There has been a lot happening around VIRL the last few weeks. A new release of VIRL just got released and today the VIRL team announced that they are adding support for running VIRL in the cloud. Cisco has chosen
CCDE – DMVPN Crypto Design Considerations
This post will describe some of the crypto design considerations for DMVPN. DMVPN Overview and Crypto Overhead First let’s have a quick recap of what Dynamic Multipoint VPN (DMVPN) is. DMVPN is an overlay technology where multi point GRE tunnels
CCDE – Introduction to GET VPN and GET VPN Design Considerations
Introduction to GET VPN GET VPN is a Cisco proprietary technology aimed for private WAN designs where there is a need to encrypt the traffic. This may be due to regulatory requirements or just a need to keep traffic private.
Firewall – Some Insight into the Cisco ASA Failover Process
I’m currently working on a design and needed to verify some failover behavior of the Cisco ASA firewall. The ASA can run in active/active or active/standby mode where most deployments I see run in active/standby mode. When in a failover
CCDE – WAN Speeds and Basic Voice Calculation
I’m preparing for the CCDE practical and I was doing a practice scenario by Jeremy Filliben and I realized that I’m not comfortable with all of the WAN speeds so I might as well write a blog post on it.
CCIE – How to Prepare for the CCIE Lab
Summary: By preparing a plan and strategy for the CCIE lab, the chance of passing will be a lot higher. Over the years I have written about the CCIE multiple times and also mentored people on how to prepare for the
CCDE – MPLS-TE Auto Tunnels
This post will briefly discuss the challenges of manually setting up MPLS-TE tunnels and how Auto Tunnels can lessen the burden of MPLS-TE tunnels. One of the main challenges with traffic engineering and MPLS-TE is the number of tunnels that
CCDE – Review Of CCDE Practical Workbook By Orhan Ergun
To kick off the new year, I will give you a review of the CCDE Practical Workbook by Orhan Ergun, CCIE #26567 and CCDE #2014:17. Orhan is a friend and has provided the workbook to me for reviewing. I would
CCDE – CCDE Qualification Exam Passed
A couple of days ago I passed the Cisco Certified Design Expert (CCDE) Qualification Exam which means that I am now eligible to take the CCDE practical. I’m aiming to give that a try in May. This post will give
Network Simulation – Cisco Releases VIRL 1.0
Just in time for thanksgiving, Cisco has released version 1.0 of the popular network simulation tool VIRL. This is a major new release moving from Openstack Icehouse to Openstack Kilo. This means that your previous release of VIRL will NOT