Patent ID: 9667559
Date: 2017-05-30
CPC Classifications: H04L

Claim:
1. A method for tracking a re-routing history of Multi-Protocol Label Switching (“MPLS”)/Generalized MPLS (“GMPLS”) tunnels over intervals, the method comprising: measuring a number of policy-based re-routes of the MPLS/GMPLS tunnels during at least one measurement interval, wherein the policy-based re-routes comprise re-routing of the MPLS/GMPLS tunnels based on policy to optimize associated traffic engineering resources; determining a tunnel re-route frequency based on the measurement; comparing the tunnel re-route frequency to a frequency threshold; determining if the tunnel re-route frequency exceeds the frequency threshold; and delaying at least one tunnel re-route using an exponential back-off time with a duration derived as a function of a re-route dampening factor if the tunnel re-route frequency exceeds the frequency threshold avoiding tunnel flapping of the MPLS/GMPLS tunnels.