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 (ODUflex(GFP)) signal. In addition, Hitless Adjustment of ODUflex(GFP) (HAO) procedure includes Suppress Bandwidth Resize (SBR) information that prevents a Bandwidth Resize (BWR) protocol from being initiated. Based on the SBR information, only the LCR protocol is executed at nodes located on a protection path for protection switching, except for the BWR protocol. On the other hand, both the LCR protocol and the BWR protocol are executed at nodes located on a working path.

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,
wherein a Link Connection Resize (LCR) protocol of Hitless Adjustment of ODUflex(GFP) (HAO) procedure comprises Suppress Bandwidth Resize (SBR) information that prevents a Bandwidth Resize (BWR) protocol from being initiated, the method comprising: executing, at second nodes located on a working path W for protection switching, both a LCR protocol and a BWR protocol; executing, at first nodes located on a protection path P for protection switching, only the LCR protocol and omitting the BWR protocol, wherein the SBR information is contained in LCR protocol overhead.