公开(公告)号：US20230327972A1

公开(公告)日：2023-10-12

申请号：US18334947

申请日：2023-06-14

Applicant: Cisco Technology, Inc.

Inventor： Rajagopal Venkatraman ,  Rajeev Kumar ,  Roberto Mitsuo Kobo ,  Vikash Agarwal

IPC: H04L43/12 ,  H04L45/02 ,  H04L45/74

CPC classification number: H04L43/12 ,  H04L45/02 ,  H04L45/74

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.

公开(公告)号：US20210075728A1

公开(公告)日：2021-03-11

申请号：US16567324

申请日：2019-09-11

Applicant: Cisco Technology, Inc.

Inventor： Atri Indiresan ,  Roberto Mitsuo Kobo ,  Sanjay Kumar Hooda ,  Anton Smirnov

IPC: H04L12/803 ,  H04L12/931 ,  H04L12/939 ,  H04L29/12

Abstract: In one embodiment, a method comprises receiving traffic to send from a router to a host in the fabric edge network, wherein the fabric edge network comprises a plurality of switches and an inter-switch link (ISL); and sending the traffic from the router to the host via at least one of the switches based on the downlink connectivity of the host. Sending the traffic from the router to the host is performed without sending the traffic through the ISL. Sending the traffic from the router to the host comprises sending the traffic through the ISL when there is a link failure on a path between the router and the host.