Kretanje između IOS načina rada

Summary

This video covers essential commands for navigating between different IOS command modes in a Cisco switch. It explains how to move from user exec mode to privilege exec mode using 'enable' and back with 'disable'. The video also demonstrates entering global configuration mode with 'configure terminal' and sub-configuration modes like line console and interface mode. It highlights how to efficiently switch between these modes using 'exit', 'end', or Control-Z, and emphasizes the importance of mastering these commands to save time while configuring a network switch.

Takeaways

• ⚙️ The 'enable' command moves you from user EXEC mode to privileged EXEC mode.
• 🔄 The 'disable' command returns you from privileged EXEC mode to user EXEC mode.
• 🔧 To configure the switch, you enter Global Configuration mode using the 'configure terminal' command.
• 🚪 The 'exit' command can be used to exit different modes, returning to the previous mode or closing the console session entirely.
• ⏩ You can use 'config t' as a shorthand for 'configure terminal' to quickly enter Global Configuration mode.
• 🔀 Moving between subconfiguration modes, like 'line console 0' and 'interface VLAN 1', changes the prompt to reflect the current mode.
• 🌐 'line vty 0 15' accesses virtual terminal management interfaces, used for remote access to the switch.
• 🔄 You can move directly between different subconfiguration modes without exiting back to global configuration mode.
• ⌨️ 'Ctrl + Z' is a quick way to exit all subconfiguration modes and return to privileged EXEC mode.
• ⏲️ Efficient navigation between command modes (user, privileged EXEC, global config, and subconfig) saves time during switch configuration.

Q & A

What command is used to move from user exec mode to privileged exec mode?

The 'enable' command is used to move from user exec mode to privileged exec mode.

How can you return from privileged exec mode to user exec mode?

You can return to user exec mode by typing the 'disable' command.

What is the purpose of the 'configure terminal' command?

The 'configure terminal' command is used to enter Global Configuration mode, where switch configurations can be made.

How do you exit Global Configuration mode and return to privileged exec mode?

You can exit Global Configuration mode by typing 'exit' or pressing 'Ctrl+Z' on your keyboard.

What command is used to enter the console port management interface?

To enter the console port management interface, you can use the 'line console 0' command.

What is the function of the 'line vty 0 15' command?

The 'line vty 0 15' command is used to enter the virtual terminal management interface for remote administrative access to the switch.

How can you switch between different sub-configuration modes directly?

You can switch between sub-configuration modes directly by typing the command for the next sub-configuration mode, such as 'interface VLAN 1' or 'interface fast ethernet 0/1'.

What happens when you type 'end' while in any sub-configuration mode?

Typing 'end' will exit all sub-configuration modes and return you to privileged exec mode.

What is the shortcut for returning to privileged exec mode from any sub-configuration mode?

The shortcut to return to privileged exec mode from any sub-configuration mode is pressing 'Ctrl+Z'.

Why is it important to navigate efficiently between different command modes?

Efficient navigation between different command modes saves time and makes switch management more streamlined, especially when making multiple configuration changes.

Outlines

00:00

🚀 Navigating Command Modes in Cisco IOS

This section introduces the different Cisco IOS command modes and how to navigate between them using commands such as `enable`, `disable`, `configure terminal`, `exit`, and `control + Z`. The user starts in 'user exec mode' and transitions to 'privileged exec mode' by typing `enable`. To return to 'user exec mode', the `disable` command is used. The speaker explains how to enter 'global configuration mode' using `configure terminal` and how to exit it using `exit`, returning to the previous mode. A console connection is also demonstrated, showing how pressing 'enter' reconnects to the switch's command line interface.

🔧 Exploring Sub-Configuration Modes

This part covers entering various sub-configuration modes like `line console 0` for managing the console port, and `line vty 0 15` for virtual terminal management interfaces, which allow remote access to the switch. The user transitions between different sub-configuration modes without needing to exit, for example, moving directly from `line configuration mode` to `interface configuration mode` using commands such as `interface vlan 1` and `interface fastethernet 0/1`. Each transition is highlighted by the prompt changes, signaling the user's current mode.

🔄 Exiting and Returning to Privileged Exec Mode

This section describes how to exit sub-configuration modes and return to 'privileged exec mode' using either the `end` command or `control + Z`. The speaker demonstrates the flow by typing `end`, which brings them back to the 'privileged exec mode'. Additionally, using `control + Z` also serves the same purpose, exiting all sub-configuration modes and returning the user to the privileged exec prompt. This flexibility allows for quicker navigation when moving between configurations.

⏱ Mastering Efficient Mode Navigation

The final part emphasizes the importance of efficiently navigating between command modes in Cisco IOS. By mastering these commands and shortcuts (`enable`, `configure terminal`, `exit`, `end`, `control + Z`), users can significantly speed up their configuration tasks. The speaker reaffirms the convenience of moving between global configuration and sub-configuration modes seamlessly, helping save time during administrative tasks.

Keywords

💡User EXEC mode

User EXEC mode is the initial mode a user enters when connecting to a Cisco device, such as a switch. This mode provides limited access to basic monitoring commands. In the video, the user begins in this mode and types 'enable' to enter Privileged EXEC mode, highlighting its role as the starting point for accessing higher command levels.

💡Privileged EXEC mode

Privileged EXEC mode provides access to all commands on the Cisco device, including configuration and troubleshooting commands. In the video, the user types 'enable' to move into this mode from User EXEC mode, enabling them to configure the switch and perform more advanced tasks.

