PACKET-SWITCHED NETWORK TOPOLOGY TRACKING METHOD AND SYSTEM
First Claim
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1. A method of tracking the topology of a packet-switched network comprising:
- (a) passively monitoring link state advertisements flooded through the network by routers in the network participating in a link state routing protocol; and
(b) using information in the link state advertisements to construct a topology view of the network.
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Abstract
The present invention permits a network operator to maintain a timely view of changes to an operational packet-switched network.
23 Citations
11 Claims
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1. A method of tracking the topology of a packet-switched network comprising:
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(a) passively monitoring link state advertisements flooded through the network by routers in the network participating in a link state routing protocol; and
(b) using information in the link state advertisements to construct a topology view of the network. - View Dependent Claims (2, 3, 4)
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5. A system for tracking the topology of a packet-switched network comprising:
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one or more reflectors which are capable of passively monitoring link state advertisements flooded through the network by routers in the network participating in a link state routing protocol; and
an aggregator which is capable of receiving topology information from each of the reflectors and constructing a topology view of the network. - View Dependent Claims (6, 7)
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8. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to perform the steps of a method of tracking the topology of a packet-switched network, comprising:
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(a) passively monitoring link state advertisements flooded through the network by routers in the network participating in a link state routing protocol; and
(b) using information in the link state advertisements to construct a topology view of the network. - View Dependent Claims (9, 10, 11)
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Specification