OCP Summit 2016 - Transforming Networks to All-IT Network with OCP and Open Networking
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The document discusses SK Telecom's efforts to transform its telecom networks into an all-IT convergence network using Open Compute Project (OCP) technologies. It details porting the Indigo and OpenSwitch networking operating systems to the OCP Wedge switch platform using Open Network Linux. It proposes developing a modular server switch design based on Intel switching silicon to replace dedicated network appliances with virtualized network functions. It calls for collaboration on further developing and testing the server switch design.
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OCP Summit 2016 - Transforming Networks to All-IT Network with OCP and Open Networking
- 3. Content • All-IT Network • Building All-IT Network with OCP Powered Networking • Porting Indigo on Wedge + Open Network Linux (ONL) • Porting OpenSwitch on Wedge • Lesson Learned & Proposal • Making Server Switch with OCP technologies 2
- 4. SKT 5G Network Vision 【 2G/3G/4G N/W 】 Data Center Silo WCDMA CDMA 3G PS(Data) 2G/3G CS(Voice) IPIP TDM ATM MobileNetworkDataCenter 【All-IT Network】 Cloud RAN Network Convergence •SDN/NFV •Programmability •Open H/W and S/W vEPC Cloud Core • Evolving a Telcom operator network into an IT convergence network LTE EPCLTE IP IPIPIP Server Farm 3 Virtualization Media IoT
- 5. Agenda • All-IT Network • Building All-IT Network with OCP Powered Networking • Porting Indigo on Wedge + Open Network Linux (ONL) • Porting OpenSwitch on Wedge • Lesson Learned & Proposal • Making Server Switch with OCP Technologies 4
- 6. 5 REST Handler Initial Prep. C-Node VM VM C-Node VM VM C-Node VM VM Gateway OVS-DPDK Gateway OVS-DPDK Edge GW OVS-DPDK… Neutron API OVS OVS OVS vNet #1 vNet #2 vNet #3 L2 Switching L3 RoutingARP DHCP • SONASimplified Overlay Networking Architecture • L2/L3 networking • Scalable Edge GW with H/W acceleration • OpenStack integration (i.e., Neutron APIs) • OpenFlow/OVSDB protocols • OpenFlow Data Path features • Multiple tables • Group tables • Flow-based metering and QoS control Building Open Networking with OSS
- 7. 6 REST Handler Initial Prep. Neutron API L2 Switching L3 RoutingARP DHCP • SONA extensions • ECMP like fabric management • Network configuration/provisioning Applying Same Methodology to Network Fabric ECMP like Fabric Mgmt Network Config White Box White Box White Box White Box White Box White Box White Box White Box White BoxWhite Box Leaf-Spine Fabric Making bare metal switch to OpenFlow switch
- 8. • Wedge • x86 Rangeley CPU board • Broadcom Trident2 (via OpenNSL) • Open Network Linux (Linux v3.2) • FBOSS for forwarding agent • Porting Indigo on Wedge + ONL • Platform independent modules • Platform dependent modules 7 Making Wedge Switch to support OpenFlow Open Network Linux OF-DPA
- 9. Alternative option - OpenSwitch • Comparison 8 OpenSwitch Open Network Linux Build System Yocto Debian like build system with Python + Bash Forwarding Agent Open vSwitch § L2/L3 networking § OpenFlow 1.3+ FBOSS § L2/L3 networking Indigo § OpenFlow 1.3+ System State DB OVSDB FBOSS SDK Library OpenNSL OpenNSL HAL for Platform None ONLP Configuration model CLI, REST, Chef, Puppet, Ansible, OVSDB protocol (RFC7047) Thrift RPC
- 10. Dependency in ASIC Kernel SDK • Porting & rebuilding OF-DPA source code for Wedge platform • No source code is available without NDA • No information on how much efforts do we need • Software pipeline that implements the OpenFlow pipeline • Try to implement OF-DPA like functionalities with OpenNSL • Port implementation at minimal functionalities is fine • E.g., port information, port statistics, … • Flow related features can’t be implemented, except L2/L3 functions • E.g., multiple tables, group tables, flow entry statistics, … 9 Usually vendor does! Workaround
- 12. • A broad spectrum of ASIC chips and platforms we already use • ASIC vendors: Intel, Broadcom, … • Platforms: Accton, Edge Core, HP, Altoline … • How do we remove vendor dependencies? • Vendor agnostic API layer is under review in OCP community • SAI • ACPI 11 Interested in Vendor Agnostic Interface Layer
- 13. Call for Collaboration on SAI • SAIService Abstraction Interface • Still focusing on legacy networking features • OpenFlow 1.3+ features • Multiple tables • Group tables for ECMP like Fabric management • Flow-based metering and QoS control for E2E QoS guarantee in future 5G requirement 12
- 14. Agenda • All-IT Network • Building All-IT Network with OCP Powered Networking • Porting Indigo on Wedge + Open Network Linux (ONL) • Porting OpenSwitch on Wedge • Lesson Learned & Proposal • Making Server Switch with OCP technologies 13
- 15. Server Switch Use Case • Replace dedicated network appliance boxes to virtualized network functions • Designed for NFV use cases TOR FW, VPN Server Farm Data backup … LB Space Efficiency↑ LB VPN FWToR 14 G/W G/W G/W Spine Leaf Leaf Leaf Spine SpineSONA Scalable GW SONA Fabric Vnet Mgmt. Network Nodes Network Nodes
- 16. Server Switch H/W Spec • Server Switch • Modular design • 2X power supplies • Intel Red Rock Canyon (RRC) Switching silicon • 4X PCIeG3 x8 (total 200Gbps) • x36 1G/2.5G/10G • x24 25G • x9 40G • x6 100G • Dual Intel Xeon E5-2600 v3 CPU (Haswell) • 4X 2.5` SATA SSD 15 Z-PACK Header Intel Rangeley SFP+ : Port0~7 SFP+ : Port8~15 SFP+ : Port16~23 Intel FM10000 PCIe G3 x8 GF PCIe x1 GF PSU#1 PSU#2 Dual Xeon CPUs Control Lane PCIe G3 x8 GF PCIe G3 x8 GF PCIe G3 x8 GF
- 17. Testing • Basics N/W functions • L2/L3 • NAT • DHCP • DNS • N/W Monitoring • NFV features • L4/L7 Load Balancer • Firewall • DDoS Mitigation • VPN • IDS/IPS • N/W SLA Analysis 16 Tested! Need to test
- 18. Future Plan • ONIE support • OpenBMC support • Other ASIC chips support (e.g., Broadcom Tomahawk) 17
- 19. Call for Collaboration / Contribution • H/W test & validation collaboration • Use case study • Contribution 18
- 20. Recap • Vendor Agnostic Interface Layers • SAI • OF-DPA support • Want contribution to Server Switch spec 19