Resource determination in IP-based networks
First Claim
1. A method comprising:
- providing a topological probe functionality at a router device located in a routing area of an internet protocol based network, said topology probe functionality being provided by a topological probe function at said router device;
detecting a change of a link state at said router device, said change being detected by a detector unit at said router device;
receiving a list of router devices located in said routing area, said list being generated and transmitted by said topological probe functionality in response to the detected change; and
requesting at least one of a subset of routing tables and link capacities from said router devices indicated in said list, generated and transmitted by said topological probe functionality in response to said detected change.
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Accused Products
Abstract
The present invention relates to a method, system and router device for determining resources in an IP-based network, wherein a probe functionality is provided at a specific router device (90) located in a predetermined area (RA) of the IP-based network (50). When a link state change is detected in the specific router device (90), the probe functionality (P) forwards a list of router devices located in the predetermined area (RA) to a resource managing function which then requests at least one of a topology information and a link information from the router devices indicated in the list. Thereby, the resource information at the resource managing function can be kept updated at reduced signaling load and fast response times due to the fact that resource information is requested only from predetermined areas and at times of change.
18 Citations
18 Claims
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1. A method comprising:
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providing a topological probe functionality at a router device located in a routing area of an internet protocol based network, said topology probe functionality being provided by a topological probe function at said router device; detecting a change of a link state at said router device, said change being detected by a detector unit at said router device; receiving a list of router devices located in said routing area, said list being generated and transmitted by said topological probe functionality in response to the detected change; and requesting at least one of a subset of routing tables and link capacities from said router devices indicated in said list, generated and transmitted by said topological probe functionality in response to said detected change. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system comprising:
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a detector configured to detect a change in a link state information provided at a router device; a topological probe function configured to generate and transmit a list of router devices located in a routing area, in response to a detected change in said link state information; a receiver configured to receive said router list; and a polling unit configured to poll at least one of a subset of routing tables and link capacities from said router devices indicated in said router list. - View Dependent Claims (8, 9, 10, 11)
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12. A system comprising:
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a router device comprising a detector configured to detect a change in a link state information provided at said router device and a topological probe function configured to generate and transmit a list of router devices located in a routing area, in response to a detected change in said link state information; a resource manager comprising a receiver configured to receive said router list; and a polling unit configured to poll at least one of a subset of routing tables and link capacities from said router devices indicated in said router list.
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13. A system comprising:
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detecting means for detecting a change in a link state information provided at a router device; topological probe functionality means for generating and transmitting a list of router devices located in a routing area, in response to the detected change in said link state information; receiving means for receiving said router list; and polling means for polling at least one of a subset of routing tables and link capacities from said router devices indicated in said router list. - View Dependent Claims (14, 15, 16, 17)
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18. A system comprising:
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routing means comprising detecting means for detecting a change in a link state information provided at a router device and topological probe functionality means for generating and transmitting a list of router devices located in a routing area, in response to the detected change in said link state information; and resource managing means comprising receiving means for receiving said router list and polling means for polling at least one of a subset of routing tables and link capacities from said router devices indicated in said router list.
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Specification