第一篇日志 SDN初阶的五个境界

前言：

前阵子，知乎网站上在黑一个叫july的人，大致的来由如下：

july这个哥们，作为一个专科毕业专业课过不了的孩子，靠着数年的坚持，不断的总结整理算法相关的文档资料，居然也排到了csdn的前几名博客作者，然后一帮大牛各种鄙视他。作为一个科班出身的人，咱也对专业课都考不过的人看不太上，不过我很佩服他做笔记整理的学习的坚持。人生其实就在于坚持，在这里，希望像他学习，把一个领域的知识坚持学习，坚持整理，即便不会，也要做到烂熟。 如下内容，是SDN领域入门级别的能力雷达，我现在自评大约为0.8，争取通过一年的时间，能够达到4.5以上。

                                                                                                      李青林

DOMAIN 1: NETWORKING CONCEPTS

Identify and compare the layers of OSI and TCP/IP models and functionality of various fundamental elements of networking.

• Ethernet networks
• Collision domains and broadcast domains
• Function of routers and switches
• Routing Protocols (RIP, OSPF, ISIS, BGP)
• Optical network fundamentals – SONET/SDH, OTN
• IP Network Services ( DHCP, DNS, ARP, NAT, ICMP)
• Layer 2 addressing, including address resolution
• IPv4 and IPv6 fundamentals
• Layer 3 / IP addressing, including subnet masks
• Longest match routing
• Connection-oriented vs. connectionless protocols
• Packet Filtering with Match/Action Pairs

 

DOMAIN 2: SDN CONCEPTS

Describe the fundamental characteristics of SDN, definitions, use cases, and history.

• History of SDN (Clean Slate, Ethane, OpenFlow®, donation to ONF)
• What is SDN? (control and forwarding)
• SDN Value Proposition
• SDN Use Cases in the Data Center
• SDN Use Cases in Campus Networks
• SDN Use Cases in Service Providers
• SDN Use Cases in the Enterprise
• SDN Use Cases in Mobile Networks
• The six characteristics of an SDN Network (Plane Separation, Simplified Forwarding Element, Centralized Control, Network Automation, Virtualization, and Openness)
• SDN Devices (Controllers, Switches, Orchestration, API's)
• Overlay Networking Abstractions (NFV, VxLAN, etc.)

 

DOMAIN 3: OPENFLOW®

Identify at a concept/definition level the OpenFlow® Protocol operations and list the packet types and contents.

• TCP level secure channel/communication/session establishment between controller/switch
• Message Types
• Basic Operation/Packet Matching
• Differences between OpenFlow® versions
• Proactive vs Reactive Flows
• Statistics/Counters
• Setting up a flow
• Policy Enforcement
• OpenFlow® Management and Configuration Protocol (OF-Config, OAM, OFDPA, OVSDB, etc.)
• Flow Table Entry Format
• Flow Timers
• Pipeline Processing
• Match Types
• Match Actions

 

DOMAIN 4: SDN ARCHITECTURE AND ECOSYSTEM

Understand and Identify SDN architectural components, standards bodies, controller design, API’s and applications.

• SDN Layers
• SDN Architecture compared to Traditional Network Architectures
• Northbound API's
• Southbound API's
• East/West API's
• Security and Availability
• Packet and Optical Integration methods
• Migration Strategies
• Hybrid Mode Switches
• Organization in the SDN Ecosystem
  • Standards Bodies and Industry alliances
  • Network Operators and Enterprises
  • Network Equipment Manufacturers
  • Software vendors
  • Academic and Industry research institutions and labs
  • Open Source Initiatives
• Who is the ONF and what do they do?
  • Purpose
  • Structure
  • Technical Working Groups
  • Open Source Software Development
  • Activities and Initiatives
• Controller Placement and Redundancy
• SDN Applications (service chaining, virtualized network functions, analytics)

 

DOMAIN 5: OPEN SOURCE SDN

Identify key open source projects in the SDN Ecosystem.

• OpenFlow® Agents
  • Indigo
  • Linc
  • OVS
  • CPqD/ONF Driver (aka "libFluid")
• OpenFlow® Controllers
  • NOX
  • POX
  • ONOS
  • ODL
  • Floodlight
  • RYU
• Utilities and Tools
  • FlowSim
  • Mininet
  • Of DPA
  • OF Test
  • Wireshark
  • Avior
• Open Source SDN Distributions (OSSDN Atrium, etc.)
• Open vSwitch
• Orchestration Systems
• Open Source Initiatives (OPNFV, OCP, ODCA, Open Config)