AULDERAN VLOG

Sunday, March 17, 2013

Geek Out Sunday !!

"Geek out Sunday" is a new segment we are putting together for the Aulderan daily Vlog where we post one item or thing every Sunday that speaks completely and total Geekinese !!

This weeks Geekinese post is my own personal Nintendo controller belt buckle Pick one up today, they are awesome!!

Plantronics Voyager Legend Bluetooth

End time: Mar 18, 2013, 5:55:25 PM EDT

View item:
Plantronics Voyager Legend Bluetooth

Sent from my iPhone

Sena Magia Leather wallet for iPhone 5 -Brown

End time: Apr 8, 2013, 4:18:18 PM EDT

View item:
Sena Magia Leather wallet for iPhone 5 -Brown

Sent from my iPhone

Friday, March 15, 2013

Aulderan Vlog 010 - "An Apple TV a day keeps the Dr away"!

My iPad case is from "Zero Gravity"
http://www.touchzerogravity.com/

Follow me on Twitter @aulderan

Email: aulderan@gmail.com aulderantechservices@gmail.com
Check out our VLOG blogspot:
http://aulderan.blogspot.com

Chris Pirillo at. Http.//Chris.pirillo.com

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Thanks a lot for watching don't forget to subscribe and comment below and check out all the other links here in the description and stay tuned for more videos.

Me and Roger at Bass Pro Shops

Tuesday, March 12, 2013

Aulderan Vlog 009 - Info updates etc. PT 1

Follow me on Twitter @aulderan

Email: aulderan@gmail.com aulderantechservices@gmail.com
Check out our VLOG blogspot:
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Chris Pirillo at. Http.//Chris.pirillo.com

The VLOGGER Fair website and info:
http://vloggerfair.com

Thanks a lot for watching don't forget to subscribe and comment below and check out all the other links here in the description and stay tuned for more videos.

Wednesday, March 6, 2013

Aulderan Vlog 008 "In the News" PT 4

Part 4 of 4 - I attempt to read the news in the tech world. I get a little help from my kids. Enjoy. !!

Jazz tablets "Android" running ICS
Find them here on sale:
http://www.officedepot.com/a/products...

My iPad case is from "Zero Gravity"
http://www.touchzerogravity.com/

Follow me on Twitter @aulderan

Email: aulderan@gmail.com aulderantechservices@gmail.com
Check out our VLOG blogspot:
http://aulderan.blogspot.com

Chris Pirillo at. Http.//Chris.pirillo.com

The VLOGGER Fair website and info:
http://vloggerfair.com

Thanks a lot for watching don't forget to subscribe and comment below and check out all the other links here in the description and stay tuned for more videos.

Aulderan Vlog 008 "In the News" PT 3

Part 3 of 4 - I attempt to read the news in the tech world. I get a little help from my kids. Enjoy. !!

Jazz tablets "Android" running ICS
Find them here on sale:
http://www.officedepot.com/a/products...

My iPad case is from "Zero Gravity"
http://www.touchzerogravity.com/

Follow me on Twitter @aulderan

Email: aulderan@gmail.com aulderantechservices@gmail.com
Check out our VLOG blogspot:
http://aulderan.blogspot.com

Chris Pirillo at. Http.//Chris.pirillo.com

The VLOGGER Fair website and info:
http://vloggerfair.com

Thanks a lot for watching don't forget to subscribe and comment below and check out all the other links here in the description and stay tuned for more videos.

Aulderan Vlog 008 "In the News" PT 2

Part 2 of 4 - I attempt to read the news in the tech world. I get a little help from my kids. Enjoy. !!

Jazz tablets "Android" running ICS
Find them here on sale:
http://www.officedepot.com/a/products...

My iPad case is from "Zero Gravity"
http://www.touchzerogravity.com/

Follow me on Twitter @aulderan

Email: aulderan@gmail.com aulderantechservices@gmail.com
Check out our VLOG blogspot:
http://aulderan.blogspot.com

Chris Pirillo at. Http.//Chris.pirillo.com

The VLOGGER Fair website and info:
http://vloggerfair.com

Thanks a lot for watching don't forget to subscribe and comment below and check out all the other links here in the description and stay tuned for more videos.

