Method for resizing network connection in the optical transport network supporting protection switching

摘要

There is provided a method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data Unit (ODUflex(GFP)) signal. In addition, at nodes located on a protection path for protection switching, only a Link Connection Resize (LCR) protocol, except for a Bandwidth Resize (BWR) protocol, of Hitless Adjustment of ODUflex(GFP) (HAO) procedure is executed. On the other hand, both the LCR protocol and the BWR protocol are executed at nodes located on a working path for protection switching.

主权项

1. A method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data Unit (ODUflex(GFP)) signal, the method comprising:
executing, at second nodes located on a working path for protection switching, both a Link Connection Resize (LCR) protocol and a Bandwidth Resize (BWR) protocol; and executing, at first nodes located on a protection path for protection switching, only the LCR protocol and omitting the BWR protocol, of Hitless Adjustment of ODUflex(GFP) (HAO) procedure, wherein a protection-path resize command indicating only the LCR protocol, and omitting the BWR protocol, to be executed is received by the first nodes from a Network Management System (NMS) or a control plane.