Experimental Assessment of a Resilient PCE/GMPLS Controlled Translucent Wavelength Switched Optical Network

From GMPLS to PCE/GMPLS to OpenFlow: How much benefit can we get from the technical evolution of control plane in optical networks?

“…To enable this IA-RWA computation, new GMPLS protocol extensions are required, covering both the OSPF-TE and RSVP-TE protocols. The OSPF-TE protocol extensions include the dynamic advertisement of wavelength availabilities, link/node OSNR (definitions in [5,15]), and 3R regenerator information. The dynamic dissemination of available wavelengths and link OSNR is achieved by introducing new Type-Length-Value (TLV) into type 10 opaque link state advertisement (LSA), and the dynamic dissemination of node OSNR and available 3R regenerators including their specific characteristics (e.g.…”

“…The dynamic dissemination of available wavelengths and link OSNR is achieved by introducing new Type-Length-Value (TLV) into type 10 opaque link state advertisement (LSA), and the dynamic dissemination of node OSNR and available 3R regenerators including their specific characteristics (e.g. tunable range) is implemented as a top TLV of the node [5][6][7][8][9].…”

“…A new dedicated regeneration bit (R) in a similar manner to upstream bit (U) is introduced in the ERO label sub-object. If this "R" bit is set to "1", the GC will automatically configure the use of 3R regeneration [5]. Alternatively, for more flexibility, a dedicated "regenerator" sub-object can also be used [15].…”

“…However, during the technical evolution of control plane in optical networks, an important question must be answered, that is, how much benefit can we get from such evolution? To answer this question, in this paper, we review our recent research activities [5][6][7][8][9][10][11][12][13] related to GMPLS-based, PCE/GMPLS-based, and OpenFlow-based control planes for a translucent WSON. We present the technical details, and summarize the advantages and disadvantages of these control plane techniques.…”

Distributed Sharing of Functionalities and Resources in Survivable GMPLS-Controlled WSONs

“…The works in [20] and [21] introduce a novel TLV (type/length/value) for regenerator information dissemination (e.g., availability, tunability range [21]) along with QoT-related information (i.e., node and link OSNR). In [22], the authors propose a novel object for the OSPF-TE protocol to advertise the number of available regenerators at each node, whereas in [23] the authors introduce a regenerator availability object (RAO) for RSVP-TE.…”