Peter Welcher

This blog shares some thoughts about BGP Traffic Engineering (TE). The good news: there is some good content to be found on the Internet on the subject of BGP Traffic [...]

This blog takes a look at a couple of ways to design Internet connectivity in the presence of Layer 3 data center interconnect (DCI). There’s an inherent design question in [...]

Let’s talk about complex network technologies and how they affect your business. On the plus side, some complex technologies can automate functionality to large scale, and provide the prospect of [...]

Learn more about the Cisco Nexus 93240YC-FX2 switch, 100 Gbps fabric options, and the new alternative VPC with fabric peering.

One of my recent blogs alluded to inbound QoS. This topic came up in a recent consulting engagement. After considerable thought and some research (sounds better than “I googled some [...]

Determine what to look for, how to address and how to manage Quality of Service (QoS) and user experience issues on your network.

Container Networking is complex. Understand Docker Networking and the various network modes: Bridge, Host, Overlay and Macvlan.

Learn the basics of Container Networking and why they might be crucial to you; introducing virtual machines (VMs), Docker and Kubernetes.

Networking professionals need to become aware of networking within the cloud.

“WAN” and “Agile” are two words that usually are not found in the same sentence. Provisioning circuits takes quite a bit of time. Recently, I’ve been intrigued by Equinix Cloud [...]

This posting is a small update to the Cisco ACI section in my previous blog titled About Network Design Principles. How can one achieve consistency of ACI configuration? Why is [...]

Are firewalls necessary, and what are the alternatives?