Chapter 2. Chapter 2 A. Configuring a Network Operating System
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1 Chapter 2 Chapter 2 A Configuring a Network Operating System
2 Chapter 2 Cisco IOS IOS stands for Internetwork Operating System It is a family of software used on most Cisco Systems routers and current Cisco network switches. IOS is a package of routing, switching, internetworking and telecommunications functions integrated into a multitasking operating system.
3 Chapter 2 - Scope 2.0 Introduction 2.1 IOS Bootcamp 2.2 Getting Basic 2.3 Addressing Schemes 2.4 Summary
4 2.1 IOS Bootcamp
5 Cisco IOS Operating Systems All networking equipment are dependent on Operating Systems The OS on home routers is usually called firmware Cisco IOS A collection of network operating systems used on Cisco devices
6 Cisco IOS Operating Systems An OS consists of: Shell Kernel Hardware The shell allows users to interact with the system via CLI and GUI CLI Command Line Interface GUI Graphical User Interface
7 Cisco IOS Operating Systems The kernel allows communication between software and hardware. It also manages hardware resources to meet software requirements Hardware refers to the physical part of a computer, including all underlying electronics
8 Cisco IOS Purpose of OS PC operating systems (Windows 8 and OS X) perform technical functions that enable: Use of a mouse Viewing of output on video display units Entering of text using input devices Switch or router IOS provides options to: Configure interfaces Enable routing and switching functions All networking devices come with a default IOS Possible to upgrade the IOS version or feature set In this course, primary focus is Cisco IOS Release 15.x
9 Cisco IOS Location of the Cisco IOS Cisco IOS is stored in Flash Non-volatile storage - data not lost when electrical power is lost Data can be changed or overwritten as needed Can be used to store multiple versions of IOS IOS copied from flash to volatile RAM Quantity of flash and RAM memory determines IOS that can be used
10 Cisco IOS IOS Functions These are the major functions performed or enabled by Cisco routers and switches. Security Routing QoS Addressin g Managing Resources Interface
11 Routing Routing is the process of selecting best paths in a network. Routing is performed for many kinds of networks, including the telephone network (circuit switching), electronic data networks (such as the Internet), and transportation networks. QoS Quality of Service (QoS) refers to the capability of a network to provide better service to selected network traffic
12 Accessing a Cisco IOS Device Console Access Methods Cisco devices have no displays built in. To access and interact with them, we need to connect them to video display units.
13 Accessing a Cisco IOS Device Most common methods to access the CLI (Command Line Interface) environment are: Console Port Method Telnet or SSH (Secure SHell) Method (remote) AUX port Method (remote)
14 Accessing a Cisco IOS Device Console Access Methods Console RJ-45 Port Method Device is accessible even if no networking services have been configured (out-of-band) Need a special console cable Allows configuration commands to be entered Should be configured with passwords to prevent unauthorized access Device should be located in a secure room so console port cannot be easily accessed
15 Accessing a Cisco IOS Device Out-of-Band Out-of-band access allows you to see your equipment without network connections. Out-of-band means outside normal band It provides you with a backup path in case of network communication failure. For instance, an equipment operates on LAN. When network is down, you can use your smartphone to access the equipment.
16 Accessing a Cisco IOS Device Console Access Methods Console Port with Laptop connected for CLI to be displayed
17 Accessing a Cisco IOS Device Telnet Method Telnet Method Method for remotely accessing the CLI over a network Require active networking services and one active interface that is configured
18 Accessing a Cisco IOS Device SSH Method Secure Shell (SSH) Remote login similar to Telnet, but utilizes more security Stronger password authentication Uses encryption when transporting data
19 Accessing a Cisco IOS Device AUX Access Method Aux Port Out-of-band connection is available Dial-up modem is connected to Aux port Modem uses telephone line Does not require configuring of network services Can be used like console port connect directly to a PC/laptop
20 Accessing a Cisco IOS Device Terminal Emulation Terminal emulation is the ability to make one computer terminal, typically a PC, appear to look like another, usually older type of terminal. For example, a terminal emulation software is needed on Windows 10 to display a program that runs on Windows 3.1
21 Accessing a Cisco IOS Device Terminal Emulation Programs Software available for connecting to a networking device: PuTTY Tera Term SecureCRT HyperTerminal OS X Terminal
22 Cisco IOS Command Modes
23 Navigating the IOS Cisco IOS Command Modes IOS provides group of commands used for monitoring, configuring and maintaining cisco devices. For security and easy administration, IOS commands are divided in the set of different command modes. Each command mode has its own set of commands. Which commands are available to use, depends upon the mode you are in.
24 Navigating the IOS Cisco IOS Command Modes Primary Modes User EXEC Mode Privileged EXEC Mode Other Modes Global Configuration Mode Interface Configuration Mode Sub Interface Configuration Mode Setup Mode ROM Monitor Mode
25 Navigating the IOS Cisco IOS Modes of Operation
26 Navigating the IOS Primary Modes
27 Navigating the IOS Global Configuration Mode and Submodes
28 Navigating the IOS Navigating Between IOS Modes The commands enable switches to Privileged EXEC mode. disable switches back to EXEC mode.
29 Navigating the IOS Navigating Between IOS Modes (cont.)
30 END OF CHAPTER 2A
31 REVIEW 1. IOS stands for.
32 REVIEW 1. IOS stands for Internetwork Operating System It is a family of software used on most Cisco Systems routers and current Cisco network switches.
