Archive for the ‘CCNA’ Category

This article is all about Router security.Here in this lab we will discuss about console password,auxiliary password,enable password,enable secret password,telnet password with telnet configuration,username with clear text password,username with encrypted password,service password-encryption on router.

So to demonstrate all above security on router I am going to use cisco packet Tracer software.This is one of important portion for ccna certification students and also important with networking  point of view because it is directly related with router security and as we all know Routers are the backbone of every IT company. (more…)

This is a basic ospf configuration lab using two routers. Using two routers ospf configuration have been done in this lab. I have used cisco Packet tracer software to demonstrate the ospf configuration. This if you are learning or preparing for ccna certification or ccna training then this lab is for you. Simple and to the point in just few simple steps.

I hope you can clearly see the OSPF Topology diagram drawn below. And now if you can see you can clearly analyse that there are total three routers in this topology table and total three networks.

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Today I am here to discuss ssh configuration and ssh configuration options on routers in little more detail. using cisco packet tracer software here i will show you not only how to configure ssh over cisco router but also show you how to configure other ssh setting on router properly.Before we go ahead in this article i will love to brief you guys about the steps i will follow to do this lab.

Even you have Basic Knowledge of networking you can easily understand this lab and can configure ssh on any router with all other settings.

 

1.Configure Router Interface ,assign ip address and gateway ip on PC and Then Verify Communication using PING Command.

2. Configure hostname and domain name for router

3 Configure RSA key

4.Enable SSH v2

5.Configure other settings for SSH

6.Create user account for ssh and password with higher priviledge.

7.Configure VTY Line for SSH

7.Check ssh connection from remote pc.

8.Check ssh version and other settings

9.Check or see public key you created

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Today through this article i will try to show you how to configure load balancing or load sharing using static routing.I mean one can use static routing too for load-balancing.Here in this architecture we have total 3 routers R1 ,R1 and R3. When any traffic generated from R1 for R3 it can travel in two ways: In other ways you can simply say that when we want to send something from PC0 (1.0.0.2) to PC1 (5.0.0.2) our packets reach there in two ways. here in this lab there are two possible paths to travell from pc0 to pc1. The First one is R1R3 and the second one is R1R2R3.I am going to perform this lab with the help of cisco packet tracer here.So just start learning load balancing and load sharing using static route with the help of an example lab using cisco packet tracer.

so when we have two simultaneously path to send packets from source to destination that is known as load balancing.

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This article is all about redistribution configuration lab between two eigrp autonomous system . Here in this lab we will configure  EIGRP  having different autonomous number. To show Multiple EIGRP AS configuration on same router i am using cisco packet tracer. You can see EIGRP neighbors with different AS numbers in this lab and you will learn how to configure it to communicate them.In below topology diagram you can see EIGRP Topology having different Autonomous Value. There are total three routers R1, R2 and R3 R1 is in As 1 while R3 in AS 2. But R2 is in both AS.Now read carefully how i am going to configure it.

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This is a RIP Routing Configuration Lab using two Routers. In this article i have shown how to configure rip routing using cisco packet tracer. This is an example lab showing rip routing and it’s configuration having two routers and three network as mentioned in below topology diagram. I have tried my best to make it easy for you to learn rip routing in just few simple steps. I have also tried my best to explain the rip routing code and there usage and why they are necessary.Apart from RIP routing configuration I have also included RIP routing Troubleshooting command which will helps you to troubleshoot your network problem where RIP Routing is configured.

http://www.youtube.com/watch?v=J7QH_d6ZM-E

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This lab is all about static routing configuration. Using cisco packet tracer here i will explain static routing configuration in simplest way and try to explain you the static routing configuration codes. So you can   easily understand static routing configuration using this example lab having two routers and total three network. I have used cisco packet tracer software to show this static routing lab. In this article i will also show you how to assign ip address on router interfaces and how to setup ip address and gateway ip on PC. (more…)

Hot Standby Router Protocol configuration on cisco router.
HSRP Configuration Lab in Cisco packet tracer.

In this article I will explain you what is HSRP (Hot Standby Router Protocol) and how to configure and use it. I will explain all HSRP Commands along with HSRP Metrics and Configuration in few simple steps.


HSRP is actually a FHRP (First Hop Redundancy Protocol).  FHRP(First Hop Redundancy Protocol) means it will allow you to configure more than one physical router such that it will act as a single router.

