Network security experts are Industry's demand in next era not just certified with basic knowledge.

We are dedicated network expert team specialized in designing, implementation and training the aspirants in computer networks.

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IPv6 (Internet Protocol version 6)

Tuesday, May 29, 2018

IPv6 (Internet Protocol version 6)

IPv6 is one of the most appear technologies in networks. IPv4 addresses are almost
 disabled and, as such, a new and better solution is needed. IPv6, which is the ending 
chapter of this  CCNA training in Chandigarh, we will look at the concepts disabled
 this protocol, we will learn why there is a need for IPv6 that will be pursue by the
 configuration of IPv6 addresses according to the requirements of the net. We'll finish
 looking at IPv6 routing using OSPF and we'll see how it differs from OSPFv2.
CCNA Training in Chandigarh

What is IPv6 and why is it important?

Let’s talk about the use of IPv4 and we said that the IPv4 address space provides
 approximately 4,294,967,296 unique addresses. Of these, only 3,700 million 
addresses are assignable because the IPv4 addressing system separates 
addresses into classes and reservation addresses for multi casting, testing and 
other specific uses.IPv4 addresses are almost exhausted and this is due to the
 increased use of the Internet; the number of devices with which one can use
 the Internet these days is many; Smartphones, tablets, laptops and other 
devices can now access the Internet. Even with NAT, the rapid growth of
 the Internet is leading to the depletion of IPv4 addresses. Learn IPv6 and its 

Advantages of IPv6

As you can see in the following table, the use of IPv6 provides so many functions
 and possibilities that were previously not available in IPv4.
Advantages of IPv6

Types of IPv6 addresses

An IPv6 address will be one of the following types. Some will be familiar, but there
 is also a new one.

Unicast: an IPv6 unicast address is the same as an IPv4 unicast address; it is an IP 
that is assigned to an interface on a host. It can be the source of an IP packet or the 
destination of one. A packet sent to a unicast address goes to the only host with 
that address.

Global Unicast: A global unicast IPv6 address is the equivalent of a registered public
 IP address. They are IP routable by Internet, registered worldwide and must be leased
 from an ISP.

Single Local: equivalent to a private IPv4 address; not registered with an ISP and not
 rout-able by Internet.

Local link: each IPv6 interface is granted a local link address. The address range is 
FE80 :: / 10, and it generally combines this prefix with the last 64 bits in EUI-64 format.
 It is more or less equivalent to the address range of the automatic private IP address 
(APIPA) of

Multicast: As in IPv4, a single IPv6 multicast address is assigned to multiple hosts 
so that a packet sent to the address can be delivered to several hosts more or less
 at the same time. IPv6 multicast addresses always start with the prefix FF00 :: / 8.

Anycast: an anycast address is a single address that is assigned to multiple hosts. 
This is multicast, omitting that a packet for the IP address will be provided to the 
nearest one according to the distance of ​​the routing protocol. There is no special 
prefix for anycast addresses.

CCNA Training in Chandigarh is the best place to learn networking and Become
 an Certified networking engineer.  

Basic networking concepts

Tuesday, November 7, 2017

What is Networking?

A network consists of one or more systems that are connected to share resources.The networking computers shares information such as email, file, documents and resources such as printer, internet and disk storage.

CCNA training in Chandigarh

There are Two common type of network include:-
  1. Local Area Network (LAN)
  2. Wide Area Network (WAN)

Local Area Network

A Local Area Network  is a network that is restricted to limited  area. Computers connected to a network are broadly differentiate as servers and  workstations. Servers are mostly not used by human beings directly, but rather run regularly to provide services to the other computers on the network. Service contribute can include printing and software hosting, file storage and sharing messages, data storage and retrieval .

Wide Area Network

Wide Area Networks connect networks in larger geographic areas. Dedicated different cabling and satellite up links may be used to connect this type of global network.. A WAN is complicated network . WAN uses multiplexers, routers and bridges to connect local and metropolitan networks for over all communications networks. However, a WAN will not appear to be much different than a LAN.To learn More about networking  you can go through CCNA Training in Chandigarh.

Requirement of Networking

Every network requires specialized hardware and software to make them work. Following are the essential components for network:

Client computers

The User devices that uses to access the shared resources. Usually they run desktop version of OS such as Window 10, Window 7, and Window XP. Client computers are also known as workstations.

Server computers

Computers that provide shared resources. Usually they run server version of operating system such as Window Server 8 or 2003, Linux and NetWare. Server computers run many functional services to control the shared resources.

Network interface card

Network interface card  is an interface that empowers the computer to communicate over the network. Every computer must have a network interface card in order to connect with the network. In previous time it was a separate card and need to be installed on motherboard. All modern computers have it as the essential part of motherboard.

Communication links

Communication links are physical media. Every computer network needs some sort of media to transmit the data.


When we have more than two computers in network, we cannot connect them directly. We need a mediator device that allows us to connect all computers together. Switches do this job happily. Each switch contains a certain number of ports. We can use an eight port switch to connect eight computers.


Router is an intermediate device that speaks all language of network. It makes communication between two different networks.

