It is a simple Topology for the basic Cisco router configuration. I will show step by step Cisco command mode with video.
Access of  CISCO router:
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1.Line Consol
From RS232 port to Router Console  port
2. Virtually (Line Vty)
a.Telnet
Starting point : on packet tracer > Router > double click  > CLI mode open of router >  no >Enter
>Router>enable > Enter
Router#configure terminal
Router(config)#
Change router name :
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Router(config)#
Router(config)#hostname Router1
Router1(config)#
Secure Cisco Router using password:
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Password for line console:
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Router1(config)#line console 0
Router1(config-line)#password vidyut
Router1(config-line)#login
Router1(config-line)#exit
Enable Password:
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Router1(config)#enable secret  vidyut (Encrypted)
Router1(config)#enable password vidyut (Plain Text)
Password for virtual login:
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Using Telnet
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Router1(config-line)#line vty 0 4
Router1(config-line)#password vidyut
Router1(config-line)#login
Router1(config-line)#exit
To encrypt console and vty password
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Router1(config)#service password-encryption
To set an IP Address at interface: Router 1
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Router1(config)#interface fa  0/0
Router1(config-if)#ip address 10.10.0.1 255.255.255.0
Router1(config-if)#no shutdown
Router1(config-if)#exit
Router1(config)#interface fa  0/1
Router1(config-if)#ip address 192.168.0.1 Â 255.255.255.0
Router1(config-if)#no shutdown
Router1(config-if)#exit
To set an IP Address at interface: Router 2
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Router 2(config)#interface fa  0/0
Router 2(config-if)#ip address  192.168.2.1  255.255.255.0
Router 2(config-if)#no shutdown
Router 2(config-if)#exit
Router 2(config)#interface fa  0/1
Router 2(config-if)#ip address  192.168.3.1  255.255.255.0
Router 2(config-if)#no shutdown
Router 2(config-if)#exit
To set a Warning Banner
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Router1(config)#banner motd @ Authenticate user only. Otherwise Hacker will be HACKED.@
You can see the video Tutorial:
