How to enter the cisco router configuration mode

The command line port of a cisco router uses a hierarchical structure, which requires logging on to different modes to complete detailed configuration tasks. From a security perspective, cisco IOS divides EXEC sessions into USER mode and privileged mode.

Features of the USER mode:

In USER mode, only basic monitoring commands are allowed. In this mode, the configuration of the router cannot be changed. The command prompt of router> is in USER mode.

Features of the privileged mode:

In privileged mode, you can use all the configuration commands. In user mode, a password is generally required to access privileged mode. In router #, the command prompt indicates that the user is in privileged mode.

Cisco router configuration mode

In user mode, you can only display router information, but cannot change the configurations of any vro. To use all commands, you must enter the privileged mode. In privileged mode, you can also enter global mode and other special configuration modes, which are a subset of global mode.

How to enter privileged Mode

After the first successful startup, the cisco router prompts the user mode prompt router>. If you want to enter the privileged mode, you do not need a password when you type the enable command to start the router for the first time ). At this time, the command prompt of the router is changed to router #.

How to enter global Mode

After entering the privileged mode, we can enter the configure terminal command at the privileged command prompt to perform the global configuration mode.

How to enter the port configuration mode

Enter interface e 0 at the global command prompt to enter the first Ethernet port, and enter interface serial 0 to enter the first serial line port.

The above briefly introduces how to enter the various configuration modes of the Cisco router. Of course, other special configuration modes can be entered in global mode. In the configuration process, we can use? To obtain command help.