An Intel product, when used in accordance with associated documentation, is “Year 2000 Capable” when, upon installation, it accurately stores, displays, processes, provides, and/or receives data from, into, and between the twentieth and twenty-first centuries,
including leap year calculations, provided that all other technology used in combination with said product properly exchanges date
data with it.
Intel Corporation assumes no responsibility for errors or omissions in this manual. Nor does Intel make any commitment to update the information contained herei n .
*Other product and corporate names may be trademarks of other companies and are used only for explanation and to the owners’
This User Guide is one of three sources of informat ion delivered with
this switch.
Information type...Given in...
Getting started quicklyQuick Start (printed)
How to customize your switchUser Guide (printed)
Context sensiti ve helpHelp (online)
Quick Start descriptionA printed guide that describes these basic steps:
•
Connect the switch
•
Start the switch (using the default settin gs)
•
Start Intel Device View
•
Change the setup
•
Save a new setup to the memory
•
Access Local Management
•
And, the legal declarations and warnings
User Guide description
(this guide)
Help descriptionOnline, context-sensitive help text for each dialog box, providing in-
A printed guide containing full instructions on h ow to install the
switch and operate the switch using Intel Device View.
formation about the p ermitted limits for the par ameters used.
vii
PREFACE
Warning
Products coveredThis User Guide gives you instructions on how to use:
Electrostatic Sensitive Devi ce
Electrostatic Sensitive Device
Do not handle the printed circuit board unless the working area is static-free!
•
Intel Express 520T Switch
•
Intel Device View
0887
Prerequisite knowledgeThis User Guide is i ntended for personnel autho rized to configure and
manage local area networks. We assume that the person has an advanced technical background within data communication and networks.
Opening this pro duct must be done only by a net work manager or person who is qualified and authorized to install electrical equipment,
and who is aware of the hazards to which he/she is exposed. This person must have an advanced technical background within data communications and networks.
Conven tion s in this manualThis manual uses the following conventions:
File names, commands and examples
All file names, commands and exampl es are shown in the COURIER
typeface.
Menu and submenu names
Menus, for example File or View, are shown in normal typeface with
lowercase and uppercase letters displayed as shown on the screen.
viii
PREFACE
Access to submenus
You access submenus using a menu hierarchy. These are shown by
use of angle brackets and the courier typeface. For example,
File>Configuration>Setup shows that to select t he Setup sub-
menu you must first click File and then Configuration.
AcronymsARP Address Resolution Protocol
ASIC Application-Specific Integrated Circuit
AUI Attachment Unit Interface
BPDU Bridge Protocol Data Unit
CRC Cyclic Redundancy Check
DHCP Dynamic Host Configuration Protocol
ICMP Internet Control Message Protocol
IGMP Internet Group Message Protocol (for IP Multicast)
IEEE Institute of Electrical and Electronic Engineers
IP Internet Protocol
LAN Local Area Network
MIB Management Information Base
RAM R andom Access Memory
RMON Remote Monitoring
RIP Routing Information Protocol
RSVP Resource Reservation Protocol
SNMP Simple Network Management Protocol
STP Spanning Tree Protocol
TFTP Trivial File Tra nsfer Protocol
ToS Type of Service
UDP User Datagram Protocol
VLAN Virtual Local Area Network
ix
Intel Express 520T
1
In this chapterThis chapter covers the following topics.
Switch
TopicSee Page
Introduction to the product2
Front Panel3
Rear Panel5
Installation5
1
C H A P T E R 1Intel Express 520T Switch
Introduction to the product
Purpose of the switchThe Intel Express 520T Switch uses your existing network cables to
integrate switching technology into your computer network.
Each device in a workgroup or a network segment can communica te
at a full wire-speed of 10Mbps or 100Mbps to provide:
•High-speed connectivity
•Simultaneous two-way communication between connected
devices
•Increased network throughput and performance
•Increased server availability
Physical featuresThis switch offers the following features:
•Plug-and-play—no need to configure the modu le to use the basic
operations
•12 x 10/100Mbps connections
•Two option slots for modules
•Front panel LEDs that show switch, port and traffic status
•Automatic detection of 110V and 240V power supplies
Hardware featuresThe switch offers the following features:
•Each port can operate in one of three switching modes: cut-
through, fragment-free or store-and-forward
•Each port supports half- and full-duplex operation
•Sim ultaneous full wire-speed switching on all ports
•RMON support for Statistics, History, Alarm and Events
•Spanning tree support on all ports
•Flow control
•Permanent MAC address entries
2
C H A P T E R 1Intel Express 520T Switch
Software features
The switch offers the following features:
•Intel Device View for W i ndows* 95, W indows* 98 and W indows
NT* or Intel Device View for Web
•Adaptive forwarding mode
•Local Management via a direct terminal connection or via TEL-
NET
•SNMP Management support
•BOOTP and TFTP support
•Control over user access rights
•Creation of virtual LANs
•Stand-alone (per switch or stack) or distributed (swi tch networ k )
VLAN
•IGMP Pruning
Front Panel
IntroductionThe LEDs on the front panel show the status of the ports, so you
should position the switch with the front panel facing you. You can
also see which ports the cables are connected to on the switch.
View of the front panelThe front panel of the switch is shown below:
SlotBSlot A
123876549 10 11 12
LEDsGreenOrange
Off 10Mbps Halfduplex
Solid 100Mbps Fullduplex
PortStatus
LEDsGreenOrange
Solid Link Disable
Blink Activity Collision
®
Int el E xpress
520T Sw i tch
Status
Temperature
RPS
Console
9600-8-N-1
Power
Reset
1733
3
C H A P T E R 1Intel Express 520T Switch
Front panel ports
These ports are on the front panel:
PortFunction
CONSOLE port
(DB-9)
Connects a PC (running a VT100 emulation), a VT100 terminal or a modem to
access the built-in Local Management program.
12 x 10/100BaseTX ports (RJ-45)
Connects devices using Unshiel ded T wisted
Pair (UTP) cab ling complying to EIA568A
Category 5 or ISO/IEC 11801 Category 5
level D.
Slots for modulesAfter removing one or both of the cover plates, the modules can be
inserted to expand the functionality of the switch.
Front panel LED functionsThe LEDs on the front panel have the following functions:
LED
Shows the status for...
Port LEDs -
The operation of each port.
Green and Orange
StatusThe operation of the switch.
PowerThe internal power supply.
TemperatureThe internal temperature.
RPS (redundant
The external, redundant power supply.
power supply)
ButtonsThe buttons on the front panel have the following functions:
Button nameFunction
Port StatusShows the operational status of each port.
ResetReset or enter Maintenance Mode or Recov-
ery Mode
4
C H A P T E R 1Intel Express 520T Switch
Rear Pa nel
IntroductionThe rear panel has a cooling fan ou tlet and the main suppl y cable, so
you should position the switch with the rear panel f acing away fro m
you.
View of rear panelThe rear panel of the switch is shown below:
Input
100-120VAC/2A
200-240VAC/1A
47Hz-63Hz
RedundantPower Supply (RPS)
1741
Rear panel partsThe switch’s rear panel has the following parts:
PartFunction
Fan outletCools the internal circuitry of the switch.
Power connectionA socket to connect the power cord to the
main supply.
Redundant power
supply connector
Connects an external redundant power supply. If the internal power supply fails, the
redundant power supply starts immediately.
Installation
ImportantYou must adhere to all local and national regulations governing the
installation and connection of electrical devices when installing the
switch.
5
C H A P T E R 1Intel Express 520T Switch
Before Installation
Contents of the packUnpack the switch carefully and check that these parts are present:
ItemPresent?
One Intel Express 520T Switch
One power cord (suitable for your
power outlet)
One moun ting kit
One CD-ROM
One Console cable
One Quick Start
One User Guide (you are reading it)
Late-breaking News
Intel Support Service papers
Check the package
contents
If you have not received all of the parts, or any of the parts are damaged, contact your dealer immediately.
Keep all the packaging materials in case you need to repack the
switch.
Check all labelsRead all labels and rating plates on the switch. If there is any thing that
you do not understand , or if any of th e informati on provided does no t
appear to comply with your local or national rules and regulations,
consult your dealer before proceeding with the installation.
Essential readingIt is important that you read th e following:
•“Late-breaking News”.
This contains essential i nformat ion you sho uld be aware of when
installing and using the product; for example, limitations and
compatibility issues.
•Warnings and the instructions earlier in this guide.
•The README.TXT file on the CD-ROM. This gives a general
6
description of the software and specific requirements.
C H A P T E R 1Intel Express 520T Switch
Positioning and Installing the Switch
Allow adequate ventilationThe switch contains two fans to air-cool the internal circuitry. The air
is drawn in from the left of the unit and expelled through the outlet
grills on the right side and the rear.
To ensure correct airflow, leave 100 mm (4 inc hes) free space on both
sides and behind the switch. Do not allow t he intake or outle t grills to
become blocked.
On a desktopTo install the switch in a desktop environment:
1Find the four rubber feet in the pack that contains the rack
mounting kit.
2Remove the backing strip from each of the four feet.
3Attach the four rubber feet to the underside of the switch (to
ensure that the switch stands firmly).
4Place the switch on a stable, flat surface.
5Ensure tha t th e air intake (on the left) and fan outlets (on the
right side and rear ) are not blocked.
WarningThe switch’s lifetime and operational reliability can
be seriously degraded by inadequate cooling.
