Method and apparatus for routing data packets in a global IP network
First Claim
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1. A method for routing a data packet through multiple autonomous networks, comprising:
- receiving a data packet at an ingress node of a first autonomous network;
selecting an optimal route from said ingress node of the first autonomous network to an egress node of a second autonomous network using internal routing information of the first and second autonomous networks; and
transmitting said data packet along the selected route.
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Abstract
A method and apparatus for optimally routing a data packet through multiple autonomous networks. A data packet received at an ingress node of a first autonomous network is routed to an egress node of a second autonomous network by selecting an optimal route based on the lowest latency using internal gateway protocol (IGP) routing information of the first and second autonomous networks, which is distributed to nodes of the first and second autonomous network. The data packet is then transmitted along the selected optimal route.
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Citations
20 Claims
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1. A method for routing a data packet through multiple autonomous networks, comprising:
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receiving a data packet at an ingress node of a first autonomous network; selecting an optimal route from said ingress node of the first autonomous network to an egress node of a second autonomous network using internal routing information of the first and second autonomous networks; and transmitting said data packet along the selected route. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A network router of a first autonomous network for routing a data packet to an egress node of a second autonomous network, comprising:
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an interface for receiving a data packet; a memory storing internal routing information of the first and second autonomous networks; means for selecting an optimal route through the first and second autonomous networks to the egress node of the second autonomous network using the internal routing information of the first and second autonomous networks; and means for transmitting said data packet along the selected optimal route. - View Dependent Claims (12, 13, 14)
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15. An autonomous IP network, comprising:
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at least one border router configured to distribute internal routing information of the autonomous IP network to a neighboring autonomous network and to receive internal routing information of the neighboring autonomous network from the neighboring autonomous network; and at least one edge router configured to route a data packet to a node of a neighboring autonomous network using the internal routing information of the autonomous IP network and the neighboring autonomous network. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification