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This is a straightforward no nonsense Subnet Calculator. It does however allow you to pull up the subnet information you have been working on in the iPhone Todays Widget View. This means that the subnet information is just a slide away.

Developed my me. Now Available
Recent posts

VMWARE ESXi 5.0 Command line quickies


It has been a long time since my last posts, but recently I have been working on my home ESXi lab so I thought I would share.

I switched over to using Apple Mac just over a year ago, so I don't have a windows machine running by default to run the vSphere client software and generally all I want to do is startup VMs and switch off the ESXi server when I am done. I did some searching and found that I could use vmware vim-cmd if I SSHed into the ESXi server. This need to be enabled at the console, then you can use putty or your tool of choice to connect.

Anyway there are several commands the following to me are most useful.

List all Virtual Machinesvim-cmd vmsvc/getallvms

Get a Virtual Machines state (on/off etc)vim-cmd vmsvc/power.getstate

Power on a virtual machine
vim-cmd vmsvc/power.on

Combining command to a one liner you can find out the power on state of all Virtual Machines
vim-cmd vmsvc/getallvms && for x in `vim-cmd vmsvc/getallvms| grep vmx-0 | awk '{print $1}'…

Where are all the AAA and PKI solutions gone for Dot1x

More Question than answers
(This series will be based on an enterprise with >20,000 dot1x devices)

I have been looking into dot1x authentication for Wired and Wireless devices based on device identity using x.509 Certificates. While I understand PKI, AAA, PEAP and sorts I had never really had the opertunity to bring these technologies together. I quickly found out that despite this stuff being around for years,  it was difficult to answer the following questions:

Which PKI solution should I use?
Which AAA solution should I use?
How to setup the PKI solution?
Does the PKI server need to be part of AD?
What if the clients are not in AD e.g. Wireless Tablets?
How do I issue certificates for devices?
How to configure the devices (wired and wireless)?
What AAA server do I use?
How do configure the rules and policies and identify clients?

What are the answers?
I am going to kick off a series here at that tries to address the question above; I have limited time but hopefully I can …

Subnet Master Demo for Android

I thought I would challenge myself to write a mobile app. I personally have an iPhone, but didn't want to invest in a MAC to develop an application and then having it rejected by apple. So I opted for and android based app. I had a look around at the subnet calculator market and though I could do a better job. So here is my effort

All the coding was done over a few weekends. There are still lot of refining required, but I feel it is ready for a beta release.

From IOS to Junos – JNCIA Result - PASS

I done the exam, and I am please to say I passed. So the lab-ing and the two PDFs


And a bit of surfing the web were enough. That is not to say everything in the exam was familiar, I did have to think seriously about some questions which puzzled me.
So the next step will be to go for specialist, but because of workload, it's going to take a little longer that 15 Days.

From IOS to Junos – Final Day – Part 5 (Services)

It's a Wrap
This is the last on this series, it has been hard work fitting in the time (very late evenings) and frustration trying to dump my notes into wordpress. I need to do more reading before the end of the week as I have booked the JNCIA-Junos exam. The start of the Journey has been interesting, and I hope to reach my first mile stone JNCIA-Junos, then I decide if I can go much further with the resource I have at my disposal.

Services and Users Part

I had some issues getting NTP synced on the last video, I eventually worked it out so here is the final installment.

Final word
That me finished this series, I hope people find to useful, I know I have found it of great value albeit a tiring one.