Network Virtualisation Vision and Strategy_ (based on lesson learned) Telefónica Global CTO

Transcription

1 Network Virtualisation Vision and Strategy_ (based on lesson learned) Telefónica Global CTO

2 Business development requires a continuous evolution of our network but it still seems unable to evolve fast enough Network elements are Vertically integrated Proprietary Complex to operate which has resulted in great challenges for introducing new ideas and differential features by telco operators The network is the barrier for the cloud, Nicira Networks

3 We have entered the Software-defined era: Telco evolution focus is shifting from hardware to software Big old telcos Internet players Very intensive in hardware Software is not core x Very intensive in software Hardware is a necessary support - + SOFTWARE + HARDWARE - We need to adapt to survive

4 Network Virtualisation provides a mean to make the network more flexible, taking for granted a common HW layer Network functions are fully defined by SW, minimising dependence on HW constraints DPI BRAS Firewall CG-NAT PE Router GGSN/ SGSN VIRTUAL NETWORK FUNCTIONS FUNCTION COMMON HW (Servers & Switches) CAPACITY

5 Which translates to a proper balance of NFV & SDN BNG IPv4 / IPv6 CONTROL Session mgmt TR-069 UPnP DHCP CG-NAT NAT Pool admin NAT ctrl. POOL MGMT NFV SW-defined network functions Separation of HW and SW No vertical integration - HW vendor SW vendor Mgmt vendor Once network elements are SW-based, HW can be managed as a pool of resources SDN Interconnecting Virtual Network Functions (a.k.a. backplane) Separation of control and data plane Easy orchestration with SW domain

6 CREATING THE FUTURE REQUIRES GETTING THE HANDS DIRTY YES, WE DEVELOP!

7 Residential Virtual CPE: recovering positions in the value chain Shifting network functions deployed in home environment to the network Telco Network environment Access Point Home environment Switch Módem Virtual CPE STB UPnP IPv4/IPv6 DHCP NAT FW TR-069 Simple, stable along the time and cheaper customer premises equipment Quick and transparent migration to IPv6 Service evolution and operation is supported inside telco network Monetize cloud and video services (virtual set top box) Monetize security and digital identity features Live trial today Commercial before end 2014 MATURITY LEVEL EXPLORE PoC TRIAL DEPLOY

8 SW-based DPI Probe (Deeper) Deeper RELEVANT INFO Copy RAW USER TRAFFIC RAW USER TRAFFIC MITIGATION OF Switch Metadata interface OpenFlow CENTRALISED INTELLIGENCE REAL-TIME ANALYSIS Security Alarms OF Controller Network Big Data xdrs POLICY DECISIONS Other data NFV domain SDN domain >80 Gbps line rate per server Stable signatures Flexible data analysis and signature upgrade Forensic analysis feasible. MATURITY LEVEL EXPLORE PoC TRIAL DEPLOY

9 SW CG-NAT: Low-cost high-performance NAT CG- NAT NAT44 function (translates from a private IPv4 address and port to a public IPv4 address and port, and vice-versa) Support of overlapping addresses and tunnelling Auto-provisioning of NAT sessions per access line 80 Gbps line rate switching per server MATURITY LEVEL EXPLORE PoC TRIAL DEPLOY

10 Quagga-based SW-Router Leverage on open source routing project (Quagga) as rich and widely tested protocol suite while assuring data plane performance OPEN-SOURCE CONTROL PLANE (Quagga + Linux) Common routing protocols supported and extended by open source project. Well-known router command line. OPTIMIZED DATA PLANE (DPDK-based) High-performance line-rate data plane. Running as separate process, does not lead to licensing issues. MATURITY LEVEL EXPLORE PoC TRIAL DEPLOY

11 SW BRAS: Simplified BRAS BRAS QinQ termination LPM Routing GRE tunnelling (reference for wholesale services) MPLS tunnelling 80 Gbps line rate switching per server MATURITY LEVEL EXPLORE PoC TRIAL DEPLOY

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13 1. Network Virtualisation is not Cloud Computing The network differs from the computing environment in 2 key factors: 1 2 Data plane workloads (which are huge!) Network requires shape (+ E2E interconnection) NEED OF HIGH AND PREDICTABLE PERFORMANCE (as with current equipment) GLOBAL NETWORK VIEW IS REQUIRED FOR MANAGEMENT which are big challenges for vanilla cloud computing and most of industry is offering to Telcos just IT based cloud products as network virtualization environments

14 EXECUTION EXECUTION 2. High and predictable performance is achievable (e.g. vcpe, vcg-nat, vbras ) as long as you know how! Acceptable performance 80 Gbps per COTS blade x10 GAP Bare Metal Bare Metal MANAGEMENT Bare Metal MANAGEMENT What defensive Industry says What can be achieved doing things well (*) (*) ETSI NFV Work Item NFV Performance & Portability Best Practises : DGS/NFV-PER001 Current version: v0.0.7 (stable draft 15/10/2013)

15 3. Transformation can be accelerated, co-developing in a fast lane ROADMAP ACCELLERATION Industry Exploration PoC Develop Trial & Industrialised product AVAILABLE Deployment SDOs & de facto technologies Open source & basic technologies Drive Standardise Time Months

16 4. More work is needed on closing the gaps and getting the industry focused on providing real value ADD VALUE HERE: Industry should focus on providing differential VNFs. Credible ROADMAP needed!! Legacy OSS/BSS Virtual Network Functions Orchestrator VNF Manager ADD VALUE HERE: Industry should focus on providing differential VNFs and Network Orchestration Current State of the Art is good enough (if properly arranged) OS + Hypervisor Commodity HW Commodity Switching infrastructure Virtualised Infrastructure Manager Work is needed in Open Source to AVOID proliferation of VERTICAL SOLUTIONS Network Virtualisation Infrastructure and its and Management its Management should become should become COMMODITY COMMODITY

17 This new network model will help us to deeply transform our factory Network Paradigm Change Computing principles used in IT world are beginning to be applied in telecoms by the means of Network Virtualization IP as common language for all services, included traditional Telco ones Network virtualisation enabling network reprogrammability & agile service creation Operation Model Change Global E2E vision instead traditional silo model, not linked to monolithic OSS Organization Model Change Breaking the traditional model mapping isolated network domains

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