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Network & Infrastructure Blogs

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Published: 2017-01-17T08:55-07:00


It has been a while

Sat, 07 Jan 2017 09:57:17 GMT

I am back finally

What is the fscking thing doing?

Fri, 30 Dec 2016 07:00:05 GMT

Having been into computers since I first (and probably the rest of the world too) heard of them there is one thing that has always been constant. When the computer is busy doing something you would always know that it is busy and you could be patient and wait for it to finish doing what it is doing and be ready for more input (more input for number five).


In the older model

What exactly will the singularity be?

Thu, 29 Dec 2016 14:22:10 GMT

Unless you have decided to emulate an ostrich and stick your head in the sand then you have most probably heard of the singularity  (which by the way I think would be a good movie, royalties to be sent to me please).


If or when the singularity comes and the T101 comes back to prevent it happening we will have an intelligence with the potential to surpass our own.



The future of programming

Thu, 29 Dec 2016 09:44:35 GMT

Computers or rather the operating systems running those computers seem to be getting smarter every day. They can do more things and a lot of those things are automated so the end users do not have to think about it.


This is not due to the increase of hardware capacities although the hardware does play a part into it. This is due to the programmers behind those operating systems

The world is not worse, just better documented.

Wed, 28 Dec 2016 15:52:04 GMT

For a lot of my friends and acquaintances as well as the general comments I have been reading on the interweb tubes there is the same sort of feeling or opinion.


That feeling or opinion is that this year has been a very bad year and is much worse than the previous years. That may not necessarily be true. What may be true is that this year and the previous years seem to be

Connecting through technology.

Wed, 28 Dec 2016 06:54:10 GMT

If you are a long time reader of this blog then you will know that I live in a different country to the rest of my family. I think that there are probably many who do. If not a different country then a different city, block, street or even house.


What ever the reason and no matter what the distance it can be important to our well being to be able to keep in contact with our

I want the power!

Tue, 27 Dec 2016 15:26:11 GMT

First of all I want to express my dismay and condolences for the family, friends and fans of Carrie Fisher. May she rest in peace. 


There is one piece of technology which rules our lives. It is not the telephone or television but the humble battery. These power producers are in just about everything we have around us. If you have a computer (duh!) even a desktop model

Did Cyanogenmod take cyanide?

Tue, 27 Dec 2016 07:40:44 GMT

You may have heard about the news already and it has been trashed to death on many other blogs and articles so I am not going to go into it much now.


If you haven't heard then the tldr version is that the alternative android operating system called cyanogenmod has closed up shop.


What I am going to talk about is how and why I think this happened.



The internet is the mirror of our souls

Mon, 26 Dec 2016 14:42:46 GMT

In many religions there is the concept of the soul. The soul is supposed to be the essence of us which is immortal and moves on to another realm after the physical body is no longer viable. They say it is the soul which defines us and is the seat of our intelligence, our feelings and is what makes us human. Some also say that animals do not have a soul while some say that animals do have a soul.



Does Apple purposely do this?

Mon, 26 Dec 2016 09:49:35 GMT

I am somewhat ashamed to say that I use an apple computer at work. Even though a lot of the time I am in a virtual machine for programming other operating systems I need the actual apple hardware in order to legally publish applications for the apple store.


Just recently I also needed the ability to do programming for apple operating systems at home so I went out and bought

Twas the night before Christmas

Sat, 24 Dec 2016 07:38:23 GMT

Twas the night before Christmas and all through the house not a creature was stirring, not even a mouse.


The screens were all dark and the power switched off for everyone was dreaming pleasantly in the land of nod.


Under the tree there were boxes galore, xboxes, playstation boxes, phone boxes and more.


Just about everything which

Sending Datagrams to IP

Sat, 24 Dec 2016 00:02:03 GMT

When an IP datagram arrives over a network, device driver code in the network interface layer must deposit it on the appropriate queue for IP. To do so, it calls ip_in.

Byte-Ordering In The IP Header for TCP/IP

Fri, 23 Dec 2016 23:57:32 GMT

To optimize processing time, our code stores all IP addresses in network byte order and does not convert address fields in protocol headers. Thus, the code only converts integer fields that do not contain IP addresses.

IP Software Organization & Datagram Flow Part 3

Thu, 22 Dec 2016 22:09:15 GMT

Directed broadcast includes both gateways and hosts on the destination network, even if one of those gateways is responsible for forwarding the datagram onto the network.

IP Software Organization & Datagram Flow Part 2

Thu, 22 Dec 2016 21:56:15 GMT

When all input queues are empty, the IP process blocks in a call to procedure ipgetp. Once a datagram arrives, the IP process resumes execution and immediately examines the interface on which the datagram arrived

IP Software Organization & Datagram Flow

Tue, 20 Dec 2016 21:50:39 GMT

The IP code that chooses a datagram to route implements an important policy ? it decides the relative priorities of datagram sources.

