Cisco Catalyst 3750-X Series User manual

Americas Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Catalyst 3750-X and 3560-X Switch
Getting Started Guide
• About this Guide, page 1
• Box Contents, page 2
• Running Express Setup, page 3
• Managing the Switch, page 8
• Installing the Switch, page 10
• Securing the AC Power Cord (Optional), page 14
• Connecting the StackWise Cables (Catalyst 3750-X Switch), page 14
• Connecting the StackPower Cables (Catalyst 3750-X Switch), page 15
• Installing the Network Module (Optional), page 16
• Connecting the Switch Ports, page 17
• Troubleshooting, page 19
• Obtaining Documentation and Submitting a Service Request, page 20
About this Guide
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 3750-X and 3560-X documentation
on Cisco.com. For system requirements, important notes, limitations, open and resolved bugs, and
documentation updates, see the release notes on Cisco.com.
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 3750-X and 3560-X Switches on Cisco.com.

2
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Box Contents
Box Contents
Note Verify that you have received these items. If any item is missing or damaged, contact your Cisco
representative or reseller for instructions.
1Catalyst WS-C3750X-48P1switch with optional
network module2
1. Catalyst WS-C3750X-48 switch shown. Your switch model might look different.
2. Item is orderable.
8Eight number-8 Phillips flat head screws
2AC power cord 9Cable guide
3Product documentation and compliance document 10 M4.0 x 20mm Phillips pan head screw
4Four rubber mounting feet 11 (Optional) RJ-45 console cable2
5Ground lug screw and ring terminal 12 (Optional) USB console cable2
6Two 19-inch mounting brackets 13 (Optional) StackWise cable (0.5-meter, 1-meter, or 3-meter)2
7Four number-12 pan head screws 14 (Optional) StackPower cable (0.305-meter or 1.5-meter)2
Product
Documentation
and Compliance
Catalyst3750-XPoE+48
SYSTXPSSTATSPEEDDUPLX
EN
PoE
STACK
MAST
S-PWR
MODE
CONSOLE
123456789101112123456789101112123456789101112123456789101112
C3KX-NM-10G
NETWORK
MODULE
G1G2/TE1 G3G4/TE2
6
7
8
4
13
9
10
14
2
12
3
11
5
1
Catalyst3750-XPoE+48
Catalyst3750-XPoE+48
253217

3
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Running Express Setup
Running Express Setup
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 To use the CLI-based initial setup program, see Appendix C, “Configuring the Switch with the
CLI-Based Setup Program,” in the switch hardware guide.
You need this equipment:
• PC with Windows Vista, XP, or 2000
• Browser (Internet Explorer 5.5, 6.0, 7.0, Firefox 1.5, 2.0, 3.0 or later) with JavaScript enabled
• Straight-through or crossover Category 5 Ethernet cable
Note Before running Express Setup, disable any pop-up blockers or proxy settings in your browser and any
wireless client running on your PC.
Step 1 Make sure that nothing is connected to the switch.
Step 2 During Express Setup, the switch acts as a DHCP server. If your PC has a static IP address, temporarily change your
PC settings before you use DHCP.
Note Write down the static IP address. You will need this IP address in Step 13.
Catalyst3750-X PoE+48
SYSTRPSSTATSPEEDDUPLX
EN
PoE
STACK
MAST
S-PWR
MODE
CONSOLE
123456789101112
C3KX-NM-10G
NETWORK
MODULE
G1G2/TE1G3G4/TE2
1234567891011 12131415161718192021222324252627282930313233343536373839404142434445464748
253218

4
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Running Express Setup
Step 3 Power the switch.
AC power switches: Plug the AC power cord into the
switch power supply and into a grounded AC outlet.
DC power switches: See the wiring instructions in the
hardware installation guide on Cisco.com.
Step 4 Approximately 30 seconds after the switch powers on, it begins the power-on self-test (POST), which can take up to
5 minutes to complete.
During POST, the SYSTEM LED blinks green, and the XPS, STATUS, DUPLEX, and SPEED LEDs turn solid
green.
When POST is complete, the SYSTEM LED is green, the MAST LED is green if the switch is acting as stack master,
and the other LEDs turn off.
Note Before going to the next step, wait until POST is complete.
Troubleshooting:
If the SYST LED blinks green, does not turn green, or turns amber, contact your Cisco representative or reseller. The
switch failed the power-on self-test (POST).
Step 5 Press and hold the Mode button until all the LEDs next to
the Mode button turn green. (The XPS LED remains off
on some switch models.)
You might need to hold the button for more than 3
seconds.
The switch is now in Express Setup mode.
Troubleshooting:
If the LEDs next to the Mode button blink when you press
the button, release it. Blinking LEDs mean that the switch
is already configured and cannot go into Express Setup
mode. For more information, see the “Resetting the
Switch to the Default Settings” section on page 20.
RESET
CONSOLE
STACK 1STACK2
S-PWR
RPS
S-PWR
AUX ACOKC3K-PWR-715WAC
PSOK ACOKC3K-PWR-715WAC
PSOK
253219
Catalyst3750-X PoE+48
SYSTRPSSTATSPEEDDUPLX
EN
PoE
STACK
MAST
S-PWR
MODE
CONSOLE
C3KX-NM-10G
NETWORK
MODULE
G1G2/TE1G3G4/TE2
1234567891011 12131415161718192021222324252627282930313233343536373839404142434445464748
MODE
CONSOLE
253220

5
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Running Express Setup
Step 6 Connect a Category 5 Ethernet cable to a port:
• Any 10/100/1000 Ethernet port on the switch front
panel
• The RJ-45 management port on the switch rear panel
Connect the other end of the cable to the Ethernet port on
your PC.
Wait until the port LEDs on the switch and your PC or
laptop are green or blinking green. Green LEDs mean a
successful connection.
Troubleshooting:
If the port LEDs do not turn green after about 30 seconds,
make sure that:
• You connected the Ethernet cable to one of the
downlink switch ports (not to the console port).
• You are using an undamaged Category 5 or 6
Ethernet cable.
• The other device is turned on.
Step 7 Start a browser session on the PC, and enter the IP address 10.0.0.1. When prompted, enter the default password,
cisco.
Note The switch ignores text in the username field.
The Express Setup window appears.
Troubleshooting:
If the Express Setup window does not appear, make sure that any browser pop-up blockers or proxy settings are
disabled and that any wireless client is disabled on your PC or laptop.
Catalyst3750-XPoE+48
SYSTXPS STATSPEED DUPLX
EN
PoE
STACK
MAST
S-PWR
MODE
CONSOLE
12345678910111212345678910 1112123456789101112 123456789101112
C3KX-NM-10G
NETWORK
MODULE
G1G2/TE1G3G4/TE2
253221

6
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Running Express Setup
Step 8 Enter this information in the Network Settings fields:
Note All entries must be in English letters.
• In the Management Interface (VLAN ID) field, the default is 1.
Note We recommend that you use the default VLAN value. During Express Setup, VLAN 1 is the only VLAN on
the switch. 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 switch IP address.
• In the Subnet Mask field, click the drop-down arrow, and select a 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.
Note You must change the default password, cisco.
(Optional) Enter this information in the Ethernet Management Port Settings fields:
• In the IP Address field, enter the IP address of the Ethernet management port. In the IP Subnet Mask field, click
the drop-down arrow, and select an IP Subnet Mask.
Step 9 (Optional) You can enter the Optional Settings information now or enter it later by using the device manager
interface.
You can enter other administrative settings in the Optional Settings fields. For example, the optional administrative
settings identify and synchronize the switch for enhanced management. NTP automatically synchronizes the switch
clock with the network clock. You can manually set the system clock if the switch should have different settings.