💡Enable command

The 'enable' command is used to move from User EXEC mode to Privileged EXEC mode. This transition is important for gaining administrative access to the device. The video shows this command being used multiple times to enter Privileged EXEC mode, allowing the user to configure the device.

💡Disable command

The 'disable' command is used to exit Privileged EXEC mode and return to User EXEC mode. In the video, after typing 'enable' to enter Privileged EXEC mode, the user can type 'disable' to revert to the more limited User EXEC mode.

💡Global configuration mode

Global configuration mode is where changes to the device's overall configuration are made. Commands in this mode affect the entire system. The video illustrates how the user types 'configure terminal' to enter this mode, which allows them to make global adjustments to the switch settings.

💡Subconfiguration modes

Subconfiguration modes, such as line configuration or interface configuration, allow users to configure specific parts of the device. In the video, examples include 'line console 0' and 'interface VLAN 1', which let the user adjust specific console and interface settings.

💡Line configuration mode

Line configuration mode is used to configure terminal lines on the device, such as console or virtual terminal lines (vty). In the video, the user enters this mode by typing 'line console 0', which lets them manage the console port settings for the switch.

💡VTY (Virtual Terminal Lines)

VTY refers to the virtual terminal lines used for remote administrative access to the device. In the video, the user types 'line vty 0 15' to configure these lines, which are critical for managing devices remotely through protocols like SSH or Telnet.

💡Control + Z

Control + Z is a keyboard shortcut used to exit configuration modes and return to Privileged EXEC mode. In the video, the user demonstrates how pressing Control + Z allows them to quickly navigate back to Privileged EXEC mode from any subconfiguration mode, providing a shortcut for efficient navigation.

💡Interface configuration mode

Interface configuration mode is used to configure specific network interfaces on the device, such as Ethernet or VLAN interfaces. In the video, the user enters this mode by typing 'interface VLAN 1' and 'interface fastethernet 0/1', allowing them to configure specific ports and network connections on the switch.

Highlights

The user starts in user exec mode, denoted by the initial prompt.

To enter privileged exec mode, the 'enable' command is used.

Returning to user exec mode is achieved with the 'disable' command.

The 'configure terminal' command is used to enter global configuration mode.

Exiting global configuration mode brings the user back to privileged exec mode using the 'exit' command.

Re-establishing the console connection is done by pressing 'Enter' on the keyboard.

The 'line console 0' command is used to manage the console port in a subconfiguration mode.

Switching from one subconfiguration mode to another is done without exiting by typing commands like 'line vty 0 15' for virtual terminal management.

'Interface VLAN 1' is used to enter interface configuration mode for managing VLAN interfaces.

'Interface fastethernet 0/1' puts the user in the specific configuration mode for the first fast ethernet interface.

Commands in global config mode can also be executed from subconfiguration modes without returning to the global mode.

The 'end' command or pressing 'Ctrl + Z' brings the user back to privileged exec mode from any configuration mode.

Efficiently moving between different command modes saves time, making navigation crucial when configuring devices.

Typing 'exit' multiple times successively can log the user out of the console connection entirely.

Using 'Ctrl + Z' allows a quick return to privileged exec mode from global or subconfiguration modes.

Transcripts

let's look at the commands that are used

to move between the different IOS

command modes we'll look at the enable

command the disable command configure

terminal exit and using contrl Z on your

keyboard plus some commands to enter

different subc configuration modes I

have a console connection to a switch so

I'll click on pc1 and press enter

and it takes me to user exec mode notice

the prompt at the lower left of the

screen to enter privilege exec mode I

type enable if I want to return back to

user exec mode I can type

disable I'll type enable to return to

privilege exec mode in order to

configure the switch I need to first get

to Global configuration mode or Global

config I'll type configure terminal

and you can see now that I'm in the

global configuration prompt I can type

exit and press enter to return to

privilege exec mode if I type exit again

I leave my console connection Al

together to reenter the switch and get a

command line interface I have to press

enter on my keyboard and now I'm brought

back to the console connection with the

Switch I'll type enable and press enter

and then then config T short for

configure terminal and now I'm back in

global config mode Let's enter one of

the subc configuration modes I'll type

line console 0 to get to the management

interface for the console Port now that

I'm in a subc configuration mode if I

type exit I return to Global config mode

this time I'll type line vty Z space 15

for my virtual terminal management

interfaces these are used for remote

administrative access to the switch I

can move directly from one

subconfigurations mode to another notice

if I type

in interface VLAN 1 and press enter that

my prompt has changed from line

configuration mode to interface

configuration mode from here I can also

enter different interfaces like

interface fast

ethernet

01 and as long as I don't see an error

message that I've typed an invalid

command I'm in interface config mode for

fast ethernet

01 I can also move directly to the line

console 0o commands that are normally

run in global config mode can also be

run from any of the subc configuration

modes as well if I want to exit out of

all subc configuration modes and return

to privileged exec mode I can use the N

command or press contrl Z on my keyboard

let's give that a try I'll type end

press enter enter again and you can see

now that I've returned all the way back

to privileged exec mode I'll return to

Global configuration

mode and then into line console 0 and

this time I'll hold down the control key

and press Z and if I press enter you can

see that I'm brought all the way back to

privilege exec mode if I'm in global

configuration mode and I type

end and press enter I'm also brought

back to privilege exec mode learning to

navigate efficiently between the

different command modes will save you a

lot of time