33 Review 2. The OS on home routers is usually called.
34 Review 2. The OS on home routers is usually called firmware.
35 Review 3. An OS consists of:???
36 Review 3. An OS consists of: Shell Kernel Hardware
37 Review 4. The shell allows users to interact with the system via CLI and GUI CLI stands for GUI stands for
38 Review 4. The shell allows users to interact with the system via CLI and GUI CLI Command Line Interface GUI Graphical User Interface
39 Cisco IOS Operating Systems 5. The kernel allows communication between and
40 Cisco IOS Operating Systems 5. The kernel allows communication between software and hardware. It also manages hardware resources to meet software requirements
41 Cisco IOS Operating Systems 6. Hardware refers to the of a computer, including all underlying electronics
42 Cisco IOS Operating Systems 6. Hardware refers to the physical parts of a computer, including all underlying electronics
43 Cisco IOS Review 7. Cisco IOS is stored in storage
44 Cisco IOS Review 7. Cisco IOS is stored in Flash storage
45 Cisco IOS Review 8. Non-volatile means.
46 Cisco IOS Review 8. Non-volatile means data are not lost when electrical power is lost.
47 Cisco IOS Review 9. What are the 6 functions performed or enabled by Cisco routers and switches?
48 Cisco IOS Review 9. What are the 6 functions performed or enabled by Cisco routers and switches? Security Routing QoS Addressin g Managing Resources Interface
49 Review 10. What is the meaning of routing?
50 Review Routing is the process of selecting best paths in a network.
51 Review 11. Does Cisco devices have display units?
52 Review 11. Does Cisco devices have display units? No
53 Review 12. Three methods to access the CLI (Command Line Interface) environment of Cisco devices are:???
54 Review 12. Three methods to access the CLI (Command Line Interface) environment of Cisco devices are: Console Port Method Telnet or SSH (Secure SHell) Method (remote) AUX port Method (remote)
55 Review 13. The Console Port is a port. It can be connected to another port using a cable.
56 Review 13. The Console Port is a RJ-45 port. It can be connected to another RJ-45 port using a rollover cable.
57 Review 14. Telnet Method is a Method for.
58 Review 14. Telnet Method is a Method for remotely accessing the CLI over a network
59 Review 15. Secure Shell (SSH) method is similar to Telnet method, but uses and stronger authentication. It also uses when transporting data.
60 Review 15. Secure Shell (SSH) method is similar to Telnet method, but uses more security and stronger password authentication. It also uses encryption when transporting data
61 Review 16. For the Aux Port Method, a modem or a can be used. connection is available.
62 Review 16. For the Aux Port Method, a dial-up modem or a laptop can be used. Out-of-band connection is available.
63 Accessing a Cisco IOS Device Review 17. Out-of-band is a feature of a device that allows you to see your equipment without.
64 Accessing a Cisco IOS Device Review 17. Out-of-band is a feature of a device that allows you to see your equipment without network connections.
65 Accessing a Cisco IOS Device Terminal Emulation Terminal emulation is the ability to make.
66 Review 18. Terminal emulation is the ability to make one computer terminal look like another type of terminal. For example, a terminal emulation software is needed on Windows 10 to display a program that runs on Windows 3.1
67 Review 19. What are some terminal emulation software?
68 Review 19. What are some terminal emulation software? PuTTY Tera Term SecureCRT HyperTerminal OS X Terminal
69 Review 20. Cisco IOS has a few command modes. Name two Primary Modes.
70 Review 20. Cisco IOS has a few command modes. Name two Primary Modes User EXEC Mode Privileged EXEC Mode
71 Review 21. Cisco IOS has a few command modes. Name five other modes.
72 Review 21. Cisco IOS has a few command modes. Name five other modes. Other Modes Global Configuration Mode Interface Configuration Mode Sub Interface Configuration Mode Setup Mode ROM Monitor Mode
73 END OF CHAPTER 2A
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Lab - Building a Switch and Router Network
Topology Addressing Table Device Interface IP Address Subnet Mask Default Gateway G0/0 192.168.0.1 N/A G0/1 192.168.1.1 N/A PC-A NIC 192.168.1.3 192.168.1.1 PC-B NIC 192.168.0.3 192.168.0.1 R1 Objectives
Deploying Cisco UCS Central
This chapter includes the following sections: Obtaining the Cisco UCS Central Software from Cisco, page 1 Using the Cisco UCS Central OVA File, page 2 Using the Cisco UCS Central ISO File, page 4 Logging
Operation Manual Login and User Interface. Table of Contents
Table of Contents Table of Contents Chapter 1 Switch Login... 1-1 1.1 Setting Up Configuration Environment Through the Console Port... 1-1 1.2 Setting Up Configuration Environment Through Telnet... 1-2
Chapter 11: Networks
Chapter 11: Networks Devices in a Small Network Small Network A small network can comprise a few users, one router, one switch. A Typical Small Network Topology looks like this: Device Selection Factors
Configure Dynamic Host Configuration Protocol (DHCP) Image Upgrade Settings on a Switch through the Command Line Interface (CLI)
Configure Dynamic Host Configuration Protocol (DHCP) Image Upgrade Settings on a Switch through the Command Line Interface (CLI) Objective The Dynamic Host Configuration Protocol (DHCP) image upgrade feature