Linksys MGBLH1 - Gigabit LH Mini-GBIC SFP... User manual

USER GUIDE
BUSINESS SERIES
48-Port 10/100 + 4-Port
Gigabit Switch with
WebView and Power
over Ethernet
Model: SRW248G4P

i
Table of Contents
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
About This Guide 1
Icon Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Online Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Copyright and Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter 1: Introduction 2
Chapter 2: Product Overview 3
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Side Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 3: Connecting the Switch 5
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pre-Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Fast Ethernet Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Full-Duplex Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1000BASE-T Cable Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Positioning the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Placement Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Desktop Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Rack-Mount Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Uplinking the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 4: Conguration Using the Console Interface 7
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Configuring the HyperTerminal Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Configuring the Switch through the Console Interface. . . . . . . . . . . . . . . . . . . . . . 8
Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Switch Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
System Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Port Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
PoE Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Chapter 5: Conguring the Switch 14
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Setup > Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Setup > Network Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Setup > Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Port Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Port Management > Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Port Management > Link Aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

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Table of Contents
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
Port Management > LACP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Port Management > PoE Power Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
VLAN Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
VLAN Management > Create VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
VLAN Management > Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
VLAN Management > Ports to VLAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
VLAN Management > VLAN to Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Statistics > RMON Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Statistics > RMON History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Statistics > RMON Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Statistics > RMON Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Statistics > Port Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Statistics > 802.1x Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
ACL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
ACL > IP based ACL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
ACL > MAC based ACL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Security > ACL Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Security > Authentication Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Security > 802.1x Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Security > Ports Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Security > HTTPS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Security > Management ACL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Security > SSH Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Security > SSH Host-Key Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
QoS > CoS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
QoS > Queue Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
QoS > DSCP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
QoS > DiffServ Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
QoS > DiffServ Port Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
QoS > Bandwidth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Spanning Tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Spanning Tree > STP Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Spanning Tree > Global STP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Spanning Tree > STP Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Spanning Tree > RSTP Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Spanning Tree > MSTP Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Spanning Tree > MSTP Instance Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Spanning Tree > MSTP Interface Settings . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Multicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Multicast > Global Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

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48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
Multicast > Static Member Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Multicast > Static Router Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Multicast > Member Ports Query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Multicast > Router Ports Query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
SNMP > Global Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
SNMP > Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
SNMP > Group Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
SNMP > Group Membership. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
SNMP > Communities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
SNMP > Notification Recipient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Admin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Admin > User Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Admin > Forwarding Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Admin > Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Admin > Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Admin > Cable Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Admin > Ping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Admin > Save Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Admin > Jumbo Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Admin > Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Admin > HTTP Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Admin > Reboot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Admin > Factory Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Appendix A: About Gigabit Ethernet and Fiber Optic Cabling 55
Gigabit Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Appendix B: Glossary 56
Appendix C: Specications 60
Appendix D: Warranty and Regulatory Information 62
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Industry Canada (Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
IC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Règlement d’Industry Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
EC Declaration of Conformity (Europe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Appendix E: Contact Information 68

1
About This Guide
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
About This Guide
Icon Descriptions
While reading through the User Guide you may encounter
various icons designed to call attention to a specific item.
Below is a description of these icons:
NOTE: This checkmark indicates that there is
a note of interest and is something that you
should pay special attention to while using the
product.
WARNING: This exclamation point indicates
that there is a caution or warning and it is
something that could damage your property or
product.
WEB: This globe icon indicates a noteworthy
website address or e-mail address.
Online Resources
Most web browsers allow you to enter the web address
without adding the http:// in front of the address. This
User Guide will refer to websites without including http://
in front of the address. Some older web browsers may
require you to add it.
Resource Website
Linksys www.linksys.com
Linksys International www.linksys.com/international
Glossary www.linksys.com/glossary
Network Security www.linksys.com/security
Copyright and Trademarks
Specifications are subject to change without notice.
Linksys is a registered trademark or trademark of Cisco
Systems, Inc. and/or its affiliates in the U.S. and certain
other countries. Copyright © 2006 Cisco Systems, Inc. All
rights reserved. Other brands and product names are
trademarks or registered trademarks of their respective
holders.