7
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Running Express Setup
Step 10 (Optional) You can select 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.
• 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 change it. When you set the SNMP write community, you can both access and
change 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.
• (Optional) In the Enable IPv6 field, click Enable to enable IPv6 on the switch.
Note Enabling IPv6 restarts the switch when you complete Express Setup.
Step 11 Click Submit to save your changes and to complete the initial setup.
After you click Submit:
• The switch is configured and exits Express Setup mode.
• The browser displays a warning message and tries to connect with the earlier switch IP address. Typically,
connectivity between the PC and the switch is lost because the configured switch IP address is in a different
subnet from the IP address on the PC.
For more information about Express Setup fields, see the online help for the Express Setup window.
Step 12 Disconnect the switch from the PC, and install the switch in your network. See the “Installing the Switch” section
on page 10.
Step 13 If you changed the static IP address on your PC in Step 2, change it to the previously configured static IP address.

8
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Managing the Switch
Managing the Switch
After completing Express Setup and installing the switch in your network, you can use these options for
configuration:
• Device Manager
• Cisco Network Assistant
• Command-Line Interface
• Other Management Options
Device Manager
The simplest way to manage the switch is by using the device manager in the switch memory. This is a
web interface that offers quick configuration and monitoring. You can access it through a web browser.
Follow these steps:
1. Launch a web browser on your PC or laptop.
2. Enter the switch IP address in the web browser, and press Enter. The device manager page appears.
3. Use the device manager for basic switch configuration and monitoring. Refer to the device manager
online help for more information.
Step 14 See the “Managing the Switch” section on page 8 for information about configuring and managing the switch.
To display the device manager:
1. Start a web browser on your PC or laptop.
2. Enter the switch IP address, username, and password assigned in Step 8 in the browser, and press Enter.
The device manager page appears.
Troubleshooting:
If the device manager does not appear:
• Confirm that the port LED for the switch port connected to your network is green.
• Confirm that the PC or laptop that you are using has network connectivity by connecting it to a well-known web
server in your network. If there is no network connection, troubleshoot the network settings on the PC or laptop.
• Make sure that the switch IP address in the browser is correct.
• If the switch IP address in the browser is correct, the switch interface LED is green, and the PC or laptop has
network connectivity, continue troubleshooting by reconnecting the PC or laptop to the switch. Configure a
static IP address on the PC or laptop that is in the same subnet as the switch IP address.
• When the LED on the switch port connected to the PC or laptop is green, re-enter the IP address of the switch
in a browser to display the device manager. When the device manager appears, you can continue with the
configuration.

9
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Managing the Switch
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.
1. Go to this Web address: http://www.cisco.com/en/US/products/ps5931/index.html.
Note You must be a registered Cisco.com user, but you need no other access privileges.
2. Find the Network Assistant installer.
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 instructions. In the final panel, click Finish.
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. Use one of these options to it:
• USB Console Port
• Ethernet Console Port
• Management Port
Note You cannot use the Ethernet console port and the USB console port at the same time.
USB Console Port
Note A USB device driver must be installed the first time a Microsoft Windows-based PC is connected to the
switch USB console port. See the switch hardware installation guide for instructions.
1. Connect a USB cable to the PC USB port. Connect the other end of the cable to the mini-B
(5-pin-connector) USB port on the switch front panel.
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, and
no flow control.
4. Use the CLI to configure the switch. See the software configuration guide and the command
reference.

10
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Installing the Switch
Ethernet Console Port
1. Connect a Category 5 Ethernet cable to the PC Ethernet port. Connect the other end of the cable to
the Ethernet console port on the switch rear panel.
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, and
no flow control.
4. Use the CLI to configure the switch. See the software configuration guide and the command
reference.
Management Port
1. Connect a Category 5 Ethernet cable to the PC Ethernet port. Connect the other end of the cable to
the management port on the switch rear panel.
2. Start a Telnet session on the PC.
3. Enter the switch IP address that you assigned using Express Setup.
4. Use the CLI to configure the switch. See the software configuration guide and the command
reference.
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 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 the Registrar to
automate initial configurations and configuration updates.
See the “Accessing Help Online” section on page 20 for supporting documentation.
Installing the Switch
This section covers basic 19-inch rack-mounting. The illustrations show the Catalyst 3750X-48P switch.
You can install and connect other Catalyst 3750-X and 3560-X switches as shown. See the hardware
installation guide on Cisco.com.
Equipment That You Need
• Phillips screwdriver to rack-mount the switch
• Ratcheting torque screwdriver capable of 5-inch pound of torque to connect the StackWise cable

