1. IST 228\Ch4\Cisco IOS1 What we will be able to do?

2. IST 228\Ch4\Cisco IOS2 Fast Track Introduction Router Con0 is now available Press RETURN to get started. Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface e0 Router(config-if)#ip address 191.20.10.1 255.255.255.0 Router(config-if)#no shutdown %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0, changed state to up %LINK-3-UPDOWN: Interface Ethernet0, changed state to up Router(config-if)#^Z %SYS-5-CONFIG_I: Configured from console by console Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface s0 Router(config-if)#ip address 192.30.10.5 255.255.255.0 Router(config-if)#no shutdown %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up %LINK-3-UPDOWN: Interface Serial0, changed state to up Router(config-if)#^Z %SYS-5-CONFIG_I: Configured from console by console Router#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default U - per-user static route, o - ODR Gateway of last resort is not set C 191.20.10.0 is directly connected, Ethernet0 C 192.30.10.0 is directly connected, Serial0 Router#

3. IST 228\Ch4\Cisco IOS3 Cisco Router User Interface Cisco Internetwork Operating System (IOS) –Provides a command-line interface (CLI), which allows network operators to check the status of the router and network administrators to manage and configure the router –The software that interprets the command is called the command executive (or EXEC)

4. IST 228\Ch4\Cisco IOS4 Overview Of Router Modes

5. IST 228\Ch4\Cisco IOS5 Editing and Help Features Type in (?) at any prompt to list all the commends available form that prompt. Router>? Exec commands: access-enable Create a temporary Access-List entry --More--. Type in (?) after a command to find the next command in the string. Router>ping ? WORD Ping destination address or hostname apollo Apollo echo appletalk Appletalk echo. To find commands that starts with certain letter, use the letter and question mark (?). Router>c? clear clock configure connect copy

6. IST 228\Ch4\Cisco IOS6 Command History –Up arrowlast command entered –Down arrowprevious command entered –show history last 10 command –show terminal terminal configurations Enhanced Editing Commands

7. IST 228\Ch4\Cisco IOS7 Setting Passwords There are five passwords that can be set on a Cisco router:

8. IST 228\Ch4\Cisco IOS8 Enable Password Router(config)#enable password easy Router(config)#enable secret easy Auxiliary Password Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#line aux ? First Line number Router(config)#line aux 0 Router(config-line)#login Router(config-line)#password easy Console Password Router(config)#line console ? First Line number Router(config)#line console 0 Router(config-line)#login Router(config-line)#password easy Telnet Password

9. IST 228\Ch4\Cisco IOS9 Telnet Password Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#line ? First Line number aux Auxiliary line console Primary terminal line vty Virtual terminal Router(config)#line % Incomplete command. Router(config)#line vty ? First Line number Router(config)#line vty 0 4 Router(config-line)#login Router(config-line)#password easy Router(config-line)# Encrypting Your Password Router#show running-config Router#configure terminal Router(config)#service password-encryption Router(config)#no service password-encryption Router(config)#^Z

10. IST 228\Ch4\Cisco IOS10 Banners Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#banner ? LINE c banner-text c, where 'c' is a delimiting character exec Set EXEC process creation banner incoming Set incoming terminal line banner login Set login banner motd Set Message of the Day banner Router(config)#banner motd # Enter TEXT message. End with the character '#'. Get away from my router! # Router(config)#^Z %SYS-5-CONFIG_I: Configured from console by console Router#exit Router Con0 is now available Press RETURN to get started. Get away from my router. Exec Banner Incoming Banner Login Banner

11. IST 228\Ch4\Cisco IOS11 Interfaces Ethernet, serial, console, and auxiliary interfaces, the router can have other types of interfaces, including: –Token Ring –Basic Rate Interface (BRI) –Asynchronous Transfer Mode (ATM) –Fiber Distributed Data Interface (FDDI) –Channel Interface Processor (CIP) for System Network Architecture (SNA) –High-Speed Serial Interface (HSSI)

12. IST 228\Ch4\Cisco IOS12

13. IST 228\Ch4\Cisco IOS13 Bringing Up an Interface and Configuring an IP Address Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface serial ? Serial interface number Router(config)#interface serial 0 Router(config-if)#ip address 172.16.10.2 255.255.255.0 Router(config-if)#no shutdown %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up %LINK-3-UPDOWN: Interface Serial0, changed state to up Router(config-if)#^Z Router#

14. IST 228\Ch4\Cisco IOS14 Host Names and Descriptions Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname nopass nopass(config)#interface e0 nopass(config-if)#description irondoor nopass(config-if)#^Z %SYS-5-CONFIG_I: Configured from console by console nopass#

15. IST 228\Ch4\Cisco IOS15 Viewing and Saving Configuration nopass#copy running-config startup-config Destination filename [startup-config]? nopass#show running-config nopass# ping ? nopass#show interface s0 nopass#show ip interface

16. IST 228\Ch4\Cisco IOS16 Cisco Router User Interface A router can be accessed in several different ways –Each of these methods involves access through on of three lines Network administrators typically access the router directly through the console port (also known as the console ) located on the back of the router

17. IST 228\Ch4\Cisco IOS17 Cisco Router User Interface The console port connects directly to a PC through an RJ-45 to RJ-45 rollover cable with an RJ-45 to DB-9 or RJ-45 to DB-25 connector included with the router –Whether you select the DB-9 or DB-25 connector will depend on the type of port on the back of the router The second line used to access the router is through the auxiliary port (AUX) –The AUX is also located on the back of the router

18. IST 228\Ch4\Cisco IOS18 Cisco Router User Interface

19. IST 228\Ch4\Cisco IOS19 Cisco Router User Interface In addition to the AUX and console ports, five virtual terminals (VTY) can be used to configure the router Accessing the router through the VTY lines is the same as telnetting to the router The router can also obtain configuration information from a Trivial File Transfer Protocol (TFTP) server

20. IST 228\Ch4\Cisco IOS20 Cisco Router User Interface

21. IST 228\Ch4\Cisco IOS21 Connecting via Terminal Programs When configuring the router through the console or AUX ports, you must first make the physical connection Then you can access the router through a terminal program There are many different terminal programs that you can use

22. IST 228\Ch4\Cisco IOS22 Switch User Interface There are two types of operating systems in use on Cisco switches: –IOS-based Used by Cisco 1900, 2820, and 2900 switches Catalyst 1900 IOS-based operating system is the switch model that appears on the CCNA exam –Set-based Employed by Cisco 1984G, 2926, 4000, 5000, and 6000 series switches

23. IST 228\Ch4\Cisco IOS23 Router Components: Flash Memory Erasable, programmable, read-only memory (EPROM) Not typically modified during normal operations Can be upgraded or erased when necessary Content of flash memory is maintained even when the router is rebooted

24. IST 228\Ch4\Cisco IOS24 Router Components: Flash Memory

25. IST 228\Ch4\Cisco IOS25 Router Components: NVRAM Nonvolatile random access memory (NVRAM) –Special type of RAM –Not cleared when the router is rebooted –Startup configuration for the router is stored in NVRAM by default –Stores all the user-defined configuration information for the router

26. IST 228\Ch4\Cisco IOS26 Router Components: RAM/DRAM Random access memory (RAM) –Also known as dynamic random access memory (DRAM) –A volatile hardware component Information is not maintained in the event of a router reboot –Similar to how RAM operates in a PC