SDN Evolution of networks. Raul Caldeira

Transcription

1 SDN Evolution of networks Raul Caldeira

2 The networked society SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 2

3 Realizing the networked society SHIFTING USER EXPECTATIONS EVOLVING TECHNOLOGY NEW NETWORK REQUIREMENTS CHANGING BUSINESS MODELS SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 3

4 DPI TIC NAT FW DPI TIC NAT FW OSS BSS IT OSS BSS IT HSS IMS Telecom Industry Trends Purpose Built Virtualized & Converged NFV & SDN Layered Support Systems, IT Systems SDN Virtualization CTL OSS BSS IT Multi-app NFV Service Appliances SDN Control L2/L3 Router BNG GGSN PGW Convergence Forwarding SDN High Touch Packet Processing Low Touch Packet Processing Network router & gateways Yesterday Multi-Service GW Today SDN Split, NFV & cloud distribution Tomorrow SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 4

5 split architecture a key SDN innovation Current Networks Split Architectures Control plane (OS) co-located with FW plane Each vendor OS can only control that vendor s nodes NW Virtualization HW Abstraction Programmability Potential benefits Operators: Service velocity Lower OPEX due to central provisioning & management Vendors: Greater feature velocity Software business opportunities SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 6

6 SDN innovative solutions network wide transformation SDN Controll er SDN Controll er Virtual home GW Virtualization of aggregation network DPI IDS NAT NFV service connectivity and automation RESIDENTIAL MOBILE OFS OFS DC Core BUSINESS Policy-based flow steering at edge Multi-layer packet & optical transport SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 7

7 Virtual Network System - VNS Exploiting SDN virtualization: Multiple tenants on one physical substrate Exploiting split/centralization: Reducing cost to manage network SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 8

8 Virtual Network System Access & backhaul transport TCN OpenFlow IP Routing MOBILE RESIDENTIAL ENTERPRISE SSR SSR MOBILE RESIDENTIAL ENTERPRISE Virtual IP Router VNS Domain SSR SSR VNS Domain: Internal view VNS Domain: External view SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 9

9 SO WHAT ABOUT ( ) AND IT S FIBER IMPACTS SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 10

10 IP & Optical Challenges Today Distributed Mgmt Planning NMS Asynchronous Planning Un-optimised Resilience Core routers Edge routers DWDM/OTN Packet Domain (Edge) IP/MPLS (Core) Slow Service Provisioning Packet Domain (Services) Optical Core Domain Apps Media Web IP/MPLS Optical and IP networks work in different and separated planes requiring dedicated Planning, Management and Optimization activities SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 11

11 GMPLS UNI+ dynamic control Off-Line planning NMS/PCE Traffic matrix Automation of path provisioning, control of diversity GMPLS UNI+ PCEP NNI IP Optical domain IP SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 12

12 GMPLS UNI+ automated constraints exchange SRLG {a,b} SRLG {c,d,e} SRLG {a,b} IP CP Optical CP IP CP 1. Request srlg {exclude a,b} Smart UNI 2 Setup srlg {c,d,e} Smart UNI Smart UNI Smart UNI extends GMPLS to provide additional visibility to the traffic layer Exchange of SRLG control information and constraints Additional path characteristics such as end to end delay SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 13

13 IP and Optical Reference network NMS ML-PCE Planning Synergic Planning Integrated Mgmt OSS Multilayer PCE Core routers Edge routers DWDM/OTN Packet Domain (Edge) UNI++ IP/MPLS (Core) IP/MPLS processing only when needed UNI++ Independent CP Packet Domain (Services) Apps Media Web IP/MPLS Optical Core Domain A single converged transport network with seamless planning interworking signaling and recovery capabilities enabling e2e services SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 14

14 Packet + optical protection packet protection complement Packet layer protection + Tunable interface & ROADM protect Coordinating protection layers is complex Upper layer protection must be aware of underlying protection scheme and speed But relax timing causes unnecessary delays should under-layer fail to protect Integration of dynamic signaling / coordination complex across multi-layer Packet level protection + Optical restoration offers ideal mix Packet layer provides rapid and flexible protection schemes Optical layer can work uncoordinated to provide restoration of the primary path Does require strict diversity of the optical path to guarantee success SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 15

15 Analyst view infonetics continuous research WHAT ABOUT PACKET-OPTICAL? [ ] This could be the year packet-optical, specifically combined layer 0-2 equipment, re-enters the network debate in force, this time riding the coat tails of SDN. Coupling P-OTS with a SDN allows the hardware to essentially become less intelligent as the complex control plane is decoupled from the optical hardware. In essence, this lowers the barriers to entry for this technology, provided the operator is moving to a more SDN-like control plane. [ ] SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 18

16 SDN and Opto possible models SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 19

17 IP and Opto sdn Interworking via UNI+(+) E2E management NMS SDN OSS Planning Synergic planning Core routers SDN Controller Edge routers DWDM/OTN Packet Domain (Edge) UNI+(+) IP/MPLS (Core) IP/MPLS processing only when needed UNI+(+) Packet Domain (Services) Apps Media Web IP/MPLS MPLS control plane Optical Core Domain Controlled via SDN SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 20

18 Summary SDN is an emerging technology with prospect to evolve Networks Packet transport is the main area of SDN Network evolution SDN is envisioned as one major enabler of the Packet and Optical integration The Packet Optical transport integration is a continuous work of all the industry SDN - Evolution of Networks Commercial in confidence Ericsson Telecomunicações, Lda Page 22

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