2
Introduction
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
Chapter 1
Chapter 1:
Introduction
Thank you for choosing the 48-Port 10/100 + 4-Port
Gigabit Switch with WebView and Power over Ethernet.
This Switch will allow you to network better than ever.
The 48-Port 10/100 + 4-Port Gigabit Switch with WebView
delivers non-blocking, wire speed switching for your 10
and 100 megabit network clients, plus multiple options
for connecting to your network backbone. Forty-eight
10/100 ports wire up your workstations, while the four
integrated 10/100/1000 ports connect to other switches
and the backbone at Gigabit speeds. The miniGBIC ports
allow future expansion through alternate transmission
media like optical fiber.
All of the 10/100 ports on the Switch support pre-standard
and IEEE 802.3af standard (802.3af) Power over Ethernet
(PoE) capabilities. Each port can detect connected pre-
standard and 802.3af-compliant network devices, such
as IP phones or wireless access points, and automatically
supply the required DC power.
The Switch can provide DC power to a wide range of
connected devices, eliminating the need for an additional
power source and cutting down on the amount of cables
attached to each device. Once configured to supply
power, an automatic detection process is initialized by the
Switch that is authenticated by a PoE signature from the
connected device. Detection and authentication prevent
damage to non-PoE devices.
TheSwitchfeaturesWebViewmonitoringandconfiguration
via your web browser, making it easy to manage the 256
VLANs and up to 8 trunking groups. Or if you prefer, you
can use the integrated console port to configure the
Switch. The non-blocking, wire-speed switching forwards
packets as fast as your network can deliver them.
All ports have automatic MDI/MDI-X crossover detection.
Each port independently and automatically negotiates the
best speed and whether to run in half- or full-duplex mode.
Head-of-line blocking prevention keeps your high-speed
clients from bogging down in lower-speed traffic and fast
store-and-forward switching prevents damaged packets
from being passed on into the network.
Use the instructions in this User Guide to help you connect
the Switch, set it up, and configure it to bridge your
different networks. These instructions should be all you
need to get the most out of the 48-Port 10/100 + 4-Port
Gigabit Switch with WebView and Power over Ethernet.

3
Product Overview
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
Chapter 2
Chapter 2:
Product Overview
Front Panel
The LEDs and ports are located on the front panel of the
Switch.
Front Panel
POWER (Green/Amber) Lights up green to
indicate that power is being supplied to the
Switch. Lights amber to indicate that the Switch’s
power-on-self-test (POST) is in progress. Blinks
amber to indicate that the POST has failed.
LINK/ACT (1-48) (Green/Amber) Lights up
green to indicate a functional 10/100Mbps
network link through the corresponding port
with an attached device that does not use Power
over Ethernet (PoE). Lights up amber to indicate a
functional 10/100Mbps network link through the
corresponding port with an attached PoE device.
Blinks green to indicate that the Switch is actively
sending or receiving data over that port.
LINK/ACT (G1-G4) (Green/Amber) Lights up
green to indicate a functional 10/100Mbps
network link through the corresponding port
with an attached device. Blinks green to indicate
that the Switch is actively sending or receiving
data over that port. Lights amber to indicate a
functional 1000Mbps network link. Blinks green
to indicate that the Switch is actively sending
or receiving data over that port. No amber light
indicated that the link is at 10/100Mbps or there
is no link.
ETHERNET 1-48 These RJ-45 ports support
network speeds of either 10Mbps or 100Mbps,
and can operate in half and full-duplex modes.
Auto-sensing technology enables each port to
automatically detect the speed of the device
connected to it (10Mbps or 100Mbps), and adjust
its speed and duplex accordingly.
The Switch’s 10/100 RJ-45 ports also support the
IEEE 802.3af Power-over-Ethernet (PoE) standard
that enables DC power to be supplied to attached
devicesusingwiresintheconnectingtwisted-pair
cable. Any 802.3af-compliant device attached to
a port can directly draw power from the Switch
over the twisted-pair cable without requiring its
own separate power source. This capability gives
networkadministratorscentralizedpowercontrol
for devices such as IP phones and wireless access
points, which translates into greater network
availability.
