Inter-network address translator that is separately addressable from address alias assignment process

• US 8,046,452 B2
• Filed: 03/05/2002
• Issued: 10/25/2011
• Est. Priority Date: 03/08/2001
• Status: Active Grant

• Current Assignee: British Telecommunications PLC (BT Group PLC)
• Original Assignee: British Telecommunications PLC (BT Group PLC)
• Inventors: King, John R, Hovell, Peter
• Primary Examiner(s): Joo; Joshua
• Application Number:
  US10/468,780
• Publication Number:
  US 20040093434A1
• Time in Patent Office: 3,521 Days
• Field of Search: 709/249, 709/201, 709245-246
• US Class Current: 709/224
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/251 between different IP versions
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/10015 Access to distributed or replicated servers, e.g. using brokers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/101 based on network conditions
• CPC Class Codes: H04L 67/1014 based on the content of a request
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Communication between a network device in a first network and a network device in a second network is provided, where the first network operates in accordance with a first communication protocol and the second network operates in accordance with a second communication protocol. An alias is assigned to a target network device in the first network, the alias being compatible with the communication protocol of the second network The assigned alias is translated to an address for a target network device, the translated address being compatible with the communication protocol of the first network. Apparatus, for assigning the alias and for translating it are separately addressable in one or both of the networks, and the assigned alias corresponds to an address of the translating apparatus, such that, when a network device in the second network sends one or more communication(s) using an address including the assigned alias, each communication is routed to the translator, whereupon the translator translates the alias into the address of the target network device in the first network and sends the communication(s) into the first network.

Claims

1. Apparatus for providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the apparatus comprising:

(i) first means for assigning an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network;

(ii) second means for translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network, said second means comprising a plurality of further devices, said further devices having respective routing identifiers such that communications are routed individually to said further devices using said respective routing identifiers; and

(iii) selecting means for selecting one of the plurality of further devices in accordance with predetermined criteria;

wherein the first means and the second means are each separately addressable in said second network, and

wherein said assigned alias corresponds to an address of the second means and includes a routing identifier of a selected one of the plurality of further devices of the second means, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communication(s) is routed to the selected further device of the second means, wherein upon the selected further device of the second means translates the alias into the address of the target network device in the first network and sends the one or more communication(s) into the first network.

2. The apparatus according to claim 1, wherein the alias comprises a network address.

3. The apparatus according to claim 2, wherein the network address includes an identifier representative of the second means.

4. The apparatus according to claim 1, wherein the predetermined criteria includes device characteristics.

5. The apparatus according to claim 4, wherein the selecting means is operable to monitor device characteristics.

6. The apparatus according to claim 4, wherein the device characteristics for the selected one of the plurality of further devices include at least one of operational status of device, loading on device or alias available to the selected device.

7. The apparatus according to claim 1, including a store for storing mappings between the assigned alias and the target network device assigned to the alias.

8. The apparatus according to claim 7, wherein the store for storing mappings is managed by a database.

9. The apparatus according to claim 1, wherein the first means and second means are each separately addressable in both said first and second networks.

10. The apparatus according to claim 1, wherein the first communication protocol and the second communication protocol are different.

11. Apparatus for providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the apparatus comprising:

(i) first means for assigning an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network;

(ii) second means for translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network,

wherein the first means and the second means are each separately addressable in said second network, and said assigned alias corresponds to an address of the second means, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communications is routed to the second means, whereupon the second means translates the alias into the address of the target network device in the first network and sends the one or more communication(s) into the first network;

wherein the alias comprises a network address;

wherein the network address includes an identifier representative of the second means;

wherein the second means comprises a plurality of further devices configured to translate an alias into an address for communication(s) with one or more target network devices; and

wherein each of the plurality of further devices has access to one or more groups of aliases used for assigning to the one or more target network devices.