Benefits of Networking

Networking is all about sharing. Networking allows us to share three main things: information, resources and applications sharing .For More information go with CCNA Training in Chandigarh.

Information sharing

Networking makes it easy to share the information across the network. We can send or receive data files from other computers. We can communicate with each other in network via messaging application for example email service, chat service etc. We can store data in a centralized server for easy management.

Resources Sharing

Certain computer resources can be shared in the network such as hard disk, printer, scanner, modem etc. This allows us to track down the uses of resources. For example a network administrator can setup a printer server and share it in network. Then user can use printer server for printing. Now administrator needs only to monitor the print server instead of individual workstations.

Application Sharing

Application sharing is the most common in companies. Companies may have business application that needs to be update by several users. Sharing make it possible. It allows several users to work together on a single application.

I hope you understand the Basics of networking. To learn More about networking you can go through CCNA Training in Chandigarh

Learn More Topics from Packet tracer Itself

Wednesday, March 15, 2017

Hello friends,

Here in this article today, i am going to tell you some very intersting facts about Cisco Packet tracer i have learned in CCNA Training in Chandigarh. You must be having curiosity to learn as much as you can in CCNA. Some of the topics which are not in the CCNA Syllabus but you want to learn them can be learn from packet tracer itself. Are you excited to know how we can do it.

After installing Cisco Packet Tracer some of the folders by get installed in the C:/ Drive of the computer system. When you will go to the saved folder you can get more informative Cisco Packet Tracer files of the topology in which so many other technical practicals are performed. Either you are using Linux or Windows. In both operating systems you can find the same folder in which you can find the CCNA Practicals. These practicals are already performed and you also can get the commands which has been run in the routers and in the switches. You can retrieve all the configuration from the routers by which you can learn that how this practicle has been performed.

This is the folder in which you can see all the practical.

In windows you have to follow the path

C:\Program Files (x86)\Cisco Packet Tracer 6.0.1\saves

This is the path where you can find the topologies which is already configured and must be new to you. From them you can learn many more new thing in CCNA Training in Chandigarh.

Here in this image you can see the the folder in which you will find the Topologies.

When you will enter in this folder you will see some more folders in this folder. Those all folders are listed below.

  1. 6.2
  2. Linksys
  3. PC
  4. Router
  5. Security
  6. Server
  7. TCP_IP
  8. TV
  9. Voice_IPPhone
  10. Wireless

You can see these folders in the image given below.

These are the folders you can find in Saves folder in cisco Packet Tracer. Now when you click in these folders you will find the PKT file in it. These files will run in packet tracer and you can check the configurations of the practicals which has been performed in them.  

Along with all that you also can take CCNA Training in Chandigarh to become network Professional. CBitss Technologies is the best place from where you can get knowledge of CCNA as well as you can do Linux Training in Chandigarh. For more information you can contact @ 9988741983 or you can visit the official website

How to create clusters in Cisco Packet Tracer

Friday, March 10, 2017

In this article you will come to know about how you can make clusters in Cisco packet tracer. This the practical which will help you to merge up the big sized network in small area in packet tracer. Using this you can explore big network as well as you can implement all the practicalities in the scenario. I will try to explain you this by using screenshots. This is the best option i have ever seen in the packet tracer till now. Trust me it will be fun doing CCNA Training in Chandigarh. This is as fun as playing video games in your computers. Let see now how we can use the cluster option in Cisco Packet tracer and how you can make it done.

For example you have to create a big sized network scenario in you project like the image you can see below.

CCNA Training in Chandigarh

Now if you want to merge this big sized network into one cluster so that you can connect some more devices here in the working space you can use the option cluster you can see on the Cisco Packet Tracer. You have to select all the working devices and have to click on the New Cluster option. After clicking on this option your big sized network will be merged into small network virtually. You can see that cluster in below given image.

CCNA Training in Chandigarh 1

If you want to see the real network which it was in actual you just have to click on this cluster and then you can see it fully.

Now how you can get connected with the other cluster. Lets check it out.

To connect with another cluster you have to use custom wire. You should not use automatic wire to get connected with the other cluster. Lets see how you can get connected with them.   

CCNA Training in Chandigarh 3

Like this you can create a big sized network but with the advanced option which is creating clusters in the packet tracer. This can give you more space to create a big sized network in to the single screen of the packet tracer.

You also can do CCNA Training in Chandigarh to get skilled in CCNA. This live project based training can lead you towards the best career options and also can help you to become computer network expert.

For more information you can contact @ 9988741983 or you can visit the official website @  


Password Recovery of Cisco Router 2600

Friday, August 19, 2016

Having problem to login in router or forgotten password? This lab will tell you resetting the password modern Cisco routers from 2600 Series and later.

Now if you are not accessing you exac password you need to break it. Bellow given process can give you detailed idea to break password.

Step 1

Switch on router and wait till boot process will start. When boot process will start we need to break that booting sequence by pressing CTRL and PAUSE BREAK. This will lead you towards Rommon Mode.

