![]() User mode will again have a greater than sign as a prompt, whereas the privilege mode will have the pound sign. You will be then prompted for password if there is one, default is that there is no password, and then go into privilege mode and you can tell you are there because of the change in prompts. In order to go from user mode to privilege mode, you will have to use the enable command. So, it is a more dangerous mode and more powerful mode for the more power you said that will be managing and maintaining the switch. For example, you can copy configuration files from the network in privilege mode or you can simply erase configuration files and actually also erase the IOS image. The roles are user mode or privilege mode and again, user mode will have limited access to simply monitoring tools, whereas privilege mode will allow you to do monitoring and maintenance of the switch. Again, EXEC mode allows you to monitor, view, and maintain the switch, but it depends on the role that you have assigned. Once at the command-line interface, you will be located in EXEC mode. Loggin in to the Switch and Entering the Privileged EXEC Mode You could actually also invoke the setup mode by typing the setup command. After initialization has been completed, then you can get access to the command-line interface however, if the switch configuration files are empty, then the switch will go straight into setup mode and will start prompting you and asking you questions for basic configuration. It also shows the location of the image of the operating system, where is it being loaded from, and the status of the loading process. The IOS software output will show more specific information, among other things, the MAC address of the switch and the various stages of the initialization process. So depending on the model, for example, showing all port LEDs in green, 100% of them will mean that the switches are 50% capacity and different combinations will show different percentages. ![]() If you switch to say a utilization mode there, then the different ports will be green, displaying the approximate overall utilization of the switch in terms of throughput. For example, selecting the stat or status mode will show port LEDs in flashing green if there is a link and activity, but amber if the port has been shut down by the administrator or has been blocked by spanning tree, for example. The mode button will help you switch to different modes and the different modes will give you different meaning for the port LEDs right there. The port mode LEDs will display what the port LEDs mean at any given point in time. The redundant power supply LED will show flashing amber if the internal power supply failed and a redundant power supply is helping the switch. The system LED will be green if the system is powered on and operational but amber if there are errors in the power-on self-test or if there is system malfunction. The different LEDs will display valuable information in terms of the status and the capacity of the switch. ![]() This figure shows the LEDs on a Catalyst 2960. It is important to understand that this course is based on the Catalyst 2960 switch and that both the output and some of the commands may be different from other switches. You can then observe the boot sequence physically and from the outside by looking at the LEDs on the switch chassis and also through your console connection by looking at the IOS software output text, which displays some of the output of the diagnostics and the overall process of initiation. In these lower-end switches you do not have an "on" and "off" button like those you find in higher end distribution layer and core layer switches. In lower-end switches, simply attaching the power cable plug to the switch will start up and initiate the process. If you want to observe the process, you should verify that the cabling is consistent, that you have a console connection, and that you have a terminal client running on that console, for example, HyperTerminal or PuTTY. Default configuration parameters include a switch prompt, a basic definition on the interfaces, including having all of them enabled. The initialization process includes a series of system startup routines that initiate the software and make these functions available. Initial Startup of the Catalyst SwitchĬisco access layer switches are ready to go on providing connectivity on layer 2 functions at startup. We will then log into the switch, configure it via the command-line interface, and then verify the initial operation by using the appropriate show commands. In this lesson, we are going to describe the startup of a Cisco IOS switch and help you identify the steps by looking at LANs and initial boot output. We cannot configure a switch if it is not initialized.
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