12. The apparatus according to claim 11, wherein each of the one or more groups is stored in a store.

13. The apparatus according to claim 11, wherein two or more groups are stored in a store.

14. Apparatus for providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the apparatus comprising:

(i) first means for assigning an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network;

(ii) second means for translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network,

wherein the first means and the second means are each separately addressable in said second network, and said assigned alias corresponds to an address of the second means, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communication(s) is routed to the second means, whereupon the second means translates the alias into the address of the target network device in the first network and sends the one or more communication(s) into the first network;

wherein the alias comprises a network address;

wherein the network address includes an identifier representative of the second means;

wherein the second means comprises a plurality of further devices configured to translate an alias into an address for communication(s) with one or more target network devices;

wherein the apparatus includes selecting means for selecting one of the plurality of further devices in accordance with predetermined criteria; and

wherein the selecting means is in operative association with the first means.

15. Apparatus for providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the apparatus comprising:

(i) first means for assigning an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network;

(ii) second means for translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network,

wherein the first means and the second means are each separately addressable in said second network, and said assigned alias corresponds to an address of the second means, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communications is routed to the second means, whereupon the second means translates the alias into the address of the target network device in the first network and sends the one or more communication(s) into the first network;

wherein the alias comprises a network address;

wherein the network address includes an identifier representative of the second means;

wherein the second means comprises a plurality of further devices configured to translate an alias into an address for communication(s) with one or more target network devices; and

wherein the first means is operable to retrieve an alias available to at least one of said further devices, the retrieved alias being the assigned alias.

16. Apparatus for providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the apparatus comprising:

(i) first means for assigning an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network;

(ii) second means for translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network,

wherein the first means and the second means are each separately addressable in said second network, and said assigned alias corresponds to an address of the second means, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communication(s) is routed to the second means, whereupon the second means translates the alias into the address of the target network device in the first network and sends the one or more communication(s) into the first network;

wherein the alias comprises a network address;

wherein the network address includes an identifier representative of the second means;

wherein the second means comprises a plurality of further devices configured to translate an alias into an address for communication(s) with one or more target network devices;

wherein the apparatus includes a store for storing mappings between the assigned alias and the target network device assigned to the alias; and

wherein the store for storing mappings is managed by the first means.

17. Apparatus for providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the apparatus comprising:

(i) first means for assigning an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network;

(ii) second means for translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network,

wherein the first means and the second means are each separately addressable in said second network, and said assigned alias corresponds to an address of the second means, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communication(s) is routed to the second means, whereupon the second means translates the alias into the address of the target network device in the first network and sends the one or more communication(s) into the first network;

wherein the alias comprises a network address;

wherein the network address includes an identifier representative of the second means;

wherein the second means comprises a plurality of further devices configured to translate an alias into an address for communication(s) with one or more target network devices;

wherein the apparatus includes a store for storing mappings between the assigned alias and the target network device assigned to the alias; and

wherein the store for storing mappings is managed by one of said plurality of the further devices.

18. A method of providing communication between a network device in a first network and a network device in a second network, the first network operating in accordance with a first communication protocol and the second network operating in accordance with a second communication protocol, the method comprising:

assigning, by execution of a controller, an alias to a target network device in said first network, the alias being compatible with the second communication protocol of said second network,

translating said assigned alias to an address for the target network device, said translated address being compatible with the first communication protocol of said first network,

selecting one of a plurality of further devices in accordance with predetermined criteria, said further devices having respective routing identifiers such that communications are routed individually to said further devices using said respective routing identifiers,

wherein the controller and at least the selected further device are each separately addressable in said second network;

wherein said assigned alias corresponds to the selected further device and includes a routing identifier of the selected one of the plurality of further devices, such that, when a network device in the second network sends one or more communication(s) using an address comprising the assigned alias, each of the one or more communication(s) is routed to the selected further device, whereupon the selected further device translates the alias into an address of the target network device in the first network and sends the one or more communication(s) into the first network.

19. The method according to claim 18, further including:

monitoring device characteristics of each said further device, and comparing monitored device characteristics with the said predetermined criteria so as to select said one of the plurality of further devices.

20. The method according to claim 18, wherein the controller and the selected further device are each separately addressable in both of said first and second networks.

21. The method according to claim 18, wherein the first communication protocol and the second communication protocol are different.