subject: Cisco Router/switch Ios [print this page] Cisco Routers use the Internetwork Operating System(IOS) to control and manage the hardware it is running on.IOS provides the interface between the user and the hardware, enabling the user to execute the command to configure and manage the device using Command Line Interface (CLI.)
Cisco IOS Features:
1. Command Line Interface (CLI)
a. User EXEC Mode
b. Privileged EXEC Mode
c. Global Configuration Mode
d. Sub-Configuration Mode
2. Router Interface Configuration
3. RIP Configuration Using Cisco IOS
1. Command Line Interface (CLI)
The CLI is a character or text based interface used to configure or monitor the deviceit supports a command parser, whenever enter is pressed after typing the command IOS parses the command and parameters that you enterd and checks for correct syntax..There are many of accessing the IOS CLI like using console,auxiliary,telnet,web browser and an SNMP mnagment station, but most common way of accessing is through console.
IOS supports three different access modes for interaction with CLI:
1) User Exec---provides basic access to the IOS which includes monitoring and troubleshooting commands
