Cisco WS-C3750G-24TS-S1U - Catalyst Switch -... User manual

GETTING STARTED GUIDE
Catalyst 3750 Switch Getting Started Guide
1About this Guide
2Taking Out What You Need
3Running Express Setup
4Managing the Switch
5Planning Switch Stacks
6Rack-Mounting
7In Case of Difficulty
8Obtaining Documentation, Obtaining Support, and Security Guidelines
9Cisco Warranty Information

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1 About this Guide
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 additional installation and configuration information for Catalyst 3750 switches, see the
Catalyst 3750 documentation on Cisco.com. For system requirements, important notes, limitations,
open and resolved bugs, and last-minute documentation updates, see the release notes, also on
Cisco.com.
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 3750 Switch that accompanies this guide.
2 Taking Out What You Need
Follow these steps:
1. Unpack and remove the switch and the accessory kit from the shipping box.
2. Return the packing material to the shipping container, and save it for future use.
3. Verify that you have received the items shown on page 3. If any item is missing or damaged,
contact your Cisco representative or reseller for instructions. Some switch models might include
additional items that are not shown on page 3.
Note If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied.
Equipment That You Supply to Run Express Setup
You need to supply this equipment to run Express Setup:
•PC
•Ethernet (Category 5) straight-through cable (as shown)

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Shipping Box Contents
Catalyst 3750 switch
Console cable
(optional)
Two 19-inch
mounting brackets
Four number-12 Phillips machine screws
Four number-8 Phillips truss-head screws
Six number-8 Phillips flat-head screws
Four rubber mounting feet
AC power cord
Connector cover for redundant
power system (RPS)
Two number-4 pan-head screws
Cable guide
One black Phillips machine screw
Documentation
0.5-meter, 1.0-meter or 3.0-meter
StackWise cable
207383
Catalyst 3750G
SERIES
SYST
RPS
STAT
DUPLX
SPEED
MODE
125678910 11 12 13 14 15 16
34
1X
2X
15X
16X
17 18 21 22 23 24 25 26 27 28 29 30 31 32
19 20
17X
18X
31X
32X
33 34 37 38 39 40 41 42 43 44 45 46 47 48
35 36
33X
34X
47X
48X
49
50
51
52
MASTR
STACK
Product
Documentation
and Compliance

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3 Running Express Setup
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.
To run Express Setup:
Step 1 Make sure that nothing is connected to the switch.
During Express Setup, the switch acts as a DHCP server. If your PC has a static IP address,
change your PC settings before you begin to temporarily use DHCP.
Step 2 Power the switch by connecting the supplied AC power cord to the switch power
connector and to a grounded AC outlet.
Step 3 When the switch powers on, it begins the power-on self-test (POST). During POST, the
LEDs blink while tests verify that the switch functions properly.
Wait for the switch to complete POST, which can take several minutes.
Step 4 Verify that POST has completed by confirming that the SYST LED remains green. If the
switch fails POST, the SYST LED turns amber.
POST errors are usually fatal. Contact your Cisco technical support representative if your
switch fails POST.
Step 5 Press and hold the Mode button for
3 seconds. When all of the LEDs left
of the Mode button turn green,
release the Mode button.
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.
Step 6 Verify that the switch is in Express Setup mode by confirming that all LEDs left of the
Mode button are green. (On some models, the RPS and PoE LEDs remain off.)
SYST
RPS
STAT
DUPLX
SPEED
PoE
MODE
125678910 11 12 13 14 15 16
34
1X
2X
15X
16X
Mode button

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Step 7 Connect a Category 5 Ethernet cable
to any 10/100 or 10/100/1000
Ethernet port on the switch front
panel.
Connect the other end of the cable to
the Ethernet port on your PC.
Step 8 Verify that the switch and PC Ethernet ports LEDs are green.
Wait 30 seconds.
Step 9 Start a web browser on your PC.
Enter the IP address 10.0.0.1 in the
web browser, and press Enter.
Step 10 The Express Setup page appears. If it does not appear, see the “In Case of Difficulty”
section for help.
Catalyst3560G
SERIES
PoE-48
MODE
12567891011 12 131415 16
34
1X
2X
15X
16X
1718 21 22 23 2425 26 27 28 293031 32
1920
17X
18X
31X
32X
33 34 3738 3940 4142 4344 45 464748
35 36
33X
34X
47X
48X
49
50
51
52
RPS
STAT
DUPLX
SPEED
MASTR
STACK
SYST
DHCP-enabled PC

