Page 1
Part No. 206375-A
June 1999
4401 Great America Parkway
Santa Clara, CA 95054
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
*206375-A*
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Copyright © 1999 Nortel Networks.
All right s reserved . Printed in th e U SA . June 1999.
The information in this document is sub ject to change wi thout notice. The statement s, configurations, technical data,
and recommendations in this document are believed to be accurate and reliable, but are presented without e xpress or
implied warranty. Users must take full responsibi lity for th eir applications of any products specif ied in this document.
The information in this document is pro prietary to Nortel Networks NA Inc.
Trademarks
NORTEL NETWORKS is a trademar k of Norte l Networks Corporation.
Bay Networks is a registered trademark and BayStack and the Nortel Net w orks logo are trademarks of Nor tel
Networks NA Inc.
Microsoft is a registered trademark of Microsoft Corporation.
All other trademarks and registered trademarks are the property of their respecti ve owners.
Notice
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This eq uipment genera tes, uses, and can radiate radio
frequenc y energy. If it is not install ed and used in accor dance with the instruction manual, it may cause harmful
interf erence to radi o com munications. Operation of this equi pm ent in a resid ential area is likely to cause harmful
interf erence, in which case users will be required to take whatever me asures may be necessary to correct the
interference at their own expense.
EN 55 022 Statement
This is to certify that the Nortel Networks BayStack 70 Series 10/100 Ethernet Switches are shielded against the
generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Art icle 4a.
Conformit y is declared by the application of EN 55 022 Class A (CISPR 22).
Warning: This is a Class A product. In a domestic environment, this product may ca use radio interference, in which
case, the user may be required to take appropriate measures.
EC Declaration of Conformity
These products conform to the provisions of Council Directive 89/ 336/EEC and 73/23/EEC.
The Declara tion of Conformity is available on the No rtel Networks World Wide Web site at
http://libra2.corpwest.baynetworks.com/cgi-bin/ndCGI.ex e/DocV iew/.
Voluntary Control Council for Interference (VCCI) Statement
ii
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Voluntary Control Council for Interference (VCCI) Statement
This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information
Technology Equipment (VCCI). If this equipment is used in a domes tic env ironment, radio disturbance may arise.
When such trouble occurs, the user may be required to take corrective actions.
Canadian Department of Communications Radio Interference Regulations
This digital appa ra tus (Bay Sta ck 70 Ser ies 10/ 10 0 Ethe rnet Sw itc hes ) do not ex ce ed th e Clas s A limits for radio- noi se
emissions from digital apparatus as se t out in the Radio Interference Regulations of the Canadian Department of
Communications.
Règlement sur le brouillage radioélectrique du ministère des Communications
Cet appareil numérique (BayStack 70 Series 10/100 Ethernet Switches) respecte les limites de bruits radioélectriques
visant les ap par ei ls num ériq ues de cl asse A prescr it es dans le Règ le ment sur le br oui llag e ra dio élect r ique du m inis tè re
des Communications du Canada.
Electromagnetic Interference (EMI) Statement
Wichtige Sicherheitshinweis e
1. Bitte lesen Sie diese Hinwe ise sorgfaltig durch.
2. Heben Sie diese Anleitung fur den spateren Gebrauch auf.
3. Vor jedem Reinigen i st das Gerat v om S tromnetz zu trennen. Verwenden Sie keine Flussigoder Aerosolreiniger.
Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung.
4. Um eine Beschadigung des Gera tes zu vermei den sollten Sie nur Zubehorteile verwenden, die vom Hersteller
zugelassen sind.
5. Da s G e rat ist vor Feu ch t ig keit zu schutzen.
6. Bei der Aufstellung des Ger ates ist auf sicheren Stand zu achten. Ein Kippen oder Fallen konnte Verl etzungen
hervor rufen. Ver w enden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des Herstellers.
7. Die Beluftungsoffnungen dienen der Luftzirkulation die das Gerat vor Uberhitzung schutzt. Sorgen Sie dafur,
daB diese Of fnungen nicht abgedeckt werden.
8. Beachten Sie beim AnschluB an das Stromnetz die AnschluBwerte.
9. Die Netzanschlusteckdose muB aus Grunden der elektrischen Sicherheit einen Schut zleiterkontakt haben .
10. Verlegen Sie die NetzanschluBleit ung so, da B niemand da ruber fallen kann. Es sollte auch nichts auf der Leitung
abgestellt werden.
