Software defined networking

Transcription

1 Software defined networking Telecom Summit 2015 Anton Turygin IP Networks and Services solution architect

2 Programmable Networks Drivers Network Evolution Agility Communication Services New Revenue Streams Service Enablement Cost Efficiency Enterprise Services Fixed Network Functions Manage Complexity Customer Premises Equipment Mobile Network Functions Telecom Summit 2015 Public Ericsson AB Page 2

3 Software Defined Networking Service Exposure SW SDN Controller (SW) Orchestrated Network and Cloud Management HW SW Integrated Network Control SW HW HW HW HW HW 3G/LTE WiFi WAN Router Edge Data Center Traditional Switch/Router Software Defined Networking End-to-end network programmability with SDN SDN enables service providers to build programmable and agile networks Telecom Summit 2015 Public Ericsson AB Page 3

4 SDN ambitions service provider expectations Telecom Summit 2015 Public Ericsson AB Page 4

5 Network Layers Expected to Benefit the Most From SDN Telecom Summit 2015 Public Ericsson AB Page 5

6 Scott Shenker it s time for SDN V2 Scott Shenker, one of the minds behind the creation of SDN, has some misgivings about the technology. It s time for SDNv2! Why is this different? Because Shenker and others started out assuming the network was homogeneous. The differences between core and edge switches the existence of MPLS, essentially wasn t taken into account. This one is unforgivable. We just ignored current systems, Shenker said. One of the secrets, when you teach networking, [is that] nobody covers MPLS. Telecom Summit 2015 Public Ericsson AB Page 6

7 Telecom Summit 2015 Public Ericsson AB Page 7

8 Sdn is about programmability, not sb protocols Telecom Summit 2015 Public Ericsson AB Page 8

9 NETCONF/YANG NETCONF A transport protocol Designed to transport YANG encoded network entity information YANG A modeling language Designed to model network entity information NETCONF/YANG standardization & definition work being done through the IETF: NETCONF WG RTGWG for routing (non protocols) Protocol relevant WG for protocols(ospf/isis/etc) Telecom Summit 2015 Public Ericsson AB Page 9

10 What is OpenConfig? What is OpenConfig? Informal working group of large network operators (including carriers, cable operators, and online service providers). Cross section of a large set of use cases, experiences, and pain points. What is the primary goal of OpenConfig? Enable dynamic and programmable network infrastructure for the industry at large. What will OpenConfig contribute? Models Documentation & Tooling Other openconfig efforts (so far, many more to come): BGP model draft-shaikh-idr-bgp-model Policy model draft-shaikh-rtgwg-policy-model MPLS / TE Model for SP Networks draft-openconfig-mpls-consolidated-model Telecom Summit 2015 Public Ericsson AB Page 10

11 Openconfig key ideas Telecom Summit 2015 Public Ericsson AB Page 11

12 Openconfig is kickin $$ Telecom Summit 2015 Public Ericsson AB Page 12

13 SDN for Transport with multi layer wan controller MLWC Optimizer MLWC- Activator MLWC-Planner MLWC Apps Service Orchestration and Management Service Aware Policy Controller Multilayer WAN Controller ML-PCE Cloud Network Controller Optical CLI PCEP Segment Routing & Netconf Broadband Service Controller OF Ericsson SDN Controller Router 6000 Router 6000 Telecom Summit 2015 Public Ericsson AB Page 13 Access & Metro Core

14 MLWC & Segment routing MLWC Centralized Multilayer control Global view for optimal operations Segment Routing Backward compatibility with installed base Simple operations Automated Single point configuration Traffic Engineering Telecom Summit 2015 Public Ericsson AB Page 14

15 segment routing Tackling issues reported by operators for years: Simpler to operate, more scalable explicit routing Simple to deploy and operate Source Routing Path encoded as a label or stack of segments Simple extensions to ISIS/OSPF to distribute labels LDP/RSVP not required MPLS Data Plane Reused without any change Leverage existing MPLS hardware Push, Swap and Pop operations reused Segment = Label Programmable scalable & resilient TE Path calculated and programmed by SDN Controller Reduced state in the network Highly responsive PERFECT FIT WITH SDN EVOLUTION NOT REVOLUTION Telecom Summit 2015 Public Ericsson AB Page 15

