ddib – Daniels Networking Blog

Initial Setup of Catalyst SDWAN Controllers

ddib / June 18, 2026

It’s been a while since I did an on-premises installation of the Catalyst SDWAN controllers and as I recently had […]

ddib / June 13, 2026

Step CA is an open-source private CA made by Smallstep. I will use it to generate certificates for some componenents

ddib / June 11, 2026

Dnsmasq is an application which has features like DNS caching, DHCP server, and so on. It’s useful as a DNS

ddib / June 10, 2026

I’m reorganizing some things in my homelab and wanted to check how many hosts are alive in a /24. The

ddib / June 9, 2026

I need an on-premises Git server for my labbing so this post will describe how to install GitLab Community Edition

ddib / May 21, 2026

Cisco just announced major updates to their certification portfolio. Here’s what’s changing: CCNA v2.0 Effective February 2027, the CCNA is

ddib / May 15, 2026

Yesterday I took and passed the Cisco AUTOCOR (previously DEVCOR) exam which is the core exam for CCNP Automation. That

ddib / May 29, 2025

A long long time ago, BGP implementations would use a Maximum Segment Size (MSS) of 536 bytes for BGP peerings.

ddib / May 28, 2025

Link state protocols like OSPF and IS-IS use the Shortest Path First (SPF) algorithm developed by Edsger Dijkstra. Edsger was

ddib / May 5, 2025

In many ways, IS-IS is a simpler, and perhaps more elegant, routing protocol than OSPF. However, it often gets misunderstood.