CSE 304
COMPUTER NETWORK LAB
LECTURE 01
Md. Mamunur Rashid Akand
Lecturer, Department of CSE, BUBT
Course Objective
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Introducing with different CISCO products
(Hardware and Software)
Installing and configuring networking devices
(switches and routers)
Implementing different networking protocols in lab
environment.
Gathering necessary skills and knowledge to install,
operate and troubleshoot a small network.
Introduction
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CISCO mainly manufactures different hardware
devices for networking.
To operate these hardware, CISCO also provides
some software.
The Popular CISCO software are – CISCO IOS,
CISCO CAN, CISCO SDM.
CISCO Software
CISCO IOS
 Internetworking Operating System.
 This is actually CISCO proprietary router and switch
operating system.
 Stored in the flash memory of CISCO device.
CISCO Software
CISCO Device Manager
 A web-based tool installed in switch and router by
default.
 To access this tool, one need to be connected with
CISCO switch/router management IP from a
computer within a network.
 This is a part of IOS, stored in flash memory.
CISCO Software
CISCO CNA
 CISCO Network Assistant is JAVA based application
used to monitor and manage CISCO switch and
router from a central console.
 Provides Graphical User Interface (GUI).
 Stored in the hard disk of a computer.
CISCO Software
CISCO SDM
 Used to monitor and manage CISCO router from
central console.
 Provides GUI.
CISCO Software
Software in ROM
 POST(Power On Self Test): Soon after turning on the
power of a CISCO device, this program runs to test the
hardware installed.
 Bootstrap Program: Just after the POST process, this
program loads the IOS Boot image from the flash
memory.
 Boot Image: Subset of CISCO IOS. This image is needed
to download the upgrades of CISCO IOS using TFTP.
 ROM Monitor(ROMMON): Used to test and troubleshoot
the configuration kept in ROM and flash memory of a
CISCO device.
CISCO Hardware
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CISCO Device memory:
Read Only Memory(ROM): Used to store the necessary programs
required to start up a device. Everything preserved in this memory
remains intact even after turning off the device.
Flash Memory: CISCO IOS is preserved in flash memory. This is
non-volatile too.
Non Volatile Random Access Memory(NVRAM): Startup
configuration is preserved here.
Random Access Memory(RAM): Running Configuration is preserved
here.
Configuration Register: 2 bytes area of NVRAM, used to tell how
the device start up will occur.
CISCO Device Configuration
Startup Configuration
2.
Running Configuration
Command used to save the running configuration as
startup configuration –
copy running-config startup-config
1.
CISCO IOS Interface
CISCO IOS Command-Line-Interface(CLI):
1.
Setup mode: Prompting user build running config.
2.
User EXEC mode: “>” symbol is used.
3.
Privileged EXEC mode: “#” symbol is used. Runs
advanced commands. To enter this mode from user
exec mode isSwitch>enable
Switch#show running-config
Switch#disable
Switch#>
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CISCO IOS Interface
4. Global Configuration Mode: used to configure the
whole device.
Switch>enable
Switch#configure terminal
Switch(config)#do show running-config
5. Specific Configuration Mode: to configure a
specific component.
Switch(config)#interface fastethernet 0/1
CISCO IOS Interface
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Command shortcut
Command Line Error: Invalid Input, Ambigouas
command, incomplete command.
Default answer: shows in […]
Component Activating/Deactivating
Context sensitivity help: using “?”
Knowing command argument
CISCO switch activities
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Mac Table
Frame Flooding
Frame Forwarding
Frame Filtering
Avoiding loop
Startup Process of CISCO device
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POST
BOOTUP
Loading IOS in RAM
Loading Startup configuration
Configuring CISCO switch/router
Naming a switch
 Giving IP address
 Giving IP default gateway
 Setting password: console, auxiliary, VTY
Switch(config)#password pass
Switch(config)#enable secret pass
Switch(config)#line console 0
Switch(config-line)#password pass
 Setting banner:
Switch(config)#banner motd #
Welcome to network lab#
 Showing running and startup config
 Erase startup-config
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