More Related Content
Nfv compute domain
- 1. Network Function Virtualisation- Compute Domain Neelima Sharma
- 2. The content ofthis presentation is taken from the ETSI NFV specifications and from various presentations available on internet
- 3. What is covered… Compute Domain – Overview Compute Domain – Architecture Compute Domain – Functional Elements Compute Domain – Deployment Scenarios Compute Domain – External Interfaces Compute Domain – E2E Requirements Compute Domain – Functional Blocks Compute Domain – Interfaces within domain Compute Domain - Modularity
- 4. Compute Domain -Overview Compute Domain includes : Storage Network I/O interfaces
- 5. Compute Domain –High Level Architecture
- 6. Compute Domain –General Architecture and Associated Interfaces In the above figure following interfaces are important: Interface 11 : Compute domain and management and orchestration Interface 14 : Interconnecting to infrastructure network
- 7. Compute Domain –Reference Architecture Framework
- 8. Compute Domain -Interest Compute Domain related interfaces: VNF-NFVI : Reference point between NFVI and VNF VI-Ha : Reference point interfacing the virtualization layer to the hardware resources Nf-Vi : Reference point used to assign virtualized resources in response to resource allocation requests
- 9. Compute Domain –Functional Elements Compute Domain includes following functional elements : Processor and Accelator x86 or ARM based Network interfaces ( NIC’s) card Storage Large scale and non-volatile like hard disks, solid state disks and so on.
- 10. Compute Domain –Deployment Scenarios
- 11. Compute Domain –External Interfaces Physical network Interfaces Ethernet CAT 5/ 6 cable with speed up to 1 Gbps IEEE802.3 specs compliant Fibre-Channel Fibre channel with speeds : 1, 2, 4, 8, 10, 16 and 20 Gbps 4G and 8G standard compliant Infniband Serial style of interface QDR, FDR, EDR speeds
- 12. Compute Domain –External Interfaces Internal and External domain interfaces NFVI to VIM (Nf-Vi) Nf-Vi/C Used by VIM to manage the compute and storage portion of NFVI Vi-Ha/csr Interface between the compute domain and hypervisor domain Used by hypervisor/OS to monitor the available physical resources of the compute domain Management and Orchestration interfaces
- 13. Compute Domain –E2E Requirements Below attachment defines the E2E requirement for compute and storage
- 14. Compute Domain –Functional Blocks Definition “An NFV compute node is a coherent domain with an instruction set architecture that is managed as a single compute execution environment. A compute node includes a NIC to communicate with other compute nodes, network elements and storage elements” Various blocks of the compute Domain are detailed below : CPU Complexity Level of integration H/W and S/W interfaces Hypervisor interfaces Instruction-sets and programmability Number of CPU sockets Clock speed and form factor
- 15. Compute Domain –Functional Blocks Network Interfaces and Accelerator NIC to include H/W acceleration engines for encryption, encapsulation, forwarding and switching Hardware accelerators such as encryption, digital signal processing (DSP), packet header processing, packet buffering and scheduling etc support Additions to the instruction set architecture which implement new s/w acceleration features
- 16. Compute Domain –Functional Blocks H/W abstraction layer implemented by the hypervisor and guest O.S
- 17. Compute Domain –Interfaces within domain PCIe Interconnects the NIC and/or acceleration cards to the host CPU SR-IOV ( Single Root I/O Virtualisation) Used to virtualize the PCIe and the attached NIC One physical NIC card can support up to 128 virtual functions (VF’s) Assigning each PCI express virtual function can be directly assigned to a virtual machine I/O overhead in the software emulation layer is diminished
- 18. Compute Domain –Interfaces within domain RDMA ( Remote direct memory access) Allows server-to-server data movement directly between applications memory Provides low latency, improved resource utilization, flexible resource allocation, scalability and unified fabric RDMA over Converged Ethernet (RoCE) New RDMA protocol over Ethernet Provide data center convergence over reliable Ethernet and Data center bridging (DCB) RoCE communications can be as low as 1/10th the latency of any other standards
- 19. Compute Domain –Interfaces within domain Infiband Direct access to a Network Interface (NIC) straight from application space Ability for apps to exchange data directly between their respect buffers across a network Creation of a virtual channel connecting two applications which exist in entirely separate address space Provides messaging service that application can access Used for storage, IPC, message exchanging Deliver higher bandwidth and low latency
- 20. Compute Domain –NFVI Modularity NFVI hardware resource modularity options
- 21. Compute Domain –NFVI Modularity Composite - NFVI NFVI from COTS elements like servers, disk, switches, power supplies, fans and so on Another approach is use of an OCP pooled resource structure Field replaceable units are components of the NFVI NFVI-Pod NFVI from COTS elements but with no field replaceable units Deployed with various capacities and form factor Failed elements will be marked as unavailable for use NFVI-Plugin COTS deployable unit of NFVI H/W resources that is field replaceable unit within some other network element Managed by the NFV management and orchestration entities
- 22. Compute Domain –NFVI Modularity Composite - NFVI NFVI from COTS elements like servers, disk, switches, power supplies, fans and so on Another approach is use of an OCP pooled resource structure Field replaceable units are components of the NFVI NFVI-Pod NFVI from COTS elements but with no field replaceable units Deployed with various capacities and form factor Failed elements will be marked as unavailable for use NFVI-Plugin COTS deployable unit of NFVI H/W resources that is field replaceable unit within some other network element Managed by the NFV management and orchestration entities