For decades, network engineers have relied on the command-line interface (CLI) to configure routers, troubleshoot switches, and maintain infrastructure. While this method has been reliable, it’s also manual, repetitive, and increasingly inefficient in modern enterprise environments. As networks scale, cloud adoption accelerates, and hybrid models dominate IT strategies, the traditional CLI-based approach can no longer keep up with the complexity and speed that organisations demand.
This is the problem many IT professionals face today: how to remain relevant and efficient in a world that’s moving beyond manual network configuration. The solution? Network automation and programmability, and at the heart of this transformation lies Cisco DevNet.
In this blog, we explore why CLI is no longer enough, how automation is reshaping the future of networking, and how Cisco’s DevNet certification helps engineers adapt to this shift—while still integrating knowledge from platforms like Palo Alto training to deliver holistic network security solutions.
The Limits of the Traditional Command-Line Interface (CLI)
The CLI has long been a staple for network engineers. From configuring access lists to setting up VLANs, everything has been typed out line by line. While this provided fine-grained control, it also introduced several challenges:
- Time-consuming processes: Configuring dozens or hundreds of devices individually can take days.
- Human error: Manual entry increases the risk of typos and misconfigurations.
- Scalability issues: Modern networks are too large and complex for CLI-based management alone.
- Lack of consistency: Keeping configurations uniform across devices becomes a logistical nightmare.
As organisations adopt Infrastructure as Code (IaC), cloud-native models, and automation-driven DevOps practices, engineers are expected to manage environments that dynamically change based on real-time needs. CLI simply wasn’t built for that level of agility.
The Shift to Network Automation: What It Is and Why It Matters
Network automation refers to the use of software to automatically manage and configure network devices. This includes provisioning, security enforcement, performance monitoring, and policy implementation—without human intervention for every step.
Key benefits include:
- Increased efficiency: Reduce manual tasks and accelerate deployment cycles.
- Improved consistency: Deploy the same configuration across hundreds of devices without errors.
- Enhanced security: Automated validation of firewall policies, ACLs, and network behaviour.
- Greater adaptability: Seamlessly integrate networking with applications, cloud services, and platforms like Palo Alto Networks through APIs.
In fact, according to a recent LinkedIn Pulse article, roles requiring automation, Python, and DevOps skills are among the most in-demand in 2025.
This is where Cisco DevNet steps in.
Introducing Cisco DevNet: Your Gateway to Programmability
Cisco DevNet is Cisco’s initiative to equip engineers with software development, automation, and network programmability skills. The Cisco DevNet Associate certification is specifically designed for those who want to future-proof their careers by combining traditional networking knowledge with modern programming tools.
With DevNet, you’ll learn:
- How to automate using Python for network engineers
- Integrating with REST APIs using RESTCONF/NETCONF
- Applying Infrastructure as Code (IaC) using tools like Ansible
- Automating security rules across hybrid networks, including Palo Alto firewall integrations
- Leveraging DevOps practices within networking teams
This shift reflects the broader evolution of IT roles. No longer siloed, networking, security, and development now overlap—requiring engineers to understand and manage systems holistically.
Explore more about Cisco certifications and training to begin your DevNet journey.
Key Skills You’ll Gain: From Python Scripting to API Integration
The Cisco DevNet Associate exam focuses on building the exact skills needed to succeed in today’s tech landscape. Some of the most valuable include:
1. Python Scripting
Python is now considered essential for network engineers. You’ll learn how to:
- Write automation scripts
- Query APIs
- Parse JSON responses
- Perform bulk device configurations
These skills drastically reduce the time spent on repetitive CLI tasks and minimise errors.
2. API Integration
You’ll gain practical experience with:
- RESTCONF/NETCONF protocols
- Building and testing API calls
- Automating interactions with network devices, cloud services, and security tools
In hybrid environments, this means you can integrate your Cisco systems with external platforms such as Palo Alto firewalls, automating threat prevention policies, NAT rules, and VPN configurations—all without touching the CLI.
3. Infrastructure as Code (IaC)
Using tools like Ansible for networking, you’ll define network configurations as reusable code—enabling version control, audits, and rollback options. This approach mirrors DevOps practices and improves collaboration across teams.
How to Begin Your DevNet Journey Today
Getting started with Cisco DevNet doesn’t mean abandoning everything you’ve learned—it means enhancing your skill set to meet current demands. Here’s how to begin:
- Understand the Prerequisites
While not mandatory, knowledge of basic networking (e.g. CCNA-level) is highly recommended. - Choose a Trusted Training Provider
Red Education offers instructor-led DevNet Associate courses designed to help you pass the exam while building hands-on skills. Their programs combine theoretical understanding with lab-based exercises, helping you simulate real-world automation tasks. - Set Up a Lab Environment
Use Cisco’s DevNet Sandbox or create your own using virtual routers, switches, and Palo Alto devices. Practising real configurations and scripting exercises is the fastest way to build confidence. - Practice Exam Questions and Scenarios
Make use of official study materials and engage with online learning communities. Continuous learning and active participation in peer networks are essential for staying updated and building real-world confidence. - Pair with Security Training
With network automation often tied to security workflows, pairing your DevNet learning with Palo Alto training and certifications strengthens your ability to manage both infrastructure and protection layers.
Need help deciding the right path? Contact our team for personalised guidance.
Why This Matters for the Future of Networking
The future of networking is programmable, scalable, and security-integrated. Engineers who rely solely on CLI risk falling behind as companies demand faster deployments, better integrations, and smarter security.
By mastering automation with Cisco DevNet and complementing it with tools from industry-leading platforms like Palo Alto, you’re not just learning new commands—you’re adopting a new mindset. One where networks are treated as flexible systems, security is proactive, and infrastructure responds to real-time needs.
Recent discussions in online communities highlight the increasing demand for engineers who can “speak code” and collaborate across IT disciplines. Automation is no longer a niche skill—it’s becoming standard.
Final Thoughts: From CLI to Code-Driven Confidence
The traditional CLI may still have its place, but it can’t keep up with the pace and complexity of today’s networks. By learning automation through Cisco DevNet, you’re gaining tools that scale, improve accuracy, and make you indispensable in the evolving IT ecosystem.
Pairing this with Palo Alto certification not only boosts your technical capabilities but also positions you as a well-rounded, future-ready professional capable of managing both infrastructure and security.
Time to Advance Your Expertise
If you’re ready to move beyond the limitations of CLI and embrace the future of network engineering, now is the perfect time to take that step. Building automation and programmability skills through Cisco’s DevNet training can give you a strong edge in today’s evolving IT landscape. Pairing this with a solid foundation in network security—such as Palo Alto certification—can further enhance your capabilities and career prospects.
And if you’re unsure where to begin, contact the team at Red Education is here to guide you with expert advice and tailored learning paths. Your next big opportunity in IT starts with the decision to grow—and Red Education is ready to support you on that journey.