For each attached 802.3af-compliant device,
the Switch automatically senses the load and
dynamically supplies the required power. The
Switch delivers power to a device using the two
data wire pairs in the twisted-pair cable. Each
port can provide up to 15.4W of power at the
standard -48 VDC voltage.
To connect a device to a port, you will need to
use Category 5 (or better) network cable.
ETHERNET G1-G4 The Switch is equipped with
four Gigabit RJ-45 ports, two that are shared with
two miniGBIC ports. If a Gigabit miniGBIC port is
being used, the associated RJ-45 port (G3 and/or
G4) cannot be used.
All four ports support auto-negotiation, so the
optimum transmission mode (half or full duplex)
and data rate (10, 100, or 1000 Mbps) can be
selected automatically, if this feature is also
supported by the attached device. If a device
connected to one of these ports does not support
auto-negotiation, the communication mode of
that port can be configured manually.
Each port also supports IEEE 802.3-2002
auto-negotiation of flow control, so the Switch
can automatically prevent port buffers from
becoming saturated.
These ports support automatic MDI/MDI-X
operation, so you can use straight-through cables
for all network connections to PCs, servers, or
additional switches.

4
Product Overview
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
Chapter 2
MiniGBIC (1-2) The Switch is equipped with
two miniGBIC ports that have shared Gigabit
Ethernet ports (G3 and G4) which provide for
the installation of one expansion module. These
ports provide links to high-speed network
segments or individual workstations at speeds of
up to 1000Mbps (Gigabit Ethernet).
To establish a Gigabit Ethernet connection using
a miniGBIC port, you will need to install a MGBT1,
MGBSX2, or MGBLH1 Gigabit expansion module
and use Category 5e cabling or fiber optic
cabling.
To establish a Fast Ethernet connection using a
miniGBIC port, you will need to install a MFEFX1
(100BASE-FX) or MFELX1 (100BASE-LX) 100SFP
Transceiver and use fiber optic cabling.
Back Panel
The console and power ports are located on the back
panel of the Switch.
Back Panel
POWER The Power port is where you will
connect the AC power.
CONSOLE The Switch is equipped with a
serial port labeled Console (located on the
back of the switch) that allows you to connect
to a computer’s serial port (for configuration
purposes) using the provided serial cable. You
can use HyperTerminal to manage the Switch
using the console port.
Side Panel
The security slot is located on a side panel of the Switch.
Side Panel
SECURITY SLOT The security slot can be
utilized to attach a lock to the Switch.

5
Connecting the Switch
48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet
Chapter 3
Chapter 3:
Connecting the Switch
Overview
This chapter will explain how to connect network devices
to the Switch. The following diagram shows a typical
network configuration.
Internet
Cable./DSL
Modem Router
Wireless
Access Point
Desktop Notebook Server
Typical Network Configuration
When you connect your network devices, make sure you
don’t exceed the maximum cabling distances, which are
listed in the following table:
Maximum Cabling Distances
From To Maximum Distance
Switch Switch or Hub 100 meters (328 feet)
Hub† Hub 5 meters (16.4 feet)
Switch or Hub† Computer 100 meters (328 feet)
A hub refers to any type of 100Mbps hub. A 10Mbps hub connected
to another 10Mbps hub can span up to 100 meters (328 feet).
†
Pre-Installation Considerations
Fast Ethernet Considerations
If you are using the Switch for Fast Ethernet (100Mbps)
applications, you must observe the following guidelines:
Full-Duplex Considerations
The Switch provides full-duplex support for its RJ-45
ports. Full-duplex operation allows data to be sent and
received simultaneously, doubling a port’s potential data
throughput. If you will be using the Switch in full-duplex
mode, the maximum cable length using Category 5 cable
is 328 feet (100 meters).
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100Base-TX
connections should also work for 1000Base-T, providing
that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any
new cable installations, Category 5e (enhanced Category
5) or Category 6 cable should be used. The Category
5e specification includes test parameters that are only
recommendations for Category 5. Therefore, the first
step in preparing existing Category 5 cabling for running
1000Base-T is a simple test of the cable installation to be
sure that it complies with the IEEE 802.3ab standards.