Rack requirementsInstall the switch in a standard rack in accordance with IEC297 (or
similar); if th e minimum out side mea surements of the rack are 600 x
600mm (23.5 x 23.5inches), you must allow 190mm (7.5 inches) of
space at the rear.
Mounting kitThe switch is delivered with a kit to attach it to a standard 19-inch
equipment rack (wit h side sup port rai ls). The ki t contains two mounting brackets and four screws (for attaching the brackets to the sides
of the switch).
Tools required for
positioning in a rack
In addition to the mounting kit, you need the following items to
mount the switch in a rack:
•Standard 19-inch rack with side support rails.
•3 mm screwdriver.
7
C H A P T E R 1Intel Express 520T Switch
•Customer-supplied screws for securing the switch in the rack.
Mounting screws are not provided because the required sizes
may vary from rack to rack.
In an equipment rackTo mount the switch in a standard equipment rack:
1Attach the mounting bracket marked “ Left” to t he left-hand side
of the switch, and attach the mounting bracket marked “Right”
to the right-hand side of the switch, using the four screws provided.
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Make sure that you attach the mounting brackets to the correct
sides. Otherwise the switch will not align correctly in the
equipment rack.
2If the four rubber feet prevent the switch from standing firmly
on the equipment rack’s side support rails, remove them.
3Set the switch in the equipment rack, and make sure there is
adequate space for air flow around the switch (see “Allow adequate ventilation ” in “Posit io ni ng and I nstall i ng t he Swit ch”, p.
7).
4Screw the mounting brackets securely to the equipment rack.
Ambient temperatureIf the switch is installed in a closed or multi-rack assembly, the oper-
ating ambient temperature of the rack environment may be greater
than the ambient temperature of the room. Make sure that the temperature of the rack environment does not exceed the recommended operating temperature for the switch.
8
C H A P T E R 1Intel Express 520T Switch
Installing a Module
IntroductionYou can increase the connecti vity options of your switch by installing
a module.
WarningModules are not designed to be installed in, or removed
from, the switch while it is in operation. You must
power off the switch before attempting to install or
remove a module.
Static-free working areaThe m odule’s printed circu it board is an Electrostatic Sensitive De-
vice and should be handled only in a static-free working area; otherwise, the printed circuit board may fail or be degraded.
Avoiding damage to the
circuit board
If you remove the plate covering the slot on the front of the switch,
for example, to install or remove a module, follow this procedure to
avoid damage to your printed circuit board:
WarningDo not remove the plate unless the switch is discon-
nected from the main power supply.
1Disconnect the switch from the main power supply.
2Ground the switch before you handle the printed circuit board.
3Connect yourself to a non-painted/non-isolated part of the
grounded switch (for example the back panel) using a wrist
strap wi th 1MΩ resistance to ensure that you carry the same
electrostatic charge as the enclosure.
4Remove the plate covering the slot.
Installing a moduleTo install a module:
1If the switch is already operational, disconn ect it from th e main
power supply.
2Follow the instructions in “Avoiding damage to the circuit
board” above.
3Unscrew the screws of the plate covering the slot on the front of
the switch. Save these screws and plate.
4Insert the module into the slot (following the instructions in the
module’s User Guide). Place your thumbs just beneath the
screws on the front panel of the modul e and push in th e module.
Secure it using the retaining screws.
9
C H A P T E R 1Intel Express 520T Switch
Removing the module
To remove a module:
1If the switch is already operational, disconnect it from the main
power supply.
2Follow the instructions in “Avoiding damage to the circuit
board” above.
3Unscrew the screws securing the module.
4Pull the module gently to disengage the connectors fully from
the socket on the motherboard. Slide the module out completely.
5Cover the empty module port with the plate and secure using
the screws.
Connecting Other Devices
IntroductionIncorrect cabling is often the cause of network configuration prob-
lems
Use shielded cablesShielded cables normally comp ly with EMC and FCC emission lim-
its.
Only use unshielded cables when it is explicitly specified in the in-
stallation manual of the device in question.
Cables for the LAN PortsPorts on the switch are wired MDI-X, so use the following cable:
If you connect the switch to a...Then use a...
Workstation or serverStraight-through cable 1:1
Device with MDI-X ports (for exam-
Crossover cable
ple another Intel switch or hub)
Device with MDI portsS traight-throug h cable 1:1
10
C H A P T E R 1Intel Express 520T Switch
RJ-45 connector pin
assignments
Connecting a de vice to the
RJ-45 ports
The RJ-45 ports on the front of the switch have the following pin assignments:
Pin numberFunction
1RX+
2RX3TX+
6TX-
To connect a workstation compatible with IEEE 802 .3 (Ethernet Version 1.0 and 2.0) or a fast access device (such as a server) to the
switch’s RJ-45 ports using UTP cable (Category 5):
1Make sure that the device has a 100Mbps (100Base-FX or 10/
100Base-TX) network interface card installed.
If not, use your network interface card’s documentation to
install and configure it c orrectly.
2If your workstation is fitted with an RJ-45 interface then there i s
no problem. However, it is possible t o at ta ch t o ot her con nect or
types using an appropriate adapter. For example, use a UTP/
10Base-FL adapter for fiber connections
3Connect one end of the UTP cable to an RJ-45 port on the
switch.
According to IEEE 802.3, the cable le ngth must not exceed 100
meters (approximately 325 feet).
4Connect the other end to the 100Base-TX connection on the
device.
Connecting the
management PC
To manage the switch from a PC connected directly to the switch, the
PC must not use frame tagging. To manage the switch from a PC with
IEEE 802.1Q tagged frames, management must be through a device
which untags the frames.
Cable fo r the C on sol e PortIf you connect a PC (via th e Console Port), then use a null- modem ca-
ble.
11
C H A P T E R 1Intel Express 520T Switch
Connecting the Power
IntroductionAfter connecting the d evi ces to the switch, con nect th e power cabl e.
There are certain practical and safety considerations to be made before powering the switch on.
The Po w er Cable
Ground warning The switch is delivered with a power cable that fits the power sockets
in your countr y. If thi s is no t the case , conta ct your dealer immed iately and ask for the correct power cable.
Power cable wiring color
code
The wires in the power cable provided are color coded:
ColorConnection
Green and yellowGround
BlueNeutral
BrownLive
Important for U K useIf the colors of the wires in the power cable provided do not corre-
spond with the markings that identify the terminals in your plug:
1Make sure that the green and yellow wire is connected to the
terminal marked with the letter E, or with the ground symbol
, or is colored green and yellow.
2Make sure that the blue wire is connected to the terminal
marked with the letter N or colored black.
3Make sure that the brown wire is connected to the terminal
marked with the letter L or colored red.
Power supply to a rackIf the switch is installed in a rack, make sure the rack’s power supply
socket has a ground connection an d the rack is con nected to a branch
supply or a power supply socket with a ground connection.
To avoid overloadi ng the circui t and damagi ng the wiring of the power supply, the power supply to the rack must be adequ ate to c over the
extra power consumed by the switch.
12
C H A P T E R 1Intel Express 520T Switch
Power up
Powering up the switchFo llow these steps to powe r up the switch:
1Push the female end of the power cable into the main socket (i n
the rear panel); plug the other end into the power supply outlet.
2Make sure that the Power LED (on the front panel) is green.
If it isn’t green, make sure that the power outlet is working correctly (switched on). If the power outlet is on and the Power
LED is not green, then the re i s a fau lt within the switch and
you must contact your dealer.
3Verify that an LED is lit for each of the front panel ports where
a powered on device is connected.
Start-up procedureImmediately after power-up, the following should happen during
start-up:
StageSTATUS LED...Then the switch...
1Is redIs starting up
2Turns to steady greenHas started successfully
If the Status LED remains red, then the switch has no t started successfully. Try to re start it; if the switch doe s not start, cont act your dealer.
Look at the other front panel LEDs during start-up and check that
they are operating correctly.
Port LED s tatesThe LEDs reflect the state of each port:
LEDIndicates
No lightsPort enabled, no link.
Green, blinking
randomly
Port enabled, RX/TX traffic, link pulse
active.
Green, solidPort enabled, link pulse active.
13
C H A P T E R 1Intel Express 520T Switch
LEDIndicates
Default se ttin gs afte r st artup
Green and Orange both
blinking r andomly
Collision detected (with half duplex).
Port enabled, link pulse active.
Orange, solidPort disabled by management.
Green and Orange both
solid
Port dis abled by a hardware fault, or no
hardware connected.
Once the switch has started successfully, installation is complete and
the switch is using its default setti ng (al s o known as default confi guration):
•All ports are enabled.
•All ports operate in auto-negotiation mode.
•Spanning Tree is disabled on all ports.
•Addresses that have been silent for more than 15 minutes are
purged from t he swit ch’s address table (the MAC Add re ss Agi ng
time).
•No access restrictions to Local Management (Telnet).
•No SNMP restrictions.
•No permanent MAC address entries defined. A permanent entry
is a MAC address that is defined as being permitted only on a
certain port. This can be a useful security feature.
•All ports are in the same VLAN (named <System>) and VLAN
mode (Stand-alone mode). VLANs allow you to create virtual
networks using specific switch ports, IP addresses, IP subnets
and MAC addresses.
•Flow Control is enabled on all ports.
•The connection with Local Management is timed-out after 10
minutes if there has been no input during this period.
After start-upThis default confi guration is adequa te for simple wor kgroup environ-
ments to operate in basic switching mode.
