Cisco Catalyst 3750-E Series User manual

GETTING STARTED GUIDE
Catalyst 3750-E Switch Getting Started Guide
1About this Guide
2Taking Out What You Need
3Running Express Setup
4Managing the Switch
5Planning Switch Stacks
6Rack-Mounting
7Connect to the Switch Ports
8In Case of Difficulty
9Obtaining Documentation and Submitting a Service Request
10 Cisco Warranty Terms

2
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, and troubleshooting help.
For additional installation and configuration information for Catalyst 3750-E switches, see the
Catalyst 3750-E 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-E and Catalyst 3560-E 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.
4. For switches with the optional 1150-W power supply module (model C3K-PWR-1150WAC),
install the power supply in the switch as described in the installation notes after you rack-mount
the switch.

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Shipping Box Contents
1
Catalyst 3750E-48 Power over Ethernet
(PoE) switch 8Four rubber mounting feet
2Documentation 9Power cord retainer
3AC power cord 10 Four number-12 Phillips machine screws
4Console cable (optional) 11 Twelve number-8 Phillips flat-head screws
5
StackWise cable, 0.5-meter, 1-meter or
3-meter1
1. (0.5-meter supplied when not specified)
12 One black Phillips machine screw
6Two 19-inch mounting brackets 13 Ground lug screw and ring terminal
7Cable guide
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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.
Doing 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.
You need this equipment to set up the switch:
•A PC with Windows 2000 or XP installed.
•A web browser (Internet Explorer 5.5, 6.0, Netscape 7.1 or later) with JavaScript enabled.
•A straight-through or crossover Category 5 Ethernet cable to connect your PC to the switch.
Disable any pop-up blockers or proxy settings in your browser software and any wireless client
running on your PC.
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.
For AC-powered switches, connect the AC
power cord to the switch power supply and
to a grounded AC outlet.
For DC-powered switches, see the wiring
instructions in the hardware installation
guide on Cisco.com.
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. See the “In Case of Difficulty” section on
page 22 if your switch fails POST.
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Step 5 Press and hold the Mode button for
3 seconds. When all of the LEDs above the
Mode button turn green, release the Mode
button.
Step 6 If the LEDs above the Mode button blink after 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” section on page 23.
Step 7 Verify that the switch is in Express Setup mode. Make sure that all LEDs above the Mode
button are green. (On some switch models, the RPS LED remains off.)
Step 8 Connect a Category 5 Ethernet cable to any
10/100/1000 Ethernet port on the switch
front panel or to the Ethernet management
port on the rear panel. Connect the other end
of the cable to the Ethernet port on your PC.
Step 9 Verify that the LEDs on both Ethernet ports are green.
Wait 30 seconds.
Step 10 Launch a web browser on your PC. Enter the
IP address 10.0.0.1 in the web browser, and
press Enter.
Step 11 The switch prompts you for the default switch password. Enter the default password, cisco.
Note The switch ignores text in the username field.
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Step 12 The Express Setup Basic Settings page appears. If it does not appear, see the “In Case of
Difficulty” section on page 22.
Step 13 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 4094.
•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.
Note You must change the password from the default password, cisco.
Step 14 (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.

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Step 15 (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 16 (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.

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Step 17 (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 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.
Step 18 (Optional) You can enable IPv6 on the switch in the Advanced Settings screen. 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 19 To complete Express Setup, click Submit in the Network Settings or the Advanced Settings
screen to save your settings. 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 then 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. If you enabled IPv6, the switch restarts.
Step 20 Disconnect the switch from the PC, and install the switch in your production network. See
the “Managing the Switch” section on page 9 for information about configuring and
managing the switch.
If you need to rerun Express Setup, see the “Resetting the Switch” section on page 23.

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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 a 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 by connecting
your PC directly to the switch console port or to the Ethernet management port.
Using the switch console port:
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,
and 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.
Using the switch Ethernet management port:
Follow these steps:
1. Connect a Category 5 Ethernet cable to the PC Ethernet port. Connect the other end of the cable
to the Ethernet management port on the switch rear panel.
2. Start a Telnet session on the PC.
3. Enter the switch IP address that you assigned by using Express Setup.
4. Use the CLI to enter commands to configure the switch. See the software configuration guide and
the command reference for more information.

