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1. (WO2018128889) DETECTING AND MITIGATING LOOPS

Pub. No.:    WO/2018/128889    International Application No.:    PCT/US2017/068523
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: H04L 12/705
Applicants: CISCO TECHNOLOGY, INC.
Inventors: KRATTINGER, Lukas
THORIA, Samir
PANDEY, Manoj, Kumar
Title: DETECTING AND MITIGATING LOOPS
Abstract:
Access-side loop mitigation may be provided. First, a first edge device may determine that a duplicate host exists on a network. Then the first edge device may detect a loop in response to determining that the duplicate host exists on the network. Detecting the loop may comprise sending a message on a plurality of access-side ports of the first edge device and then receiving, in response to sending the message on the plurality of access-side ports of the first edge device, a response on a first access-side port of the plurality of access-side ports of the first edge device. Next, the first edge device may mitigate the detected loop in response to receiving the response.