Although the switch continues to operate without problems, we rec-
ommend that you change cert ain parameters t o suit your own requ irements.
14
C H A P T E R 1Intel Express 520T Switch
Follow the instructions in Chapter 2 to change the configuration
while the switch is opera ting.
Other LEDs on the front panel
IntroductionThere are three other LEDs and one button on the front panel that
show how the switch is operating:
•Status LED
•Temperature LED
•Redundant Power Supply (RPS) LED
•Port Status button
LED colors and their
meanings
The LEDs give information about the state of the switch:
LEDColorMeaning
StatusGreenSolid: The switch is operating normally.
Blinking (1 Hz): Updating software or
running in recovery mode.
Blinking (5 Hz): Running in maintenance mode.
RedThe switch is resetting, or either hard-
ware or software errors are detected.
TemperatureGreenNormal operating temperature.
OrangeTemperature is higher than normal.
Check that the area around the ai r in takes
and vents are clear of obstructions.
RedTemperature is too high and the switch
will shut down.
RPSGreenOff: No RPS connected.
Solid: RPS connected, but not needed.
OrangeNormal power supply has failed and the
RPS has taken over.
15
C H A P T E R 1Intel Express 520T Switch
Port Status button
To see the speed and duplex set tings of al l the po rts, press the Port
Status
button. The function of the port LEDs changes for a period
of 5 seconds, where they have the following meaning:
LEDColorMeaning
Left (Speed)GreenOff: 10Mbps
Solid: 100Mbps
Right
(Duplex)
OrangeOff: Half duplex
Solid: Full duplex
16
2
In this chapterThis chapter covers the following topics.
Intel Device View
TopicSee Page
System Requirements18
Installation and Removal19
Using Intel Device View20
Installing and Managing Switches26
Device Tree29
Device View (Main Display)31
Explorer36
Diagnostics Window37
Trap Window38
System Window39
Errors Window39
17
C H A P T E R 2Intel Device View
System Requireme nts
Requirements f or Inte l
Device View under
Windows
You need a PC with the following minimum requirements to run Intel
Device View:
•Microsoft Windows NT workstation or server, version 4.0, or
Microsoft Windows 95 or Microsoft Windows 98.
(Windows NT 4.0 English language version workstation recommended.)
•A network adapter installed.
•30 MB of free hard disk space.
•A color display with 800 x 600 resolution and 256 colors.
•The Microsoft IP protocol must be installed and configured
before installation of Intel Device View.
DHCP limitationThree important things to know:
•Do not use a PC running Windows NT server (with its DHCP
server installed) to run Intel Device View.
•Ensure the IP address for the PC is not changed by the DHCP
server.
Management PC
restrictions
Requirements f or Inte l
Device View on the Web
server
•PCs that use a network management system that uses BootP,
DHCP or SNMP Trap Receiving, may have their network management system disabled by Intel Device View.
To manage the switch from a PC connected directly to the switch, the
PC must not use frame tagging. To manage the switch from a PC with
IEEE 802.1Q tagged frames, management must be through a device
which untags the frames.
You need a PC with the following minimum requirements to run Intel
Device View:
•One of the following running: Microsoft Windows NT 4.0 Server
with Internet Information Server (IIS) 2.0 or later; or Windows
NT Workstation with Peer Web Services.
•30 MB of free hard disk space.
•The Microsoft IP protocol must be installed and configured
before installation of Intel Device View.
18
C H A P T E R 2Intel Device View
Web server rest rictions
Requirements f or Inte l
Device View on the Web
client
Requirements f or Inte l
Device View with plugin
To manage the switch from a web server connected directly to the
switch, the web server must not use frame tagging. To manage the
switch from a web server with IEEE 802.1Q tagged frames , management must be through a device which untags the frames.
To run Intel Device View, the client requires:
•Microsoft Internet Explorer (4.00) running on Windows 95 or
Windows 98 or Windows NT 4.0.
•A color display with a minimum o f 80 0 x 6 00 resolution and 256
colors.
To run Intel Device View with a plugin , the PC must be r unning HP
OpenView* or Intel LANDesk Manager.
Installation and Removal
To start the installation of
Intel Device View
Normally, the Setup program for Intel Device Vie w will start automatically after you insert the compact disc (CD) in your CD ROM
drive. However, if it does no t, us e the sta ndard Win dows procedur es
for installing programs. A screen similar to the one below is displayed:
19
C H A P T E R 2Intel Device View
T o insta ll Intel Device Vie w
for Windows
Click Install Windows and follow the on-screen instructions.
When the installatio n is complete, Intel Device View will start auto-
matically when “Launch Intel Device View” is selected.
T o insta ll Intel Device Vie w
for Web
Click Install Web and follow the on-screen instructions. When
the installation is complete, Intel Device View will start automatically when “Launch Intel Device View” is selected.
T o insta ll Intel Device Vie w
when using HP
OpenView* or Intel
LANDesk
®
Manager
Click Install Plugin and follow the on-screen instructions.
When the installatio n is complete, Intel Device View starts automat-
ically when “Launch Intel Device View” is selected.
Removal of Intel Device View
Removal under WindowsTo remove Intel Device View under Windows:
1Close all Intel Device View programs.
2Use standard Windows procedures to uninstall Intel Device
View.
Using Intel Device View
ConceptIntel Device View configures all the parameters on your switch, or
group of switches known from here on as a stack, (via SNMP) and
monitors their activities.
20
C H A P T E R 2Intel Device View
Navigating through Intel
Device View
The Intel Device View
window
Basic menu bar
commands
Many commands are available from within Intel Device View. These
are best accessed using mouse actions. However, Windows users c an
also access most of them through the menu bar.
There are three sections:
•Device Tree — displays the separate branches on your LAN,
including a branch showing all unconfigured devices.
•Interactive picture of the switch, or stack — shows the port state
or the Explorer, which provides port and VLAN details for the
switch or stack.
•Information section — provides details about diagnostics, traps,
errors and the system. Using this window, you can show activity
statistics for the switch (or the stack) and for individual ports.
Before a switch is contacted
Before a switch or stack is contacted, the following commands are
available through the menu bar. The toolbar buttons are for users using Intel Device View in Windows.
File menu This contains one command, Exit which enabl es you to exi t the Intel
Device View. When a switch or stack is open and the configuration
has been changed and not saved to the Flash Memory as the permanent configurati on, yo u are asked i f you want to save th e new conf iguration before exiting.
Device menuThe Device menu contains the following switch commands:
•Install — enables you to install a new device, which does not
have an IP address, in Intel Device View. Can also be accessed
by selecting .
•Manage — enables a switch or stack that has an IP address
already assigned to be managed or configured. Can also be
accessed by selecting .
•Discover — enables you to set up how the Device T r ee discover s
devices and users.
Note: do not leave the Subnet Mask blank or set to 0.0.0.0, as
Intel Device View will continually broadcast device discovery
messages to all networks and use bandwidth.
21
C H A P T E R 2Intel Device View
•A list of IP addresses — contains the last eight switches success-
fully contacted from Intel Device View. These can be used to
manage the switch.
View menu — for
Windows users only
The View menu allows you to customize the Intel Device View display to your own preferences: the Toolbar and Status Bar can be
switched on and off.
Monitoring menuThis menu gives access to set t he Default Preferences for Intel Device
View, see “Setting the Preferences”, p. 24.
Tools menuThe Tools menu has the following commands:
•Ping — sends ICMP echo packets to the switch. Can also be
accessed by selecting .
•A Report Manager — uploads reports, logs and the parameter
block from the switch. Can also be accessed by selecting .
•A Recovery Manager — regains control of your switch if you
have lost contact. This is described in “Recovery Manager”, p.
94.
•A DNS-IP conversion tool converts DNS names to IP addresses.
These are described in de tail, together with switc h specific tools, in
the Chapter “Managing the Switch”, p. 71.
Help menuThe Help menu ha s the following commands for the switch:
•Help for Intel Device View. Can also be accessed by selecting the
•Help for switch specific topics.
22
Help icon then clicking on the feature of interest
C H A P T E R 2Intel Device View
After a Switch or Stack is Contacted
CommandsWhen Intel Device View contacts a switch, the basic commands are
supplemented with :
•Local Management access — provides Telnet access to monitor-
ing functions embedded in the switch.
•RMON facility — gathers information about the network traffic,
monitors traffic on subnets and enables you to define alarms on
the individual ports.
•Stack Synchronization Manager (for stacks only) — enables you
to establish a stack from a group of switches connected via a
Matrix Module, or add a swi tc h to an existing stack and then synchronize their configurations.
•Switch Position Organizer (for stacks only) — enables you to
move the switches displayed on screen around in the stack.
ual ports on the Matrix Module. This simplifies the task of tracing cables, as the ports on the Stack Interface Modules become
the same color as the corresponding Matrix Module port.
•A color coding chart for Intel Device View to show the states of
switch’s LEDs
23
C H A P T E R 2Intel Device View
Setting the Preferences
Setting the polling
intervals
The polling intervals det ermine how often Intel Device View contacts
the switch or stack and updates the status and infor mation displayed.
To change the polling parameters:
1Select Monitoring>Preferences.
2Click Polling or Monitor.
3If you want the polling to happen more frequently than just on
opening, click
Periodically.
4Move the Interval slider to the requ ired time.
5Click OK.
