Patent ID: 9577925
Date: 2017-02-21
CPC Classifications: H04L

Claim:
1. A method comprising: signaling, by a network router, a label switched path (LSP) in a packet-switched network according to an allocated bandwidth for the LSP, wherein the network router is a head-end label edge router for the LSP; determining, by the network router, bandwidth usage information for the LSP that indicates a volume of network packets mapped to the LSP by the network router for transport along the LSP; sending, by the network router in a notification message, the bandwidth usage information for the LSP to a path computation element that computes label switched paths for a path computation domain that includes the network router to trigger reoptimization of the path computation domain by the path computation element; receiving, by the network router from the path computation element and in response to sending the notification message, a configuration message that includes one of a route according to a layer 3 routing protocol and a filter that defines criteria for mapping subsequent network packets to the LSP; and by the network router in response to receiving the configuration message, one of (1) installing the route to a routing information base associated with the layer 3 routing protocol and advertising, to one or more other network devices, the route in a routing protocol message according to the layer 3 routing protocol to cause the one or more other network devices to divert subsequent network packets that match the route from the network router to reduce an amount of subsequent network packets received by the network router and mapped to the LSP and (2) installing the filter to forwarding information to modify the criteria for mapping the subsequent network packets to the LSP.