Patent ID: 9634925
Date: 2017-04-25
CPC Classifications: H04L,H04W

Claim:
1. A method of routing one or more service tunnels in a telecommunications backhaul network including a first routing path and a second routing path, the method comprising: transmitting data of the one or more service tunnels on the first routing path; detecting a reduction in transmission capacity on the first routing path by means of a first routing path condition indicating a state of the first routing path; determining a second routing path condition indicating a state of the second routing path, in response to the detected reduction in transmission capacity on the first routing path; and deciding upon rerouting one or more of the service tunnels from the first routing path to the second routing path based on both the first routing path condition and the second routing path condition, wherein the rerouting from the first routing path to the second routing path is prevented when the rerouting would not improve one or more transmission rates for the service tunnels, the transmission rates being estimated for a performance expected after the rerouting based on both the first routing path condition and the second routing path condition; wherein at least one of the first routing path condition and the second routing path condition is determined by transmitting connectivity failure detection messages (CFDMs) on the respective routing path, wherein two or more series of connectivity failure detection messages are transmitted on one or each of the first routing path and the second routing path, wherein the connectivity failure detection messages of different series are discriminable, and wherein different modulations are associated to the connectivity failure detection messages belonging to different series.