Tech Tips

Terry Slattery
Principal Architect

We have an on-going program of writing a description of various network technical tips and posting them on our web site as well as making them available to various publications. These tech tips encompass topics like Root Bridge Selection, 95th Percentile Calculation, and Duplex Mismatch. The number of each tech tip is out of a long list of tech tips we’ve identified regarding network best practices and technology. We periodically pick a topic from the list, thus the seemingly random numbering.

Network people have a lot of different tools, so we provide a general description of the topic, then describe both a manual process and the NetMRI process for implementing the tech tip’s recommendations. There’s enough information in each tech tip that you should be able to use whatever tools you have available to implement automatic analysis. Of course, we’d really appreciate it if you would use NetMRI with its built-in analysis to automate the analysis.

That’s the real value of what we’re doing at Netcordia – Audit, Automate, and Analyze.

  • Audit identifies what’s on the network.
  • Automate the audit and data collection.
  • Analyze the collected data using rules derived from network best practices and lists of common problems.

It’s the automated audit (network discovery) and analysis that allows network engineers to make big improvements in their efficiency and in the uptime and performance of their networks.



Re-posted with Permission 

NetCraftsmen would like to acknowledge Infoblox for their permission to re-post this article which originally appeared in the Applied Infrastructure blog under


Leave a Reply


Nick Kelly

Cybersecurity Engineer, Cisco

Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.


Virgilio “BONG” dela Cruz Jr.

CCDP, CCNA V, CCNP, Cisco IPS Express Security for AM/EE
Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.


John Cavanaugh

CCIE #1066, CCDE #20070002, CCAr
Chief Technology Officer, Practice Lead Security Services, NetCraftsmen

John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services.  Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.

He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.