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8. A method of determining an assigned network address of a host station connected to a local area network, said method comprising the steps of:
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monitoring a predetermined routing information signal which is periodically sent through said local area network and which carries routing information of said local area network; formulating an address table on the basis of said predetermined routing information signal to-specify each network address previously assigned; selecting two of unused network addresses with reference to said address table; transmitting a preselected request signal which carries two of said unused network addresses one of which is included as a sender network address and the other of which is included as a target network address; and confirming whether or not a preselected response signal is received by said host station in response to said preselected request signal to determine said unused network address as said assigned network address on no reception of said preselected response signal. - View Dependent Claims (9)
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Specification