2. Configuring Routers

3. Oh No! I’ve got to program a router! What do I have to do

4. Router> Router>enable Router# Router#config t Config t is the place to be! Log on to the router

5. Name the router! Router(config)#hostname Lab-A Step One Lab-A

6. Password protect the Privilege Mode Step Two Lab-A(config)#enable secret class enable secret 5 $1$emBK$WxqLahy7YOAf0nifub.hU Results in: PasswordCommands

7. Configure the Interfaces Step Three Lab-A(config)#interface serial0 Lab-A(config-if)# (Note prompt change)

8. Address the Interface(S0) Lab-A(config-if)#ip address 201.100.11.1 255.255.255.0 Ip addressSubnet mask S0=201.100.11.1 S0

9. Clock ticks MUST be set between routers on the interface with the serial cable DCE end. Serial0 is where the DCE connects in our lab.

10. We use Serial0 Lab-A(config-if)#clock rate 56000

11. Address the next Interface (E0) Lab-A(config-if)#ip address 192.5.5.1 255.255.255.0 Lab-A(config-if)#interface ethernet0 (This changes to program interface e0) S0=201.100.11.1 E0=192.5.5.1 E0 S0

12. Address the next Interface (e1) Lab-A(config-if)#ip address 205.7.5.1 255.255.255.0 Lab-A(config-if)#interface ethernet1 (This changes to program interface e1) S0=201.100.11.1 E0=192.5.5.1 E1=205.7.5.1 S1=No address E1 S0 E0

13. Control z Lab-A# Lab-A#show running-config

14. Results: version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption service udp-small-servers service tcp-small-servers ! hostname Lab-A ! enable secret 5 $1$emBK$WxqLahy7YOAf0nifub.hU. ! ip subnet-zero --More--

15. interface Ethernet0 ip address 192.5.5.1 255.255.255.0 no ip directed-broadcast shutdown ! interface Ethernet1 ip address 205.7.5.1 255.255.255.0 no ip directed-broadcast shutdown --More--

16. interface Serial0 ip address 201.100.11.1 255.255.255.0 no ip directed-broadcast no ip mroute-cache clockrate 56000 shutdown ! interface Serial1 no ip address no ip directed-broadcast shutdown

17. Like people, routers have to talk to one another!

18. Step Four Set up routing protocols

19. Routing Protocols: RIPRIPv2 IGRPEIGRP OSPF

20. Set up the routing protocol Lab-A(config)#router rip Lab-A(config-router)# version 2 Lab-A(config-router)#network 192.5.5.0 Lab-A(config-router)#network 207.7.5.0 Lab-A(config-router)#network 201.100.11.0 (Note prompt change)

21. Note! You have to configure for EACH network (remember network # is the “wire” #) Each network is on a separate line Hit Control z to activate and return to: Lab-A#

22. Lab-A#show run ! router rip version 2 network 192.5.5.0 network 201.100.11.0 network 205.7.5.0 ! (router portion of show run)

23. Control Access Control and secure access from: CONSOLE VTY (telnet) AUX (modem)

24. Control Access Step Five Lab-A(config)#line console 0 Lab-A(config-line)#password cisco (Note prompt change) Lab-A(config-line)#login

25. Continue Lab-A(config)#line vty 0 4 Lab-A(config-line)#password cisco Lab-A(config-line)#login

26. Control Z (typing the word “exit” at the prompt takes you up one level) Lab-A#show run will give the following results: line con 0 password cisco login transport input none line aux 0 line vty 0 4 password cisco login

27. Want to save time and move fast between routers? Step Six

28. A REAL time Saver! Lab-A(config)#ip host Lab-A 192.5.5.1 205.7.5.1 201.100.11.1 Lab-A(config)#ip host Lab-B 219.17.100.1 199.6.13.1 201.100.11.2 Lab-A(config)#ip host Lab-C 223.8.151.1 204.204.7.1 199.6.13.2 Lab-A(config)#ip host Lab-D 210.93.105.1 204.204.7.2 Lab-A(config)#ip host Lab-E 210.93.105.2 Lab-A(config)#control z

29. Turn on the interfaces: Lab-A(config)#interface s0 Lab-A(config-if)#no shutdown Lab-A(config-if)#interface e0 Lab-A(config-if)#no shutdown Lab-A(config-if)#interface e1 Lab-A(config-if)#no shutdown Step Seven

30. For Lab-A router, you are through!

31. Program the other routers the same way, BUT: Use the interfaces in use on each particular router Use the correct ip address/network address for each port on that router Check and save your configuration! Router#show run (Check) Router#copy run start (S ave)

32. Let’s Review: Step 1 – name router Hostname xxxxx Step 2 – set “privilege” password and encode it Enable secret xxxxx Step 3 – configure interfaces Interface sX (or eX)

33. Step 4 – Set the routing protocols Router rip Step 5 – Set who and where access comes from Line console (vty) Step 6 – Save Time Ip host xxx.xxx.xxx yyy.yyy.yyy Step 7 – Turn on interfaces Router(config-if)#no shutdown

34. Check and Save your work! Check your config Router#show run Save your configuration from RAM to NVRAM Router#copy run start

35. You’re Through! By Jim Roe