This article will cover a few points that you will be tested for the CCNA regarding the configuration of basic Cisco IOS router operation. IOS (Internetwork Operating System) is the software operating system running on most Cisco network devices, including switches and routers. To configure any Cisco network device you need to master the Cisco IOS Configuration Commands and use the Command Line Interface (CLI) to configure and troubleshoot a Cisco device.
How to connect to a Router in order to Configure it:
Power Tool Router
You can connect to a Cisco IOS Router either directly or remotely. For the first time when the device is not configured yet, you usually connect directly with a console cable via the CON port or remotely by dialing into a modem connected to the AUX port. These are called "out-of-band" connection methods. After you configure the router and assign IP addresses to its interfaces, you can connect to the router from the network with an "in-band" connection method using Telnet or SSH.
Router Configuration Modes
After connecting to a Cisco Router (let's say using a console), you are presented with the Command Line Interface in which you type and enter configuration commands. After typing a command, you press enter and the command is automatically active on the device. For example using the "shutdown" command on an interface, automatically disables the interface. Now, there are two Router Configuration Modes (or access modes):
User EXEC Mode: Allows the administrator to access only limited monitoring commands. You can not actually make any configurations from this mode. The command prompt on this mode is "router>" Privileged EXEC Mode: Allows the administrator to access all device commands, such as those used for configuration and management, and can be password protected to allow only authorized users to access the device at this "full-access" level. This mode is also called enable mode because you get to it with the enable command. The command prompt on this mode is "router#". From the privileged EXEC mode you can start configuring the device by typing "configure terminal".
Router Memory Types
A Cisco router has four memory types:
ROM: This is where the POST script of the router is located. The POST software (Power On Self Test) is used during startup to perform the initial hardware checking of the device. The ROM also holds a mini-IOS used for password recovery. RAM: This is where the running configuration is located. After the device boots up, the IOS software is loaded into RAM. Also, RAM holds routing tables, network parameters during operation etc. When configuring the router, we actually change the running-configuration which as we said is stored into RAM NVRAM: When we save the running-configuration (using the command "write") it is stored into the NVRAM and becomes the startup-configuration. After rebooting the router, the startup-configuration is loaded from the NVRAM. Flash: This is like the hard-disk of a PC. It holds the IOS software image file and any backup configurations that you might save from time to time.
When you issue the "show running-configuration" command on the router you instruct the device to display the current running configuration in RAM. When you issue the "show startup-configuration" command you instruct the router to display the stored configuration in the NVRAM.
Christmas Sales Black & Decker RTX-6 2 Amp 3-Speed Rotary Tool with 30 Accessories and 2 Spring Clamps 201
Dec 09, 2011 08:58:49
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Christmas Sales Black & Decker RTX-6 2 Amp 3-Speed Rotary Tool with 30 Accessories and 2 Spring Clamps Feature
- Rotary tool includes 30 accessories to perform wide variety of task
- 2 Amp, high torque motor provides superior power
- 3 adjustable speeds (12,000/24,000/30,000 RPM) for precision work
- Flip-Lock system makes for quick and easy accessory change outs
- 2-year warranty
Christmas Sales Black & Decker RTX-6 2 Amp 3-Speed Rotary Tool with 30 Accessories and 2 Spring Clamps Overview
The Black & Decker 3-speed rotary tool is created with a high-torque 2 amp motor so it finishes jobs quickly and efficiently -- without bogging down under the load. Versatile, rugged, and loaded with convenience features, this hardy rotary tool will make short work of all your fine detail jobs, craft projects, workshop and household tasks.The RTX-6 boasts an exclusive Flip-Lock spindle lock system for quick and easy accessory changes, eliminating the need to hold down an awkward button as you try to switch heads. And you'll have a lot of heads to choose from -- because the universal collet system accepts all standard rotary tool accessories. So don't worry about buying special bits, tips, or attachments. This tool accepts any rotary tool add-on you can think of, so the number of potential applications is almost limitless.
This outstanding tool offers three speed settings for maximum precision and versatility, no matter the project. With speeds -- 12,000/24,000/30,000 rpm -- you can customize the power to the project at hand; and the separate 3-speed dial means you can set it and forget about it. Also, the rubber overmolded grip keeps your hands comfortable and your accuracy high, because a tool that's easy to hold is easy to maneuver. This kit includes 27 accessories, 2 clamps, and a soft bag to keep it all together and organized. -- Cherie Priest
Applications:
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What's in the box:
Black & Decker rotary tool, 27 accessories plus the 2 clamps, soft-sided bag with accessory compartment, user guide, and wrench.
Christmas Sales Black & Decker RTX-6 2 Amp 3-Speed Rotary Tool with 30 Accessories and 2 Spring Clamps Specifications
The Black & Decker RTX-6 2 Amp 3-Speed Rotary Tool offers superior power and versatility, allowing you to perform a wide variety of jobs with maximum convenience. Its high-torque 2 Amp motor gives you enough power to complete jobs faster than most other tools on the market and without getting bogged down, and with three adjustable speeds (12,000/24,000/30,000 RPM) this tool delivers precision work. Rubber overmolded grips offer comfort, protection, and greater control. This rotary tool also comes with 27 accessories and 2 clamps to perform a wide variety of tasks--cutting, sanding, grinding, carving, polishing, and much more--and for the maximum in convenience, it features a universal collet system to accept any standard rotary tool accessory. Its exclusive "Flip-Lock" system makes switching between accessories quick and easy. The rotary tool also includes a wrench, two clamps, and a soft-sided bag with room for accessories. It is covered by a two-year warranty.SAVE NOW on Christmas Sales Offers below!
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