PACKET SWITCHING SYSTEM, PACKET SWITCHING METHOD, ROUTING APPARATUS, STRUCTURE OF PACKET, AND PACKET GENERATING METHOD
First Claim
1. A packet switching system for transmitting and receiving a packet via a packet switching network that is configured by interconnecting a plurality of routing apparatuses, comprising:
- a plurality of routing tables stored in the respective routing apparatuses, each of the routing tables being generated by a unique routing policy;
an identifier inserted in the packet, configured to specify the routing tables; and
an identifier changer configured to change a value of the identifier within the packet switching network, wherein the routing apparatus is configured, to select a routing table in accordance with the value of the identifier inserted in the packet received, and to transfer the packet to a destination that is specified by the selected routing table.
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Accused Products
Abstract
The packet switching system for transmitting and receiving a packet via a packet switching network 100, which comprises a plurality of routing tables (#0, #1, #2 . . . ), each of which has been generated by a unique routing policy, stored in the routing apparatuses deployed at the border, at the origin or at the end of the respective routing domains, an identifier (RTI) inserted in the packet to specify the routing tables, and an identifier changer to change a value of the identifier on the packet switching network 100. The routing apparatus selects one of the routing tables (#0, #1, #2 . . . ) according to the RTI in the received packet and transfers the packet to a destination that is specified by the selected routing table.
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Citations
24 Claims
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1. A packet switching system for transmitting and receiving a packet via a packet switching network that is configured by interconnecting a plurality of routing apparatuses, comprising:
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a plurality of routing tables stored in the respective routing apparatuses, each of the routing tables being generated by a unique routing policy;
an identifier inserted in the packet, configured to specify the routing tables; and
an identifier changer configured to change a value of the identifier within the packet switching network, wherein the routing apparatus is configured, to select a routing table in accordance with the value of the identifier inserted in the packet received, and to transfer the packet to a destination that is specified by the selected routing table. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A packet switching method for transmitting and receiving a packet via a packet switching network that is configured by interconnecting a plurality of routing apparatuses comprising the steps of:
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(1) storing a plurality of routing tables, each of which has been generated by a unique routing policy, in the routing apparatuses;
(2) inserting an identifier in the packet to specify a routing table;
(3) transferring the packet to a destination that is specified by the routing table selected in accordance with a value of the identifier inserted in the packet that is received at the routing apparatus; and
(4) changing the value of the identifier within the packet switching network. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A routing apparatus for configuring a packet switching network for transmitting and receiving a packet comprising:
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a storing unit configured to store a plurality of routing tables, each of which has been generated by a unique routing policy;
a routing table searcher configured to select a routing table in accordance with a value of an identifier inserted in the packet for specifying a routing table;
a transferor configured to transfer the packet to a destination that is specified by the selected routing table; and
a identifier changer configured to change the value of the identifier. - View Dependent Claims (14, 15, 16)
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17. A packet generating method for generating a packet that is transmitted and received on a packet switching network configured by interconnecting a plurality of routing apparatuses comprising the steps of:
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(1) storing a plurality of routing tables, each of which has been generated by a unique routing policy, in the routing apparatuses; and
(2) inserting an identifier, which is able to be changed on the packet switching network, in the received packet to specify a routing table. - View Dependent Claims (18, 19, 20)
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- 21. A structure of packet transmitted and received on a packet switching network configured by interconnecting a plurality of routing apparatuses comprising an identifier, to specify a plurality of routing tables stored in the routing apparatuses, each of which has been generated by a unique routing policy, and is able to be changed on the packet switching network.
Specification