Configuring the Switch with the CLI-Based Setup Program
This chapter provides a quick step-by-step installation and setup procedure for a switch.
Note For detailed installation procedures on rack mounting your switch or connecting to the small form-factor pluggable (SFP) modules, see Chapter 2 "Switch Installation." For product overview information, see Chapter 1 "Product Overview."
These steps describe how to do a simple installation:
1. Taking Out What You Need
2. Connecting to the Console Port
3. Starting the Terminal-Emulation Software
4. Connecting to a Power Source
5. Entering the Initial Configuration Information
6. Connecting to an Ethernet Port
Taking Out What You Need
Remove the items shown in Figure C-1 from the shipping container:
Figure C-1 The Catalyst 3750 Metro Switch, Adapter Cable, and AC Power Cord
AC power cord
RJ-45-to-DB-9 adapter cable
Note If you are using a DC power supply, see the "Connecting to DC Power" section for more information about setting up your switch with a DC power supply.
Note You need to provide the Category 5 or higher straight-through cables to connect the switch ports to other Ethernet devices.
Connecting to the Console Port
You can use the console port to perform the initial configuration. To connect the switch console port to a PC, use the supplied RJ-45-to-DB-9 adapter cable.
Follow these steps to connect the PC or terminal to the switch:
Step 1 Using the supplied RJ-45-to-DB-9 adapter cable, insert the RJ-45 connector into the console port that is located on the front of the switch, as shown in Figure C-2.
Step 2 Attach the DB-9 female DTE of the adapter cable to a PC serial port, or attach an appropriate adapter to the terminal.
Figure C-2 Connecting a Switch to a PC
RJ-45-to-DB-9 adapter cable
Starting the Terminal-Emulation Software
Before you power on the switch, start the terminal-emulation session so that you can see the output display from the power-on self-test (POST).
The terminal-emulation software—frequently a PC application such as Hyperterminal or ProcommPlus—makes communication between the switch and your PC or terminal possible.
Step 1 Start the terminal-emulation program if you are using a PC or terminal.
Step 2 Start a terminal-emulation session.
Step 3 Configure the baud rate and character format of the PC or terminal to match these console port default characteristics:
•8 data bits
•1 stop bit
•None (flow control)
Connecting to a Power Source
Follow these steps to connect to a power source:
Step 1 If you are using an AC power supply, connect one end of the supplied AC power cord to the power connector on the switch rear panel, and then connect the other end of the power cable to a grounded AC outlet. (See Figure C-2.)
Step 2 If you are using a DC power supply, see the "Connecting to DC Power" section for instructions on how to install the DC power supply.
As the switch powers on, it begins the POST, a series of tests that runs automatically to ensure that the switch functions properly.
POST lasts approximately 1 minute. After POST is complete, the system and status LEDs remain green. The power and master LEDs might also be green, depending on their functional status (see the "LEDs" section for more information).
If the switch fails POST, the system LED turns amber. If the POST fails, see Chapter 4 "Troubleshooting," to decide on a course of action.
Note POST failures are usually fatal. Call Cisco Systems if your switch does not pass POST.
If you started the terminal-emulation program before you powered on your switch, the PC or terminal displays the bootloader sequence. You need to press Enter to display the setup program prompt.
Entering the Initial Configuration Information
To set up the switch, you need to complete the setup program, which runs automatically after the switch is powered up. You must assign an IP address and other configuration information necessary for the switch to communicate with the local routers and the Internet.
You will need this information from your network administrator before you complete the setup program:
•Switch IP address
•Subnet mask (IP netmask)
•Default gateway (router)
•Enable secret password
Completing the Setup Program
Follow these steps to complete the setup program and to create an initial configuration for the switch:
Step 1 Enter Yes at these two prompts:
Would you like to enter the initial configuration dialog? [yes/no]: yes
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets ''.
Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the system.
Would you like to enter basic management setup? [yes/no]: yes
Step 2 Enter a host name for the switch, and press Return.
The host name is limited to 28 characters. Do not use -n, where n is a number, as the last character in a host name for any switch.
Enter host name [Switch]: host_name
Step 3 Enter an enable secret password, and press Return.
The password can be from 1 to 25 alphanumeric characters, can start with a number, is case sensitive, allows spaces, but ignores leading spaces. The secret password is encrypted and the enable password is in plain text.
Enter enable secret: secret_password
Step 4 Enter an enable password, and press Return.
Enter enable password: enable_password
Step 5 Enter a virtual terminal (Telnet) password, and press Return.
The password can be from 1 to 25 alphanumeric characters, is case sensitive, allows spaces, but ignores leading spaces.
Enter virtual terminal password: terminal-password
Step 6 (Optional) Configure Simple Network Management Protocol (SNMP) by responding to the prompts. You can also configure SNMP later through the CLI interface. To configure SNMP later, enter no.
Configure SNMP Network Management? [no]: no
Step 7 Enter the interface name (physical interface or VLAN name) of the interface that connects to the management network, and press Return. For this release, always use vlan1 as that interface.
Enter interface name used to connect to the
management network from the above interface summary: vlan1
Step 8 Configure the interface by entering the switch IP address and subnet mask and pressing Return. The IP address and subnet masks shown below are examples.
Configuring interface vlan1:
Configure IP on this interface? [yes]: yes
IP address for this interface: 10.4.120.106
Subnet mask for this interface [255.0.0.0]: 255.0.0.0
Step 9 Enter N in this step because you cannot configure this switch as the command switch in a cluster.
Would you like to enable as a cluster command switch? [yes/no]: no
You have now completed the initial configuration of the switch and the switch displays its initial configuration. This is an example of output that appears:
The following configuration command script was created:
enable secret 5 $1$Ulq8$DlA/OiaEbl90WcBPd9cOn1
enable password enable_password
ip address 10.4.120.106 255.0.0.0
These choices are displayed:
 Go to the IOS command prompt without saving this config.
 Return back to the setup without saving this config.
 Save this configuration to nvram and exit.
If you want to save the configuration and use it the next time the switch reboots, save it in NVRAM by selecting option 2.
Enter your selection :2
Step 10 Make your selection, and press Return.
After you complete the setup program, the switch can run the default configuration that you created. If you want to change this configuration or want to perform other management tasks, use the CLI.
To use the CLI, enter commands at the Switch> prompt through the console port by using a terminal program or through the network by using Telnet. For configuration information, refer to the switch software configuration guide or the switch command reference.
Connecting to an Ethernet Port
Follow these steps to connect to an 10/100 or 10/100/1000 Ethernet port:
Step 1 Connect a Category 5 straight-through cable (not supplied) to a 10/100 port on the front panel of a switch. See Figure C-3.
Step 2 Connect the other end of the cable to the Ethernet (RJ-45) port of the workstation, PC, server, or router.
Figure C-3 Connecting to a Front Panel Port
Category 5 straight-through cable
For information on connecting to the SFP ports, see the "Connecting to an SFP Module" section.