PATH COMPUTATION APPARATUS AND PATH COMPUTATION METHOD FOR THE SAME
First Claim
1. A path computation apparatus comprising:
- a database to store information including an ID of a domain, an ID of the path computation apparatus, and an IP address of a communication apparatus;
a database management unit to store the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus in the database, and to create an extended message including the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus; and
a location advertisement transmission/reception unit to transmit the extended message.
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Accused Products
Abstract
Provided is a path computation apparatus capable of computing a path over a plurality of domain, and a path computation method for the path computation apparatus.
The path computation apparatus includes a database to store information including an ID of a domain, an ID of the path computation apparatus, and an IP address of a communication apparatus; a database management unit to store the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus in the database, and to create an extended message including the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus; and a location advertisement transmission/reception unit to transmit the extended message.
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Citations
14 Claims
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1. A path computation apparatus comprising:
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a database to store information including an ID of a domain, an ID of the path computation apparatus, and an IP address of a communication apparatus; a database management unit to store the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus in the database, and to create an extended message including the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus; and a location advertisement transmission/reception unit to transmit the extended message. - View Dependent Claims (2, 3, 4)
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5. A communication system comprising:
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at least two domains to which a plurality of communication apparatuses are connected; and at least two path computation apparatuses connected to the at least two domains, respectively, to compute a path between the plurality of communication apparatuses, wherein each path computation apparatus comprises a database to store information including an ID of a corresponding domain, an ID of the path computation apparatus, and an IP address of a communication apparatus; a database management unit to store the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus in the database, and to create an extended message including the information including the ID of the domain, the ID of the path computation apparatus, and the IP address of the communication apparatus; and a location advertisement transmission/reception unit to transmit the extended message. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A path computation method comprising:
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receiving, in a network including a first domain and a second domain, a request for establishing a path from a first communication apparatus belonging to the first domain to a second communication apparatus belonging to the second domain; identifying, when receiving the request for establishing the path, a second path computation apparatus connected to the second domain, and requesting the second path computation apparatus to compute a path of communication apparatuses in the second domain; receiving information regarding the path of the communication apparatuses in the second domain, from the second path computation apparatus; and reflecting the information about the path of the communication apparatuses in the second domain to detect a path of communication apparatuses in the first domain, thus establishing the path from the first communication apparatus to the second communication apparatus. - View Dependent Claims (12, 13, 14)
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Specification