16 Sr Is Real and happening! Excellent endorsement and leadership from SP and Enterprise operators IETF: Multi-vendor consensus and collaboration: Stefano/Clarence - Cisco Jeff Tantsura - Ericsson Wim Hendericks - ALU Hannes Gredler - Juniper Detailed IETF drafts submitted: Architecture Use-cases ISIS extensions OSPF extensions BGP extensions PCEP extensions FRR with 100% coverage Telecom Summit 2015 Public Ericsson AB Page 16

17 SR addresses operator s needs & makes SDN promises true Faster TTM, simplification Programmability and Application awareness OPEX reduction Removes complexity from the network, no LDP/RSVP, state is in the packet, fully automatic 100% IP FRR coverage, native IPv6 CAPEX optimization Investment protection - can be used with the existing equipment, only SW upgrade needed (HW on ingress in some cases) Reduces cost and complexity of core networks (long term) Packet/Opto integration Coherent multilayer resource provisioning and dynamic reoptimization On demand bandwidth and admission control Connection-oriented connectivity, carrier grade OAM Telecom Summit 2015 Public Ericsson AB Page 17

18 Eantc 2015: SR ISIS interworking e///, cisco and alu Telecom Summit 2015 Public Ericsson AB Page 18

19 ODL: BGP processing Application (Topology Consumer) Controller BGP-LS Topology Exporter RESTCONF MD-SAL Notification MD-SAL Set MD-SAL Get MD-SAL Set BGP-LS-SR /operational BGP-RIB /operational Topology MD-SAL BGP-LS-SR speaker (RR) Telecom Summit 2015 Public Ericsson AB Page 19 draft-ietf-idr-ls-distribution draft-gredler-idr-bgp-ls-segment-routing-extension

20 ODL: PCEP processing H-PCE PCE Controller Applications (topology/constrains/feedback) RESTCONF MD-SAL Notification MD-SAL Set MD-SAL Get MD-SAL Set PCEP /operational /operational Topology I2RS/OF/other SBI s MD-SAL PCEP speaker (ingress) Telecom Summit 2015 Public Ericsson AB Page 20 draft-sivabalan-pce-segment-routing draft-ietf-pce-stateful-pce draft-ietf-pce-pce-initiated-lsp

21 I want a path from A to F Min link BW=10G Min link delay < 10ms SDN Orchestration SR PCEP A->F Topology A->B->D->F A->C->E->F Link BW Delay A->B 10G 10ms B->D 200G(SRLG) 15ms D->F 10G 10ms Link BW Delay A->C 10G 5ms C->E 100G 10ms E->F 10G 10ms ->C->E->F Telecom Summit 2015 Public Ericsson AB Page 21

22 I want a non-constrained path from A to F Optimize BW use == UCMP SDN Orchestration SR PCEP A->F Topology A->B->D->F A->C->E->F Link BW Delay A->B 10G 10ms B->D 200G(SRLG) 15ms D->F 10G 10ms Link BW Delay A->C 10G 5ms C->E 100G 10ms E->F 10G 10ms ->{B,C}->F Telecom Summit 2015 Public Ericsson AB Page 22

23 SDN Orchestration: analytics realtime feedback reoptimization SR PCEP A->F Topology A->B->D->F A->C->E->F My link towards F is overloaded Link BW Delay A->B 10G 10ms B->D 200G(SRLG) 15ms D->F 10G 10ms Link BW Delay A->C 10G 5ms C->E 100G 10ms E->F 10G 10ms ->B->D->F Telecom Summit 2015 Public Ericsson AB Page 23

24 Router 6000 series A Router for Every Application Outdoor small cell Zero foot-print RBS modularity Indoor small cell Sync Power over Ethernet Macro cell site 1 GE and 10 GE Pre-aggregation Small C-RAN 100 GE transport stackable Aggregation Large C-RAN Modular & redundant high port density Router 6371 Router 6471 Router 6672 Router 6675 Router 6274 Integrated in Ericsson Radio System / Managed by Ericsson Network Manager / Scalable capacity / SDN enabled Telecom Summit 2015 Public Ericsson AB Page 24

25 ROUTER 6000 APPLICATIONS Fixed, mobile, and converged Router 6675 ENTERPRISE Router 6274 MOBILE Router 6672 FIXED RESIDENTIAL Telecom Summit 2015 Public Ericsson AB Page 25

26