Compilation of Study Notes
Quick one here: I was getting an issue the installing packages on Raspbian which I can easily occur elsewhere. This was a very sore, abused, and then neglected Raspberry Pi! [email protected] ~ $ sudo apt-get update Ign:1 http://deb.debian.org/debian stretch InRelease…
I was working in the lab and I had installed a fresh vCenter 6 Server Appliance into my lab. I seized the hosts from a previous install. What remained was an old installation of NSX (Manager had previous been attached…
This post outlines how to add routes to a Neutron router. The outcome of this post will allow the jumphost to access VMs and networks advertised behind the SRX. Working on my lab environment I have some server infrastructure and jump…
Creating a Neutron port and attaching to an Instance This post will demonstrate the flexibility of creating a new port on a Neutron network and attaching it to an existing Instance. The Instance this port is attaching to is a…
So to put it quite bluntly I am no vSphere master. Give me a network DMZ design and let me loose. Enterprise network edge? Ace. BGP? No worries. I am learning my doing (see breaking) my lab in Singapore at…
Having spent a bit of time on VMware’s NSX platform I decided I would take the next step up the certification path. I sat the VMware advanced exam – VMware Certified Implementation Expert Network Virtualisation – VCIX-NV. I was quite…
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…
I uploaded some themes to my wordpress install for my blog recently. What I found was that the wordpress theme failed to read the stylesheet.css. This was frustrating and then I thought about the error. Read. File permissions. Linux. So…
Cisco VIRL is a learning platform which allows you to run real devices. It is built on an OpenStack architecture that allows rapid deployment of instances of NX-OS, IOSv, IOS-XE ASA and vSRX. I am going to show you the…
SPARK : CCIE RS v5 certification guide ROUGH CUT I am currently working on my CCIEv5 RS. The new blueprint change has added some good new information and removed obsolete technologies from the test. The rough cut of the new…
Cisco VIRL : Terminal Mutliplexing There is a built-in console with VIRL. It allows access to the CLI of the network devices that you deploy so you can administer them. In previous build there were some clicky click features. Due…
My study method Approach It is well-known with the content on this blog that I am still working toward my CCIE. With that you need a structured approach. This isn’t a walk in the park and understanding the path ahead…
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…
Adopting the Pomodoro Technique Using my time better For a while now I have been looking to work more efficiently. I am a fan of tasks and lists. I have been using OmniFocus for a while and have been a…
Key chain rotation with EIGRP named mode Here is a simply topology as per the CCIE RS material provided by INE. The DMVPN network is used a lot within the many examples and demonstrations to learn technologies due to the…
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…
I have uploaded and attached the VIRL file I have made for my studies. It is the ground floor topology that allows potential CCIEs like yours truly to get their hands dirty. To be used in conjunction with the INE…
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…
Working through OSPF and MPLS recently I came across an interesting concept. I built out a simple MPLS cloud and had one customer joining two sites across it. The goal was to connect it over MPLS and leverage OSPF for…
Here is the Juniper flavour of the FQDN access-list. The policy used references the dns-name and creates policy destination addresses accordingly. It is important, as noted in the optimisation and initial ASA FQDN configuration post, that you have a set…
Many are aware I am working on my CCIE. I currently have the written exam lined up and in might sights. Given my enterprise background there are quite a few technologies in which I do not get to deploy quite…
I have covered a deal of topics across JUNOS but now it is time to look at switch traffic capturing. It is possible in IOS with some simple monitor commands and it is rather straight forward on JUNOS. Now, I…
So what is DHCPv6 client mode and why can this help me? A while back Ivan Pepelnjak commented on the blog asking if the SRX had DHCPv6 client features such as IA_PD and IA_NA. Now as of version 12.1×45-D10 these…
The last couple of weeks I’ve spent some time dealing with a little adversary. The Cisco CCNP has been a want for a while and I started the quested and my pace did slow off. Well finally I made it…
I have managed to get the QEMU version of ASA running inside Ubuntu 12.04. Previously I have installed this on Windows and OSX. The trifecta will be complete with this post with the ASA running inside Ubuntu. Similar to the…