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Step 11 Enter this information in the Network Settings fields:
•In the Management Interface (VLAN ID) field, the default is 1. Enter a new VLAN ID
only if you want to change the management interface through which you manage the
switch. The VLAN ID range is 1 to 1001.
•In the IP Address field, enter the IP address of the switch. In the IP Subnet Mask field,
click the drop-down arrow, and select an IP Subnet Mask.
•In the Default Gateway field, enter the IP address for the default gateway (router).
•Enter your password in the Switch Password field. 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.
Step 12 (Optional) You can enter the Optional Settings information now or enter it later by using
the device manager interface:
•In the Host Name field, enter a name for the switch. The host name is limited to 31
characters. Embedded spaces are not allowed.
•Enter the date, time, and time zone information in the System Date, System Time, and
Time Zone fields. Click Enable to enable daylight saving time.
Step 13 (Optional) Click the Advanced Settings tab on the Express Setup window, and enter the
advanced settings now or enter them later by using the device manager interface.

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Step 14 (Optional) Enter this information in the Advanced Setting fields:
•In the Telnet Access field, click Enable if you are going to use Telnet to manage the
switch by using the command-line interface (CLI). If you enable Telnet access, you
must enter a Telnet password.
•In the Telnet Password field, enter a password. The Telnet password can be from 1 to
25 alphanumeric characters, is case sensitive, allows embedded spaces, but does not
allow spaces at the beginning or end. In the Confirm Telnet Password field, re-enter
the Telnet password.
•In the SNMP field, click Enable to enable Simple Network Management Protocol
(SNMP). Enable SNMP only if you plan to manage switches by using
CiscoWorks 2000 or another SNMP-based network-management system.
•If you enable SNMP, you must enter a community string in the SNMP Read
Community field, the SNMP Write Community field, or both. SNMP community
strings authenticate access to MIB objects. Embedded spaces are not allowed in SNMP
community strings. When you set the SNMP read community, you can access SNMP
information, but you cannot modify it. When you set the SNMP write community, you
can both access and modify SNMP information.
•In the System Contact and System Location fields, enter a contact name and the wiring
closet, floor, or building where the switch is located.
Step 15 (Optional) You can enable Internet Protocol version 6 (IPv6) on the switch. From the
Advanced Settings tab, check the Enable IPv6 check box.
Note Enabling IPv6 restarts the switch when you complete Express Setup.
Step 16 To complete Express Setup, click Submit from the Basic Settings or the Advanced Settings
tab to save your settings, or click Cancel to clear your settings.
When you click Submit, the switch is configured and exits Express Setup mode. The PC
displays a warning message and tries to connect with the new switch IP address. If you
configured the switch with an IP address that is in a different subnet from the PC,
connectivity between the PC and the switch is lost.
Step 17 Disconnect the switch from the PC, and install the switch in your production network. See
the “Managing the Switch” section for information about configuring and managing the
switch.
If you need to rerun Express Setup, see the “Resetting the Switch” section.

