OSI Reference Model: Open System Interconnection Reference model gives guidelines to different vendors so that their products can interoperate with each other. The functionality of all the seven layers will be explained. How encapsulation helps different layers talk to each other will be explained with emphasis on the importance of the Hardware Address and IP Address.
TCP/IP: TCP/IP is the transport protocol used on the internet. This module covers the fundamentals of TCP/IP like IP Address, Network ID, Host ID, Subnet Mask, Class A, Class B, Class C Networks and their identification. Number of Class A, Class B, Class C networks. Number of host in each of the networks.
Subnetting: To improve the network performance, the network can be divided into different broadcast domains by a technique called subnetting. Some bits from the host id will be converted into network id bits. The performance of the network is improved by limiting the broadcast packets of the subnet within the subnet. This module introduced the students to the concept of Subnetting.
Switching: The various functions of the switch and in how many modes it can be run will be explained. The concept of Logical broadcast domains. VLANS is discussed Loop avoidance with Spanning Tree Protocol is also discussed.
Collision Domains and Broadcast Domains: The functionality of the HUB, SWITCH and ROUTER will be explained. How a router increases the number of broadcast domains and there by improve the network performance will be explained.
Routing: Every system configured with a IP Address has a routing table in which routes are defined for different networks. When the packets have to be routed from one network to another, a router is required. The router maintain the routing tables and help the packets reach the destination. This module introduce the student to the STATIC and DYNAMIC routing issues.
Command Line Interface: The User Mode, Privileged Mode, Global Configuration Mode and the Specific Configuration Modes are explained. How many ways a router can be accessed and how to restrict with passwords will also explained.
Routing Protocols RIP, IGRP, OSPF, EIGRP, BGP: The configuration of router for both static and dynamic routing is explained. The distance vector routing protocols like RIP, IGRP are explained. The metrics used, the problems of dynamic routing and their remedies are explained.
Access Lists: The router acting as a packet filter can allow or deny the packets access to the networks. The router can act as a security guard sitting at the gate trying to check as to who is entering the network and who is leaving the network. The definitions we give the router in checking the packets are called as Access Lists. How to configure the router for the standard and Extended access lists will also be explained.
Wide Area networking: The geographically disperse networks of an enterprise can be connected by any third party network thus forming a WAN. The encapsulating protocols like HDLC, PPP, Frame Relay are explained. Enabling authentication between the routers with PAP and CHAP are explained. Frame Relay DLCI numbers and how the PVS’s are created is also explained.
The importance of ISDN, terminology, Basic rate and primary rate ISDN, and configuring a router for Dial on Demand routing (DDR) are also explained.
Booting: The hardware of the router, the configuration register value, boot field will be explained. How the ISO is loaded into the memory and how the configuration file is taken from the NVRAM is also explained.
Additional Topics: Voice Over IP, DNS, DHCP, Wireless Networking, VPN and IP Version 6.
0 comments:
Post a Comment