11
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Installing the Switch
Before You Begin
Before installing the switch, verify that these guidelines are met:
• Clearance to front so that the LEDs can be read.
• AC power cord reaches from the AC power outlet to the rear-panel connector.
• Switch is rack-mounted before you install a 1100-W power supply module.
• Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent
lighting. Make sure the cabling is safely away from other devices that might damage the cables.
If needed, allow one RU space between devices to provide room for cabling.
• Airflow around the switch and through the vents is unrestricted.
• Temperature around the unit does not exceed 113°F (45°C). If the switch is in a closed or multirack
assembly, the temperature might be higher than normal room temperature.
• Humidity around the switch does not exceed 85 percent.
• Altitude at the installation site is below 10,000 feet.
• For 10/100/1000 fixed ports, cables from the switch to connected devices are not longer than
328 feet (100 meters).
• Cooling mechanisms, such as fans and blowers in the switch, can draw dust and other particles
causing contaminant buildup inside the chassis, which can result in system malfunction. Install the
switch in an environment as free as possible from dust and foreign conductive material (such as
metal flakes from construction activities).
Installation Warning Statements
Translations of these warning statements appear in the Regulatory Compliance and Safety Information
for the Catalyst 3750-X and 3560-X Switch document on Cisco.com.
Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum
recommended ambient temperature of 113°F (45°C). To prevent airflow restriction, allow at least 3
inches (7.6 cm) of clearance around the ventilation openings. Statement 17B
Warning Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard. Statement 206
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030

12
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Installing the Switch
Caution To comply with the Telcordia GR-1089 Network Equipment Building Systems (NEBS) standard for
electromagnetic compatibility and safety, connect the Ethernet cables only to intrabuilding or
nonexposed wiring or cabling.
Note The grounding architecture of this product is DC-isolated (DC-I).
Attaching the Brackets
Use three (for front-mount) or four (for mid- or rear-mount) number-8 Phillips flat-head screws to attach
the long side of each bracket to the switch in one of these mounting positions.
1Front-mounting position 3Mid-mounting position
2Number-8 Phillips flat-head screws 4Rear-mounting position
5WAC AC OK C3KX-PWR-715WAC
PS OK
Catalyst 3750-X PoE+48
8910 11 12
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2
Catalyst 3750-X PoE+48
8910 11 12
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2
207656
1
2
3
4
2
22
2

13
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Installing the Switch
Rack-Mount the Switch
Use the four number-12 Phillips machine screws to attach the brackets to the rack. Use the black Phillips
machine screw to attach the cable guide to the left or right bracket.
Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
precautions to ensure that the system remains stable. The following guidelines are provided to ensure
your safety:
This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the
heaviest component at the bottom of the rack.
If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the
unit in the rack. Statement 1006
1Black Phillips machine screw 4Number-12 Phillips machine screws
2Cable guide 5Mid-mounting position
3Front-mounting position 6Rear-mounting position
Catalyst 3750-X PoE+48
SYST XPS STAT SPEED DUPLX
EN
PoE
STACK
MAST
S-PWR
MODE
CONSOLE
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2
Catalyst 3750-X PoE+48
SYST XPS STAT SPEED DUPLX
EN
PoE
STACK
MAST
S-PWR
MODE
CONSOLE
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2
RESET
CONSOLE
STACK 1 STACK 2
S-PWR
XPS
S-PWR
AUX AC OK C3KX-PWR-715WAC
PS OK AC OK C3KX-PWR-715WAC
PS OK
207513
12345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
12345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
3
2
1
6
5
4
4
4

