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Telnet  Telnet(Telephonic network) It is using port no 23, this is the service which is use for remotely access router switch from any location. Telnet is an application protocol used on the internet or local area network to provide a bidirectional interactive text oriented communication facility using a virtual terminal connection. User data is interspersed in band with Telnet control information in an 8 bit byte oriented data connection over the transmission control protocol (TCP). Telnet was developed in 1969 beginning with RFC 15 extendad in RFC 855, and standard zed as internet engineering task force (ietf) internet standard STD 8, one of the first internet standards. Historically, Telnet provide access to a command line interface on a remote host. However, because of serious security concerns when using Telnet ove

Network switch introduction This is layer 2 device (data link layer devices) mostly. It is use for star topology; it is used to extend the network connectivity. A network switch is used in a wired network ot connect to other device using ethernet cables. The switch allows each connected device to talk to the others. Wireless only networks do not use switch because devices such as wireless routers and adapters communicate directly with one another. Although you can use the ports on the back of a router or modem to connect a few ethernet devices together, switch offer a number of advantages: Switches allow you to connect dozens of devices. Switches keep traffic between two devices from getting in the way of your other device on the same network. Switches allow you to control who has access to various parts of the network. Switches allow you to monitor usage. Switches allow communication (withing your network) that's even faster than the

Introduction to router What is router? Router is a layer 3 device or it is network layer device which is used for to connect different network with each other and judge the shorest path to transfer the data. Manufacture of router:- Cisco Juniper 3com Hp D-lint...etc. Internal component of router:- Microprocessor:- in this microprocessor we use the RISC technology it is available 70MHz up to 1.0 GHz and above. Generally Motorola companies microprocessor is use. Ram:- it is use to save running configuration available in 16, 32, 64, 128,256 MB. Flash:- this is hdd of router which is used to store os configuration of the router. Available in 16, 32, 64, 128 MB. Nvram:- it consist the startup configuration. Rom:- it is bios of router. External component of router

Sri Jagannath Rath Yatra New Delhi. The Rath Yatra of Sri Jagannath Temple located in Puri is famous all over the world. Devotees from all over the country and abroad come to participate in it. This time the Rath Yatra is starting from July 4. On this occasion, we will tell you about some interesting things related to the temple. 1. The form of Lord Krishna is worshiped in Jagannath Puri. Here Lord Jagannath sits as his brother Balarama and sister Subhadra. 2. There are many beliefs related to the Rath Yatra of Jagannath Temple. According to some Puranas, when Subhadra comes to her maternal home after marriage, she asked her brothers to visit the city. She then left on a chariot with her brothers Jagannath and Balarama.  3. Another religious belief is the temple of Gundicha near Jagannath temple. It is believed to be the home of Sri Krishna aunt. It is said that Sri Krishna aunt invited him to come to his house. That is when he rides his chariot and stays with hi

Routing protocols Dynamic routes are routes learned via routing protocols . Routing protocols are configured on routers with the purpose of exchanging routing information. There are many benefits of using routing protocols in your network, such as: unlike static routing, you don’t need to manually configure every route on each router in the network. You just need to configure the networks to be advertised on a router directly connected to them. if a link fails and the network topology changes, routers can advertise that some routes have failed and pick a new route to that network. Types of routing protocols There are two types of routing protocols: 1. Distance vector (RIP, IGRP) 2. Link state (OSPF, IS-IS) Cisco has created its own routing protocol – EIGRP. EIGRP is considered to be an advanced distance vector protocol , although some materials erroneously state that EIGRP is a hybrid routing protocol , a combination of distance vector and link state. All of the r