Show mac address of a cisco switch interface

#Show mac address of a cisco switch interface software#
#Show mac address of a cisco switch interface series#

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.

#Show mac address of a cisco switch interface software#

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 вЂњonвЂќ and вЂњoffвЂќ 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.

#Show mac address of a cisco switch interface series#

The initialization process includes a series of system startup routines that initiate the software and make these functions available. Initial Startup of the Catalyst SwitchД¬isco 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.