公开(公告)号：US20170288947A1

公开(公告)日：2017-10-05

申请号：US15507529

申请日：2015-05-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Celestian KANIAMPADY SEBASTIAN ,  Anil RAJ ,  Vijeesh ERANKOTTE PANAYAMTHATTA ,  Prasanth GOPINATHAN NAIR SARASWATHYAMMA

IPC: H04L12/24 ,  H04L12/707

CPC classification number: H04L41/0654 ,  H04L12/6418 ,  H04L41/0663 ,  H04L45/22

Abstract: Examples disclosed herein relate to restoring a flow path in response to a link failure in a software defined network (SDN). In an example, a backup flow path for a flow may be configured in a network device, on a primary flow path of the flow. In response to determination of a link failure in the primary flow path, the network device configured with the backup flow path may be identified. In an example, the network device may be identified by sending, from a detecting network device that detects the link failure on the primary flow path, a message packet successively to each network device preceding the detecting network device on the primary flow path until the network device configured with the backup flow path is identified. The backup flow path may be used to route packets of the flow.