24
C H A P T E R 2Intel Device View
Setting the timeout
parameters for SNMP
The timeout determines the intervals between polling and the number
of times the req uest is retr ied if a de vice is not r esponding. T o change
the timeout parame ters:
1Select Monitoring>Preferences.
2Click Timeouts.
3Change the values.
Setting the community for
SNMP polling
4Click OK.
The community for SNMP polling determines access rights. To
change the community:
1Select Monitoring>Preferences.
2Click Community.
3Type the new community name.
4Click OK.
25
C H A P T E R 2Intel Device View
Installing and Managing
Switches
Following installation of
Intel Device View
Adding new s w itchesTo add new switches (that have not been assigned an IP address) to
The Install WizardThe Install Wizard requires that you enter a minimum amount of in-
After installing Intel Device View, you can add new switches, establish or expand stacks of switches, and manage existin g switches and
stacks.
Intel Device View, select
will start and guide you through the installation.
formation to set up the switch fo r management by Intel Device View.
To select th e correct new device, yo u need to know the device’s MAC
address. You can find this on a label on the rear panel of the device.
You must assign an IP address (and subnet mask) to the switch on
your Local Area Network (LAN).
Device>Install. The Install Wizard
Intel Device View uses this address for configuration and management purposes.
26
C H A P T E R 2Intel Device View
Matrix Module connected
to a new switch
When the Install wizard detects that a new switch is connected to a
Matrix Module, a message in forms that you must decide ho w to manage the switch.
If you want to manage it separately, the installation is completed and
the switch is displayed in the Intel Device View window. If you wan t
to manage it as part o f a stack, you have th e opportunity t o assign consecutive IP addresses in the next dialog.
Managing an existing
switch or stack
The Synchronization Wizard completes the installation. The complete stack, including the new switch, t hen appears in the Intel Device
View window. The Synchronization wizard is described in detail in
“Stack Synchronization Manager”, p. 95.
To manage a switch or stack that h as an IP add ress already assigned:
1Select Device>Manage The Manage dialog box appears.
2Type in the switch’s IP Address or MAC address.
27
C H A P T E R 2Intel Device View
3Select the box if you want to open the switch in a new Intel
Device View window.
4Click OK.
Establishi ng and
expanding a stack
If you connect switches that already have IP addresses assigned together via a Matri x Modu le, you can ma nage the m as a stack . To create or expand an existing stack:
1Select Device>Manage, and the Manage dialog opens.
2Type in the IP Address or MAC address of one of the switches.
All the switches connected via the Matrix Module are di splayed
in this window, even switches that are already configured as a
stack.
3If the switches don’t have compatible software, the Upgrade
4Select Stack Mana ge me nt .
5Select OK. The Upgrade W izard st arts a utomatica lly i f soft ware
28
box is checked. If one or more of the switches aren’t configured, the Configure IP address box is check.
needs to be upgraded.
C H A P T E R 2Intel Device View
Device Tree
IntroductionThe Device Tree displays the separate subnets on your LAN as
branches in a tree. This includes a branch that shows all the unconfigured devices on the LAN.
Identifying devicesThe Device Tree uses several ic ons to rep resent the i ndividual devic-
es:
Icons Device Description
Recognized as a switch.
Recognized as a router.
Recognized as a hub.
Device contacted, but not recognized.
Lost contact with device.
29
C H A P T E R 2Intel Device View
Installing and managing
switches
Right mouse button
commands
Double clicking the switch’s IP address or MAC address opens e xisting switches in the Intel Device View window, or start s the Install
Wizard for new switches.
By positioning t he mouse point er in th e Device Tr ee and cl icking th e
right mouse button, the following functions are available:
Functions Description
(without a device selected)
View
IP AddressSorts the devices by their IP addresses.
NameSorts the devices by their DNS names.
Add DeviceIf a device has not been auto-detected
then you can add it to the tree. You need
to know its IP address.
FindLocates a specific device by searching for
its IP address.
RefreshPolls the network and redisplays the tree.
If a new device has been connected, it
will appear after a refresh.
(additional functions with a device selected)
Launch WithOpens the switch in Intel Device View.
DeleteRemoves a device from the Device Tree.
EditChange the name, community settings
(read and write) and polling rate of the
device.
RMON
StatisticsProvides subnet management statistics.
HistoryLists monitored traffic on a subnet.
AlarmsEnables activity alarms to be set.
LogsSets events defined by Log, Trap or Log
and Trap.
30
C H A P T E R 2Intel Device View
Device View (Main Display)
Switch contactedWhen Intel Device Vi ew contacts the switch or stack, the front (inter-
face side) of the switch or stack is displayed.
This view provides a real-time v iew of the switch, or stack and ports,
which behave in the same way as the physical switch. For example,
the LEDs change color acc ording to the stat e of the switch/stack. You
can fully manage the switch or stack using this display.
Mouse movesUsing a mouse makes it easier to operate Intel Device View and saves
you time:
Mouse actionInformation
Right-click switch Shows the switch-related men us for
configuration and monitoring.
Right-click stack borderShows the stack-related menus for
configuration and monitoring.
Right-click a portS hows the port-related menus for
configuration and monitoring.
Double left-click switchOpens the Device Setup menu.
Double left-click a portOpens that port’s Setup menu.
31
C H A P T E R 2Intel Device View
Right mouse button
commands f or a sing le
switch
Right click a single switch and Intel Device View offers:
Functions Description
Device SetupDisplays comprehensive information
about the switch’s overall setup.
VLAN SetupProvides an overview of existing VLANs
and the opportunity to add new ones or
change existing ones.
Device InformationInforms you about the type of switch, its
location, who is responsible for it and the
amount of time passed since the switch
was restarted.
Port OverviewGives detailed monitoring information for
each port.
Device ActivityDisplays, in a graph fo rm a t, information
about the activity on the ports.
VLANDisplays monitoring information and the
status of the VLAN links.
DeviceReboots the switch and provides informa-
tion about the firmware in the switch. Also
enables the switch’s firmware to be
upgraded.
ConfigurationEnsures the switch’s configuration is safe
by saving it to the flash memory, by backing up to disk and by being able to restore
it again should it be lo st. If necessary, the
switch can be returned to the factory
default configuration.
MonitoringProvides comprehensive details for Span-
ning Tree statistics and RMON facilities,
as well as Hardware information and an
Access Overview.
32
C H A P T E R 2Intel Device View
Right mouse button
commands f or a stack
border
When managing a stack of switches, r ight cl ick the stack border and
Intel Device View offers:
Functions Description
Stack SetupDisplays comprehensive in formation
about the switch’s overall setup.
VLAN/Routing SetupProvides an overview of existing VLANs
and the opportunity to add new ones or
change existing ones.
IP Filtering SetupDefines user groups and filters the packets
sent to them.
Stack Health MonitorProvides the IP addresses for all the
switches in the stack, the type of switch
and whether they are responding to ping.
IntraStack TrafficGives information about the traffic
through the Matrix Module.
System InformationGives the name and location of the stack,
together with a contact name and the
length of time the stack has been running.
Stack ActivityDisplays as graphs monitoring information
of traffic on the ports in the stack.
Port OverviewProvides port performance, packet distri-
bution and spanning tree informa ti on fo r
all the ports in the stack.
DeviceEnables you to reboot the stack and pro-
vides information about the firmware in
the switches.
33
C H A P T E R 2Intel Device View
Functions Description
ConfigurationEnsures the stack’s configuration is safe
MonitoringProvides Hardware information about the
ToolsGives access to the Synchronization Man-
by saving it to the flash memory, by backing up to disk and by being able to restore
it again should it be lo st. If necessary, the
stack can be returned to the factory default
configuration.
separate switches in the stacks and the
access rights to the devices on the LAN.
age, the Switch Position Organizer and
Color Code Matr ix Ports function.
Right mouse button
commands for a switch in
a stack
When managing a stack o f switches, right cl ick a switch and Int el Device View offers:
Functions Description
IP and Name SetupDisplays the switch’s IP address and Sub-
net mask.
Device ActivityDisplays, in a graph fo rm a t, information
about the activity on the ports in the switch
selected.
Spanning TreeProvides statistics about the Spanning
Tree on the selected switch.
VLANDisplays monitoring information and the
status of the VLAN links.
DeviceRestarts the switch and provides informa-
tion about the firmware in the switch.
ConfigurationEnsures the switch’s configuration is safe
by saving it to the flash memory.
MonitoringDisplays, as a graph, the activi ty on all the
34
ports in the switch and RMON facilities.
C H A P T E R 2Intel Device View
Right mouse button
commands f or a port
Right click a single port and Intel Device View offers:
Functions Description
Port SetupDisplays the port status, the speed and
duplex settings, an d spa nni ng tr ee sett i ngs.
Add Port to VLANAdds the port to a VLAN.
Port DetailsDisplays comprehensive performance, dis-
tribution and spanning tree details.
Port ActivityDisplays, as a graph, the activity on the
port.
VLAN Port Monitor-
ing
Provides details about the MAC and IP
addresses on the VLANs.
RMON StatisticsProvides RMON statistics for the selected
port.
Color codingThe switch and ports are displayed in different colors:
Switch
Body
ColorMeans
GrayThe switch is ope rational (the soft-
ware is loaded and running) and it
can be contacted by Intel Device
View via the network.
Dark blueThat switch is selected, and various
device-specific parameters can be
changed using the right-mouse button.
35
C H A P T E R 2Intel Device View
ColorMeans
PortsDark greenPort enabled, but no plug connected.
Light greenPort enabled and plug connected.
