Network router that routes internetwork packets between distinct networks coupled to the same physical interface using the physical interface
First Claim
Patent Images
1. A router comprising:
- a port for coupling to a multiplexing fabric that carries internetwork traffic for a plurality of distinct networks, the multiplexing fabric providing a plurality of distinct communication channels for each of the plurality of distinct networks; and
a routing engine configured to determine a best route to route the internetwork traffic between the plurality of distinct networks.
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Abstract
A network router that routes internetwork packets between distinct networks coupled to the same physical interface. The router comprises a port for coupling to a multiplexing fabric that carries internetwork traffic for a plurality of distinct networks and a routing engine that routes internetwork traffic between the plurality of networks using the port. According to various embodiments, the multiplexing fabric may be a switched fabric or a shared media fabric. The multiplexing fabric may also be used to connect networks that operate according to different protocols to the same port.
49 Citations
16 Claims
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1. A router comprising:
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a port for coupling to a multiplexing fabric that carries internetwork traffic for a plurality of distinct networks, the multiplexing fabric providing a plurality of distinct communication channels for each of the plurality of distinct networks; and a routing engine configured to determine a best route to route the internetwork traffic between the plurality of distinct networks. - View Dependent Claims (2, 3)
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4. A networking arrangement comprising:
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a plurality of distinct networks; a multiplexing fabric coupled to the plurality of distinct networks for carrying internetwork traffic for the plurality of distinct networks, the multiplexing fabric providing a plurality of distinct communication channels for each of the plurality of distinct networks; and a router having a port configured to transmit and receive internetwork packets comprising the internetwork traffic via the plurality of distinct communication channels for each of the plurality of distinct networks from the multiplexing fabric. - View Dependent Claims (5, 6)
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7. A router comprising:
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a physical interface for coupling to a single transmission line that carries internetwork traffic for a plurality of distinct networks in a multiplexed manner, the single transmission line providing access to a plurality of distinct communication channels for each of the plurality of distinct networks; and a routing engine that receives and transmits network traffic between a plurality of logical networks using the physical interface and is configured to determine a best route for the network traffic. - View Dependent Claims (8, 9)
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10. A networking arrangement comprising:
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a plurality of distinct networks; a multiplexing fabric coupled to the plurality of distinct networks for carrying internetwork traffic for the plurality of distinct networks, the multiplexing fabric providing a plurality of distinct communication channels for each of the plurality of distinct networks; and a router having a physical interface configured to transmit and receive internetwork packets comprising the internetwork traffic via the plurality of distinct communication channels for each of the plurality of distinct networks from the multiplexing fabric by a transmission line. - View Dependent Claims (11, 12)
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13. A method for transferring data between a plurality of distinct networks comprising:
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receiving an internetwork packet from a first network via a first physical interface of a router, the internetwork packet being destined for a second network; and routing the internetwork packet via a second physical interface of the router if a best route to the second network includes the second physical interface;
otherwiserouting the internetwork packet via the first physical interface of the router when the best route to the second network includes the first physical interface, the first and second physical interfaces providing access to distinct communication channels for each of the first and second networks.
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14. A router comprising:
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a physical interface that operates according to an Asynchronous Transfer Mode (ATM) protocol for coupling to an ATM link, a plurality of virtual channels being defined in the ATM link, the physical interface providing access to a plurality of distinct communication channels for each of a plurality of distinct networks; and a routing engine coupled to the physical interface, the routing engine being operative to route packets received from a first virtual channel of the ATM link to a second virtual channel of the ATM link according to a best route determined by the router.
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15. A router comprising:
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a port for coupling to a multiplexing fabric that carries internetwork traffic for a plurality of distinct networks that operate according to different network protocols, the multiplexing fabric providing a plurality of distinct communication channels for each of the plurality of distinct networks; and a routing engine that routes internetwork traffic received from the port according to a best route. - View Dependent Claims (16)
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Specification