Achieving Complete Control Plane Recovery in Optical User Network Interface
27 November 2006
A new control plane recovery mechanism for optical User Network Interface is proposed to support ingress nodal failure in this paper. Since the current standard of IETF and OIF only provides mechanisms to recover transit and egress nodal failure, an ingress nodal recovery isn¡¯t supported. By introducing an upstream RecoveryPath message into nodal fault recovery, the proposed mechanism can be applied to ingress nodes recovery to achieve a complete control plane recovery. A detailed analysis of signal flow has been made and the total recovery time is obtained. It shows that the recovery time is reduced by using the proposed signaling flow mechanism. Moreover, the proposed mechanism provides better interoperability between IETF and OIF standard.