BrownPort disabled by management or a
Dark blueThat port is selected, and various
PurplePort mirroring is enabled here.
Stack borderDark blueThe stack is selected, and various
hardware error.
port-specific parameters can be
changed using the right-mouse button.
stack-specific parameters can be
changed using the right-mouse button.
Everything;
switches,
ports and
stack border
Light blueIntel Device View has lost contact
with the devices (for example, the
switch or your PC is disconnected
from the LAN).
Explorer
Intel Device View ExplorerThe Explorer within Intel Device View displays management infor-
mation, for example VLANs on this switch and other switches.
If a switch is disabled or not operational, it is displayed with a red
cross through it.
General management information for the switch is accessed from the
Monitoring menu.
36
C H A P T E R 2Intel Device View
Diagnostics Window
Intel Device View
Diagnostics
Right mouse button
commands
The Diagnostics window helps you troubleshoot the switch/stack to
get it working properly in case of problems.
The Diagnostics window lists any problems detected by the switch/
stack and notes the level of the problem (f atal error, error or note) and
the port on which the error occurred. Messages are automatically
cleared from the list when the problem no longer exists
Right click a message and Intel Device View offers:
Functions Description
DetailsDisplays a diagnostic details window that
describes the problem and gi ves a possible
solution.
RefreshReloads and updates all the diagnostic
information.
ClearClears all the messages displayed.
Use Color CodingDisplays the messages in different colors,
depending on their severity.
37
C H A P T E R 2Intel Device View
Diagnostic details window
This window provides comprehensive details of the error.
Trap Window
Traps windowThe Traps window displays all traps generated by the switch.
Color codingTraps are generated by the switch for many events, both normal and
errors. Traps displayed in Intel Device View are color coded according to the severity of the trap.
Right mouse button
commands
Right click a message and Intel Device View offers:
Functions Description
RefreshReloads and updates all the infor mation i n
this window.
ClearClears all the messages displayed.
PropertiesEnables color coding to be switched on
and off and define maximum number of
messages displayed.
38
C H A P T E R 2Intel Device View
System Window
System windowThe System window contains a log o f all the major switch e vents with
date and times (for example, return to factory default, filter entry settings, modules inserted in slots).
Right mouse button
commands
Right click a message and Intel Device View offers:
Functions Description
RefreshReloads and updates all the infor mation i n
this window.
ClearClears all the messages displayed.
PausePauses the normal updating of informati on
in this window.
Errors Window
Errors windowThe Errors window is a log of all error messages generated by the
switch.
39
C H A P T E R 2Intel Device View
Right mouse button
commands
Right click a message and Intel Device View offers:
Functions Description
RefreshReloads and updates all the infor mation i n
this window.
ClearClears all the messages displayed.
PausePauses the normal updating of informati on
in this window.
40
Standard
3
In this chapterConfiguration is th e way we chan ge t he set up o f the swi tc h or stack.
Configuration
In this chapter you will find all the instructions you need to change
setups that affect the switch, or stack, and the ports.
Topic
Changing the Setup of the Switch or
Stack
Changing the Setup of the Port57
In chapter 4 you will find instructions to integrate VLANs into your
setup.
See Page
42
41
C H A P T E R 3Standard Configuration
Changing the Setup of the
Switch or Stack
Improving switch securityTo restrict the use of the switch or stack, you can:
•Change the administrator password for local management.
•Change the user password for local management.
•Limit access to Local Management via the Console port and/or
Telnet.
•Specify a time of “no input”, after which the connection with
Local Management is terminated.
•Change the password for moving files with TFTP.
•Specify use of TFT P.
•Restrict access to include only the stations named on the Authen-
tications list.
Using the mouseThere are two ways to access the Device Setup (for single switch-
es) or
•Double-click the switch or the stack border.
•Right-click the switch or the stack border.
Stack Setup window:
42
C H A P T E R 3Standard Configuration
System
Identifying the switchTo assist with switch identification and administra tion, you can
change certain switch details (name, location and contact person).
With a switch or stack in the Device View window:
1Select Device Setup or Stack Setup.
Click System.
2
3Change the details.
4Click OK.
These details are used by SNMP management centers.
43
C H A P T E R 3Standard Configuration
Internet Protocol
Changing IP detailsTo change the main IP address and network mask:
1Select Device Setup or Stack Setup.
2Click IP.
3Change the details.
4Click OK.
This is used to contact the switch via IP (TFTP, SNMP, TELNET etc.) protocols.
44
C H A P T E R 3Standard Configuration
Local Time
Setting the date and clock
to local time
To change the clock in the switch to your lo cal time:
1Select Device Setup or Stack Setup.
2Click Date/Time.
3Click Insert Current PC Date/Time to show the present
settings. If this is satisfactory, click
OK.
NoteThe clock displays the time at which it is accessed
and not the current time.
4If the time or the date is not satisfactory, click the date and/or
time opti ons and type the new time and date.
5Click OK.
Authentication
PurposeSNMP is a fully de fine d, i nt er ope ra ti ve standard that helps you man-
age both the switch and the network. To do this you can:
•Specify the names of the hosts to access the SNMP agent on the
switch (authentication) by defining the source IP and community
•Specify read-write or read-only for authenticated hosts
•Request a trap to be sent if authentication is violated
NoteIf no hosts are defined in the Authentication List, any host
can access the SNMP agent in the switch.
45
C H A P T E R 3Standard Configuration
Security
The authentications list defines the hosts that can carry out SNMP,
TFTP or Telnet management on the switch, have read-write or readonly rights and access to communities. You can:
•Add a new entry to the list
•Dele te a n entry
•Edit existing entries
Adding a device To add a host that i s al l owed to carry out management on the switch:
1Select Device Setup or Stack Setup.
2Click Authentications.
3Click Send trap when authentication violation.
4Click Add.
5In IP address, type the IP address of the device to manage
6Click Protocol and select one.
7Click Rights and specify the leve l of access to the switch
8For SNMP only, click Community and type the SNMP request
46
A message will be sent to the
Traps window if unauthorized
hosts try to carry out management on the switch.
the switch.
You can have a maximum of eight addresses in the list. The
address 0.0.0.0 indicates that all IP addresses are accepted.
name accepted by the SNMP agent.
If no community name is specified, all community names are
accepted by the SNMP agent.
C H A P T E R 3Standard Configuration
9Click OK.
Traps
PurposeA trap alerts you of events occurring in the switch. The traps list
shows where SNMP traps (generated by the switch) are sent. You
can:
•Add a new entry to the list
•Dele te a n entry
•Edit existing entries
Adding a trapNoteIf there are no entries in the Traps list, then no SNMP traps
are sent.
1Select Device Setup or Stack Setup.
2Click Traps.
3Click Add.
4Type the Destination IP address, or click This PC.
5Type the community (SNMP password).
6Click OK.
47
C H A P T E R 3Standard Configuration
Permanent Entries
PurposeEnables you to allocate a port to a device t hat does not send out dev ice
information. These devices are not removed from the switch’s address table, regardless of how long they are quiet. This is useful for
connections to printers and other similar devices. You can:
•Add a new entry to the list
•Dele te a n entry
•Edit existing entries
Adding a Permanent EntryTo add a device to the switch’s address table:
1Select Device Setup or Stack Setup.
2Click Permanent Entries.
3Click Add.
4Type the device’s MAC address.
5Click Port number and select one. A permanent entry is
6Click OK.
48
only made on the defined port.
C H A P T E R 3Standard Configuration
Link Aggregation
PurposeCombines two or four adjacent ports to increase the bandwidth be-
tween two switches or stacks. You can:
•Add a new entry to the list
•Dele te a n entry
Adding an Aggregate LinkTo set up and add an aggregate link:
1Select Device Setup or Stack Setup.
2Click Link Aggregation.
3Click Add.
4For a stack, click Switch and select one from the list.
5Click Aggregation width: and select 2 Ports or 4
Ports
.
6Click Anchor Port and select a port.
7Type a unique name for the link.
8Click OK. For further configuration of a link, for example in a
VLAN, use the Anchor Port.
49
C H A P T E R 3Standard Configuration
Port Mirroring
PurposeProvides a facility to debug or monitor traffic on a specific port, by
duplicating th e traffic an d sending it to a speci fied port. Only one pair
of ports can be mirrored per switch. Within Port Mirroring, you can:
•Add a new entry to the list
•Dele te a n entry
•Edit existing entries
Adding Port MirroringTo add a mirrored port to a switch:
NoteIf Port Mirroring is enabled, the source port will be in store-
and-forward mode. Therefor e, Runt s, C RCs, et c. wil l not be
forwarded or mirrored.
1Select Device Setup or Stack Setup.
2Click Port Mirroring.
3Click Add.
4For a stack, click Switch and select one.
5Click Reflect from and select the port that you want.
6Click Reflect to and select the port to where the traffic can
7Click OK.
50
be debugged/monitored.
C H A P T E R 3Standard Configuration
Local Management
Changing password
details
The administrator has read-write access at all levels. The user can
read the monitoring screens, but can not chang e the configurat ion, update software or r eset th e station . To p revent unauthor ized person nel
changing configurations:
1Select Device Setup or Stack Setup.
2Click Local Management.
3You can change the passwords for the Administrator and User.
4Type the old password.
5Type the new password.
6Retype the new password (in Retype new).
7Click OK.
Changing timeout detailsWhen there has been no input during this period, the connecti on with
Local Management is terminated. To change the timeout interval:
1Select Configuration>Device Setup.
