Cisco Router Configuration

1
Cisco Router Configuration

• We have seen
• show and
• cdp commands
• show startup-config - display the backup
  configuration file
• show running-configdisplay active configuration
  file.

2
Cisco Router Configuration

• erase startup-config - deletes the backup
  configuration file in NVRAM.
• reload - reloads the router, causing it to run
  through the entire configuration process.
• Setup - to enter setup mode from the privileged
  EXEC prompt.

3
Cisco Router Configuration

• configure terminalConfigures manually from the
  console terminal.
• copy tftp running-configLoads configuration
  information from a network TFTP server.
• copy running-config startup-config Stores the
  current configuration from RAM into NVRAM.

4
Cisco Router Configuration

• copy running-config tftp Stores the current
  configuration from RAM on a network TFTP server.

5
Cisco Router Configuration

• Routergt enable
• password
• Router configure terminal
• Router(config) configure mode command
• e.g. interface, subinterface, controller, line,
  router etc.

6
Cisco Router Configuration

• Specific configuration modes
• interface mode - for configuring interfaces
• subinterface mode - for configuring multiple
  virtual interfaces on a single physical interface
• line mode - for configuring the operation of a
  terminal line
• router mode - for configuring an IP routing
  protocol
• etc.

7
Cisco Router Configuration

• Configuring router identification
• Router config term
• Router(config) hostname LABA
• LABA
• ctrl-z back to privileged exec mode
• exit back out one level

8
Cisco Router Configuration

• Message of the day banner
• LABA(config)banner motd message
• Interface description
• LABA(config)interface ethernet 0
• LABA(config-if)description my LAN, BG

9
Password configuration

• Console password
• Virtual terminal password
• Privileged exec password

10
Console password

• LABA(config)line console 0
• LABA(config-line)login
• LABA(config-line)password cisco

11
Virtual Terminal password

• LABA(config)line vty 0 4
• LABA(config-line)login
• LABA(config-line)password cisco
• Enable Password
• LABA(config)enable password class
• or prefer
• LABA(config)enable secret class

12
Configuring interfaces

• LABA(config)int s 0
• LABA(config-if)clock rate 56000
• clk rate is set for DCEs
• LABA(config-if)bandwidth 56
• no clock rate removes clock rate
• shut down/no shut down

13
Configuring routing protocols

• LABA(config)router rip
• LABA(config-router)network 1.0.0.0
• LABA(config-router) network 2.0.0.0
• LABA(config-router)ctrl-z
• LABA(config)ctrl-z
• LABAshow ip protocol
• LABAshow ip route routing table

14
Configuring routing protocols

• LABAgtshow ip interfaces
• LABAdebug ip rip

15
Exercise - Configuring LABA

• Hostname
• Routergtena
• password
• Routerconfig term
• Router(config)hostname lab-a

16
Exercise - Configuring LABA

• Enable secret password - class
• lab-a(config)enable secret class

17
Exercise - Configuring LABA

• All appropriate interfaces with IP addresses and
  subnet masks
• lab-a(config)int s 0
• lab-a(config-if)ip address 201.100.11.1
  255.255.255.0
• lab-a(config-if)clockrate 56000
• lab-a(config-if)bandwidth 56

18
Exercise - Configuring LABA

• lab-a(config)int e 0
• lab-a(config-if)ip address 192.5.5.1
  255.255.255.0
• lab-a(config-if)bandwidth 56
• lab-a(config)int e 1
• lab-a(config-if)ip address 205.7.5.1
  255.255.255.0
• lab-a(config-if)bandwidth 56

19
Exercise - Configuring LABA

• Configure rip
• lab-a(config)router rip
• lab-a(config)network 205.7.5.0
• lab-a(config) network 192.5.5.0
• lab-a(config) network 201.100.11.0

20
Exercise - Configuring LABA

• Console login password - cisco
• lab-a(config)line console 0
• lab-a(config-line)login
• lab-a(config-line)password cisco

21
Exercise - Configuring LABA

• Vty login password - cisco
• lab-a(config)line vty 0 4
• lab-a(config-line)login
• lab-a(config-line)password cisco