Patent ID: 11936557
Assignee: CIENA CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method comprising:
sending an echo request in a forward direction from an initiator node to a reflector node;
receiving, at the initiator node, an echo reply from the reflector node in response to the echo request;
receiving a user selection for selecting one of the reverse SR policies; and
initiating a Seamless BFD (S-BFD) procedure by transmitting an S-BFD request including the BSID of the selected reverse SR policy from the initiator node to the reflector node along a selected forward SR policy,
wherein the echo request is sent to the reflector node to discover a reverse path in a reverse direction from the reflector node to the initiator node, and
wherein the reverse path is discovered for the purpose of initiating a Bidirectional Forwarding Detection (BFD) or Multi-Protocol Label Switching (MPLS) Ping procedure,
wherein the echo reply includes a number (M) of reverse Segment Routing (SR) policies that meet one or more path constraint parameters, and
wherein each of the M reverse SR policies includes a label stack and a Binding Segment Identifier (BSID).