2Click Local Management.
3Type the new time.
4Click OK.
51
C H A P T E R 3Standard Configuration
TFTP
Changing password
details
Changing the MAC
address ageing time
To give added security, you can limit the number of staff authorized
to transfer TFTP file s by changing the TFTP password. To change the
password:
1Select Device Setup or Stack Setup.
2Click TFTP.
3Type the old password.
4Type the new password.
5Retype the new password (in Retype new).
6Select OK.
Switching
To change the time a MAC address is kept in the filter before being
purged:
1Select Device Setup or Stack Setup.
Click Switching.
2
3Click MAC Address Ageing.
4Type the required number of minutes.
5Click OK.
52
C H A P T E R 3Standard Configuration
Changing the flow control
Changing the default
forwar di ng mod e
Flow control prevents the loss of frames during busy periods. Note
that the individual port settings overrule the default setting. To
change the default flow mechanism on all ports:
1Select Device Setup or Stack Setup.
2Click Switching.
3Click Default Flow Control.
4Click Enabled or Disabled.
5Click OK.
To change the forwarding mode to be used on all ports:
1Select Device Setup or Stack Setup.
2Click Switching.
3Click Default Switch Forwarding Mode.
4Click the default forwarding mode you want.
5Click OK.
Enable forward learn
packets mode
When this mode is enabled, all packets are forwarded. However, if
there is not enough memory in the switch, due to heavy load, the
packet is discarded . When t his mode is disa bled, on ly “IPX Get server” request packets are forwarded. To enable or disable this mode:
1Select Device Setup or Stack Setup.
2Click Switching.
3Check the box to enable this mode.
4Click OK.
53
C H A P T E R 3Standard Configuration
Adaptive Forwarding Mode
PurposeYou can:
•Change the Sample Time
•Define the minimum and maximum errors acceptable before
changing the forwarding mode
NoteWhile CRC errors and runts are the most like ly parameters
to cause the switching mode to ch ange, they are not the onl y
ones.
Changing the time to
measure errors
The sample time should be the shortest time needed to detect errors.
If the sample time is too great, there may be too many errors before
the forwarding mode changes. To chang e the t ime the switch ret ai ns
error counters:
1Select Device Setup or Stack Setup.
2Click Switching.
3Click Advanced.
4Click Sample Time.
5Type the required number of seconds.
6Click OK.
Changing number of
errors before adaptive
forwarding mode operates
54
Adaptive forwardin g changes the f orwarding mode d epending on th e
upper and lower limits of specifi c error types. To change the number
of upper and lower limits:
1Select Device Setup or Stack Setup.
2Click Switching.
3Click Advanced.
C H A P T E R 3Standard Configuration
4Click the required parameter.
5Type the percentage of errors or runts.
6Click OK.
Spanning Tree
PurposeYou can change the:
•Priority given to the switch
•Maximum length of time information is retained by the switch
•Time between tra nsmitted Configura tion BPDUs
•Time the switch spends in the Listening and Learning states
Warning when using
VLANs
It is important to be aware of problems that may arise when using
Spanning Tree and VLANs. The Spanning Tree can use alternative
paths (such as different ports) to get messages to their destination.
VLAN
B
A
SlotBSlotA
123876549101112
SlotBSlotA
123876549101112
A
B
VLAN
LEDs Green Orange
Off 10Mbps Half duplex
Solid 100Mbps Full duplex
LEDs Green Orange
Solid Link Disable
Blink Activity Collision
LEDs Green Orange
Off 10Mbps Half duplex
Solid 100Mbps Full duplex
LEDs Green Orange
Solid Link Disable
Blink Activity Collision
®
Intel Express
520TSwitch
PortStatus
Power
Status
Temperature
Reset
RPS
Console
9600-8-N-1
Switch 1
123876549101112
W
Y
®
Intel Express
520TSwitch
PortStatus
Power
Status
Temperature
Reset
RPS
Console
9600-8-N-1
Switch 2
123876549101112
STP
SlotBSlotA
LEDs Green Orange
Off 10Mbps Half duplex
®
Solid 100Mbps Full duplex
Intel Express
520TSwitch
PortStatus
Power
Status
LEDs Green Orange
Temperature
Solid Link Disable
Reset
Blink Activity Collision
RPS
Console
9600-8-N-1
X
Z
SlotBSlotA
LEDs Green Orange
Off 10Mbps Half duplex
®
Solid 100Mbps Full duplex
Intel Express
520TSwitch
PortStatus
Power
Status
LEDs Green Orange
Temperature
Solid Link Disable
Reset
Blink Activity Collision
RPS
Console
9600-8-N-1
1737
The diagram above, shows two switches. On th e l eft, we see the two
switches connected and the por t s ar e grou ped i n t wo VLANs: A and
B. On the right, we have enabled ST P; ST P blocks t he pat h bet ween
X and Z (to avoid looping) and, theref ore, dest roys t he VLAN setup
(because VLAN B needs these ports to receive messages).
Why change these from
their defaults?
The switch is deli vered with Spanning Tr ee default values set to those
recommended by the IEEE 8 02.1d standard. These values are conservative worst-case estimates for LANs consisting of a large number of
switches. Therefore, changing these default values may improve the
performance of your netw ork.
55
C H A P T E R 3Standard Configuration
Changing the spanning
tree priority
The higher the value, the lower the chance of the switch being used
as the root bridge. To change the priority value:
1Select Device Setup or Stack Setup.
2Click Spanning Tree.
3Click Priority.
Changing the message
age expiry time
Changing the hello expiry
time
4Type the required value.
5Click OK.
To change the maximu m time between pro tocol informatio n being received and discarded:
1Select Device Setup or Stack Setup.
2Click Spanning Tree.
3Click Message Age Timer Expiry.
4Type the required number of seconds.
5Click OK.
To change the time between transmissions of configuration BPDUs
from a switch that is, or a ttempting to become, the root:
1Select Device Setup or Stack Setup.
2Click Spanning Tree.
3Click Hello Timer Expiry.
4Type the required number of seconds.
56
C H A P T E R 3Standard Configuration
5Click OK.
Changing the forward
delay expiry time
Changing the state of the
ports
To change the time between port states while the bridge attempts to
become the root:
1Select Device Setup or Stack Setup.
2Click Spanning Tree.
3Click Forward Delay Timer Expiry.
4Type the required number of seconds.
5Click OK.
To specify that all ports are using Spanning Tree Protocol:
1Select Device Setup or Stack Setup.
2Click Spanning Tree.
3Click Enable All Ports.
The ports are able to resolve problematic network loops using
STP.
4Click OK.
Changing the Setup of the
Port
PurposeYou can configure the port to op erate in d ifferent ways, a ccording to
your network’s requirements:
•Change the port state
•S elect the auto-ne gotiation mode
•Change each port to half or full duplex
(If auto-negotiation is not enabled)
•Specify the speed of the port
(If auto-negotiation is not enabled)
•Change the forwarding mode of the port
•Change the flow control setting of the port
57
C H A P T E R 3Standard Configuration
•Specify the spanning tree
Using the mouseThere are two ways to access the Port Setup window:
•Double-click the port
•Right-click on the port, and click Port Setup
General Changes
Renaming a portTo give a port a new name, for example, i ts use or the user(s) connec t-
ed:
1Click the port you want to rename.
2Select Port Setup.
3Click General.
4In Description, type the new name.
5Click OK.
Location for a portTo specify the location (for example, an office number or depart-
ment) of the device attached to a port:
1Click the port you want to give a home to.
2Select Port Setup.
3Click General.
4In Location, type where the device is.
5Click OK.
58
C H A P T E R 3Standard Configuration
Port Mode
Disabling the portIf you disable the port, the devices attached to it cannot use the
switch. The MAC address of those devices are removed from the
switch’s address table. If those addresses are defined as permanent
entries, they are not purged but are unable to use the switch. To disable the port:
1Click the port you want to disable.
2Select Port Setup.
3Click Port Mode.
4Click Enable Port.
If there is a check mark in the box, the port is operational. If
the box is empty, the port is disabled.
5Click OK.
Disabling auto-negotiationTo disable auto-negotiation, and reset the speed to the values speci-
fied in
1Click the port you want to disable auto-negotiation.
2Select Port Setup.
3Click Port Mode.
4Click EnableAuto-negotiation.
Speed:
If there is a check mark in the box, the port automatically
detects the line-speed and duplex setting. If the box is empty,
auto-negotiation is disabled and the port uses the values specified in
Duplex and Speed.
59
C H A P T E R 3Standard Configuration
5Click OK.
Changing duplex modeTo change the port’s duplex mode (when auto-negotiation is dis-
abled):
1Click the port you want to change.
2Select Port Setup.
3Click Port Mode.
4Click Half Duplex or Full Duplex.
Half allows either transmission or receipt of the data and
Full allows both transmission and receipt of the data.
5Click OK.
Changing the port speedTo change the speed a port accep ts data (when auto-negotiat ion is dis-
abled):
Changing the forwarding
mode on a port
1Click the port you want to change.
2Select Port Setup.
3Click Port Mode.
4Click Speed 10 or Speed 100.
10 limits data entering to 10Mbps and 100 allows data speeds
up to 100Mbps.
5Click OK.
To change the forwarding mode to be used on a port:
1Click the port you want to change.
2Select Port Setup.
3Click Port Mode.