Positioning the Switch
Before you choose a location for the Switch, observe the
following guidelines:
Make sure that the Switch is accessible and that the
cables can be connected easily.
Keep cabling away from sources of electrical noise,
power lines, and fluorescent lighting fixtures.
Position the Switch away from water and moisture
sources.
To ensure adequate air flow around the Switch, be
sure to provide a minimum clearance of two inches
(50mm).
Do not stack free-standing Switches more than four
units high.
Placement Options
There are two ways to physically install the Switch, either
setthe Switch on itsfourrubberfeetfor desktop placement
or mount the switch in a standard-sized, 19-inch high rack
for rack-mount placement.
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Desktop Placement
Attach the rubber feet to the recessed areas on the
bottom of the Switch.
Place the Switch on a desktop near an AC power
source.
Keep enough ventilation space for the switch and
check the environmental restrictions mentioned in
“Appendix C: Specifications” as you are placing the
Switch.
Connect the Switch to network devices according to
the Hardware Installation instructions below.
Attaching the Switch’s Rubber Feet
Rack-Mount Placement
To rack-mount the Switch in any standard 19-inch rack,
follow the instructions described below.
Place the Switch on a hard flat surface with the front
panel faced towards your front side.
Attach a rack–mount bracket to one side of the Switch
with the supplied screws and secure the bracket
tightly.
Attaching the Brackets
Follow the same steps to attach the other bracket to
the opposite side.
After the brackets are attached to the Switch, use
suitable screws to securely attach the brackets to any
standard 19-inch rack.
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Mounting in Rack
Connect the Switch to network devices according to
the Hardware Installation instructions below.
Hardware Installation
To connect network devices to the Switch, follow these
instructions:
Make sure all the devices you will connect to the Switch
are powered off.
Connect a Category 5 Ethernet network cable to one
of the numbered ports on the Switch.
Connect the other end to a PC or other network
device.
Repeat steps 2 and 3 to connect additional devices.
If pre-standard or 802.3af-compliant PoE devices are
connected to the Switch’s 10/100 ports, the Switch
automatically supplies the required power.
If you are using a miniGBIC port, then connect a
miniGBIC module to the miniGBIC port. For detailed
instructions, refer to the module’s documentation.
Connect the supplied power cord to the Switch’s
power port, and plug the other end into an electrical
outlet. When connecting power, always use a surge
protector.
Power on the devices connected to the Switch. Each
active port’s corresponding LED will light up on the
Switch.
Uplinking the Switch
To uplink the Switch, connect one end of a Cat 5 (or better)
Ethernet network cable into one of the 4 gigabit ports, and
then connect the other end of the cable into the peripheral
device’s uplink port. MDI/MDIX will automatically detect
the speed and cable type.
The hardware installation is complete. Proceed to“Chapter
4: Configuration using the Console Interface”, for directions
on how to set up the Switch.
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Chapter 4
Chapter 4:
Configuration Using the
Console Interface
Overview
The Switch features a menu-driven console interface for
basic switch configuration. You can easily manage your
network from the screens through the console port.
Before you can use the console interface, you will need to
configure the HyperTerminal application.
Configuring the HyperTerminal Application
Click the Start button.
Select Programs > Accessories > Communications >
HyperTerminal.
Start > Programs > Accessories > Communications > HyperTerminal
Enter a name for this connection. In the example, the
name of the connection is SRW248G4P. Select an icon
for the application, then click OK.
HyperTerminal Connection Description Screen
1.
2.
3.
Select a port to communicate with the switch. Select
COM1 or COM2.
HyperTerminal Connect To Screen
Set the serial port settings as follows, then click OK.
Bits per Second: 38400
Databits: 8
Parity: None
Stop bits: 1
Flow control: None
HyperTerminal Properties Screen
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Chapter 4
Configuring the Switch through the
Console Interface
The Console Interface consist of a series of menus. Each
menu has several options, which are listed vertically. A
highlight in each menu lets you select the option you
wish to choose; pressing the Enter key activates the
highlighted option.