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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.
5 Planning Switch Stacks
Before connecting the switches in a stack, keep in mind these stacking guidelines:
•Size of the switch and any optional power supply module. The 1150-W power supply module is
longer than the other modules. Stacking switches with the same power supply modules together
makes it easier to cable the switches.
•Length of cable. Depending on the configurations that you have, you might need different sized
cables. If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If
you need the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier.
•Access to the switch rear panel and to the rear of the rack if you are planning to stack the switches.
If you do not have access to the rear panel, make sure that you cable the switches before you
rack-mount them.
•For switch stacks that are rack-mounted, review this recommended sequence of events:
– If you are using the RPS 2300, install the RPS first at the bottom of the stack. If needed, allow
one RU space between the RPS and the first switch above to provide room for cabling.
– Connect all the 22-pin RPS cables to the RPS 2300 as needed.
– Rack-mount the switches. If you have the optional 1150-W power supply module, first
rack-mount the switch before installing the power supply module.
– Connect the RPS cable to the first switch above the RPS 2300. Connect the stack cables to the
first switch above the RPS.
– Connect the RPS cable to the next switch above the RPS 2300. Connect the stack cables to the
next switch above the RPS.
– Repeat until all devices are connected.

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For switch dimensions, StackWise cable part numbers, and additional stacking guidelines, see the
switch hardware installation guide on Cisco.com. For concepts and procedures to manage switch
stacks, see the switch software configuration guide and the stack compatibility guide also on
Cisco.com.
Stack Cabling Configurations
These illustrations show the recommended switch stack configurations with redundant StackWise
cabling connections for optimized stack bandwidth. For more configuration examples, see the
hardware installation guide on Cisco.com.
Vertical Stacking
In this example, the stack uses the 0.5-meter StackWise cable to make redundant connections.
In this example, the stacks use both the 0.5- and the 3-meter StackWise cables to make redundant
connections.
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Side-By-Side Stacking
In this example, eight switches are stacked side-by-side with redundant connections by using 0.5- and
3-meter StackWise cables.
In this example, nine switches are stacked side-by-side with redundant connections by using 0.5- and
3-meter StackWise cables.
Power On Sequence for Switch Stacks
Consider these guidelines before you power on the switches in a stack:
•The sequence in which the switches are first 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.
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•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.
For more information on stack master elections, see the “Managing Switch Stacks” chapter in the
switch software configuration guide.
6 Rack-Mounting
This section covers basic 19-inch rack-mounting and switch port connections. As an example, all the
illustrations show the Catalyst 3750E-48 PoE switch. You can install and connect other
Catalyst 3750-E switches as shown in these illustrations. For additional installation and cabling
information, see the hardware installation guide on Cisco.com.
Equipment That You Supply
You need a Phillips screwdriver to rack-mount the switch. For connecting the StackWise cables, you
need a ratcheting torque screwdriver capable of 5 lbf-in. (80 ozf-in.).
Before You Begin
Before installing the switch, verify that these guidelines are met:
•Clearance to front and rear panels is such that
– Front-panel indicators can be easily read.
– Access to ports is sufficient for unrestricted cabling.
•Make sure that there is access to the rear of the rack if you are planning to stack the switches or
connect the RPS 2300. If you do not have access to the rear panel, make that sure you cable the
switches before you rack-mount them.
•If you have the optional 1150-W power supply module, first rack-mount the switch before
installing the power supply module.
•AC power cord can reach from the AC power outlet to the connector on the switch rear panel.
•Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent
lighting fixtures. Make sure the cabling is safely away from other devices that might damage the
cables.
•Airflow around the switch and through the vents is unrestricted.

