Patent ID: 11876695
Assignee: JUNIPER NETWORKS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A computer-implemented method for supporting echo or traceroute functionality in a path spanning multiple autonomous systems (ASes) having segment routing (SR) enabled, the path including an ingress node and an egress node, the computer-implemented method comprising:
a) obtaining a return label stack to reach the ingress node from either (A) the egress node, or (B) a transit node in the path, wherein the return label stack includes at least two types of labels selected from a group of label types consisting of (A) an Interior Gateway Protocol (IGP) segment identifier, (B) an IGP node segment identifier, (C) an IGP adjacency segment identifier, (D) a border gateway protocol (BGP) segment identifier, and (E) a binding segment identifier;
b) obtaining a label stack to reach, from the ingress node, either (A) the egress node, or (B) the transit node;
c) generating a request message including both (1) the label stack and (2) the return label stack; and
d) sending the request message towards either (A) the egress node, or (B) the transit node using the label stack.