Intro to Ansible for Networkers

I made this quick video as an “Ansible 101” type introduction for some networking friends that just wanted a high-level intro to playbook creation and logic. So, I hope you enjoy it and get something useful from it. Please feel free to comment with any questions you may have! GitHub Repo: Intro to Ansible for Networkers - GitHub Repo

December 14, 2017 · 1 min · Dan C Williams

Cisco VIRL, pfSense, and Routed Management Networks

In this post I hope to quickly cover how I use pfSense to provide easily reachable management networks for simulations within VIRL. Below is a list of the technology I use in this lab environment: pfSense SG-1000 running 2.4 BETA Cisco VIRL_ — Core VMWare ESXi 5.5 Update 1 Generic VLAN Aware Layer 2 Switching I will not go through the entire installation of Cisco VIRL. I am just going to go through what I do in my personal environment to allow the FLAT & FLAT2 networks to be routable to the world....

June 15, 2017 · 5 min · Dan C Williams

Cisco DMVPN Phase 3

The Request I have a client with a data center, a headquarters/DR site, and a lot of branches spread out all over the world with Internet connectivity. They are currently using static IPSEC Internet facing VPNs to connect to their data center and HQ environemts, but the company is hitting a growth spurt and they are quickly realizing this solution is becoming difficult to scale and manage with their limited in-house IT staff....

March 21, 2015 · 8 min · Dan C Williams

Cisco IOS SSL VPN with AD/RADIUS Authentication

The Request: Now that Cisco has included SSL VPN licensing as part of the 15.3(3)M IOS I have had multiple clients ask about turning on the capability and reaching back into Active Directory for authentication. The Solution: The equipment I used to lab this solution: Cisco 881 w/ IOS 15.3(3)M3 ( Windows Server 2008 R2 ( First we will go through the steps to configure the RADIUS server on Windows so we have access to Active Directory for authentication....

December 6, 2014 · 4 min · Dan C Williams

Cisco 6807 VSS ISSU Upgrade

The Request: I have a client with multiple 6807 VSS pairs that required an IOS upgrade. All of the pairs have a single SUP2-T in each chassis and were in the 15 code train. Although the ISSU process is very straight forward I wanted to put this quick process up as I had to search through multiple documents to gather all the pieces I needed to knock it out. The Solution: Since these switches were in the proper code train to utilize ISSU I decided that was the best route to go....

December 5, 2014 · 7 min · Dan C Williams