CCNA Course in Urdu Lab 1 Part 2 Cisco Internetworking Operating System (IOS)
LAB#01 Part 2
CISCO INTERNETWORKING OPERATING
SYSTEM (IOS)
SETTING YOUR PASSWORDS:
Basically there are 5 or say 4
important passwords that are to be set on a Cisco Router:
1.
Console line password
2.
Auxiliary line password
3.
Telnet or line vty password
4.
enable password
5.
enable secret password (If you are using this password
then no need to use enable password because enable secret password is much
better than enable password due to encryption present in it. If a router has
both enable and enable secret password then the later will be overwritten on
the former one.)
It should be remembered that we
can view the password after setting them by using the command show running-config, the interesting
observation will be that the enable secret password will not be viewed by us as
it will be in encrypted form.
For setting the passwords, you
should be in Global configuration mode:
Example of enable password
Router(config)# enable password
hamdard
Example of enable secret password
Router(config)# enable secret
hiit
Example of telnet lines password
Router(config)# line vty 0 ? [? Is the last number of vty
lines i.e. telnet lines]
Router(config-line)#password CN
Router(confiog-line)#login [This
login command will prompt the user to verify
for authentication when telnetting into the
router]
Example of console line password
Router(config)# line console 0
Router(config-line)#password
cisco
Router(config-line)#login
Example of auxiliary line password
Router(config)# line aux 0
Router(config-line)#password
ccnlab
Router(config-line)#login
Click Here To View Video Lecture in Urdu:
SETTING THE HOSTNAMES, DESCRIPTIONS,
IP ADDRESS & CLOCK RATE:
Example of
setting hostname to a router:
Go to the Global Configuration
mode and use the command hostname followed
by the hostname:
Router#config t
Router(config)#hostname Hamdard
Hamdard(config)#
Example of
setting banners on router:
Go to the global configuration mode
and type the command banner ? you
will notice that you can set 4 different types of banners. But here we are
interested only in Login banner and Message of the day banner (MOTD).
- MOTD Banner:
Router#conf t
Router(config)#
banner motd #
This
is an motd banner
#
Router(config)#
Notice that #
sign is the delimiting character. This tells the router when the message is
done. You can’t use this delimiting character in the message itself.
Removing the motd banner:
You can remove
the MOTD banner by typing:
Router#conf t
Router(config)#no
banner motd
- LOGIN
Banner:
Router#conf t
Router(config)#
banner login #
This is a login banner
#
Router(config)#
The login banner
is immediately displayed after the MOTD but before the user mode password
propmy. Remember that you set your user mode passwords by setting the console,
auxiliary and VTY line passwords.
Removing the login banner:
You
can remove the login banner by typing:
Router#conf
t
Router(config)#no
banner login
Click Here To View Video Lecture in Urdu:
Example of
setting ip address on any interface of router:
Ethernet Interface:
Router#conf
t
Router(config)#interface
ethernet 0 (may be fastethernet or
fa0, or you can use e0)
Router(config-if)#ip
address 192.168.10.2 255.255.255.0
Router(config-if)#no
shutdown
You can add description to this interface by
using the command description
Router(config-if)#description
INTERFACE CONNECTED TO HAMDARD SWITCH
Serial
Interface:
Router#conf t
Router(config)#interface
serial 0 (may be serial 0/0 or s0/0 or s0/0/1 or s0/0/1:1)
Router(config-if)#ip
address 172.20.30.5 255.255.255.0
Router(config-if)#no
shutdown
Router(config-if)#description WAN
LINK CONNECTED TO HAMDARD UNIVERSITY.
You
can also set bandwidth and clock rate on the serial interface (clock rate is
set for synchronization between two serial links, at DCE).
Router(config)#bandwidth 64
Router(config)#clock rate 64000
If
you want to check whether your serial link is DCE or DTE then you have to use
show controllers command with the serial interface number:
e.g. Router#show controllers serial
0/0
This
will tell about the DCE and DTE information about that particular link.
Adding multiple addresses on a single
interface:
You can add multiple addresses on a
single interface by using the keyword secondary
after the ip address and subnet mask in the ip address command. We will learn more about it in our R&S Lab.
VERIFYING YOUR CONFIGURATIONS:
Following commands are very
important when we are verifying our configurations:
- show interface
serial number
- show interface
ethernet number OR show
interface fastethernet number [number may be like 0 or 0/0 or 0/0/0 or 0/0/0:1]
- For clearing the counters on the interface use the
command: clear counters; on the privileged mode.
- If you want to see layer 3 configurations then you
have to use the command sh ip
interface
- If you want to have a quick summary of all interfaces
connected to the router then use the command show ip interface brief
- If you want to see the protocols running on the
interfaces then use the command show
protocols
Click Here To View Video Lecture in Urdu:
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