# The hierarchy of CLI cisco

> Explanation of the structures of the modes that make up the CLI cisco.

Published on 2021-09-14 | Updated on 2025-03-23 | Tags: cisco

https://xsec.fr/en/networking/cisco-cli/

---

import Callout from '@shared/components/Callout.astro'

The "Command Line Interface" of cisco is made up of several modes:

## The "User" mode

Allows only to make some basic commands.

```txt title="Switch>"
Switch>
```

## The "privileged" mode

Allows more information.
Like orders `SHOW 'in particular.

```txt title="Switch#"
Switch#
```

## The "global configuration" mode

- also contains several sub-modes (detailed [here] (#Configuration-D-a Interface)).

```txt title="Switch(config)#"
Switch (config)
```

![Summary of the different modes and orders for each of them](/media/networking/iostree.png)

### Configuration of an interface

```txt title="Router(config)#"
Router (Config)#
Gigabitethernet0/0 interface
```

Gigabitethernet0/0 is here, the name of the interface (physical or logical), in which we return.
If you do not know the name of your interface, use the `SHOW interfaces' ** command in Enable ** mode.
You can use the interface command? `To see all possible actions.

`Router (Config-IF)#` is displayed after execution of the command.

```txt title="Router(config-if)#"
IP Address 192.168.1.1 255.255.255.0
```

Allows you to send the interface.

<Callout variant="warning">
** Do not forget `No Shutdown 'to start the interface. **
</Callout>

### Configuration of several interfaces with ranges

```txt title="Router(config)#"
Gigabitethernet0/0-2
```

```txt title="Router(config-if-range)#"
no shut
```

Starts Gigabitethernet0/0, Gigabitethernet0/1 and Gigabitethernet0/2 interfaces.

### Configuration of a line

```txt title="Router(config)#"
LINE VTY 0 1
```

`Router (Config-line)#` is displayed after execution of the command.

The "lines" allow remote access to the equipment.
Passing through Telnet (in clear) or SSH (encrypted).
You can use the ```command to see all possible actions.

### Router Configuration

```txt title="Router(config)#"
Router Ospf
```

`Router` Configure the router to do here, OSPF.
The possible options are routing protocols between routers.
You can use the command `Router?` To see all the available protocols.

`Router (Config-router)#` is displayed after execution of the command.