Packet-Optical SDN Field Trial for Multi-Layer Network Optimization. Jim Theodoras May 2016

Transcription

1 Packet-Optical SDN Field Trial for Multi-Layer Network Optimization Jim Theodoras May 2016

2 OSI Stack Top of Stack Application Presentation Session Data 4 Transport Layer TCP, UDP Segments SDN 3 Network Layer IP/MPLS Packets 2 Data Link MAC Physical 1 PHY Bits Frames Bottom of stack 2

3 Juniper NorthStar WAN SDN Controller NorthStar Controller JUNOS: Proven Service Provider OS Built Upon 25 Years of Proven Network Optimization Algorithms Predictability Centralized Traffic Engineering Open Standard Base Protocols and Programmable API s Northbound Rest API 1. Topology Discovery IGP, BGP (JUNOS OS) 2. Path Computation WANDL Algorithms 3. Path Installation - PCEP Use Cases Bandwidth Calendaring: Calendar Bandwidth Elastically Anytime Premium Path: Constrain Based Path Optimization on Latency, Link Utilization, Nodal count, etc Elastic TE Bin Packing: Efficiently Distribute Traffic Flows Elastically Across the Network Path Diversity: Eliminate Shared Risk Link Groups Maintenance Mode: Continuous Traffic Optimization while Maintaining SLAs During a Maintenance Windows Autonomous Optimization: Continuously Compute New Optimize Paths NorthStar Controller 3 * Thomas Mueller, Juniper Networks, KINBERCON 2016

4 ADVA FSP Network Hypervisor Interfaces GUI REST NETCONF OpenFlow Tenant Portal Network Hypervisor Core Unix, x86 Server Functions User, Tenant Admin Topology Inventory Provisioning Surveillance Function Interfaces Network abstraction for SDN Northbound Network presentation Virtual Network Segmentation and management Multi tenant management and policy Provisioning, Surveillance Flexible Northbound interfaces for multiple control environments OpenFlow for SDN controller interface REST for WAN controller interface (operator owned) GUI, Tenant portals 4

5 Northstar Plus FSP 3000 Network Hypervisor User Interfaces Hypervisor 3 rd Party Apps Orchestration Storage Compute Network Transport Apps NorthStar Network Hypervisor Programming NorthStar provides the programmable forwarding plane Packet layer is directly programmable Network Hypervisor makes Optical layer programmable Resource Virtualization Network Hypervisor abstracts the network into slices Function Virtualization Local Hypervisor abstracts NE compute, storage resources into virtual machines Applications deployed in DC and Network by Orchestration Service chaining requires programming forwarding plane Optical Network ADVA s Network Hypervisor provides an abstracted view of the Transport network towards Juniper s NorthStar SDN Controller 5

6 Benefit: Diversity Control S3 M-SRLG: 100 Metric: 12 S5 Abstract Links reflect diversity of server network Server network connections may share fate Multiple wavelengths which share the same fiber Path computations in client network may require diversity Abstract links must expose fate sharing of server network connections Collapsed, abstract-layer network, Topology S9 M-SRLG: 200 Metric: 12 M-SRLG: 200 Metric: 15 S11 S8 Shared Risk Link Groups (SRLGs) Integer annotations to TE links, identifying fate-sharing groups SRLGs are per-layer/domain, must be coordinated Path computation considers annotations as constraints If paths are SRLG-diverse, guaranteed to not share fate Client & serverlayer Topology(s) S3 S9 S5 S11 S8 Sharing Server Layer Client Layer SRLG = <nil> SRLG = <X> SRLG = <X> * Thomas Mueller, Juniper Networks, KINBERCON

7 Software Defined Packet-Optical Networking Demonstration at SDN OpenFlow World Congress, Duesseldorf, Germany, October 12-16,

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