Patent ID: 9705589
Date: 2017-07-11
CPC Classifications: H04B,H04J,H04L,H04Q

Claim:
1. A method of resizing in an optical transport network a protected connection being represented by a lower order optical data unit of flexible size, said protected connection comprises at least one active path and at least one protection path together forming a protection group, said method of resizing being carried out using a resize protocol comprising a link connection resize protocol part and a bandwidth resize protocol part, said method comprising: carrying out said link connection resize protocol part to resize links along said at least one active path and at least one protection path; carrying out said bandwidth resize protocol part to resize a capacity of said lower order optical data unit of flexible size, wherein said bandwidth resize protocol part is triggered for both said active path and said protection path; transmitting confirmation signals indicating success or failure of resizing said links along said at least one active path and said at least one protection path, respectively, to a connection function terminating said protection group; and at said connection function, logically combining said confirmation signals transmitted along said at least one active path and said at least one protection path.