4In Switch Forwarding Mode, click the forwarding mode
you want.
Default uses the same forwarding mode as specified in
Device Setup.
5
60
Click OK.
C H A P T E R 3Standard Configuration
Changing the flow control
on a port
Flow control prevents the loss of frames during busy periods. To
change the flow mechanism on a port:
NoteThis feature is over-ridden by disabling the flow control set-
1Click the port you want to change.
2Select Port Setup.
3Click Port Mode.
4In Flow Control, click the flow control you want.
Default uses the same flow control as specified in Device
Setup.
Click OK.
5
Port Specific Spanning Tree
PurposeYou can:
ting in
Device Setup>Switching.
Changing the state of a
port
•View the Spanning Tree setups for the port
•Specify whether STP (Spanning Tree Protocol) is enabled on the
port
•Define which ports are going to be used most frequently
To specify that a port is using STP:
1Click the port you want to change.
2Select Port Setup.
61
C H A P T E R 3Standard Configuration
3Click Spanning Tree.
4Click Enable spanning tree on this port.
If there is a check mark in the box, the port is used in STP. If
the box is empty, the port is not used in STP.
Changing the cost of the
path
Changing priority of the
port in the spanning tree
5Click OK.
The higher the cost, the lower the chance of this port being used for
forwarding traffic, if there is an alternative route. When possi ble, give
a port a low cost if it is connected to a faster network segment. To
change the overall cost of the path between a port and the segment:
1Click the port you want to change.
2Select Port Setup.
3Click Spanning Tree.
4Select the Port status box.
5In Path cost, type the required value.
6Click OK.
The higher the value, the lower the cha nce of th is por t being used as
the designated or root port. To change the priority value:
1Click the port you want to change.
2Select Port Setup.
3Click Spanning Tree.
4Select the Port status box.
62
C H A P T E R 3Standard Configuration
5In Priority, type the required value.
If there are two ports with the same value, the port with the
lowest port number is chosen.
6Click OK.
63
Advanced
4
In this chapterIn this chapter you will le arn how to use Advanced Configura tion ef-
Configuration
fectively. This chapter covers the Virtual LAN (VLAN) features.
You can create logical network groups (VLANs) by segmenting the
switch; for example, according to the su bnettin g scheme wit hin your
network. Each VLAN is an isolated group and the switch only forwards traffic between members of the same group. Communication
between groups can be implemented using routers.
NoteThis switch is able to forward tagged frame s from devices
supporting IEEE 802.1p/Q. These frames are only forwarded to ports that are in the same VLAN.
However, IP policies cannot be used for devices using tagged VLANs
and IP learning is not possible.
PurposeYou can use VLANs to:
VLANs (Virtual LANs)
•Create up to 128 separate user groups
•Limit broadcast and multicast traffic
•Increase security by limiting communication between groups
65
C H A P T E R 4Advanced Configuration
•Allocate network resources (such as servers) to groups
For a more comprehensive explanation of the VLAN concept, refer
to the online help.
Warning when using STPIt is important to be aware of problems that may arise when using
Spanning Tree and VLANs. The Spanning Tree can use alternative
paths (such as different ports) to get messages to their destination.
VLANs specify which ports can receive messages (see “Spanning
Tree”, p. 55).
WarningWhen using the Spanning Tree facility, use only one
VLAN. If you use two or more VLANs, unexpected
changes in your network topology may occur.
Policy-based VLANsThe swi tch or stack uses “Policy-based VLANs”. This means that the
devices attached to t he swit ch/s t ack can be grouped by any combi nation of MAC address, IP address, IP net and port number; therefore,
devices can belong to one or more VLANs.
Policy hierarchyTo avoid conflicts between two VLAN s, a st ric t priority of the poli-
cies is used:
1. MAC address
2. IP address and IP net
3. Port
WarningThis means that a station learned by a MAC rule is not
learned by an IP or Port rule, and a station learned by an
IP rule is not learned by a Port rule. Only stations that
are not learned by MAC or IP rules are learned by a
Port rule.
NoteIP policies can be used only when IP learning is enabled on
the respective ports.
66
C H A P T E R 4Advanced Configuration
Adding a VLAN
The task of adding VLANs is simplified by using the VLAN Wizard.
VLANs are not switch specific when managing a stack. Therefore,
right-click the stack border to access VLAN Setup. To add a VLAN:
1Select VLAN Setup.
2Click Add, and follow the instructions in the Wizard windows.
PolicyInformation required
Switch PortsPort numbers
IP SubnetIP Subnet and Mask
Mixed policyIP Subnet and Mask,
Deleting a VLANTo delete a VLAN:
1Select VLAN Setup.
2Click the name of the VLAN you want to delete. (Note: you
cannot delete a VLAN if it is the
ment VLAN]
and then click Use this VLAN for SNMP
ties
management
3Click Delete.
Port numbers,
MAC address and/or
IP address
[Designated Manage-
. To do this, click another VLAN, click Proper-
; you can now delete th e first VLAN.)
67
C H A P T E R 4Advanced Configuration
Changing VLAN mode
To change the mode of operation of a VLAN:
1Select VLAN Setup.
2Click Advanced. The VLAN mode is shown.
3Click the VLAN mode to see the full range of choices.
VLAN ModeDescription
Stand-aloneFor single switches: there is no exchange of
information with VLANs on other swi tches;
each switch is its own domain
(STDALONE).
For switches in a stack: there is an ex change
of information using VLANs between the
switches in the stack; these switches are in
their own domain (STDALONE).
DistributedA domain is a collection of switches and
can contain up to 128 VLANs. If you select
distributed, each switch will be able to communicate with all the others in this dom ai n.
4Click the new mode and make sure the rest of the details are
correct.
5Click OK.
Your switch may turn blue (for a few seconds) while the network stability return s; this is normal.
68
C H A P T E R 4Advanced Configuration
Ports with IP learning
IP learning must be enabled when using IP policies. (IP learning is
enabled on all ports by defaul t.) If you want to change the settings for
individual ports, for examp le if you are usi ng pro to col s oth er tha t IP
protocols and don’t want these stations to be learned using IP rules,
you should:
1Select VLAN Setup.
2Click Advanced.
3Click IP Traffic to specify which ports support IP learning.
Warning when using
pruning
4Click OK.
IGMP pruning
It is important to be aware of problems that may arise when using
IGMP pruning and IP Multicast addresses.
WarningWhen using the IGMP pruning, IP multicast packets not
based on IGMP are discarded.
IGMP pruning can only be used in VLANs that have an IP link. Enabling IGMP pruning stops Layer 2 forwar di ng o f IP mul t ica st p ackets in all other VLANs without IP links.
Only enable IGMP pruning (on this device) when it is connected between the device receiving the packe ts and an IP multicast routing device. Or, disable IGMP pr uning (on t his device) when it is conn ected
between the device t ransmi t ting t he pack ets an d a n IP mu lti cast rou ting device.
69
C H A P T E R 4Advanced Configuration
Enabling IGMP pruning
IGMP pruning implements a system where only the necessary
amount of IP multicast packets are bridged . To enable IGMP pr uning:
1Select VLAN Setup.
2Click Advanced>IP Routing>IGMP.
3Check Enabled.
4In Pruning timeout, type the new value.
5Click OK.
70
5
In this chapterThis chapter covers the following topics.
Managing the Switch
TopicSee Page
Management using Intel Device View72
Monitoring the Switch’s Performance73
Monitor ing the Stack’s Performance78
Monitoring VLANs83
Monitoring the Port’s Performance86
Tools for the Switch90
Tools for the Stack95
•View traps, logs, traces, and reports generated by the switch.
•Monitor port activity.
•Monitor port faults.
•M on itor switch activity.
•Monitor VLANs.
Information about the Switch
Identifying the switchTo see the name of the switch, the IP address, the administrator’s
name and how long the switch has been running:
1Select Device Information.
2To update the information, click Refresh.
72
C H A P T E R 5Managing the Switch
Hardware details
Monitoring the tota l packe t
activity
To see the MAC address, hardware version and memory size:
1Click Monitoring>Hardware Information.
2To update the information, click Refresh.
Monitoring the Switch’s Performance
To view the total activity of the packets on all the ports:
1Select Device Activity>Total Packets.
Each column represents a port and its activity level.
2To see the exact value, hold the mouse pointer over a port.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
73
C H A P T E R 5Managing the Switch
Monitoring the total
activity of transmitted
packets
Monitoring the total
activity of received
packets
To view the total activity of the packets being transmitted on all the
ports:
1Select Device Activity>Tx Packets.
Each column represe nts the activity level on t hat p ort.
2To see the exact value, hold the mouse pointer over a port.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
To view the total activity of the packets being received on all the
ports:
1Select Device Activity>Rx Packets.
Each column represe nts the activity level on t hat p ort.
2To see the exact value, hold the mouse pointer over a port.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
Monitoring the total
number of errors
To view the total error activity of the packets on all the ports:
1Select Device Activity>Errors.
Each column represe nts the activity level on t hat p ort.
2To see the exact value, hold the mouse pointer over a port.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
74
C H A P T E R 5Managing the Switch
Monitoring the spanning
tree statistics
Overview of all the portsTo view the setups of all the ports on the switch:
To view the spanning tree statistics for the whole switch, select
Spanning Tree Statistics.
1Select Port Overview.
2Double-click a port to get the specific details for that port: port
performance, faults, packet distribution, link aggregation and
spanning tree information.