14
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Securing the AC Power Cord (Optional)
Securing the AC Power Cord (Optional)
253160
AC OK C3KX-PWR-715WAC
PS OK
AC OKC3KX-PWR-715WAC
PS OK
Make a loop in the power cord and thread it through the power cord retainer. Connect the power cord to
the power supply.
Connecting the StackWise Cables (Catalyst 3750-X Switch)
Always use a Cisco-approved StackWise cable to connect the switches.
Connect the cable to the StackWise port on the switch rear panel. Use the window in the StackWise cable
to align the connector. Use a ratcheting torque screwdriver to tighten the retainer screws to 5-inch pound
of torque. Connect the other end of the cable to the port of the other switch, and tighten the retainer
screws to 5-inch pound of torque. Avoid overtightening the screws.
Caution Removing and installing the StackWise cable can shorten its life. Do not remove and insert the cable
more often than is necessary.
StackWise Cabling Configurations
This illustration shows the recommended stack configuration with connections using 0.5-meter
StackWise cables.
For more configuration examples, see the hardware installation guide on Cisco.com.
RESET
CONSOLE
STACK 1 STACK 2
AUX

15
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Connecting the StackPower Cables (Catalyst 3750-X Switch)
Connecting the StackPower Cables (Catalyst 3750-X Switch)
Always use a Cisco-approved StackPower cable to connect the switches.
Note The Catalyst 3750-X S-PWR ports accept either the yellow or the green end of the StackPower cable.
Align the connector and connect the StackPower cable to the S-PWR port on the switch rear panel and
finger-tighten the screw. Connect the other end of the cable to the port on the other switch and
finger-tighten the screw. Avoid overtightening the screws.
Caution Removing and installing the StackPower cable can shorten its life. Do not remove and insert the cable
more often than is necessary.
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
253200
STACK 1 STACK 2
STACK 1 STACK 2
STACK 1 STACK 2
AC OK
AC OK C3KX-PWR-715WAC
PS OK
S-PWR
XPS
S-PWR
253213

16
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Installing the Network Module (Optional)
StackPower Cabling Configurations
You can configure a StackPower stack of up to four switches for either power-sharing or redundancy.
This illustration shows the recommended stack configuration with connections using 0.305-meter
StackPower cables.
For more examples, see the hardware installation guide on Cisco.com.
Installing the Network Module (Optional)
The switch accepts a hot-swappable network expansion module that provides SFP (1 Gigabit) and SFP+
(10 Gigabit) uplink ports.
Note You need a number-2 Phillips screwdriver to install the network module.
CONSOLE
RESET
AUX
STACK 1STACK 2
S-PWR
XPS
S-PWR
ACOK C3K-PWR-715WAC
PS OK
ACOK C3K-PWR-715WAC
PS OK
CONSOLE
RESET
AUX
STACK 1 STACK2
S-PWR
XPS
S-PWR
ACOK C3K-PWR-715WAC
PS OK
ACOK C3K-PWR-715WAC
PS OK
CONSOLE
RESET
AUX
STACK 1 STACK 2
S-PWR
XPS
S-PWR
ACOK C3K-PWR-715WAC
PS OK
ACOK C3K-PWR-715WAC
PS OK
CONSOLE
RESET
AUX
STACK 1STACK 2
S-PWR
XPS
S-PWR
ACOK C3KX-PWR-715WAC
PS OK
ACOK C3KX-PWR-715WAC
PS OK
253395
S-PWR
XPS
AC OK PS OK
S-PWR
XPS
S-PWR
AC OK PS OK

17
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Connecting the Switch Ports
Connecting the Switch Ports
10/100/1000 Ports
When you connect to servers, workstations, IP phones, wireless access points, and routers, use a
straight-through, twisted four-pair, Category 5 cable in a 10/100/1000 port. Use a crossover, twisted
four-pair, Category 5 cable when you connect to other switches, hubs, or repeaters. Connect the other
cable end to an RJ-45 port on the other device.
Depending upon the installed power supply, the 10/100/1000 ports support Power over Ethernet (PoE)
and PoE+.
PoE inline power supports devices compliant with IEEE 802.3af, as well as prestandard Cisco IP Phones
and Cisco Aironet Access Points. Each port can deliver up to 15.4 W of power.
PoE+ inline power supports devices compliant with IEEE 802.3at, delivering up to 30 W to all switch
ports.
See the hardware installation guide on Cisco.com.
Note The automatic medium-dependent interface crossover (auto-MDIX) feature is enabled by default. The
switch detects the required cable type for copper Ethernet connections and configures the interfaces. You
can use either a crossover or a straight-through cable for connections to a copper 10/100/1000 module
port on the switch, regardless of the type of connected device.
Step 1 Loosen the captive screws, and remove the blank
network module cover.
Step 2 Slide the network module into the opening until the
back of the module faceplate is flush with the switch
faceplate. Tighten the captive screws.
1234567891011 12 1234567891011 12
C3KX-NM-10G
NETWORK
MODULE
BLANK
MODULE
277333
12345678910 11 12
37 38 39 45678910 11 12
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2