To navigate through the Console Interface, use the Up
Arrow or Down Arrow keys or use the Number keys to
select the respective option (for example, press the 5key
to highlight Help).The Enter key selects an option and the
Esc key returns to the previous selection; menu options
and any values entered or present are highlighted. Note
that the bottom of the window provides help, indicating
the appropriate keys to use.
Login
When you finish configuring the HyperTerminal, the
Login screen appears. The first time you open the Console
Interface, use the default username admin and leave
the password blank and press the Enter key. You can
set a password later from the User and Password Settings
screen.
Console Login Screen
Switch Main Menu
The Main Menu screen displays six menu choices: System
Configuration Menu, Port Status, Port Configuration, PoE
Configuration, Help, and Log Out.
Main Menu
System Configuration Menu
System Configuration Menu
System Configuration Menu options:
System Configuration
Management Settings
User and Password Settings
IP Configuration
File Management
Restore System Default Settings
Reboot System
0. Back to Main Menu.
System Configuration
From the System Information screen you can check current
firmware versions and other general switch information.
System Information
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Versions
The Versions screen displays the Boot Version, Software
Version, Loader Version and the Hardware Version.
Versions
Boot Version This file runs when the Switch is turned on.
It performs power-on diagnostics and loads the operating
system for the Switch.
Software Version This file contains the programming
code that runs the Switch.
Loader Version This file loads the software from storage
memory to main memory.
Hardware Version The current hardware setup of the
Switch.
General Information
The General Information screen displays the System
Description, System UpTime, System Mac Address, System
Contact, System Name and System Location.
General Information
Management Settings
The Management Settings screen displays the Serial Port
Configuration.
Management Settings
Serial Port Configuration
The Serial Port Configuration screen displays the current
setting for the baud rate. The baud rate can be changed by
selecting Edit then using the spacebar to toggle through
the different baud rates. Use the Save action to set the
new baud rate.
Serial Port Configuration
User & Password Settings
The User & Password Settings screen displays user account
information on the Switch. The default account is the
admin account. To add a new user, use the arrow keys to
select Edit and then press the Enter key, then enter the
user name of the new account and assign a password to
the account. The password must be re-entered into the
Again Password column to confirm the password.
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Chapter 4
You can add up to five user accounts in addition to the
default admin account. The admin account cannot be
deleted from the system.
To save the new user account information, use the arrow
keys to select Save and press Enter.
IP Configuration
The IP Configuration screen displays four menu choices:
IP Address Settings, HTTP/HTTPS, SNMP, and Network
Diagnostics.
IP Configuration
IP Address Settings
The IP Address Settings screen allows you to set the IP
information for the Switch.
IP Address Configuration
IP Address This sets the Switch’s IP Address. The default
setting is 192.168.1.5.
Subnet Mask This combined with the IP Address defines
the Switch’s network address.
Default Gateway This defines the IP Address for the
default gateway of the network.
Management VLAN Set the ID number of the
Management VLAN. This is the only VLAN through which
you can gain management access to the Switch. By
default, all ports on the Switch are members of VLAN 1,
so a management station can be connected to any port
on the Switch. However, if other VLANs are configured
and you change the Management VLAN, you may lose
management access to the Switch. In this case, you should
reconnect the management station to a port that is a
member of the Management VLAN.
WARNING: Do not define the Management
VLAN as a VLAN that has yet to be created. If
the VLAN does not exist already, the software
will automatically create the VLAN but will not
assign VLAN membership. If this happens, the
Switch cannot be managed via the web-based
utility until it has been reconfigured via the
console interface.
IP Mode Choose to have either a user-defined IP address
or to have it assigned by DHCP or BOOTP.
HTTP/HTTPS
The HTTP/HTTPS screen allows you to set the Hyper Text
Transfer Protocol server (web server) information for the
Switch.
HTTP/HTTPS
HTTP Server Enable or disable the Switch’s HTTP server
function.
HTTP Server port Set the TCP port that HTTP packets are
sent and received from.
HTTPS Server Enable or disable the Secure HTTP server
function of the Switch.