Aulderan Vlog 008 "In the News"

Part 1 of 4 - I attempt to read the news in the tech world. I get a little help from my kids. Enjoy.

Jazz tablets "Android" running ICS
Find them here on sale:
http://www.officedepot.com/a/products...

My iPad case is from "Zero Gravity"
http://www.touchzerogravity.com/

Follow me on Twitter @aulderan

Email: aulderan@gmail.com aulderantechservices@gmail.com
Check out our VLOG blogspot:
http://aulderan.blogspot.com

Chris Pirillo at. Http.//Chris.pirillo.com

The VLOGGER Fair website and info:
http://vloggerfair.com

Thanks a lot for watching don't forget to subscribe and comment below and check out all the other links here in the description and stay tuned for more videos.

How To Request from Viewer:

Per Request from a viewer of my Vlog and twitter follower:

Wanted to know my take on Subnetting Basics.

Check out this quick old blog entry from a few years ago.

Thanks again and enjoy, and don't forget to Subscribe and Follow us and like my videos ! - James @ Aulderan Vlog.

Quick and Dirty Subnetting

I can’t emphasize enough the importance of being able to calculate subnets on the fly when working with Windows, particularly for designing your Active Directory site structure.

If you know the principles and theory behind subnetting and can

convert binary numbers to decimal and decimal to binary, you may

find this very short summary of how to perform subnetting useful.

For people who work with IP addressing and routing as part of

their jobs, subnetting or supernetting becomes second nature.

For them, it is a fairly easy thing to calculate subnets. A

lot of people who are new to networking or relatively

inexperienced with TCP/IP often and wrongly think that performing

subnetting is a mysterious and difficult task. I remember the

frustration I felt many years ago when, as an inexperienced

network admin, I could not get anyone to give me a good

explanation of subnetting.

Some of the more experienced network administrators, in fact, refused to explain it to me. I don't know if they were protecting their jobs or what, but it did seem to me at the time that they were going out of their way to create a false aura of mystery and difficulty concerning subnetting.

The truth is this: calculating subnets is fairly easy and doesn't

require that you memorize anything except a few general

principles and know how to work with binary numbers. The purpose

of this short explanation is to provide you with the minimum

amount of information you have to carry around in your head in

order to calculate subnet (or supernet) masks in any situation,

an exam, your job, etc.

Some rules to remember:

1) The network portion of the IP address described by the

extended subnet mask cannot be expressed as all 0s or all

1s. (The validity of this rule depends on a number of

factors such as the type of hardware and the routing

protocol in use.) So, for example, let's assume we have

extended a Class B network by borrowing two bits from the

host portion of the address thus: 172.16.0.0/18. The

subnet mask is 255.255.192.0 or

11111111.11111111.11000000.00000000.

Any combination of 0s and 1s in the 3rd octet could

possibly comprise a network ID. However, following our

rule of not allowing all 1s or all 0s in the positions

covered by the extended subnet mask, we get the following

valid network IDs in the 3rd octet:

00000000 = 0 Not a valid network ID (all 0s)

01000000 = 64 Valid network ID (172.16.64.0)

10000000 = 128 Valid network ID (172.16.128.0)

11000000 = 192 Not a valid network ID (all 1s)

2) The host portion of the IP address cannot be expressed as

all 0s or all 1's. All 0s in the host portion of the

address indicates the Network ID. All 1's in the host

portion of the address indicates the address for the

broadcast on the subnet. Therefore, using our example

above, here are the valid host IDs for our two valid

subnets 172.16.64.0/18 and 172.16.128.0/18:

172.16.64.1/18 – 172.16.127.254/18

172.16.128.1/18 – 172.16.191.254/18

To understand the rule more clearly, convert the host

addresses to binary:

64 1 127 254

x.y.01000000.00000001 – x.y.01111111.11111110

128 1 191 254

x.y.10000000.00000001 – x.y.10111111.11111110

3) To calculate the number of hosts or the number of networks

for a given subnet mask, use the following formula:

2^(number of bits used) – 2 = number of networks/hosts

(The '^' means 'raised to the power of'.)

