Networks serve as the backbone for daily operations in virtually all organizations.  The stability of the network is crucial to everything else that relies on that uninterrupted connectivity.  Unless you have recently installed new equipment in the last few years, your network is on track for a refresh.   The idea of replacing all your core network infrastructure might be a nightmare for many.  Without a solid plan for implementation that nightmare could become a reality. 

A network refresh project can be daunting when you try to take it all in at once but to avoid turning this project into a nightmare, a well-structured plan and implementation strategy is essential. No two projects will but the same, but we can walk through some key items to mitigate risks and help ensure a successful network refresh. 

In no particular order, here are some important things to consider when planning for a network refresh:

Resource Allocation

Identify and allocate the necessary resources required for the implementation. Replacing a large amount of equipment is generally time-consuming and will require coordination with many departments and individuals.  Get this defined early. 

Project Timeline

Develop a project timeline with clear milestones and deadlines. Ensure that the timeline aligns with the organization's operational requirements and considers any potential downtime or maintenance windows.

Existing Equipment

Know what you are replacing.  It’s all too easy to put all your focus on the new equipment that is going to be installed.  Of course, it’s important but that isn’t our first step.  Complete a detailed inventory of all equipment impacted by this project, and consider what is going to happen to this equipment after it’s been replaced.

Physical Connections

Document all physical connections between existing equipment.  This will be critical to identifying physical layer issues that will rear their head at the last minute and prevent the project from moving forward until they are resolved.  A diagram is your best friend for this part.

Equipment Tracking

Create an equipment allocation matrix where every new piece of equipment is paired with the existing equipment it will be replacing.  Serial numbers, hostnames, IP addresses, etc.  The more details the better.

Credentials

Make sure you have all the proper credentials for existing and new equipment.  Don’t assume they will be the same as before.

Risk Assessment and Mitigation

Conduct a risk assessment to identify potential obstacles and challenges that could arise during the implementation. Develop risk mitigation strategies to address each identified risk effectively.

Change Management

Implementing a network refresh will likely result in changes to the plan. Have a plan for change management.  How are changes communicated and agreed upon? 

Testing and Quality Assurance

Establish a testing and quality assurance process to validate the new network design before full implementation. Conduct thorough testing of each component, ensuring that it meets performance and security requirements.

Backup and Rollback Plans

Develop backup and rollback plans to revert to the previous network configuration if unforeseen issues arise during the implementation. This ensures that you can quickly restore services in case of any critical failures.  In other words, always have a plan B. 

Vendor Coordination

If the project involves working with external vendors or service providers, coordinate with them closely to ensure seamless integration and timely delivery of components.

Documentation

Create documentation for the new network infrastructure, including network diagrams, configurations, and any specific guidelines or procedures. This documentation will be valuable for future reference, troubleshooting, and maintenance.

Communication

Communicate with end-users about the upcoming changes, potential downtime, and any adjustments they may need to make in their daily routines.

Contingency and Support Plans

Have contingency plans in place to address any unforeseen challenges that may arise during implementation. Additionally, establish post-implementation support procedures to provide assistance to users and address any issues promptly.

Security and Compliance

Ensure that the new network infrastructure adheres to all security standards and compliance requirements. Implement necessary security measures and conduct security assessments before deployment.

There is a lot more that goes into refresh projects beyond what we’ve covered in this blog.  My hope is that this information will help you in your planning when it’s your turn to take the plunge and get your network refreshed. 

This post was contributed by Ryan Flud, our VP of Project Management.

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