Routing & Switching

Difference between Linkstate and distance vector protocols

Dynamic Routing Dynamic routing protocols can dynamically respond to changes in the network.  The routing protocol is configured on each router and the routers learn about both each other and remote networks. A dynamic routing table is created, maintained, and…
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Cisco Router Boot Sequence, Cisco Router POST (Power On Self Test)

When a Cisco router boots up, it performs a series of steps, called the router boot sequence, to test the hardware and load the necessary software. Cisco router boot sequence consists of the following steps: 1. The router performs a…
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Basic CCNA Interview Questions AND Answers

What is Routing? Routing is the process of selecting best paths in a network and forward data from source to destination through it. Routing is usually performed by a dedicated device called a router. What is Protocol? A ‘protocol’ is…
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Password Recovery of Cisco Router 2600

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…
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Serial Connections and HDLC

Introduction we will discuss serial links and the physical connections we use. We will then explore the default encapsulation on CISCO routers which is HDLC and finally discuss how to troubleshoot a serial connection. How serial communications work When communicating…
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Cisco RIP PROTOCOL

CONFIGURE A SIMPLE TOPOLOGY ON THE PACKET TRACER AS SHOWN BELOW The Routing Information Protocol (RIP) is one of the oldest distance-vector routing protocols which employ the hop count as a routing metric. R1 In order to apply protocol RIP,…
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What’s New in Cisco CCNA v3.0?

Cisco’s most popular certification, the Cisco Certified Network Associate (CCNA), is undergoing an overhaul by upgrading from CCNA v2.0 to CCNA v3.0. That means new exams for ICND1, ICND2, and CCNA, and that also means new training courses. According to…
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Cisco Certification: 5 Tips For Success

Earning a Cisco certification can boost your IT career, but requires careful planning and training. Here are five tips to help guide your certification strategy. Whether you’re looking to advance your career, get your foot in the door, or considering…
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Configure Cisco Router as DHCP Relay Agent

A DHCP relay agent is any host or IP router that forwards DHCP packets between clients and servers. Note :  Follow below given Picture ==== note  :   click on image to view Here we have  a  DHCP Server   IP  address  (192.168.2.254) Router…
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Cisco Network Security

1. What is a Firewall? A firewall is a set of rules and programs , located at a network gateway server, that protects the resources of a private network from users from other networks. It is a network security system…
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