HTTPS Server port Set the TCP port that the HTTPS
packets are sent and received from.
SNMP
The SNMP screen allows you to set the Switch’s SNMP
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Chapter 4
SNMP
SNMP Server Enable or Disable the SNMP function for
the Switch.
SNMP Server Port Set the TCP port that will be used for
sending and receiving SNMP packets.
Network Diagnostics
The Network Configuration screen allows you to use PING
to test network connectivity. Enter the IP address of
the interface or device you wish to PING and select the
Execute action.
Ping
File Management
The File Management screen allows you to upload and
download files to the Switch using TFTP.
File Management
Source File Specify the location of the file to transfer.
Select one of the following:
TFTP If the file is located on a TFTP server.
Image If the file is a software code file.
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Startup-config If the file is a configuration file.
DestinationFile Specify where the fileistobetransferred.
Select one of the following:
TFTP If the file is to be uploaded to a TFTP server.
Image If the file is to be downloaded as a software
code file.
Startup-config If the file is a configuration file
Boot If the file is a boot file.
File Name Enter the name of the file to be uploaded or
downloaded.
IP Address Enter the IP address of the TFTP server that
will transfer the file.
Restore System Default Settings
To restore the Switch back to the factory default settings,
select Restore System Default Setting and press Enter.
A confirmation message appears asking Are you sure? [Y/
N]. Press the Ykey to continue or the Nkey to cancel the
action.
Restore Default
Reboot System
If you want to restart the Switch, select Reboot System
and press Enter. A confirmation message appears asking
Reboot Now? [Y/N]. Press the Ykey to continue or the N
key to cancel the action.
Reboot System
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Chapter 4
Back to Main Menu
Select Back to Main Menu if you want to return to the
main menu.
Port Status
The Port Status screen allows you to view the status of
a port. The Port, Enable, Link Status, Spd/Dpx, and Flow
Control are displayed.
Port Status
Ports 1 through 48 are Ethernet RJ-45 ports and are
all 10/100 ports. Ports G3 and G4 are shared with the
miniGBIC ports. If there is a connection to one of the
miniGBIC ports then the corresponding Gigabit RJ-45 port
cannot be used.
Port Configuration
You can use the Port Configuration screen to enable/
disable an interface, set auto-negotiation and the interface
capabilities to advertise, or manually fix the speed, duplex
mode, and flow control.
Port Configuration
Enable Allows you to manually enable or disable an
interface. You can disable an interface due to abnormal
behavior (for example, excessive collisions), and then
enable it again, once the problem has been resolved. You
may also disable an interface for security reasons.
Auto-negotiation (Port Capabilities) This option enables or
disables auto-negotiation. When auto-negotiation is enabled,
you need to specify the capabilities to be advertised. When
auto-negotiation is disabled, you can force the settings for
speed, mode, and flow control. The following capabilities are
supported.
10half Supports 10 Mbps half-duplex operation
10full Supports 10 Mbps full-duplex operation
100half Supports 100 Mbps half-duplex operation
100full Supports 100 Mbps full-duplex operation
1000full Supports 1000 Mbps full-duplex operation
Default: Auto-negotiation enabled;Advertisedcapabilities
for 100Base-TX – 10half, 10full, 100half, 100full; 1000Base-
T – 10half, 10full, 100half, 100full, 1000full; 1000Base-SX/
LX/LH (SFP) – 1000full; 100Base-FX (SFP) – 100full
Speed/Duplex Allowsmanualselectionofportspeedand
duplex mode (that is, with auto-negotiation disabled).
Flow Control Allows automatic or manual selection of
flow control.
PoE Configuration
The PoE Main Menu screen displays three menu choices
and a back option:
PoE Main Menu
System PoE Configuration
Port PoE Status
Port PoE Configuration
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Chapter 4
System PoE Configuration
The Power Configuration screen allows you to set the PoE
power allocation from the Switch to connected devices.
System PoE Configuration
The Switch’s power management enables total Switch
power and individual port power to be controlled within a
configuredpowerbudget.Portpowercanbeautomatically
turned on and off for connected devices, and a per-port
power priority can be set so that the Switch never exceeds
its allocated power budget. When a device is connected
to a port, its power requirements are detected by the
Switch before power is supplied. If the power required
by a device exceeds the power budget of the port or the
whole Switch, power is not supplied.