Getting to Advanced Chatbot Functionality

Tue, 20 Dec 2016 15:23:10 GMT

There are a lot of other next-generation capabilities that need to be developed in the chatbot space, but these two will be the biggest leaps to making chatbots and virtual assistance more usable in the future.

IP Software Design

Sat, 17 Dec 2016 23:01:12 GMT

To keep the IP software simple and uniform, our implementation uses three main organizational techniques:

IP: Global Software Organization

Sat, 10 Dec 2016 16:22:16 GMT

Conceptually, IP is a central switching point in the protocol software. It accepts incoming datagrams from the network interface software as well as outgoing datagrams that higher-level protocols generate. After routing a datagram, IP either sends it to one of the network interfaces or to a higher-level protocol on the local machine.

ARP Initialization and Configuration Parameters in TCP/IP

Thu, 08 Dec 2016 23:01:24 GMT

When building ARP software, the programmer configures the system by choosing values for parameters such as:

Managing the ARP Cache in TCP/IP

Wed, 07 Dec 2016 23:24:57 GMT

When allocating space for a new addition to the ARP cache, choose an unused entry in the table if one exists. Otherwise, delete entries in a round-robin fashion.

I C U C Robot C

Wed, 30 Nov 2016 03:12:24 GMT

One thing I have always been fascinated about with robot or indeed any technology is vision. In the animal kingdom there are a few different visionary systems and there is a lot of variation between those systems.


Our own eyesight, while seemingly good for us can be rather pitiful when compared to other animals like birds or bees (they can have sharper vision and see more

Diamonds are powerful

Tue, 29 Nov 2016 14:44:48 GMT

When you get a diamond for your significant other it can really charge up your relationship. Hopefully ending up with a very nervous walk down an isle and people throwing dried food at you. Then you end up throwing away a bunch of flowers and people will fight to save those flowers from an untimely death by trampling.


For a hunk of carbon atoms in a crystalline form diamonds

Robots in our image.

Tue, 29 Nov 2016 03:56:02 GMT

Lets face it. Out of the whole animal kingdom we are probably rank among weakest and least fearsome of the mammal family. Our defence mechanisms are pretty much non-existent. Our teeth are pretty much useless except for chowing down on a juicy burger and our nails bend and break at the slightest bit of pressure. Our muscles are weak and our skin is soft and easily damaged. In short the only thing

Will AI have morals?

Mon, 28 Nov 2016 14:47:07 GMT

In todays fractured world there is one thing which everybody seems to agree on. We will, sooner or later, reach the singularity and an artificial intelligence will come into existence.


There are several countries which are working as hard and as fast as they can to bring about this singularity. The latest I know of is Japan where their latest super computer is pretty much

Whatever happened to the three R's?

Mon, 28 Nov 2016 05:48:53 GMT

When I was a little tacker and had to go to school (mostly to be bullied because of my pocket protectors) we had to learn the three R's. That is reading, writing, and arithmetic. Of course those words don't start with "R" but phonetically they do.


Yet it seems that as technology has become more a part of our lives so has the ability to communicate in a proper manner reduced

Computers, the silent killers 2

Sun, 27 Nov 2016 13:42:39 GMT

I my previous post I mentioned how computers are silent killers and one of the ways they are killing us is that we are sitting for long hours in front of them which increases the risk of blood clots. Which is exactly what happened to me.


That is not the only way that computers kill us however. They also increase our risk of going blind and having heart attacks. We can also

Too much technology for our needs

Sun, 27 Nov 2016 06:02:33 GMT

As you probably have noticed we are surrounded by technology. It has wormed itself into every single part of our lives and quite frankly we cannot do without it.


However, technology has improved quite drastically in recent decades and I think it has improved to more than what we actually need. At least for our personal daily technology stuff.


Now I am

Computers, the silent killers

Sat, 26 Nov 2016 11:59:31 GMT

Computers are the worlds most prolific killer. We may not know it and there may be no statistics or scientific studies to verify this but let me tell you this. Your computer is slowly killing you. It is taking years off of your life and the worst thing of all? You are letting, no, actually encouraging this killer to do its dirty deeds.


Right now, at this very minute. While

ARP Input Processing in TCP/IP

Thu, 24 Nov 2016 23:03:52 GMT

ARP input processing uses two utility procedures, arpadd and arpqsend. Arpadd takes information from an ARP packet that has arrived over the network, allocates an entry in the cache, and fills the entry with information from the packet. Because it fills in both the hardware and protocol address fields, arpadd assigns AS_RESOLVED to the entry's state field. It also assigns the entry's time-to-live field