System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)
Copyright (c) 2003 by cisco Systems, Inc.
C2600 platform with 262144 Kbytes of main memory

monitor: command "boot" aborted due to user interrupt
rommon 1 >


Routers have configuration register values which are 0x2102 which is default configuration register value and second is 0x2142 which also can be changed in Rommon mode.  In Rommon mode we need to change this value to reset password and for that commands are given bellow.

rommon 1 >confreg 0x2142
rommon 2 >reset
This reset command will reload router and will take you to the user interface mode with latest configuration register value.

Step 3

 Now when you are logged in to the router you need to do all the settings and configurations again what you have done previously or have to set passwords again.

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: n

Press RETURN to get started!

Router#copy start run
Destination filename [running-config]?
506 bytes copied in 3.868 secs (168 bytes/sec)
Cbitss#configure terminal
Cbitss(config)#enable secret NEWENABLEPASSWORD
Cbitss(config)#line con 0
Cbitss(config-if)#password NEWPASSWORD
Cbitss#copy run start
Destination filename [startup-config]?
Building configuration...


Erase NV RAM so that it will remove all previous settings and configurations from Cisco router. After erasing it again you need to set default configuration register value again.

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: n

Press RETURN to get started!

Router#write erase
Erasing the nvram filesystem will remove all files! Continue? [confirm]
Erase of nvram: complete

Router#configure terminal
Router(config)#config-register 0x2102

Now your router is accessible again.
We as Cbitss Technologies providing CCNA Training in Chandigarh... you can contact us @ 9988741983 

How to configure Standard ACL in Cisco Router

Thursday, August 18, 2016

ACL(Access Control List) is to secure your network by setting some rules on Cisco Routers. Here in ACL you can allow or deny the access of any network or a particular host. ACL has two types Standard ACL and Extended ACL. Here in this article we will start from Standard ACL and then will move to Extended. Let see the configuration of the Standard ACL .

Take one scenario or a network topology where we can implement Standard ACL.

In this Scenario we are going to block access of so that this host should not communicate with Server. We will do configuration on the router 2 which is connected to Server. Lest do configuration of Standard ACL...

Router2(config)#access-list 10 deny host
Router2(config)#access-list 10 permit any

After creating this ACL we need to apply them on inbound and outbound interfaces..

Router2(config)#int fa0/1
Router2(config-if)#ip access-group 10 in
These are the only command by which you can block this particular host to ping that server. Now your server is secure which is only accessible by 

For CCNA Training in Chandigarh You can contact us @ 9988741983


Wednesday, August 17, 2016


It became many years that IPV6 has released, but very less amount of people know about this. Many people even do not know that what is IPV6 and whats its purpose too. This article will introduce you with IPV6 and will tell you that what is the future with IPV6.
It is a set of rules which is used to governing the format of data sent over the Internet or network. This is the way how your information moves over the Internet.


Allows for 4 billion Internet Addresses for users
32 Bits Logical Addresse
This is no longer enough for all of the devices on earth
Designed in the late 70s, when the modern world of multiple wasn't fathomable. 

Allows for 340 trillion, trillion, trillion Internet Addresses
128 Bits Addresse
That looks like this: 340,000,000,000,000,000,000,000,000,000,000
Because of this every person on this earth can have billion of network addresses for their own devices.

More than 4 billion devices already share addresses. In future there are many device who gona use Ip addresses like watches, Fridges and cars will be needing IP Addresses.


How to configure SSH in Cisco Router

Saturday, August 13, 2016

Prepare one topology with the combination of Cisco routers and switches. Make sure your network is working properly. Now in topology you can configure SSH in any of the router you want.

Now if you have chosen router where you will configure SSH Start configuring it.

1. Set hostname and domain-name

Here are some commands to set hostname and Domain name for the router

# config t
(config)# hostname cbitss
(config)# ip domain-name

2. Generate the RSA Keys
Router should have RSA keys that it will use during the SSH process. Yo can set this with the command given bellow.
cbitss(config)# crypto key generate rsa
 The name for the keys will be:
 Choose the size of the key modulus in the range of 360 to 2048 for your
   General Purpose Keys. Choosing a key modulus greater than 512 may take
   a few minutes.

How many bits in the modulus [512]: 1024
 % Generating 1024 bit RSA keys, keys will be non-exportable...[OK]

3. Setup the Line VTY configurations
Here in Line VTY you need to set SSH as input method. You also can set it to login local.
# line vty 0 4
(config-line)# transport input ssh
(config-line)# login local
(config-line)# exit

4. Create the username password
Here yo need to set username and password by which you have to login in router.
cbitss# config t
Enter configuration commands, one per line.  End with CNTL/Z.

cbitss(config)# username cbitss password cbitss@123

You also need to set Enable passwords.
cbitss# enable secret admin@cbitss
cbitss# service password-encryption

5. Verify SSH access
On router to check either SSH is enabled or not you need to ru bellow commands.
cbitss# sh ip ssh
SSH Enabled - version 1.99
Authentication timeout: 120 secs; Authentication retries: 3
After checking the status of the SSH now you can take access from computer to router. To take access from PC to router you can run  following commands
remote-machine# ssh
login as: cbitss
Using keyboard-interactive authentication.

Like this you can configure SSH in any Cisco Device.