US 9,813,286 B2
Method for virtual local area network fail-over management, system therefor and apparatus therewith
Hsiang-Ting Fang, Keelung (TW); Yu-Wei Lee, Changhua County (TW); Tzi-Cker Chiueh, Taipei (TW); and Chih-Yu Lin, New Taipei (TW)
Assigned to Industrial Technology Research Institute, Hsinchu (TW)
Filed by Industrial Technology Research Institute, Hsinchu (TW)
Filed on Dec. 29, 2015, as Appl. No. 14/981,937.
Claims priority of application No. 104139384 A (TW), filed on Nov. 26, 2015; and application No. 2015 1 0893403 (CN), filed on Dec. 7, 2015.
Prior Publication US 2017/0155542 A1, Jun. 1, 2017
Int. Cl. H04L 12/24 (2006.01); H04L 12/46 (2006.01)
CPC H04L 41/0654 (2013.01) [H04L 12/4641 (2013.01)] 32 Claims
OG exemplary drawing
 
1. A recovery method of a virtual local area network (VLAN) for a network in a hybrid software-defined network (hybrid SDN) configuration, wherein the network at least comprises a controller and a plurality of switches, the recovery method comprising:
pre-calculating a backup path table based on the network; and
generating an event notification message according to a connection failure of the VLAN, and enabling a link failure process according to the backup path table in response to the event notification message and simultaneously performing a checking process, wherein
if a result of the checking process indicates that the connection failure is a switch failure event, a setting changed by the link failure process is recovered and a switch failure process is performed to re-establish the VLAN according to a first path corresponding to the connection failure of the VLAN in the backup path table; and
if the result of the checking process indicates that the connection failure is not the switch failure event, the link failure process re-establishes the VLAN according to a second path corresponding to the connection failure of the VLAN in the backup path table.