Port PoE Status
The Power Port Status screen allows you to view the current
PoE settings for each port on the Switch.
Power Port Status
Ports can be set to one of three power priority levels:
critical, high, or low. To control the power supply within
the Switch’s budget, ports set at critical or high priority
have power enabled in preference to those ports set at
low priority. For example, when a device is connected to a
port set to critical priority, the Switch supplies the required
power, if necessary by dropping power to ports set for a
lower priority. If power is dropped to some low-priority
ports and later the power demands on the Switch fall back
within its budget, the dropped power is automatically
restored.
Port PoE Configuration
The Power Port Configuration screen allows you to set the
PoE settings for each port. Select the Edit action and use
the left-right and up-down arrows to select the attribute
you would like to set. You can set the Admin Status, the
Priority, and the Power Allocation. Use the Save action to
save the new settings.
Power Port Configuration
Logout
Select Logout to log out of the Console Configuration
Utility.

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Chapter 5:
Configuring the Switch
Open your web browser and enter http://192.168.1.254
into the address field. Press the Enter key and the Password
screen will appear.
Address Bar
NOTE: The default IP address is 192.168.1.254.
If the IP address has been changed using DHCP
or via the console interface, enter the assigned
IP address instead of the default.
The first time you open the web-based utility, enter
admin (the default username) in the username field and
leave the password blank. Click the OK button. You can
set a password later from the Admin tab’s User Accounts
screen.
Login Screen
Setup
The first screen displays the Summary screen on the Setup
tab. There are 10 tabs across the top of the screen: Setup,
Port management, VLAN Management, Statistics, ACL,
Security, QoS, Spanning Tree, Multicast, and a More
tab. Click the More tab to access the SNMP, Admin and
Logout tabs. Each tab contains screens that will help you
configure and manage the Switch.
Setup > Summary
The Setup > Summary screen displays a summary of
Switch information. The settings cannot be modified from
the Setup > Summary screen. Many of the settings can be
modified from the Setup > Network Settings screen.
Setup > Summary
Device Information
System Name Displays the name for the Switch, if one
has been entered.
IP Address The IP address assigned to the Switch is
displayed. (The default IP address is 192.168.1.254)
Subnet Mask The Subnet Mask assigned to the Switch is
displayed (The default is 255.255.255.0).
DNS Servers The IP address of your ISP’s server, which
translates the names of websites into IP addresses.
Default Gateway IP address of the gateway router
between this device and management stations that exist
on other network segments. (Default: 0.0.0.0)
Address Mode Specifies whether IP functionality is
enabled via manual configuration (Static), Dynamic Host
Configuration Protocol (DHCP), or Boot Protocol (BOOTP).
If DHCP/BOOTP is enabled, IP will not function until a
reply has been received from the server. Requests will be
broadcast periodically by the Switch for an IP address.
(DHCP/BOOTP values can include the IP address, subnet
mask, and default gateway.)
Base MAC Address The MAC address of the Switch is
displayed.

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System Information
Serial Number The serial number of the Switch is
displayed.
Model Name The model name of the Switch is
displayed.
Hardware version The current hardware version is
displayed.
Boot Version The current boot version is displayed.
Firmware Version The current software version is
displayed.
System Location Displays the location of the system if it
has been defined.
System Contact The name of the administrator will
appear here if it has been defined.
System Uptime Length of time the management agent
has been up.
Current Time Displays the current time.
PoE Information
Maximum Available Power Displays the maximum
power that can be supplied to a connected PoE device.
System Operation Status Displays the operational status
of the Power over Ethernet mechanism.
Mainpower Consumption Displays the current number
of watts that the Switch is providing to PoE devices.
Setup > Network Settings
Setup > Network Settings
The Network Settings screen allows you to edit the
following information.
Identification
System Name Specifies the name of the Switch. Enter
the name into the text field provided. By default, a system
name is not defined.
