IP explained

IP explained

Review of IPV 4

  • 32 bits
  • this 32 bits are divided in to 8 sections such as 32 / 8 = 4.

Review of IPV6

  • 128 bits



  • undecillion

  • Leading zeros can be dropped (2134::AD1:..)

  • :: can be used to represent collection of zeros (o:O:o)

classless inter demain Routing Notation (CIDR)

  • half of the possibilities cut down when leading bit is increased by 1.


In this figure, upper part shows the \(2^{16}\) possible ip address and the bottom part shows the \(2^{8}\) which is the smallest.

  • For example in the Aws VPC subnets largest is 16 and smallest range is 28.

Private Network Ranges

  • As a standard 8, 12 and 16 Leadiing bits are reserved for the internal used.

  • 10.0.0.0 to 10.255.255.255 for 10.0.0.0/8

  • 172.16.0.0 to 172.31. 255.25 for 172.16.0.0/12

  • 192.168.0.0 to 192.168.255.255 for 192.168.0.0/16

Comments

Post a Comment

commented your blog

Popular posts from this blog

How To: GitHub projects in Spring Tool Suite

Image
The first step is sign up in the GitHub and create a  new project. For example I’ve created a new project Spring3part7 in the GitHub. Before add the projects you need to configure STS for GitHub access. For example, you need to add configuration as shown in the following picture Git local repository also important Now you are ready to pull the project from the GitHub, in the STS import menu select the following Now type the project name and click the ‘Search’ as shown in the following. However, when you select the found project click ‘Finish’ nothing will change in the STS interface. Now you are going to create real project. Here I am going to create simple utility project. This template project need to be created inside the imported GitHub project You have to give the same project name of the GitHub project as shown in the following project Now your project is ready to push. Before that you need to add ignore flag to all the folders and files except pom...
Continue »

Spring 3 Part 7: Spring with Databases

Image
This is the 7 th part of the Spring 3 Series . Create MySQL 5.6 database ‘payroll’, CREATE DATABASE payroll; Next create a user for example, user ‘ojitha’ CREATE USER 'ojitha'@'localhost' IDENTIFIED BY 'ojitha'; Need to grant the ‘payroll’ access to user ‘ojitha’ as shown in the following. GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP ON payroll.* TO 'ojitha'@'localhost'; You can download freeware of TOAD for MySQL from here . Let create a first table, that contains all the states in Australia. You can create a table using visually using the icon given directly below the Tables tab in the Object Explorer as shown in the above diagram. CREATE TABLE payroll.STATE ( CODE CHAR(3) ASCII COMMENT 'State code', STATE VARCHAR(30), PRIMARY KEY (CODE) ) ENGINE = InnoDB COMMENT = 'Australian states' ROW_FORMAT = DEFAULT; In the my sql console you can the newly added table using the following command SHOW ...
Continue »

Parse the namespace based XML using Python

In this blog, I am considering how to parser and modify the xml file using python. For example, I need to parser the following xml 1 (slightly modified for this blog) and need to write the modified xml to out.xml file. Here the country.xml <?xml version="1.0"?> <actors xmlns:fictional="http://characters.example.com" xmlns="http://people.example.com"> <actor type='T1'> <name>John Cleese</name> <fictional:character>Lancelot</fictional:character> <fictional:character>Archie Leach</fictional:character> </actor> <actor type='T2'> <name>Eric Idle</name> <fictional:character>Sir Robin</fictional:character> <fictional:character>Gunther</fictional:character> <fictional:character>Commander Clement</fictional:character> </actor> </actors> In ...
Continue »