Network Slicing and Splicing

Network slicing is the embodiment of the concept of running multiple logical networks on a common physical infrastructure.  In that context, a network slice is an isolated and virtualised network that provides service differentiation to meet end-user SLAs in an efficient and economical way. NetOS’ orchestration features deliver this within a single network domain (e.g. defining VLANs within an Enterprise Local Area Network).

Network splicing extends the concept of Zeetta’s topology aggregation across different administrative network domains. This can be viewed as complementary concept to that of network slicing that enables the “stitching together” of two or more network slices to create a continuous logical network extending across different domains that delivers services with guaranteed performance.

Multi-domain Orchestrator

Zeetta’s NetSplicer is a Multi-Domain Orchestrator (MDO) that uses network slicing and network splicing to provide automated control across multiple network technologies and across different layers in the network stack.

It combines NetOS’ orchestration features with topology aggregation across multiple network domains to enable service orchestration across the entire network.

NetSplicer enables the end-to-end provisioning of services across network operators or different administrative parts of the same operator.

NetSplicer features

Patented IPR

Patented IPR to efficiently slice optical spectrum in an optical network.

WDM or modern flexi-WDM network transport

Supports classical WDM or modern flexi-WDM network transport technologies.

Guarantees isolation and performance

Guarantees isolation and performance of the network slices under different operational and traffic conditions.

Automates control of Layer 2/Layer 3 over Optical transport

Automates control of Layer 2/Layer 3 over Optical transport to provide flexible connectivity (slices) with respect to parameters such as latency and bandwidth. This is the foundation for novel placement strategies as without flexible connectivity between different placement points effective function dis-aggregation cannot be achieved.

Enables recursive composition of network slices

Enables recursive composition of network slices and delegation of control of network slices. i.e. a network slice to be controlled by its tenant controller.

Works with any SDN controller or network control plane

Can work with any SDN controller or network control plane; it is agnostic to the network control plane type and vendor.

Supports end-to-end network slice composition

Supports end-to-end network slice composition, on demand and in real-time, minimizing any interruption of service, including network slice upscaling and downscaling.

Acts and an MVNO enabler

Acts and an MVNO enabler: This builds upon all of the above to implement slices that also contain virtualized network functions (VNFs) placed at specific locations (as required by the slice definition and function requirements), including RAN network requirements aware tactics and orchestration.

NetSplicer Unique Technologies

Optical Layer Virtualisation

Zeetta’s IPR in optical domain enable its NetSplicer™ to offer virtualisation at layer 0 and layer 1 while optimizing bandwidth at physical transport layer.

Cross Technology Layer Optimisation of Virtual Networks

NetSplicer™ is able to splice, network slices across multiple network domains as well across multiple technology layers.

On-Demand and Hitless Cross-Layer Virtualisation

With NetSplicer™ cross layer virtualization, virtual networks can be re-planned on demand and without interruption of services.

Tenant Control and Management of Virtual Networks

NetSplicer™enables a tenant to create a complex virtual network topology including edge and core nodes and fully control it, while ensuring that the integrity of the underlay network is maintained.

In-service, Real-time and Hitless Network Optimisation

This is enabled by NetSplicer™’s unique network optimization tactics.

Recursive Network Virtualisation

NetSplicer™ allows big virtual operators to further virtualise their own virtual infrastructure (recursive virtualization) and offer it as services to smaller/regional virtual operators.

Intelligent Network-Aware VNF Placement

NetSplicer™ technology can create network slices that are optimised for the bandwidth, jitter and latency requirements of NFVs, it can also cooperate with existing NFV placement orchestrators by enabling compute placement decisions within those network connectivity constraints.

Vendor Agnostic

Vendor Agnostic and supported by Open Standards.

NetSplicer Architecture

New services & use cases enabled by NetSplicer

  • Pay-as-you-go optical network slice service (over Dark Fibre)
  • User-controlled optical network slice (full control of traffic engineering /routing control over slice)
  • URLLC services (IMT-2020 5G Requirements) for different verticals that require isolation at the lowest possible layer to meet strict latency and reliability guarantees
  • Orchestrated network slicing over optical and Layer 2 (Ethernet) enables new services that combine the best of optical (isolation, low latency and reliability) with the best of Layer 2 (wide support, multiplexing and extensive use as a building block for higher level services):
  • Provision of self-healing and self-adjustable network slices. Adaptive network slices can be created that re-plan or adjust their configuration automatically to adapt to variations applications and traffic demands, for example by changing layer1-3 or optical resources and parameters.
  • Network-aware NFV orchestration. The NetSplicer® can take into account the network connectivity requirements (e.g. bandwidth and latency) and make NFV placement choices within those constraints. This maximises the ability to meet demanding and stringent KPIs for the user and control planes of virtualised network services.
  • 5G-VRAN Slicing. Low-latency and high-bandwidth virtual network service orchestration for function placement service for different verticals (e.g. RAN networks, Transport, Utilities etc.) that builds upon the flexibility offered via multi-layer/multi-technology slices

Problems addressed by NetSplicer

Problems Solved and BenefitsDelayed
Reduced Time
to Market
Improved fibre spectrum utilization from existing and new infrastructure enabling longer time periods between investment in equipment.check box
Improved management and utilization of resources while supporting new service rollout – acts as a force multiplier for existing teams to manage increasingly complex services.check box
Automated provisioning of the optical layer as part of the orchestration of the entire service end to end, previously the optical transport has been provisioned/configured separately and resulted in long lead times typically of several weeks.check box
Each transport layer is currently planned and optimized separately with little collaboration between the different layers. The NetSplicer® solution offers: • Significant reduction of lead times for new services • Accelerated Service fulfilment times • Reduction of effort in troubleshooting/recovery from failure check boxcheck box
When combined with Carrier Ethernet to provide multi-technology orchestration and slicing, the additional effort required to coordinate between Layer 2 and Layer 3 services can be reduced or removed all together.check box
Real-time composition and re-planning of a network slice minimising interruption of service, both on-demand or to support self-healing.check boxcheck box
Improved fault correlation between the multiple domains in the network layer to the end service. This makes it easier to monitor the layers as a single network and to see potential problems that can have knock-on effects. For example, a fibre cut can impact Layer 2 and Layer 3 services and it is difficult to identify the root causecheck box
Enabling closed loop Service Assurance. Once the problems are identified, the NetSplicer® and its Slicing Engine can remap the dependent services over different fibres resulting in minimum service disruption. Existing solutions have limited visibility outside their domain and can lead to service restoration times stretching from several minutes to several hourscheck boxcheck box
As the demand for 5G services grows NetSplicer®’s automated intelligent placement of disaggregated network functions combined with flexible network slicing will reduce OpEx by removing redundant capacity and reduce CapEx by maximising the efficient use of existing infrastructure and assets. (E.g. by reacting to “tidal flow” effects in resource usage in real time).check boxcheck boxcheck box
The disaggregation of monolithic network functions into virtual deployments allows for new services to be composed of existing and/or new network functions. The NetSplicer® enables these to be deployed rapidly as compared to widescale hardware upgrade cycles that were previously a prerequisite for new service rollout.check boxcheck boxcheck box