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Posts about SDN (Software Defined Networking)

The application of cloud native design principles to network functions virtualization

NFV (Network Functions Virtualization) White papers SDN (Software Defined Networking) cloud native

Network Functions Virtualization is at the heart of the most fundamental transformation ever undertaken by the communications services industry, with profound impacts on technology planning, network engineering, operations and procurement.   And despite the enormous upheaval that NFV brings to their business, virtually every network operator in the world today accepts its vital importance to their future, and many have already made great progress in their transformation to a software-centric future.

The approach to NFV taken by the majority of network operators appears to be driven mainly from a bottom-up, technology-oriented perspective.  This narrative starts with the observation that most network functions can be provided by software running on commercial off-the-shelf server hardware at considerably lower cost than traditional proprietary purpose-built hardware.  The modern way to deploy software is with virtualization, and for virtualization at scale we need a cloud environment.  If we are deploying software in a cloud environment, then we can automate operations, and save ourselves a ton of operational expense.  

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ACG white paper: SDN and NFV - The Missing "Organizational Readiness Plan"

NFV (Network Functions Virtualization) White papers SDN (Software Defined Networking)

The telecom industry is facing its biggest disruption. The move to SDN, NFV and virtualization is revolutionary, yet indispensable for any telecom operator. However, the current industry discussions have mainly focused on the technology, with little or no dialogue on the operational side.

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What is Path Computation Element (PCE)?

Networking software SDN (Software Defined Networking) PCE (Path Computational Element) MPLS (Multi-Protocol Label Switching)

Path Computation Element (PCE) is a device that computes paths on behalf of the nodes in the network. It can be a router, a COTS server, part of the OSS, or a virtualized entity running in a cloud. When a network node needs a path for an LSP, it makes a request to the PCE using the PCE protocol (PCEP). The PCE has access to topology information for the entire network and uses this in path computations.

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Huawei Path Computational Element (PCE) for E2E Multidomain Networking case study

Cloud Case studies Networking software SDN (Software Defined Networking) PCE (Path Computational Element) Layer 3 MPLS (Multi-Protocol Label Switching) Huawei

Huawei’s selection of DC-PCE protocol software from Metaswitch was an expansion of the existing 10-year old relationship between the two companies. Over that time Huawei has turned to Metaswitch for a full suite of control plane technology, including IP routing, MPLS and GMPLS software. Metaswitch has extended its control plane solutions with DC-PCE, with full integration of the routing and GMPLS software. Huawei selected Metaswitch for its PCE solution due to the pre-integration and Huawei’s familiarity with Metaswitch’s high quality and exceptional support.

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"Intelligent aggregation" white paper

Cloud White papers SDN (Software Defined Networking) Layer 3

Changes in the traffic patterns in large carrier networks have challenged design rules and accompanying economics and planning rules. By assessing these shifts in traffic patterns, and optimizing the architecture for the new reality, the operational complexity of the network(s) can be reduced, and CAPEX spend that can be reduced by up to 75% over existing approaches.

This use case will look at traffic that transits through a single exchange or PoP of a carrier’s network, but does not traverse the carrier’s backbone. This traffic pattern can be referred to as intra–exchange transit traffic.

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"A guide to NFV and SDN" white paper

NFV (Network Functions Virtualization) Cloud White papers SDN (Software Defined Networking)

This paper is intended to help network operators understand the key technologies that support this transformation in networking, namely Network Functions Virtualization (NFV) and Software-­‐Defined Networking (SDN); to assess how these technologies could be applied in their networks; and to identify the kinds of benefits that could flow from embracing them.

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