75
C H A P T E R 5Managing the Switch
Stations on the switch
To view the IP addresses of the devices that have accessed management on the switch:
1Click Monitoring>Access Overview.
2To change the order of the information, click the appropriate
title bar.
Monitoring using RMON
PurposeThe switch contains several RMON functions. These function pro-
vide a tool for collecting information about network traffic. The following information, History, Alarm and Event Log are switch
specific. Right-click the switch to access the relevant RMON facility.
RMON HistoryTo monitor traffic on a subnet over a period of time:
1Right-click a switch and select Monitoring>RMON His-
tory.
2To open a graph showing the statistics, select a history and
press
This opens a window listing all history collections.
View.
76
C H A P T E R 5Managing the Switch
RMON Alarms
Alarm is a useful RMON feature; it enables you to set your own
thresholds for when the network activity requires some attention.
1Right-click a switch and select Monitoring>RMON
Alarms>Configure. The Alarm Table window opens,
which lists all alarms.
2Click Add to add an alarm to the list.
After defining the alarm, a trap is sent every time the threshold
is exceeded.
RMON Events Event is a useful RMON feature; it enables you to set your own
events, defined by type; Log, Trap or Log and Trap:
1Right-click a switch and select Monitoring> RMON
Alarms>Events
. The Events Table window opens, whic h
lists all events defined.
2Click Add to add an event to the list.
NoteEvents can be created automatically through the alarm
configurations.
Online HelpFor more information about the use of the RMON facilities, please re-
fer to the online
Help.
77
C H A P T E R 5Managing the Switch
Monitoring the Stack’s Performance
Monitoring the health of
the stack
The Stack Health Moni tor provides a n overal l stat us for t he switche s
in the stack. To view the health of the stack: Right-click the stack border and select
Stack Health Monitor.
If the condition of any of the switches alters, the changes are displayed on screen.
78
C H A P T E R 5Managing the Switch
Monitoring IntraStack
activity
To view the total activity of the packets between the switches in the
stack, or across the Matrix Module:
1Right-click the stack border and select IntraStack Traf-
fic
Each column represents a Matrix Module port and its activity
level.
2To see the exact value, hold the mouse pointer over a port.
79
C H A P T E R 5Managing the Switch
Monitoring the tota l packe t
activity per port
To view the total activity of the packets on all the ports:
1Right-click the stack border and select Stack Activ-
ity>Total Packets per Port
.
Each column represents a port and its activity level.
Monitoring the tota l packe t
activity of the switches
2To see the exact value, hold the mouse pointer over a port.
To view the total activity of the packets on all the ports:
1Right-click the stack border and select Stack Activ-
ity>Total Packets
.
2To see the exact value, hold the mouse pointer over a switch.
80
Each column represe nts a switch and its activity level.
C H A P T E R 5Managing the Switch
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
Monitoring the total
activity of transmitted
packets
Monitoring the total
activity of received
packets
To view the total activity of the packets being transmitted on all the
switches:
1Right-click the stack border and select Stack Activ-
ity>Tx Packets
.
Each column represe nts the activity level on a switch.
2Hold the cursor on a column to see the exact value.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
To view the total activity of the packets being received on all the
switches:
1Right-click the stack border and select Stack Activ-
ity>Rx Packets
.
Each column represents the activity level on t hat switch.
2Hold the cursor on a column to see the exact value.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
Monitoring the total
number of errors
To view the total error activity of the packets on all the switches:
1Right-click the stack border and select Stack Activ-
ity>Errors
.
Each column represents the activity level on t hat switch.
2Hold the cursor on a column to see the exact value.
3Click View and change the presentation style: 3D- to 2D-
Graph, with or without a peak value indicator and vertical to
horizontal bars.
81
C H A P T E R 5Managing the Switch
Overview of all the ports
Monitoring the spanning
tree statistics
To view the setups of all the ports in the stack:
1Right-click the stack border and select Port Overview.
2Double-click a port to get the specific details for that port: port
performance, faults, distribution and spanning tree information.
To view the spanning tree statistics for the whole switch, right-click
a specific switch and select
Spanning Tree.
82
C H A P T E R 5Managing the Switch
Stations on the switch
To view the IP addresses of the devices on the switch:
1Select Monitoring>Access Overview.
2To change the order of the information, click the appropriate
title bar.
Monitoring VLANs
General informationThe informa tion provide d in this section is switch spe cific. To get in-
formation about a switch, including switches in a stack, right-click
that switch.
83
C H A P T E R 5Managing the Switch
Overview of the VLANs on
a switch
To view the VLANs on the switc h:
1Select VLAN>Monitoring.
This shows a full list of VL ANs a ct iv e on the switch or in the
domain (if distributed VLAN or stand-alone for a stack). To
view this window from the Explorer, right-click the VLAN
name and select
2Click the nam e of the VLAN, then click Details to view
Monitor.
details of that VLAN:
Click either of the tabs to view more deta ils:
Tab Name:
Shows the
VLAN’s...
Station TableMAC addresses,
Ports and
IP addresses
Port TablePort number and
Port name
Double-click a row
to show...
all VLANs in which
this address is contained
the MAC and IP
address of all devices
on the port in th is
VLAN
IP addresses will be present on ly if the station is l ear ned by t his
switch and has sent an ARP packet.
84
C H A P T E R 5Managing the Switch
Information about the
domain
Information about VLAN
configuration
To view the VLAN mode and Domain name:
1Select VLAN>Status.
2To change the information, see “Changing VLAN mode” in
“VLANs (Virtual LANs)”, p. 68.
To see if another user is configuring the VLANs, view the version
number of the VLAN configurat ion or the time this confi guration has
been running:
1Select VLAN>Status.
2Click Configuration Information
The bottom 2 lines in this window are not displayed when the
status is idle, for example nobody is editing the VLAN.
85
C H A P T E R 5Managing the Switch
Information about the
server
VLAN links to other
switches
This provides status information about the server:
NoteThis information is only available from switches in a stack
or from switches in a distributed VLAN.
1Select VLAN>Status.
2Click Server Information
To view the links between switches in a distributed VLAN:
NoteThis information is only available from switches in a stack
or from switches in a distributed VLAN.
1Select VLAN>Switch VLAN Links.
This shows the IP address and MAC address of the other
switches connected to each port in this distributed VLAN.
2Click the appropriate title bar to change the order of the infor-
mation.
Monitoring the Port’s Performance
Using the LEDsUsing the Device View of the switch, the different colored LEDs on
the ports indicate the different states of activity. Select
play Legend
for further information on LED states.
Help>Dis-
86
C H A P T E R 5Managing the Switch
Monitoring the
performance of a port
To monitor the performance of a specific port:
1Right - click the port.
2Select Port Details>Performance.
This table shows the total number of frame s and bytes, utiliza tion of the ports and the number of packets transmitted and
received.
Monitoring the faults on a
port
3To change the display from numeri cal t o gr ap hical, click one or
more of the numbers and select
Tools>Graph.
4Select Options>Reset Counters to set all these counters
to zero.
To monitor the fa ults on a specific port:
1Right - click the port.
2Select Port Details>Faults.
This table shows the total number errors, discards and observations transmitted and received.
3To change the display from numeri cal t o gr ap hical, click one or
more of the numbers and select
Tools>Graph.
4Select Options>Reset Counters to set all these counters
to zero.
87
C H A P T E R 5Managing the Switch
Monitoring the distribution
on a port
Monitoring the spanning
tree statistics on a port
Monitoring the received
packets on a port
To monitor the distribution percentages of unicast, mu lticast and
broadcast frames on a specific port:
1Right - click the port.
2Select Port Details>Distribution.
To monitor the spanning tree statistics on a specific port:
1Right - click the port.
2Select Port Details>Spanning Tree.
To monitor the received packets on a specific port:
1Right - click the port.
2Select Port Activity>RX Packets:
3To change the graph, click 3D.
4To freeze the graph, click View>Stop Collection.
Monitoring the packets
transmitted from a port
To monitor the transmitted packets on a specific port:
1Right - click the port.
2Select Port Activity>TX Packets.
3To change the graph, click 3D.
4To freeze the graph, click View>Stop Collection.
88
C H A P T E R 5Managing the Switch
Monitoring the VLANs on
a port
To view the VLANs on the port:
1Right-click and select VLAN Port Monitoring.
2Click either of the tabs to view details of that port:
Tab Name
Shows the
VLAN’s...
Double-click a row
to show the...
VLAN Tablei n wh ic h th is por t is
contained
MAC addresses
learned on this port in
that specific VLAN
MAC TableMAC addresses and
IP addresses
other VLANs in
which this address is
contained
RMON Interface statisticsTo access a range of subnet management statistics:
1Right-click a port and select RMON Statistics.
2This window gives more detailed information displayed as
graphs.
89
C H A P T E R 5Managing the Switch
Tools for the Switch
Tools availableThe switch has various tools to help with management:
Use...To...
PingEnsure a device is connected to the net-
work.
Report ManagerTransfer files from a remote switch to your
local disk or file server.
TelnetAccess the switch from any workstation
on the network using Telnet.
Recovery ManagerRegain control of your switch.
DNS IP Conversion Converts DNS names to IP addresses.
Ping
Pinging a deviceUse Ping to ensure a device is attached to the network. If the device
is on a remote network, you may need to adjust the timeout in order
to receive the response.
1Select Tools>Ping.
2Double-click IP Address, and type the cor rect I P addr ess for
90
the device you want to ping.
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