A5065280778- Advanced Optical Network Technologies
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Software-Defined Networks and 5G
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Network Traffic and Congestion Control
- IoT and Edge/Fog Computing
- Energy Efficient Wireless Sensor Networks
- Advanced Fiber Optic Sensors
- Traffic control and management
- Interconnection Networks and Systems
- Advanced Data Storage Technologies
- Quantum-Dot Cellular Automata
Telecom Italia (Italy)
2012-2024
Politecnico di Milano
2016
Newport (United States)
2013
Technical University of Darmstadt
2003
Paradoxically, with an ever-increasing traffic demand, today transport-network operators experience a progressive erosion of their margins. The alarms change are set, and software define networking (SDN) is coming to the rescue promise reducing capital expenditures operational expenses. Driven by economic needs network innovation facilities, transport SDN (T-SDN) reality. It gained big momentum in last years, however, industry, will be perhaps segment embrace SDN, mainly due heterogeneous...
Optical networks have historically been designed to be operated statically. Connections are overprovisioned so that they remain uninterrupted over several (e.g., 10) years, using high physical-layer margins cover the evolution of physical conditions and modeling uncertainties. As a first step, we can increase efficiency without sacrificing network reliability by removing uncertainties reducing long-term margins, observing adjusting them at intermediate periods. This requires certain...
Use of disaggregated equipment in optical transport networks is emerging as an attractive solution to bring flexibility and break vendor lock-in dependencies. The disaggregation process requires standard protocols interfaces between the control plane network equipment. NETCONF has been selected protocol, multiple initiatives are currently working on definition models for each type data device. Different levels under evaluation, it still not clear up which level will be useful disaggregate...
Considering flexible technologies available nowadays, operating optical networks much closer to their physical capacities is very tempting but necessarily requires efficient network automation. To achieve this, the two main challenges are handling failures, and accurately predicting performance in dynamic environments. We experimentally demonstrate ability of ORCHESTRA solution for early detection localization preventively mitigate impact, thus guarantee smooth operation. Then, leveraging...
The utilization of IP over wavelength division multiplexing (IPoWDM) boxes in optical networks introduces coordination issues at the control plane level between and packet domains. Indeed, IPoWDM are technically devices, but configuration coherent pluggables requires knowledge network state information (e.g., availability). MANTRA (metaverse ready architectures for open transport) aims to define a new SDN architecture managing IPoWDM, enhancing controllers. Within MANTRA, two distinct were...
A first demonstration of ROADM White Box augmented with machine learning capabilities is demonstrated. The white box includes various level disaggregation, NETCONF/YANG control, telemetry and spectrum-based advanced monitoring functionalities.
Traditional metro networks are composed of packet switching nodes (i.e., routers) interconnected by optical transport links. In this scenario, the and domains clearly separated, using dedicated controllers. Standalone muxponders/transponders will be replaced in utilization hybrid packet–optical equipped with coherent pluggable transceivers. Thus, traditional control plane is unable to manage fully support specific parameters required configure such modules. Moreover, coordination between...
ONOS discovers and manages a topology made of Transponders dedicated OLS, using standard protocols (NETCONF/RESTCONF) models (OpenConfig/TAPI). The demo is joint collaboration, towards production deployment, between 3 operators 2 equipment vendors.
The control of Multi-domain Elastic Optical Networks (EON) is possible by combining H-PCE based computation, BGP-LS topology discovery, remote Instantiation via PCEP, and signaling RSVP-TE. This paper presents the first multi-platform demonstration that fully validates such architecture achieving multi-protocol interoperability.
This demo shows how a hierarchical control plane of ONOS SDN controllers orchestrates the dynamic provisioning end-to-end Carrier Ethernet circuits on composite network, programming whole data path from CPE to core optical equipment.
The operation of multi-domain and multi-vendor EONs can be achieved by interoperable Sliceable Bandwidth Variable Transponders, a GMPLS/BGP-LS-based control plane planning tool. This paper reports the first full demonstration validation this end-to-end architecture.
The control of multidomain elastic optical networks (EONs) is possible by combining Hierarchical Path Computation Element (H-PCE)-based computation, Border Gateway Protocol with Extensions for Traffic Engineering Link State Information (BGP-LS) topology discovery, remote instantiation via Communication (PCEP), and signaling Resource Reservation (RSVP-TE). Two evolutionary architectures are considered, one based on stateless H-PCE, PCEP instantiation, end-to-end RSVP-TE (SL-E2E), a second...
