Cisco 3750 switch console

When we think of connectivity in a network, the router is probably the first device that comes to mind, but switches play a vital role in enabling network devices to communicate.

You also want to check the physical state of the device and verify that none of the cables are damaged. If for any reason putty is not an option for your setup, you can get similar results with a PuTTY alternative. To start configuration, you want to connect the switch console to PuTTY.

How to Configure Cisco Switches: A step-by-step Command guide

You can do this by doing the following:. You can make the switch easier to locate in the network by assigning a hostname. Enter the following command to assign a hostname:. To assign an administrator password to enter the following command:.

The next step is to configure passwords for Telnet and console access. Configuring passwords for these is important because it makes your switch more secure. If someone without authorization gains telnet access then it puts your network at serious risk. You can configure passwords by entering the following lines See the top paragraph for Telnet and the bottom paragraph for Console access.

ACLs ensure that only the administrator can connect to the router through Telnet. Next, you need to configure a network management IP address.

cisco 3750 switch console

You can do this by entering the following command:. At this stage, you want to assign a default gateway to the switch. The default gateway is essentially the address of the router that the switch will be communicating with.

To assign the default gateway, enter the command below change the IP address to that of your router. As a best practice, it is a good idea to disable any unused open ports on the switch.

Cybercriminals often use unsecured ports as a way to breach a network. Closing these ports down reduces the number of entry points into your network and makes your switch more secure.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up. The second one doesn't ever boot to the point where it displays anything on the console.

When power cycled, the 'SYST' light flashes green a few times, then comes on a solid green and stays lit. None of the other lights ever flash or light up. Holding down the 'MODE' button for up to 30 seconds produces no noticeable effects.

Nothing ever comes out on the console. Since I was able to configure the first one without any problems, I know my connectinon is good -- console port configured right, good cable, etc. Is this just a hardware problem with the switch? Is there any way I can recover from this and get the switch back into a state where I can configure it?

If booting while MODE is held down doesn't produce any output via the serial console, and you have the right cable and terminal settings for your device which you should be able to find from ciscothen I would tend to blame a hardware issue.

There's a few more things to try. Sometimes, people reconfigure the console speed and that's read as part of the boot process, so you wouldn't necessarily see anything on the screen on boot. If the switch actually switches packets, it may still have CDP enabled on one or more ports and you should be able to see what it considers to be its management IP by looking at the CDP packets.

Leave a packet sniffer attached to a working switch port for a few minutes and you'll be able to see what come sthrough. Alternatively, try a few different speed settings and see if anything actually produces any results. Of course, if it's not switching packets when on, it's probably bust, but from a brief reading, I would've thought that changed console port speed would be enough to explain the problems you've seen. Sign up to join this community.

The best answers are voted up and rise to the top. How to get access to console to reset Cisco ?This guide provides instructions on how to use Express Setup to initially configure your Catalyst switch. Also covered are switch management options, basic rack-mounting procedures, stacking procedures, port and module connection procedures, power connection procedures, and troubleshooting help. For system requirements, important notes, limitations, open and resolved bugs, and last-minute documentation updates, see the release notes, also on Cisco.

When using the online publications, refer to the documents that match the Cisco IOS software version running on the switch. The software version is on the Cisco IOS label on the switch rear panel.

For translations of the warnings that appear in this publication, see the Regulatory Compliance and Safety Information for the Catalyst Switch that accompanies this guide. Unpack and remove the switch and the accessory kit from the shipping box.

Return the packing material to the shipping container, and save it for future use. If any item is missing or damaged, contact your Cisco representative or reseller for instructions. Note If you do not specify the length of the StackWise cable, the 0. When you first set up the switch, you should use Express Setup to enter the initial IP information.

This enables the switch to connect to local routers and the Internet. You can then access the switch through the IP address for further configuration. Power the switch by connecting the supplied AC power cord to the switch power connector and to a grounded AC outlet. When the switch powers on, it begins the power-on self-test POST. POST errors are usually fatal. If the LEDs left of the Mode button begin to blink after you press the button, release it. Blinking LEDs mean that the switch has already been configured and cannot go into Express Setup mode.