11. Alle Hinweise und Warnungen, die sich am Geraten befinden sind zu beachten.
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12. Wird das Gerat uber einen langeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetztrennen. Somit wird im
Falle einer Uberspannung eine Beschadigung vermieden.
13. Durch die Luftun gso f fnun gen dur fe n niema ls Ge gen stand e od er Flu ssigk ei ten i n d as Gera t gelang en. Di es ko nnt e
einen Brand b zw. elektrische n Schlag auslosen.
14. Offnen sie niemals das Gerat. Das Gerat darf aus Grunden der elektrischen Sicherheit nur von authorisiertem
Servicep ersonal geoffnet werden.
15. Wenn folgende Situationen auftreten ist das Gerat v om Stromnetz zu tr ennen und von ei ner qualifizierten
Servicestelle zu uberprufen:
a Netzkabel oder Netzstecker sind beschadigt.
b Flussigkeit ist in das Ge rat eingedrungen.
c Das Gerat war Feuchtigkeit ausgesetzt.
d Wenn das Gerat nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit Hilfedieser Anleitung
keine Verbesserung erzielen.
e Das Gerat ist gefallen und/oder da s G ehause ist be schadigt.
f Wenn das Gerat deutliche Anzeichen eines Defektes aufweist.
16. Bei Reparaturen durfen nur O rginalersatzteile bzw. den Orginalteilen entsprechende Teile verwendet werden.
Der Einsatz von ungeeigneten Ersatztei len kann eine weitere Beschadigun g hervorrufen.
17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner. Somit stell en Sie
die Betriebssicherheit des Gerates sicher.
18. Zum NetzanschluB dieses Ge rates ist eine geprufte Leitung zu verwen den. Fur einen Nennstrom bis 6A und
einem Gerategewicht groBer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm 2 einzuse tzen. Der
arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 betragt 70dB(A) oder weniger.
Restricted Rights Legend
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the Commercial Computer Sof tware-Res tricted Rights clause at FAR 52.22 7-19.
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.
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Contents
Preface
Purpose ............................................................................................................................ xi
Audience ...........................................................................................................................xii
Hard-Copy Technical Manuals .......................................... ....... ....... ..... ....... .. .......... ....... ...xii
How to Get Help ..............................................................................................................xiii
Chapter 1
Introduction
BayStack 70 Series 10/100 Ethe r net Switch Overview ..................................................1-1
Physical Description .......................................................................................................1-2
Fr o n t Panel ............. ......... .......... ................... ......... .......... ......... ................... .......... ...1-2
RJ-45 10BASE-T /1 0 0 BASE-TX Ethernet Po rts ..... .......... ......... .......... ...............1-4
MDI/MDI-X Button .... .......... ................... ......... .......... ......... ................... .......... ...1-4
LEDs ..................................................................................................................1-5
Rear Panel ...............................................................................................................1-6
Rear Panel of the BayStack 70-8T 10/100 Ethernet Switch and
BayStack 70-16T 10/100 Ethernet Switch ....................................................... 1-6
Rear Panel of the BayStack 70-24T 10/100 Ethernet Switch ............................1-7
DC Power Adapter ............................. .......... ......... .......... ................... ......... .......... ...1-8
Cable Holde r ............................. ......... .......... ................... ......... .......... ......... .............1-8
Cooling Fans ............................................................................................................1-9
Features ..........................................................................................................................1-9
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Chapter 2
Network Configuration
Benefits of Using Switching Technology ................................................ ....... .......... .. ......2-1
Types of Ethernet Switches ......................................................................................2-2
Desktop Switchi n g ......................... ......... ................... ......... .......... ......... ................... ......2-3
Segment Switching .........................................................................................................2-4
Extending a Network ......................................................................................................2-6
Bridging from 10BASE-T to 100BASE-TX Networks ......................................................2-7
Power Workgroups .........................................................................................................2-8
Chapter 3
Installation
Package Contents ..........................................................................................................3-1
Operating Environment ...................................................................................................3-2