18
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Connecting the Switch Ports
SFP-Module Ports
Use only Cisco SFP modules with the switch. For a list of supported modules, see the release notes on
Cisco.com. For detailed instructions on installing, removing, and connecting to SFP modules, see the
SFP module documentation.
Verify Port Connectivity
After you connect a device to the switch port, the port LED turns amber for about 30 seconds while the
switch establishes a link. The LED turns green when the switch and the attached device have a link. If the
LED is off, the device might not be turned on, there might be a cable problem, or there might be a
problem with the adapter installed in the device.
Step 1 Hold the SFP module on the sides, and insert it into
the switch slot until you feel the connector snap into
place.
Step 2 Connect an appropriate cable to the module port.
Step 3 Connect the other cable end to the other device.
Catalyst 3750-X PoE+48
37 38 39 40 41 42 43 44 910 11 12
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2
Catalyst 3750-X PoE+48
37 38 39 40 41 42 78910 11 12
C3KX-NM-10G
NETWORK
MODULE
G1 G2/TE1 G3 G4/TE2

19
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Troubleshooting
Troubleshooting
Express Setup
If Express Setup does not run, or if the Express Setup page does not appear in your browser:
• Did you verify that POST ran successfully
before starting Express Setup?
If not, make sure that only the SYST and STAT
LEDs are green before you press the Mode button
to enter the Express Setup mode.
POST errors are usually fatal. Contact your Cisco
technical support representative if your switch
fails POST.
• Did you press the Mode button while the
switch was still running POST?
If yes, wait until POST completes. Power cycle the
switch. Wait until POST completes. Confirm that
the SYST and STAT LEDs are green. Press the
Mode button to enter Express Setup mode.
• Did you try to continue without confirming
that the switch was in Express Setup mode?
Verify that all LEDs next to the Mode button are
green. (The XPS LED stays off.) If not, press and
hold the Mode button to enter Express Setup mode.
• Does your PC have a static IP address? If yes, change your PC settings to temporarily use
DHCP before connecting it to the switch.
• Did you connect the Ethernet cable to the
console port instead of a 10/100/1000
Ethernet port or the management port on the
switch?
If yes, disconnect the cable from the console port.
Connect the cable to an Ethernet port on the
switch. Wait 30 seconds before you enter 10.0.0.1
in the browser.
• Did you wait 30 seconds after you connected
the switch and the PC before you entered the
IP address in your browser?
If not, wait 30 seconds, re-enter 10.0.0.1 in the
browser, and press Enter.
• Did you enter the wrong address in the
browser, or is there an error message?
If yes, re-enter 10.0.0.1 in the browser, and press
Enter.

20
Catalyst 3750-X and 3560-X Switch Getting Started Guide
OL-19590-01
Obtaining Documentation and Submitting a Service Request
Resetting the Switch to the Default Settings
Caution Resetting the switch deletes the configuration and restarts the switch.
1. Press and hold the Mode button. The switch LEDs begin blinking after about 3 seconds.
2. Continue holding down the Mode button. The LEDs stop blinking after 7 more seconds, and then
the switch restarts.
The switch now behaves like an unconfigured switch. You can enter the switch IP information by using
Express Setup as described in the “Running Express Setup” section on page 3.
Accessing Help Online
First look for a solution to your problem in the troubleshooting section of the hardware installation guide
or the software configuration guide on Cisco.com. You can also access the Cisco Technical Support and
Documentation website for a list of known hardware problems and extensive troubleshooting
documentation.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and
revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS Version 2.0.