I was a bit slow on this one. I have been very busy of late. VIRL have updated with a feature release. 0.9.17 is an in place upgrade. There is a lot of focus on stability. There is also a…

Cisco VIRL Cisco VIRL has been officially release. Cisco VIRL is Ciso’s network topology platform that allows the study, testing, simulation and validation of enterprise and service provider topologies in a lab environment. Built on KVM using OpenStack, this platform…

I have come across some interesting behaviour at the interface level with EIGRP. Dynamic By default many people use the network command to form a neighbor with EIGRP. This involves sending Hellos to 224.0.0.10 or FE02::A at the default interval…

When building a topology within Cisco VIRL it is a good idea to familiarise yourself with the file structure. If you’ve been exposed to XML and Cisco config files before (I would hope ALL of you would have) then nothing…

Cisco VIRL allows administrators and network engineers to build network topologies rapidly and validate a variety of use cases on a virtual platform. Superb for change and even better when considering traditionally this used to require physical equipment or ‘guestimation’.…

Cisco Virtual Internet Routing Lab (VIRL) is a platform that allows administrators and developers the ability to test changes, new technology, or try new architectures in a safe lab environment. This is a fantastic tool for studying the CCIE. It…

I have been configuring a rather large topology within my GNS3 environment of late and it is composed of many peers. At this stage I had a plethora of peelings up. The diagram below highlights a small subset of a…

As announced last month and quickly covered off by this post, Cisco announced the evolution of the ASA 1000v, the ASAv. There is no longer a requirement on Nexus 1000v. I have a variety of technology in my lab for studies. For…

The other day marked a pretty big security release for Cisco. For a long time the Cisco ASA has been a physical firewall and recently evolved to a Virtual Appliance known as the ASA 1000v. The problem with this Virtual…

Cisco CCIE v5

As the news spreads the internet and as many people waited and speculated Cisco released the blueprint for the CCIE routing and switching version 5! This is one of the biggest steps forward in my opinion of the CCIE in…