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Refreshing the PC IP Address
After you complete Express Setup, you should refresh the PC IP address:
•For a dynamically assigned IP address, disconnect the PC from the switch, and reconnect the PC
to the network. The network DHCP server assigns a new IP address to the PC.
•For a statically assigned IP address, change it to the previously configured IP address.
4 Managing the Switch
After you complete Express Setup and install the switch in your network, use the device manager or
other management options described in this section for further configuration.
Using the Device Manager
The simplest way to manage the switch is by using the device manager that is in the switch memory.
This is an easy-to-use web interface that offers quick configuration and monitoring. You can access
the device manager from anywhere in your network through a web browser.
Follow these steps:
1. Launch a web browser on your PC or workstation.
2. Enter the switch IP address in the web browser, and press Enter. The device manager page appears.
3. Use the device manager to perform basic switch configuration and monitoring. Refer to the device
manager online help for more information.
4. For more advanced configuration, download and run the Cisco Network Assistant, which is
described in the next section.
Downloading Cisco Network Assistant
Cisco Network Assistant is a software program that you download from Cisco.com and run on
your PC. It offers advanced options for configuring and monitoring multiple devices, including
switches, switch clusters, switch stacks, routers, and access points. Network Assistant is free—there is
no charge to download, install, or use it.
Follow these steps:
1. Go to this Web address: http://www.cisco.com/go/NetworkAssistant.
You must be a registered Cisco.com user, but you need no other access privileges.
2. Find the Network Assistant installer.

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3. Download the Network Assistant installer, and run it. (You can run it directly from the Web if
your browser offers this choice.)
4. When you run the installer, follow the displayed instructions. In the final panel, click Finish to
complete the Network Assistant installation.
Refer to the Network Assistant online help and the getting started guide for more information.
Command-Line Interface
You can enter Cisco IOS commands and parameters through the CLI. Access the CLI either by
connecting your PC directly to the switch console port or through a Telnet session from a remote PC
or workstation.
Follow these steps:
1. Connect the supplied RJ-45-to DB-9 adapter cable to the standard 9-pin serial port on the PC.
Connect the other end of the cable to the console port on the switch.
2. Start a terminal-emulation program on the PC.
3. Configure the PC terminal emulation software for:
– 9600 baud
– 8 data bits
– no parity
– 1 stop bit
– no flow control
4. Use the CLI to enter commands to configure the switch. See the software configuration guide and
the command reference for more information.
Other Management Options
You can use SNMP management applications such as CiscoWorks Small Network Management
Solution (SNMS) and HP OpenView to configure and manage the switch. You also can manage it
from an SNMP-compatible workstation that is running platforms such as HP OpenView or
SunNet Manager.
The Cisco IE2100 Series Configuration Registrar is a network management device that works with
embedded Cisco Networking Services (CNS) agents in the switch software. You can use IE2100 to
automate initial configurations and configuration updates on the switch.
See the “Accessing Help Online” section on page 23 for a list of supporting documentation.

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5 Planning Switch Stacks
Before connecting the Catalyst 3750 switches in a stack, keep in mind these planning considerations:
•The size of the switch. See the“Technical Specifications” appendix of the Catalyst 3750 Switch
Hardware Installation Guide for the switch dimensions. Stacking together switches of the same
size makes it easier to cable the switches.
•Length of cable. Depending on the configuration of your switch stack, you might need different
sized cables. If you don’t specify the length of the StackWise cable, the 0.5-meter cable is supplied.
If you require the 1-meter cable or 3-meter cable, you can order it from your Cisco supplier. For
cable numbers, see the Catalyst 3750 Switch Hardware Installation Guide.
Note For concepts and procedures to manage switch stacks, refer to the switch software
configuration guide.
Powering Considerations
Consider the following guidelines before you power the switches in a stack:
Note Stack master elections occur over a 10-second timeframe on switches running releases earlier
than Cisco IOS Release 12.2(20)SE3.
For more information on stack master elections, see the “Managing Switch Stacks” chapter
in the switch software configuration guide.
•The sequence in which the switches are
initially powered on might affect the switch
that becomes the stack master.
•If you want a particular switch to become the
stack master, power on that switch first. This
switch becomes the stack master and remains
the stack master until a master re-election is
required. After 20 seconds, power on the
remaining switches in the stack.
•If you have no preference for which switch
becomes the stack master, power on all the
switches in the stack within a 20-second
timeframe. These switches participate in the
stack master election. Switches powered on
after the 20-second timeframe do not
participate in the election.
•Power off a switch before you add it to or
remove it from an existing switch stack.