Peter Welcher

This blog is part of a series covering various SD-Access topics.   Previous blogs in this series:  What Is SD-Access and Why Do I Care?  Navigating Around SD-Access  Managing SD-Access Segmentation  [...]

This blog attempts to cover some of the things you might want to consider when designing an SD-Access deployment for more than one site.   Previous blogs in this series:  What [...]

This blog is about SD-Access single site designs. My goal is to touch on some (but likely not all) important aspects of single-site design and provide links to good relevant [...]

This blog is about how to secure traffic coming from the SD-Access fabrics, emphasizing SD-Access Transit designs. Prior blogs in this series: What Is SD-Access and Why Do I Care? [...]

This blog is about the concepts underlying SD-Access segmentation. It covers the forms of segmentation, where enforcement can occur, and some practical advice. Previous blogs in this series: What Is [...]

Network Field Day 23 took place from September 29 through October 2. I was able to attend (virtually) since NetCraftsmen likes to track current trends to provide the best guidance [...]

This is the second blog in a series of blogs about Cisco’s SD-Access (“SDA”). It will cover device roles and SDA terminology, and some of the high-level choices (how to [...]

Using recent Cisco technology, Software Defined Access (SDA) provides user and device access security and could be the future of your campus switching environment.  Enhanced with powerful automation, it provides [...]

I’ve recently been doing most data center network designs with Nexus 9300 switches. As dense server virtualization has shrunk the data center, organizations with say 500 VMs no longer need [...]

I’ve been waiting to see some good ideas for things you might run in a container on a Cisco router or switch. What might you do with that, either home-grown [...]

Among other things, for some time now I’ve been designing data centers with Nexus 93180 or 93240 switches, leveraging their 40 / 100 Gbps ports and inexpensive 100 Gbps copper [...]

Who owns Cloud Security in your organization? Or what is the division of responsibility? Are they treating cloud as just another part of your network, or are they considering risks [...]