first steps with a router! , elementary configurations on arouter

1. LOGO
CCNA
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch ; +989356589590
Senior @ Tehran Institute of Technology
Copyright 2014

2. Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014
Tehran Institute of Technology
Contents
1. Managing name & Desc.
2. Managing Passwords
3. Console,Interface,Serial Advanced conf.
4. Fundamentals of Routing

3. Managing name & Descriptions
 Note: Privileged Exec mode Required.
 Change hostname
– R1>enable
– R1#configure terminal
– Enter configuration commands, one per line. End with CNTL/Z.
– R1(config)#hostname Router1
– Router1(config)#
 Message of the Day
– Router>enable
– Router#configure terminal
– Enter configuration commands, one per line. End with CNTL/Z.
– Router(config)#banner motd # Welcome to My Router1 ##
– Router(config)#exit
– Router#copy running-config startup-config
– Destination filename [startup-config]?
– Building configuration...
– [OK]
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

4. Passwords and Authentication
Passwords
B
E
C
D
A
Enable
Password
Secret
Password
AUX Password
Console
Passwords
Telnet
Password
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014
Tehran Institute of Technology

5. Password Configurations
Enable Password
– This password needed when you want to switch between user mode and privileged
mode
– Router>enable
– Router#configure terminal
– Enter configuration commands, one per line. End with CNTL/Z.
– Router(config)#enable password $a12345
Note that this password saved in clear text mode, so you can have a look on this password
using “show run” command.
“Show run” is synonyms for “Show Running-Config” Command in Privileged Mode.
-- Router#show run
OR
-- Router# Show Running-Config
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

6. Password Configurations
Secret Password
– That’s similar to Enable Password , the difference
between these codes are encryption of Secret Password.
– Router>enable
– Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
– Router(config)#enable Secret $a12345
– Note that when “secret password” enabled the “enable password” will be disabled.
So when you want to switch between privileged mode and user mode you must enter
Secret password for authentication.
You can have a look on secret password using “show config” mode , as you can see the
password are encrypted!
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

7. Password Configurations
Telnet Password
– Global Mode Required
– Telnet Configuration Required
– Router>enable
– Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
– Router(config)#line vty 0 4
– Router(config-line)#login (means: Password required when telnet acknowledged)
– Router(config-line)#no login (means: Password not needed when telnet acknowledged)
– Router(config-line)#password $a12345
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

8. Password Configurations
AUX Password
– Global Mode required
– AUX Line configuration required
– Router Device must have AUX port physically
– Router>enable
– Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
– Router(config)#line aux 0
– Router(config-line)#login (means: Password required when AUX acknowledged)
– Router(config-line)#no login (means: Password not needed when AUX acknowledged)
– Router(config-line)#password $a12345
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

9. Password Configurations
Console Password
– Router>enable
– Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
– Router(config)#line console 0
– Router(config-line)#login
% Login disabled on line 0, until 'password' is set
– Router(config-line)#password $a12345
– Router(config-line)#
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

10. Console Extra Configurations
 If we don’t define console connection Timeout, the
connection will be lost after10 minutes intentionally , so we
can reconfigure it.
– Router>enable
– Router#configure terminal
– Router(config)#line console 0
– Router(config-line)#exec-timeout 0 0 (means: timeout period is unlimited)
– Router(config-line)#exec-timeout 25 (means: timeout period is 25 minutes)
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

11. Interface mode Extra Configurations
 To begin, here's what Interface Configuration Mode looks like in the Cisco IOS:
 Router#Configure Terminal
 Router(Config)#interface fastethernet0/0
 Router(config-if)#
Alternatively, you can configure a group of
interfaces at the same time by using
the interface range command:
 Router(config)#interface range fastethernet0/0 - 1
 Router(config-if-range)#
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

12. Interface mode Extra Configurations
Shutdown
 By default, a Cisco router or switch shuts down all ports, meaning the
ports aren't operational. However, this is different from a device such as a
Linksys router; by default, all ports of one of these devices are operational
when you turn on the device.
 To enable ports for use, you can use the no shutdown command.
» Router(config-if-range)#no shutdown
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface
FastEthernet0/0, changed state to up
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
» Router(config-if-range)#
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

13. Interface mode Extra Configurations
IP Address
 To put an IP address on a port, use the ip address command. When using
this command, you must provide the IP address and subnet mask.
 Router(config)#interface fastethernet0/0
 Router(config-if)#ip address 10.10.10.1 255.0.0.0
Alternatively, you can make the port broadcast and request a DHCP
IP address by using the following command:
 Router(config-if)#ip address dhcp
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

14. Interface mode Extra Configurations
 Interface Description
 Router>enable
 Router#show running-config (look at interface full name)
 Router#configure terminal
 Router(config)#interface fastethernet0/0
 Router(config-if)#description Language Dep, LAN
By adding details using the description command, anyone working on the router will
know, which saves time and could even prevent outages.
 Router(config-if)#description Gateway to Internet circuit configured by MFT call +98 -
421 - 222 - 4747 for Support
Test above command Result using “ Router# show Running-config “
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

15. Interface mode Extra Configurations
duplex and speed
setting an Ethernet port to 100Mb Full duplex
 Router(config-if)#speed 100
 Router(config-if)#duplex full
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

16. LOGO
Connecting two Routers
@ Point-to-Point
Clock Rate and Bandwidth Scenario
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

17. Connection Methods
Back to Back
in this scenario routers are
in the same location,
maximum distance = 3 – 4
meters.
Connection
Methods
Different
Geography
in this scenario routers
located @ far away from
each other , this distance is
a Geography Distance
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

18. Back to Back Method
Configurations:
one Router act as DTE and another one act as a DCE.
first of all use Router#show Running-Config to see what the serial
port full name? if serial port doesn’t exist you must add it physically.
if exist follow these steps:
 Router(config)#interface serial0/0/0
 Router(config-if)#clock rate 64000
 Router(config-if)#BandWidth 64 (Mbps ; too important in routing protocols)
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

19. In a different Geography
 This is Done by CSU/DSU Modem , when we are using
communication infrastructure in a country this device configure
parameters automatically for the best connectivity, so CSU/DSU
modem is the best solution for this scenario.
Tehran Institute of Technology
Course name: Cisco CCNA
Instructor: Mansour.nch
Senior @ Tehran Institute of Technology
Copyright 2014

20. LOGO
Tehran Institute of Technology
www.Win2Farsi.com