Cisco SG250-26P-K9-EU Quick Start Guide

Quick Start Guide

Cisco 250 Series Smart Switches

Welcome

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Thank you for choosing the Cisco 250 Series Smart Switch. These
switches are designed to be operational right out-of-the-box as a standard
switch. In the default configuration, it forwards packets between the
connecting devices after powered up.

Package Contents

• Cisco 250 Series Smart Switch

• Rackmount Kit

• Power Cord or Adapter

• This Quick Start Guide

• Pointer Card with China RoHS

• Technical Support Contacts

• EU Directives 1999/5/EC Compliance Information (for EU SKU only)

This guide familiarizes you with the smart switch layout and describes how
to deploy the switch in your network. For additional information, see

www.cisco.com/go/250switches

Before You Begin

Before you begin the installation, make sure that you have the following:

• RJ-45 Ethernet cables (Category 5e or higher) for connecting network
devices.

• Tools for installing the hardware. The rack-mount kit packed with the
switch contains four rubber feet for desktop placement, and two
brackets and twelve screws for rack-mounting. If the supplied screws
are lost, use replacement screws in the following size:

– Diameter of the screw head: 6.9 mm

– Length of face of screw head to base of screw: 5.9 mm

– Shaft diameter: 3.94 mm

• The wall mount kit includes screws and anchors. If the supplied screws
are lost, use replacement screws in the following size:

– Diameter of the screw head: 6.8 mm

– Length of face of screw head to base of screw: 16 mm

– Shaft diameter: 3.5 x 1.3 mm

2 Cisco 250 Series Smart Switches

• Computer with Internet Explorer (version 9.0, 10.0, 11.0), or Firefox

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(version 36.0, 37.0, or higher), or Chrome (version 40,41,42 or higher) for
using the web-based interface.

Mounting the Cisco 250 Series Smart Switches

There are three ways to install the switch:

• Place the switch on a flat surface. To place the switch on a desktop,
install the four rubber feet (included) on the bottom of the switch.

• Mount the switch in a standard rack (1 rack unit high).

• Mount on a wall.

Placement Tips

Do not mount the device in a location where any of the following conditions
exist:

• High Ambient Temperature—To prevent the switch from overheating,
do not operate it in an area that exceeds an ambient temperature of
122°F (50°C).

•Air Flow—Both side panels must be unobstructed to prevent
overheating.

•Overloading—The device must be level, stable, and secure to prevent
it from sliding or shifting out-of-position.

• Circuit Overloading—Adding the device to the power outlet must not
overload that circuit.

Rack Mounting

You can mount the switches in any standard size, 19-inch (about 48 cm)
wide rack. The switch requires 1 rack unit (RU) of space, which is 1.75
inches (44.45 mm) high.

CAUTION For stability, load the rack from the bottom to the top, with the

heaviest devices on the bottom. A top-heavy rack is likely to
be unstable and might tip over.

Cisco 250 Series Smart Switches 3

To install the switch into a 19-inch standard chassis:

400925

STEP 1 Place one of the supplied brackets on the side of the switch so that

the four holes of the brackets align to the screw holes, and then use
the four supplied screws to secure it.

STEP 2 Repeat the previous step to attach the other bracket to the opposite

side of the switch.

STEP 3 After the brackets are securely attached, the switch is now ready to

be installed into a standard 19-inch rack.

Wall Mounting

To mount the Cisco 250 Series Smart Switches to a wall:

STEP 1 Determine where you want to mount the device. Verify that the

surface is smooth, flat, dry, and sturdy.

STEP 2 Drill two pilot holes into the surface of the wall 94 mm apart.

STEP 3 Insert a screw into each hole, leaving a gap between the surface

and the base of the screw head.

STEP 4 Place the bottom of the switch over the screws and slide the

switch down until the screws fit snugly into the slots.

WARNING Insecure mounting may damage the device or cause injury.

Cisco is not responsible for damages incurred by insecure wall
or ceiling mounting.

4 Cisco 250 Series Smart Switches

Connecting Network Devices

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To connect the smart switch to the network:

STEP 1 Connect the Ethernet cable to the Ethernet port of a computer,

printer, network storage, or other network device.

STEP 2 Connect the other end of the Ethernet cable to one of the

numbered smart switch Ethernet ports.

The LED of the port lights if the device connected is active. Refer to

Features of the Cisco 250 Series Smart Switches for details

about the different ports and LEDs on each switch.

STEP 3 Repeat Step 1 and Step 2 for each device you want to connect to

the smart switch.

NOTE Cisco strongly recommends using Cat5 or better cable for Gigabit

connectivity. When you connect your network devices, do not exceed
the maximum cabling distance of 100 meters (328 feet). It can take up to
one minute for the attached devices or the LAN to be operational after it
is connected. This is normal behavior.

Power over Ethernet Considerations

WARNING The switch is to be connected only to PoE networks without

routing to the outside plant.

If your switch is one of the Power over Ethernet (PoE) models, consider the
following power requirement:

250 Series Switches with Power Over Ethernet

Model Power

Dedicated to
PoE

SF250-48HP 195 Watts 1—48 802.3af/at

SG250-10P 62 Watts 1—8 802.3af/at

SG250-26HP 100 Watts 1—24 802.3af/at

SG250-26P 195 Watts 1—24 802.3af/at

Cisco 250 Series Smart Switches 5

Number of Ports
Supporting PoE

PoE Standard
Supported