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•Temperature around the unit does not exceed 113°F (45°C). If the switch is installed in a closed
or multirack assembly, the temperature around it might be greater than normal room temperature.
•For copper connections on Ethernet ports, cable lengths from the switch to connected devices can
be up to 328 feet (100 meters).
•For cable lengths for X2 transceiver modules and SFP-module connections, see the hardware
installation guide on Cisco.com and the documentation that shipped with the module.
Installation Warning Statements
This section includes the basic installation warning statements. Translations of these warning
statements appear in the Regulatory Compliance and Safety Information for the Catalyst 3750-E and
Catalyst 3560-E Switch guide.
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
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

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Warning Only trained and qualified personnel should be allowed to install, replace, or service this
equipment. Statement 1030
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)
Before Attaching the Brackets
To install the switch in a rack, you must first remove the screws from the switch chassis so that the
mounting brackets can be attached. For attachment at the front-mounting position, remove two
Phillips truss-head screws from the switch side panels. For attachment at the mid-mounting position,
remove one screw. For attachment at the rear-mounting position, remove two screws.
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Attaching the Brackets
Use four number-8 Phillips flat-head screws to attach the long side of each bracket to the switch in one
of three mounting positions.
1Front-mounting position 3Mid-mounting position
2Number-8 Phillips flat-head screws 4Rear-mounting position
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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.
1Black Phillips machine screw 4Number-12 Phillips machine screws
2Cable guide 5Mid-mounting position
3Front-mounting position 6Rear-mounting position
ACOKPSOK
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Connect the StackWise Cables
Use the window in the StackWise cable to align the connector correctly. Insert the cable into the
StackWise port on the back of the switch. Using a ratcheting torque screwdriver, tighten the retainer
screws to 5 lbf-in. (80 ozf-in.). Insert the other end of the cable into the connector of the other switch,
and tighten the retainer screws to 5 lbf-in. (80 ozf-in.). Avoid overtightening the screws. Always use a
Cisco-approved StackWise cable to connect the switches.
Caution Removing and installing the StackWise cable can shorten its useful life. Do not remove
and insert the cable more often than is absolutely necessary.
STACK 1 STACK 2
CONSOLE
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7 Connect to the Switch Ports
This section describes how to connect to the fixed switch ports and to the 10-Gigabit Ethernet module
slots.
Connect to 10/100/1000 Ports
The 10/100/1000 Ethernet ports use standard RJ-45 connectors with Ethernet pinouts. The maximum
cable length is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category 5,
Category 5e, or Category 6 UTP cable. The 10BASE-T traffic can use Category 3 or Category 4 cable.
The autonegotiation feature is enabled by default on the switch. At this setting, the switch ports
configure themselves to operate at the speed of attached devices. If the attached device does not
support autonegotiation, you can explicitly set the switch port speed and the duplex parameters. To
maximize performance, either let the ports autonegotiate both speed and duplex, or set the port speed
and duplex parameters on both ends of the connection.
For simplified cabling, the automatic medium-dependent interface crossover (auto-MDIX) feature is
enabled by default on the switch. With auto-MDIX enabled, the switch detects the required cable type
for copper Ethernet connections and configures the interface accordingly. Therefore, you can use either
a crossover or a straight-through cable for connections to a switch 10/100/1000 Ethernet port,
regardless of the type of device on the other end of the connection.
See the switch software configuration guide or the switch command reference on Cisco.com for more
information about enabling or disabling autonegotiation and auto-MDIX.
Connect to 10/100/1000 PoE Ports
The 10/100/1000 PoE ports have the same default settings and cabling requirements that are described
in the previous section.
The PoE ports provide PoE support for devices compliant with IEEE 802.3af and also provide Cisco
pre-standard PoE support for Cisco IP Phones and Cisco Aironet Access Points.
Each port can deliver up to 15.4 W of PoE. With the 1150-W power supply module, the
Catalyst 3750E-48PS switch can deliver 15.4 W on all 48 ports. With the 750-W power supply
module, the switches can deliver 15.4 W of PoE on any 24 of the 48 ports, or any combination of the
ports can deliver an average of 7.7 W of PoE at the same time, up to a maximum switch power output
of 370 W. On a per-port basis, you can control whether or not a PoE port automatically provides
power when an IP phone or an access point is connected.
See the hardware installation guide on Cisco.com for more information about the switch power supply
options.