In this discussion, we will be exploring the topic of entering global configuration mode on an iOS router. Specifically, we will be looking at the command that is used to access this mode on an iOS router.

Understanding Global Configuration Mode

Global Configuration mode is the IOS configuration mode that allows users to configure their routers. It is the mode where users can configure most router settings, and it is a critical mode for network administrators. In Global Configuration mode, users can configure almost all router settings, including interfaces, routing protocols, and access control lists.

However, before you can configure your router, you need to know how to access Global Configuration mode. In this article, we will examine the command used to enter Global Configuration mode on an IOS router.

Accessing Global Configuration Mode

The command used to enter Global Configuration mode on an IOS router is configure terminal. This command is used to enter configuration mode, where users can configure their routers.

Once you enter the configure terminal command, the prompt will change to reflect that you are in Global Configuration mode. The prompt will show the hostname followed by (config)#, indicating that you can now configure the router’s settings.

Key takeaway: The command used to enter Global Configuration mode on an IOS router is ‘configure terminal’. This mode allows users to configure most router settings, including interfaces, routing protocols, and access control lists. Other IOS configuration modes include User EXEC Mode, Privileged EXEC Mode, Interface Configuration Mode, and Line Configuration Mode.

Using the Tab Key

Another way to enter Global Configuration mode is to use the Tab key. After logging into the router’s console, you can type conf t and press the Tab key. The IOS will autocomplete the command, and you will enter Global Configuration mode.

Using Other Commands to Enter Global Configuration Mode

There are other commands you can use to enter Global Configuration mode on an IOS router. These commands include:

  • configure
  • config
  • conf
  • configure mem
  • configure replace
  • configure network
  • configure net

However, the most common and widely used command to enter Global Configuration mode is configure terminal.

Other IOS Configuration Modes

There are other IOS configuration modes besides Global Configuration mode. These modes include:

User EXEC Mode

User EXEC mode is the default mode when you log in to a router. In this mode, you can view the router’s status and access some basic commands.

Privileged EXEC Mode

Privileged EXEC mode is the mode where you can access all the router’s commands. To enter Privileged EXEC mode, type enable and enter the enable password.

Interface Configuration Mode

Interface Configuration mode is the mode where you can configure router interfaces. To enter Interface Configuration mode, type interface followed by the interface name.

Line Configuration Mode

Line Configuration mode is the mode where you can configure router lines, such as console lines, VTY lines, and AUX lines. To enter Line Configuration mode, type line followed by the line type and number.

FAQs: What command is used to enter global configuration mode on an ios router?

What is global configuration mode on an iOS router?

Global configuration mode is a Cisco IOS operating system feature that enables network administrators to configure settings that apply to the entire system. It is essentially a mode of operation within the IOS command-line interface (CLI), which allows administrators to configure global parameters, such as hostname, IP addresses, and routing protocols.

What is the purpose of global configuration mode?

The purpose of global configuration mode is to provide a central configuration location for various IOS parameters, such as network settings, security, routing protocols, and services. This mode enables administrators to configure system-wide settings that apply to all interfaces, services or routing protocols, as well as to switch between configuration modes, or to access various configuration tabs.

How do I access the global configuration mode on an IOS router?

To access the global configuration mode on an IOS router, you must first connect to the router’s CLI using a console connection, telnet, SSH, or other connection method that supports the IOS command-line interface. Once connected, use the following command to enter global configuration mode: “configure terminal” or “conf t” for short. After entering this command, you will be prompted with the router’s configuration mode prompt (config#) indicating that you are in global configuration mode.

Is there any other way to enter global configuration mode?

Yes, there are several ways of entering global configuration mode on an IOS router. For instance, you can use the command “config” followed by the specific command in parentheses (such as “config hostname”), or enter “config” followed by “?” to see a list of available configuration commands. Another method is to use the “configure” command, followed by a specific command, such as “configure hostname” or “configure ip default-gateway”, without including “terminal.”

Are there any other configuration modes?

Yes, besides global configuration mode, Cisco IOS routers also have several other configuration modes, including privileged EXEC mode, user EXEC mode, interface configuration mode and line configuration mode. Privileged EXEC mode is used for configuration and management of the router, while user EXEC mode allows users to execute basic operational commands. Interface and line configuration modes are used for configuring device ports and lines. To access these modes, use specific commands such as “enable” to access privileged EXEC mode, or “line con 0” to access line configuration mode.

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