Communications apparatus and network system
First Claim
1. A communication apparatus belonging to a first network which is made up of communication apparatus having addresses of a first type, respectively, and having a second network which is made up of terminals governed thereby and having addresses of a second type, respectively, said communication apparatus comprising:
- managing means for managing names given to terminals belonging to a network governed by another communication apparatus in association with a name given to the other communication apparatus; and
means responsive to the reception of a name given to a terminal with which to communicate from one of the terminals, for outputting a request for an address resolution to a corresponding communication apparatus determined by said managing means.
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Abstract
A communication apparatus allows access to be gained from a global address network to a private address network. An address converter assigns unique names (e.g., PC-B.home-a.com as an FQDN) to respective nodes (terminals A through D) belonging to the private address network and manages the nodes under the unique names. If there is an inquiry about a certain node from a certain node belonging to the global address network or another private address network, then the address converter acquires a corresponding private address (e.g., 192.168.0.2 if the inquiry is about PC-B.home-a.com) and notifies the node of the acquired private address. DNS servers for private address networks which do not belong to a tree of DNS servers on the global address network are provided in association with the respective private address networks, and are accessible from the global address network. Therefore, a name resolution for a private address can be achieved via the global address network.
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Citations
20 Claims
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1. A communication apparatus belonging to a first network which is made up of communication apparatus having addresses of a first type, respectively, and having a second network which is made up of terminals governed thereby and having addresses of a second type, respectively, said communication apparatus comprising:
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managing means for managing names given to terminals belonging to a network governed by another communication apparatus in association with a name given to the other communication apparatus; and
means responsive to the reception of a name given to a terminal with which to communicate from one of the terminals, for outputting a request for an address resolution to a corresponding communication apparatus determined by said managing means. - View Dependent Claims (2, 3, 4)
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5. A network system having a fist network which is made up of communication apparatus having addresses of a first type, respectively, and a second network which is made up of terminals governed by a communication apparatus and having addresses of a second type, respectively, said communication apparatus comprising:
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first managing means for managing addresses of terminals governed thereby in association with names given to the terminals; and
second managing means for managing the names of the terminals in association with the communication apparatus which manages the addresses of the terminals;
said second managing means comprising means, responsive to a communication request from a terminal governed thereby, for determining another communication apparatus to solve an address of a terminal with which to communicate, said first means comprising means for resolving the address in said other communication apparatus.
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- 6. A network system having a global address network having nodes with respective unique addresses, a private address network having nonunique addresses, and an address converter for converting addresses for transmitting data between the global address network and the private address network, said address converter comprising means for assigning unique names to respective nodes of said private address network and managing the unique names, and means responsive to an inquiry about a name from a node belonging to said global address network or another private address network, for acquiring and indicating a corresponding private address.
- 8. The network system having a global address network having nodes with respective unique addresses, a private address network having nonunique addresses, a first address converter for converting addresses in said global address network, and a second address converter for converting addresses between said private address network and said global address network, said first address converter and said second address converter comprising means for establishing connections independently of each other and exchanging information about the connections with each other to send and receive data between said global address network and said private address network.
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16. An address converter for converting addresses for transmitting data between a global address network having nodes with respective unique addresses and a private address network having nonunique addresses, said address converter comprising means for assigning unique names to respective nodes of said private address network and managing the unique names, and means responsive to an inquiry about a name from a node belonging to said global address network or another private address network, for acquiring and indicating a corresponding private address.
- 17. An address converter for converting addresses in a global address network, said address converter being connected to a network system having the global address network having nodes with respective unique addresses, a private address network having nonunique addresses, and another address converter for converting addresses between said global address network and said private address network, said address converter comprising means for establishing connections independently of said other address converter and exchanging information about the connections with said other address converter to send and receive data between said global address network and said private address network.
Specification