For more information, see the "Resetting the Switch" section. Start a web browser on your PC. Enter the IP address The Express Setup page appears. If it does not appear, see the "In Case of Difficulty" section for help.

The password can be from 1 to 25 alphanumeric characters, can start with a number, is case sensitive, allows embedded spaces, but does not allow spaces at the beginning or end. In the Confirm Switch Password field, enter your password again.

Optional You can enter the Optional Settings information now or enter it later by using the device manager interface:. The host name is limited to 31 characters. Embedded spaces are not allowed. Click Enable to enable daylight saving time.Obtaining Documentation and Submitting a Service Request.

This guide describes how to use Express Setup to initially configure your Catalyst switch. It also covers switch management options, basic rack-mounting, stacking, port and module connections, and troubleshooting. For more installation and configuration information, see the Catalyst X and X documentation on Cisco. For system requirements, important notes, limitations, open and resolved bugs, and documentation updates, see the release notes on Cisco.

When using the online publications, refer to the documents that match the Cisco IOS software version running on the switch. For translations of the warnings that appear in this publication, see the Regulatory Compliance and Safety Information for the Catalyst X and X Switches on Cisco. Optional RJ console cable 2. Optional USB console cable 2. Optional StackWise cable 0.

Optional StackPower cable 0. Catalyst WS-CX switch shown. Your switch model might look different. Item is orderable. Note Verify that you have received these items. If any item is missing or damaged, contact your Cisco representative or reseller for instructions.

You should use Express Setup to enter the initial IP information. This enables the switch to connect to local routers and the Internet. You can access the switch through the IP address for further configuration. Note Before running Express Setup, disable any pop-up blockers or proxy settings in your browser and any wireless client running on your PC. Note Write down the static IP address.

You will need this IP address in Step DC power switches: See the wiring instructions in the hardware installation guide on Cisco. Approximately 30 seconds after the switch powers on, it begins the power-on self-test POSTwhich can take up to 5 minutes to complete. The switch failed the power-on self-test POST.This appendix provides a CLI-based setup procedure for a Catalyst X and X standalone switch or a switch stack.

Initial configuration of a Cisco Switch

You can access the CLI on an unconfigured switch by placing the switch in Express Setup mode and then connecting a switch Ethernet port or the Ethernet management port to the Ethernet port of your PC or workstation. To put the switch into Express Setup mode, follow the steps described in the getting started guide for powering on the switch and using Express Setup. When the switch is in Express Setup mode, open a Telnet session to the switch by entering the IP address Enter the setup user EXEC command.

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Enter the information described in the "Entering the Initial Configuration Information" section. After you have entered the configuration information for the switch, save it to flash memory by using the write memory privileged EXEC command. You lose the Telnet connection after entering the write memory command.

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For more information about using the CLI, see the command reference for this release. You can perform the initial configuration for the entire stack on any switch in the stack. Connect the other end of the cable to the switch console port. The program, frequently a PC application, such as HyperTerminal or ProcommPlus, makes communication between the switch and your PC or terminal possible. Press Enter to display the setup prompt.

Follow the steps in the "Configuring the Setup Program" section. Connect the other end of the cable to the switch mini-B 5-pin-connector USB console port. The program, frequently a PC application such as HyperTerminal or ProcommPlus, makes communication between the switch and your PC or terminal possible.

Note You can download the driver file from the Cisco. If using bit Windows XP, double-click the setup x Click Install. Click Finish.

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Follow the instructions to complete the driver installation. Click Next. Note Disconnect the switch console terminal before uninstalling the driver.

To set up the switch, you need to complete the setup program, which runs automatically after the switch is powered on. You must assign an IP address and other configuration information necessary for the switch to communicate with the local routers and the Internet. This information is also needed to use the device manager or Cisco Network Assistant to configure and manage the switch. If your switches are stacked and there are multiple console connections to individual switches in the stack, the initial setup dialog appears at the console where you first press Enter.

On a command switch, the host name is limited to 28 characters and on a member switch to 31 characters. Do not use -nwhere n is a number, as the last character in a host name for any switch. The password can be from 1 to 25 alphanumeric characters, can start with a number, is case sensitive, allows spaces, but ignores leading spaces.

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cisco 3750 switch console

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Catalyst 3750 Switch Getting Started Guide

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