So, given the fact that we have borrowed 2 bits to extend

our network, we have 2^2 – 2 = 2 networks (remember, we are

excluding the all 1 and all 0 networks).

We have 14 bits left to describe the hosts on each network;

therefore we have 2^14 – 2 = 16,382 hosts per network

(remember we are excluding host addresses with all 0s or

all 1s).

4) The value of the lowest order bit in the subnet mask tells

you two things: a) it tells you the first network ID for

the subnets created by the extended subnet mask, b) it

tells you the value that you can add to one network ID to

arrive at the next possible network ID.

Let's take our example extended subnet mask of

255.255.192.0. The 3rd octet expressed in binary with the

decimal equivalents is

128 64 32 16 8 4 2 1

1 1 0 0 0 0 0 0

The value of the lowest order bit is 64. Therefore, our

first network ID is 172.16.64.0/18. The next and last

network ID is 172.16.128.0/18 (64 + 64 = 128)

To help you calculate subnet masks, you might want to memorize

the following table.

Subnetting Table

128 64 32 16 8 4 2 1

1 1 1 1 1 1 1 1

| | | | | |

192--| | | | | |

224-----| | | | |

240--------| | | |

248------------| | |

252---------------| |

254------------------|

To use the table, find the value for the subnet mask. Let's

say you are subnetting a Class B address with the subnet mask

255.255.248.0. Find 248 on the chart and follow the lines to

determine the low order bit for the subnet. The value for the

low order bit for 248 is 8. That tells you two things: the

starting network ID and the difference between one network ID

and the next: 8. Therefore, given a class B address of

172.16.0.0/21 (subnet mask of 255.255.248.0), the possible

network ID's and host ranges are

Network IDs Host Ranges

172.16.8.0/21 172.16.8.1 – 172.16.15.254

172.16.16.0/21 172.16.16.1 – 172.16.23.254

172.16.24.0/21 172.16.24.1 – 172.16.31.254

. . . .

172.16.240.0/21 172.16.240.1 – 172.16.247.254

To determine the number of networks created by the subnet

mask, count the number of bits used for the subnet mask. For

a subnet mask of 248, the number is 5 bits. Therefore, the

number of networks is 2^5 - 2 = 30. To determine the number of

hosts, count the remaining bits. For a subnetted Class B

address with a subnet mask of 255.255.248.0, we have 3 + 8 =

11 bits remaining. Therefore, we can have 2^11 – 2 = 2046

hosts per network.

So, to sum up, memorize the Subnetting Table above and the

following rules:

1. You can't have all 0s or all 1s in the host or network

portion of the address (unless the hardware and software

support it).

2. To determine the number of networks or hosts, use the

formula 2^(no. of bits used) – 2.

3. The low order bit in the subnet mask determines the

starting network ID and the difference between possible

network IDs.

That's it. The first thing I do when I go into an exam

situation where I know I am going to be asked about subnetting

is to draw out the subnetting table on a blank piece of paper.

you will find that you need to be able to

calculate subnets quickly and accurately. I have found this

quick method to be helpful, I hope you do too.

Good Luck to everyone hope this helps.!

Posted by: James @ Aulderan Vlog- "We make technology simple for everyone."

AULDERAN VLOG

Sunday, March 17, 2013

Geek Out Sunday !!

Plantronics Voyager Legend Bluetooth

Sena Magia Leather wallet for iPhone 5 -Brown

Friday, March 15, 2013

Aulderan Vlog 010 - "An Apple TV a day keeps the Dr away"!

Me and Roger at Bass Pro Shops

Tuesday, March 12, 2013

Aulderan Vlog 009 - Info updates etc. PT 1

Wednesday, March 6, 2013

Aulderan Vlog 008 "In the News" PT 4

Aulderan Vlog 008 "In the News" PT 3

Aulderan Vlog 008 "In the News" PT 2

Aulderan Vlog 008 "In the News"

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