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RIP Routing Configuration Lab using Three Routers in Cisco Packet Tracer


In this tutorial we will learn how to configure rip routing using three routers.This rip routing configuration lab is done with the help of cisco packet tracer.If you are learning ccna or getting prepared for ccna certification exam then this tutorial will be beneficial for you.While writing this rip routing notes i will try to keep it as simple as possible.And i will explain this tutorial in few simple steps so that you can easily configure rip routing after reading this article.All IT or Electronic company use routers for networking purpose include Wipro,Infosys,HCL,IBM,Google,facebook to support there Network Infrastrusture and they use these routing protocols like rip routing,EIGRP,OSPF,BGP etc. But in this lab our focus will be on rip routing configuration. (more…)

This is basic networking tutorial showing ip address configuration on cisco router.For demonstration i have used cisco packet tracer software.For this ip address configuration lab I have taken three routers and two PC and total four Networks. 1.0.0.0/8   3.0.0.0/8    4.0.0.0/8  and  5.0.0.0/8. Along with ip assignment on router interfaces we will also learn how to change host-name on router. (more…)

This is a cisco packet tracer lab showing how to backup and restore router configuration using a ftp server.So in this tutorial we will learn how to take backup of router configuration over a ftp server and how to restore it back from ftp server when we need it.This is a detail tutorial about router configuration backup and restoration using ftp server,but instead of FTP server one can use TFTP server too. (more…)

In this tutorial i am going to show you how to configure Dynamic NAT on Cisco Router and to show this configuration lab i am going to use cisco packet tracer software here.

If you are new to Network Address Translation You must Read below articles before going through this DNAT configuration Lab.

Read:NAT Basics and Introduction Tutorial about NAT Technology.
Read: Static NAT Configuration LAB.
Read: IPv6 Static NAT Configuration LAB.

After Configuring Dynamic NAT a person in Public Network  can’t see the real Public IP Address of our Network 2.0.0.0.

They can only see the  range of IP Address with different subnet mask. So you can say that this is also a type of Network Security.

hacking training

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This is a cisco packet tracer lab showing complex static routing configuration.I have used cisco packet tracer software to show this complex static routing configuration.In this lab i have used total 10 routers and 10 computers.Before configuring static routing carefully watch your every step and every network and gateway ip or gateway interface.

You can also read:

How to configure multi area ospf lab in cisco packet tracer

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In this tutorial we will learn the basics of NAT like NAT introduction,Advantages of NAT,Disadvantages of NAT,Types of NAT and NAT configuration;

NAT stands for Network Address Translation. Bydefault Private IP Address can’t access internet because internet uses public ip address.So if you want to access internet from a private ip address you must configure NAT.
NAT is used to communicate public ip address with private ip address and vice versa.
NAT allows a single device like Router to act as a agent between the Internet and Local Network.
So all IP Address Translations take place at Router. (more…)

This is a static routing configuration Lab in which we have taken three routers and total having five networks. To make this static routing configuration little more easier and simple i have summarized this static routing configuration lab in just few simple steps. To perform this lab i have used cisco packet tracer software. (more…)

While working as a Network Engineer or Network system Administrator or as a Networking student you must have idea about the difference between two major routing protocols EIGRP and OSPF.If you know the difference you know better where to implement them and which one better for you in certain circumstances.Here in this article i am going to point out some major difference between EIGRP and OSPF Routing Protocol.

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Today in this tutorial i am going to show you how to configure InterVLAN Routing. But before that we need to know what is InterVLAN Routing and Why we use it? What is the benefits of using intervlan routing?

InterVLAN Routing allow hosts and PCs in different vlan to communicate with each other. As we all know machines or PC in same VLAN can communicate with each other but if you want machines from other VLAN to communicate with you, for that you need to configure InterVLAN Routing.So here in this tutorial i will explain step wise method to easily configure InterVLAN Routing.As i love to explain to the point here i have mentioned step wise and to the point method to configure InterVlan routing.This article is completely focussed on configuration of InterVLAN using a cisco packet tracer.

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In this tutorial we will Learn  how to  configure verify and troubleshoot LACP (Link Aggregation or Ether Channel). Actually Link Aggregation or Ether Channel is a technology very similar to PAgP which allows two or more than two physical ports to combine and provide a new third single logical port which results in high availability and increased bandwidth. In below topology diagram you can see two switches switch0 and switch1 having ports fa0/1 and fa0/2.Using LACP we can bind these two ports to form a single logical port.

Remember LACP is open standard as defined by IEEE 802.3ad standard.
LACP(link aggregation control protocol) have two working mode port one is acive mode and other is passive mode.Passive is equivalent of the PAGP auto and active is equivalent to PAGP desirable mode.

You can also Read:

Configure Ether Channel Manually.
Configuer Ether Channel using PAgP.

lacp

 

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In this tutorial we will learn about PAGP.We will learn how to configure PAGP and how to verify and troubleshoot it after configuration. But before that we must know what PAGP is.PAgP is actually a Cisco Proprietary Protocol which is known as Port Aggregation Protocol which is used to combine two or more physical ports in to a single logical port or you can say it as a EtherChannel. PAGP is developed by CISCO company.The port modes are defined as either auto or desirable.

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backup route lab

In this lab we will learn how to configure backup route configuration in packet tracer.This is an example lab showing backup route configuration betwenn router0 and Router1.

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