公开(公告)号：US20230077101A1

公开(公告)日：2023-03-09

申请号：US17446965

申请日：2021-09-05

Applicant: Cisco Technology, Inc.

Inventor： Rajagopal VENKATRAMAN ,  Rajeev KUMAR ,  Roberto Mitsuo KOBO ,  Vikash AGARWAL

IPC: H04L12/26 ,  H04L12/741 ,  H04L12/751

Abstract: In one embodiment, network node-to-node connectivity verification is performed in a network including data path processing of packets within a packet switching device. In one embodiment, an echo request connectivity test packet, emulating an echo request connectivity test packet received from a first connected network node, is inserted by the packet switching device prior in its data processing path prior to ingress processing performed for packets received from the first connected network node. A correspondingly received echo reply connectivity test packet is intercepted by the packet switching device during data path egress processing performed for packets to be forwarded to the first connected network node.