SDN+NFV Next Steps in the Journey
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1 SDN+NFV Next Steps in the Journey Margaret T. Chiosi AT&T Labs Distinguished Architect SDN-NFV Realization 2015 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T
2 Agenda The SDN+NFV Components Common Use Cases Example of a Flow What is a Platform? Multi-Tenancy DPI, Firewall, Load Balancer, Video Optimization... How Open Forums can Help 2 affiliated companies. The information contained herein is not an offer, commitment, representation or warranty by AT&T and is subject to change
3 SDN in a Virtualized World Service Orchestrator Controller Virtual Function Physical Function Cloud Orchestrator VM Container (NFVi) 3
4 Controller Types SDN Global Controllers SDN Local Controllers e.g. OpenDaylight e.g. NSX, Nuage, OpenContrail SDN Global Controller manages the global end to end connectivity, focusing on underlay and WAN connectivity, and has the end to end topology. SDN Local Controller manages the local overlay connectivity and has only the local topology.. Provides connectivity support across VMs and hypervisors SDN Nodal Controller is the control plane for fabric switch, white box environments SDN Nodal Controllers e.g. ONOS 4
5 THE Controller? SDN Global SDN Local SDN Controller? SDN Nodal 5
6 How Do They Interact? Service Orchestrator Cloud Orchestrator - Openstack SDN Global (OpenDaylight Based) Adapter Adapter Policy SDN Local vs/vr ESXi KVM SDN Nodal White Box Fabric Switch WAN Analytics 6
7 SDN Control & Orchestration Framework 8 SDN Global Controller Service Orchestrator Cloud Orchestrator (Openstack) Application Controller SO performs end to end role of managing the infrastructure, network, and application scopes SDN Global Controller manages the global end to end connectivity SDN Local Controller manages the local overlay connectivity SDN Nodal Controller manages the forwarding tables for a fabric switch Cloud Orchestrator manages compute, storage Application Controller manages the applications (L0-L7) 6 9 WAN SDN Nodal Controller 7 SDN Local Controller Fabric Switch 5 7 Cloud Overlay (e.g. vs, vr) 3 12 Applications/VNF (e.g. vsbc, vpe) Steps Descriptions 1 Receive order 2 Allocate resources 3 Configure virtual resources 4 Configure network 5 Configure cloud underlay 6 & 7 Configure overlay or forwarding 8 & 9 Configure E2E connectivity 10 Configure info for apps 11 & 12 Configure app Cloud Underlay (e.g. TOA, LAN, IPE) 7
8 Changing Service Model Current Service Methodology elements on purpose driven hardware Order entry drives Provisioning, Inventory Various network elements configured independently with proprietary models Capacity Mgmt, Fault Mgt, Performance Mgt done outside the network Possible Future Methodology elements generic hardware and configured with a common protocol (e.g.; NetConf and Yang) Service is auto-provisioned through central orchestration is the database of record and drives, Billing, Ops, Care, etc provides state and analytics Customer eservicing Customer eservicing Traditional OSSs Capacity Mgmt. Service Request Service Model Service Request Service Orchestration Fault Mgmt. NE Specific Translations Performance Mgmt. Push Equip Specific Configs Application & Controllers Policy Analytics NE1 NE2 NE3 vnf1 vnf2 vnf3 8
9 Common Use Cases Virtualize Function Server Failover Use Case Architecture component Cloud Orchestrator SDN Controller Cloud Orchestrator SDN Controller Site Failover Service Orchestrator - Cloud Orchestrator SDN Controller Scale out/in VF in one location or multiple locations based on time or traffic Service Orchestrator - Cloud Orchestrator SDN Controller Customer request causing VF spin up Service Orchestrator - Cloud Orchestrator SDN Controller Customer bandwidth on demand Service Orchestrator - Cloud Orchestrator SDN Controller Multi-tenancy to application Service Orchestrator - Cloud Orchestrator SDN Controller 9
10 SDN Controller Traffic Redirection for Virtualized Function (L0-L7) SDN Controller PE 3 PE 4 PE 1 Virtual Function A PE 5 P PE 2 Virtual Function B PE n PE 2 Virtual Function C 10 affiliated companies. All other marks contained herein are the property of their respective owners.
11 Site Failover Flow Background 3 Site A, B, C 100 users are at Site A 80 Users are at Site B Site A fails Policy identifies Virtual Function (VF) Capacity is 100 users BW capacity Application Latency Compute/storage capacity Data collection of servers and network identifies usage Analytics identifies that 20 users can go to site B and 80 users go to site C VF at Site C needs to be instantiated by cloud orchestrator SDN controller moves the network access to what analytics identified 11
12 Suggested Site Failover 8 SDN Global Controller Service Orchestrator Cloud Orchestrator (Openstack) Application Controller SDN Global NC SO performs end to end role of managing the infrastructure, network, and application scopes SDN Global Controller manages the global end to end connectivity SDN Local Controller manages the local overlay connectivity Cloud Orchestrator compute, storage Application Controller manages the applications (L3 in this example) SDN Local Controller WAN, VF A 5 7 Cloud Overlay (e.g. vs, vr) Cloud Underlay (e.g. TOA, LAN, IPE) 3 12 VF C Steps Descriptions 0 Site A Fails 1 Request new VF C 2 Allocate resources 3 Configure virtual resources 4 Configure network 5 Configure cloud underlay 6 & 7 Configure overlay 8 & 9 Configure E2E connectivity 10 Configure info for VF C 11 & 12 Configure VF C 13 Redirect VF A to VF B & C 12
13 Mobile and Broadband Internet Access Multi-tenancy At A Server Level Customer-1 Sites VPN-1 AT&T CBB RR Orchestrator SDN Global NC Virtual Private Data Centers Service Orchestrator I-PE/ I-CE SDN Global - Local NC VRF VRF IRB Subnets Subnets VM vswitch/rtr VM VM VM VPN-2 Subnets Subnets Customer-2 Sites 13
14 Mobile and Broadband Internet Access Multi-tenancy At VM Level Customer-1 Sites AT&T CBB Virtual Private Data Centers Service Orchestrator Subnets Subnets VPN-1 RR Orchestrator SDN Global NC I-PE/ I-CE SDN Global Local NC VRF VRF IRB VRF VM vswitch/rtr VRF VPN-2 Customer-2 Sites 14
15 NFV Platform Cloud Orchestrator Applications Services NFV Platform Broadband Internet Hosting Mobility Business VPN DNS DHCP NTP Radius LDAP LRSI Content Routing Syslog TACACS+ Route Reflectors Netflow CDN EPC Routers Control Plane Data Plane Compute Storage DPI Data Optimization Load balancing DNS Hypervisor Security Node 15
16 SDN+NFV Open Landscape Sample Forum IETF ETSI ISG NFV ONF OPNFV Openstack OpenDaylight ONOS DPDK KVM OVS Linux Focus Yang NetConf Standard NFV Platform Standard Openflow SDN Controller Standards NFV Open Platform Cloud Orchestrator Open Source Brownfield SDN Controller Open Source Openflow SDN Controller Open Source CPU/NIC HW API data plane dev kit Hypervisor open source vswitch Operating System 16
17 Industry Next Focus Having a common framework of service orchestrator, cloud orchestrator, controller and NFV platform (expand) Have a common flow among these entities Have a common set of use cases which validate these flows Expand functions which become part of NFV 17
18 Q&A 18
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