System Location This field is used for entering a
description of where the Switch is located, such as 3rd
floor.
System Contact Enter the name of the administrator
responsible for the system.
Object ID The system object identifier is displayed here.
Base MAC Address Physical address of a device mapped
to this interface.
IP Configuration
To manually configure IP settings, you need to set an IP
address and subnet mask compatible with your network.
You may also need to establish a default gateway between
the Switch and management stations that exist on another
network segment.
An IP address may be used for management access to the
Switch over your network. You may also need to establish
a default gateway between the Switch and management
stations that exist on another network segment.
Management VLAN ID of the configured VLAN (1-4094,
no leading zeroes). By default, all ports on the Switch are
members of VLAN 1. However, the management station
can be attached to a port belonging to any VLAN, as long
as that VLAN has been assigned an IP address.
IP Address Mode Specifies whether IP functionality is
enabled via manual configuration (Static), Dynamic Host
Configuration Protocol (DHCP), or Boot Protocol (BOOTP).
NOTE: If DHCP/BOOTP is enabled, IP will not
function until a reply has been received from the
server. Requests will be broadcast periodically
by the Switch for an IP address. If the mode is
set to DHCP/BOOTP and a server is not available,
you can reconfigure the settings by connecting
the console interface directly to a computer.
Select the IP Address Mode using the drop-down
menu. Selecting Static will allow you to enter a static IP
address, subnet mask and default gateway using the text
field provided. Selecting BOOTP or DHCP disables these
text boxes and auto assigns an IP address. The default
setting is Static.
Host Name Assign a host name to the switch.

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IP Address Address of the VLAN interface that is allowed
management access. Valid IP addresses consist of four
numbers, 0 to 255, separated by periods. (Default:
192.168.1.254)
Subnet Mask This mask identifies the host address
bits used for routing to specific subnets. (Default:
255.255.255.0)
Default Gateway IP address of the gateway router
between this device and management stations that exist
on other network segments. (Default: 0.0.0.0)
DNS Server Enter the IP address of the DNS server into
the text field. A second DNS address can be specified in
the additional text field provided.
Click Save Settings to save the changes.
Click Restart DHCP to assign a new IP address using
DHCP.
Setup > Time
Simple Network Time Protocol (SNTP) allows the Switch
to set its internal clock based on periodic updates from a
time server (SNTP or NTP). Maintaining accurate time on
the Switch enables the system log to record meaningful
dates and times for event entries. If the clock is not set, the
Switch will only record the time from the factory default
set at the last bootup. When the SNTP client is enabled,
the Switch periodically sends a request for a time update
to a configured time server. You can configure up to two
time server IP addresses. The Switch will attempt to poll
each server in the sequence.
Setup > Time
Set Time
Set the system time manually This option allows you to
set the time and date manually for the Switch.
Set the system time using Simple Network Time
Protocol (SNTP) automatically Sets the system clock
automatically using SNTP.
Manual
Hours The hour is entered here.
Minutes The minutes is entered here.
Seconds The seconds is entered here.
Month The month is entered here.
Day The day is entered here.
Year The year is entered here.
Automatic
Sets the system clock automatically using SNTP.
Time Zone Set the time zone by selecting it from the
drop-down menu.
Daylight Savings Enable daylight saving time by
checking the checkbox. Then set USA, Europe, or custom
daylight saving time by clicking the appropriate option.
Time Set Offset Custom daylight saving time is set by
entering the time difference in minutes into the Time Set
Offset field. Set the date for this offset by entering the day
and month (DD/MM) in the From and To fields.
Recurring To enable a recurring custom daylight savings
time, check the Recurring checkbox. Set the day, week, and
month the time difference will be recurring (From and To)
by using the drop-down menus. Set the time (From and
To) of the recurrence using the field provided (HH:MM).
SNTP Servers
Sets the IP address of up to two SNTP servers.
Server 1 Set the IP address of the SNTP server.
Server 2 Set the IP address of an additional SNTP server.
Polling Internal (16-16384 sec) The value entered here
determines the number of seconds between each time
the Switch contacts the SNTP server for an update.