OpenFlow
OpenFlow is a communication method that helps control how data moves through computer networks. Think of it like a traffic control system for computer networks, where network administrators can easily change traffic rules without physically touching each network device. It's part of a larger concept called Software-Defined Networking (SDN), which makes networks more flexible and easier to manage. Instead of configuring each network device separately, OpenFlow allows administrators to control everything from a central location, similar to how a traffic control center manages multiple traffic lights from one place.
Examples in Resumes
Implemented OpenFlow controllers to manage network traffic across multiple data centers
Designed and deployed OpenFlow-enabled network infrastructure for cloud services
Reduced network management complexity by transitioning to OpenFlow and SDN solutions
Typical job title: "Network Engineers"
Also try searching for:
Where to Find Network Engineers
Online Communities
Professional Networks
Events & Conferences
Example Interview Questions
Senior Level Questions
Q: How would you design a large-scale network using OpenFlow?
Expected Answer: A senior engineer should discuss planning for scalability, redundancy, and security, explaining how OpenFlow can centralize control while maintaining network reliability. They should mention practical examples of implementing such networks.
Q: What are the challenges of transitioning from traditional networking to OpenFlow?
Expected Answer: Should discuss change management, training requirements, potential network disruption risks, and strategies for gradual implementation while maintaining network stability.
Mid Level Questions
Q: Explain how OpenFlow can improve network security.
Expected Answer: Should describe how centralized control allows better monitoring, faster response to security incidents, and easier implementation of security policies across the network.
Q: How do you troubleshoot OpenFlow-enabled networks?
Expected Answer: Should explain basic troubleshooting approaches, monitoring tools, and how to identify whether issues are related to the OpenFlow controller or network hardware.
Junior Level Questions
Q: What is the basic function of OpenFlow in a network?
Expected Answer: Should be able to explain that OpenFlow is a protocol that allows central management of network traffic, making it easier to control and modify network behavior.
Q: What are the basic components of an OpenFlow network?
Expected Answer: Should mention the controller (the central management point) and switches (network devices that follow controller instructions), and how they work together.
Experience Level Indicators
Junior (0-2 years)
- Basic network configuration
- Understanding of OpenFlow concepts
- Basic troubleshooting
- Familiarity with SDN principles
Mid (2-5 years)
- OpenFlow controller configuration
- Network monitoring and optimization
- Security implementation
- Performance tuning
Senior (5+ years)
- Large-scale network design
- Migration planning and execution
- Team leadership
- Advanced security architecture
Red Flags to Watch For
- No understanding of basic networking concepts
- Lack of experience with any network management tools
- No knowledge of network security principles
- Unable to explain SDN concepts
Related Terms
Need more hiring wisdom? Check these out...
Navigating Compliance: Structuring On-the-Job Training in Regulated Industries
How Internal Gig Marketplaces Revolutionize Employee Development
Unlocking Talent Offline: Innovative Strategies for Recruiting in Low-Internet Areas