The operation of multidomain and multivendor EONs can be achieved by interoperable sliceable bandwidth variable transponders (S-BVTs), a GMPLS/BGP-LS-based control plane, planning tool. plane is extended to include the S-BVTs elastic cross connects, which combine large port-count fiber-switch (optical backplane) bandwidth-variable wavelength-selective switches, enabling end-to-end provisioning recovery network services. A multipartner testbed built demonstrate validate proposed architecture....
The introduction of intelligence for management and control optical networks the interworking different resilience capabilities in IP/multiprotocol label switching (MPLS) layers are two important issues evolution telecom next years. This paper analyzes these topics reports main results obtained European IST project LION. In particular, it describes an experimental feasibility demonstration setup/teardown soft-permanent connections with generalized MPLS signaling a managed, multivendor,...
Network slicing has been a major selling point of 5G networks, where slice is roughly defined as self-contained logical network on top shared infrastructure tailored for specific service or vertical industry, composed heterogeneous resources (computing, storage, bandwidths) and typically involving application and/or networking functions. The relationship between the underlying virtualization an open research topic, allowing multiple deployment models. In particular, model interest involves...
This work demonstrates a hierarchical control plane architecture for Software Defined Networking (SDN)-based Segment Routing (SR) in multi-domain networks. An orchestrator application, on top of multiple open source SDN controllers, creates using northbound RESTFul APIs controllers. The has control, visibility and traffic engineering capabilities to manage SR service creation. Standard southbound interfaces with proper extensions are exploited tunnels the MPLS data plane.
a hierarchical structure of SDN controllers is demonstrated to enable the configuration hybrid packet-optical nodes. The proposed workflow leverages on extension ONOS controller and T-API interface coordinate steps required by packet optical controllers.
State-of-art, potentials and limitations of the ONOS controller applied to disaggregated optical networks are reported. Focus is on on-going ODTN project. Results experimental demonstrations reported prove feasibility proposed approach.
Optical networks are evolving toward self-adaptation exploiting self-observation of network conditions (e.g., through monitoring at the physical layer). Thus, according to information, reconfiguration devices including switches and transponders transmission parameters) is acted. Typically, thought as centralized, where a central software defined networking (SDN) controller holds overall view topology resources and, upon connection request, it decides for routing spectrum assignment, then,...
A key objective of the IDEALIST project included design and implementation a GMPLS PCE-based control plane for multi-vendor multi-domain flexi-grid EON, leveraging advances in optical switching transmission technology, an enabling interoperable deployment. plane, relying on set entities, interfaces, protocols, provides automation provisioning, recovery, monitoring end-to-end connections. This article overview implemented architecture. We present macroscopic system along with core functional...
The IDEALIST (Industry-Driven Elastic and Adaptive Lambda Infrastructure for Service Transport Networks) project has designed implemented a Generalized Multi Protocol Label Switching (GMPLS) control plane flexi-grid optical Dense Wavelength Division Multiplexing (DWDM) networks, providing significant input IETF standardization. supports delegating the path computation function to dedicated Path Computation Elements (PCE), notably when justified by limitations of technology. This paper...
Operating optical networks much closer to their physical capacity is very tempting but necessarily requires improvement on the way failures are handled. In this paper, we experimentally demonstrate ability of ORCHESTRA solution for early detection and localization failures, proactively mitigate impact thus guarantee smooth operation without traffic interruption.
We present a field trial of NFV Orchestration over multi-layer packet and disaggregated optical network testbed to demonstrate crowdsourced video streaming use case. show the average service creation time is under 5 minutes, which meets KPI as defined by 5G PPP.
Transport networks provide reliable delivery of data between two end points. Today's most advanced transport are based on Wavelength Switching Optical Networks (WSON) and offer connections 10Gbps up to 100Gbps. However, a significant disadvantage WSON is the rigid bandwidth granularity because only single, large chunks can be assigned matching available fixed wavelengths resulting in considerable waste network resources. Elastic (EON) provides spectrum-efficient scalable by introducing...
We propose and implement a network virtualization architecture for open optical (partially) disaggregated networks, based on device hypervisor OpenConfig OpenROADM data models, in support of 5G slicing over interconnected NFVI-PoPs.