Power Specifications .......................................................................................................3-2
Installing the Switch ........................................................................................................3-3
Installing the BayStack 70 Series 10/100 Ethernet Switch on a Flat Surface ..........3-3
Mounting the BayStack 70-24T 10/100 Ethernet Switch in a Rack ..........................3-4
Connecting Devices to the Switch ..................................................................................3-5
Connecting Power ...........................................................................................................3-6
Verifyin g Installation ......................... ......... .......... ................... ......... .......... ......... .............3-7
Checking the Diagnostic Displays ........................................... ....... ..... ....... ....... ....... ..... .3-8
Chapter 4
Troubleshooting
Using the LED Display ....................................................................................................4-1
Appendix A
Technical Specifications
Product Specifications ...................................................................................................A-1
Appendix B
Cables and Connectors
10BASE-T/1 0 0B ASE- TX UTP Cable .................. ................... ......... .......... ......... ............B-1
Straight-Through and Crossover Cables .......................................................................B-2
Index
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Figures
Figure 1-1. Front Panel of the BayStack 70-8T 10/100 Ether net Switch ....................1-3
Figure 1-2. Front Panel of the BayStack 70-16T 10/100 Ether net Swi tch ..................1-3
Figure 1-3. Front Panel of the BayStack 70-24T 10/100 Ether net Swi tch ..................1-3
Figure 1-4. BayStack 70-24T 10/100 Ethernet Switch LEDs .....................................1-5
Figure 1-5. Rear Panel of the BayStack 70-8T 10/100 Ethernet Switch and
BayStack 70-16T 10/100 Ethernet Switch ..........................................1-7
Figure 1-6. Rear Panel of the BayStack 70-24T 10/100 Ethernet Switch ..................1-7
Figure 1-7. DC Power Adapter ................................................................................... 1-8
Figure 2-1. Using a BayStack 70 Series 10/100 Ethernet Switch as a
Desktop Switch ...................................................................................2-3
Figure 2-2. Using a BayStack 70 Series 10/100 Ethernet Switch as a
Segment Switch ..................................................................................2-5
Figure 2-3. Using BayStack 70 Series 10/100 Ethernet Switches for Network
Extension ............................................................................................2-6
Figure 2-4. Bridging 10 Mb/s Networks to 100 Mb/s Networks ..................................2-7
Figure 2-5. Power Workgroup Connections ................................................................ 2-8
Figure 3-1 . Installing the Switch in a Rack ................ .... .. . .... . .. .... . .. .... . .. .... . .... . .. .... . .. ..3-5
Figure 3-2. BayStack 70-24T 10/100 Ethernet Switch LED Display ...........................3-8
Figure B-1. Straight-Through Twisted-Pair Cable ......................................................B-2
Figure B-2. Crossover Twisted-Pair Cable .................................................................B-2
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Tables
Table 1-1. Description of Switch and Port Status LEDs ............................................1-6
Table 1-2. MAC Address Quantities .......................................................................... 1-9
Table 1-3. Buffer Sizes ............................................................................................1-10
Table 1-4. External Power Adapters ....................................................................... 1 -11
Table 3-1. Description of Switch and Port Status LEDs ...........................................3-9
Table A- 1. Technical Specifications ...................... ................... ......... .......... ......... ..... A-1
Table B-1. RJ-45 Connector Pin Assignments .........................................................B-1
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Preface
Congratulations on your purchase of a BayStack 70-8T 10/100 Ethernet Switch,
BayStack 70-16T 10/100 Ethernet Switch, or BayStack 70-24T 10/100 Ethernet
Switch. These swi tc hes pro vide eigh t, 16, or 24 por ts, r espec tiv e ly. Switches in the
BayStack™ 70 Series provide you with low-cost network solutions and let you
easily upgrade your existing 10 megabit per second (Mb/s) Ethernet network to
100 Mb/s Fast Ethernet. The
BayStack 70-16T 10/100 Ethernet Switch
workgroup switches. The
as a desktop switc h as well , b ut it als o oper ates as a se gment switc h when in stalle d
in a wiring closet.
BayStack 70-8T 10/100 Ethernet Swit ch
are designed for use as desktop or
BayStack 70-24T 10/100 Ethernet Switch
and
can be used
Purpose
206375-A
A BayStack 70 Series 10/100 Ethernet Switch is easy to use and maintain, and it
provides seamless plug-and-play installation into your network. All BayStack 70
Series 10/100 Ethernet Swi tch models are designed to support workgroups
operating at 10 Mb/s and/or 100 Mb/s.
In this guide, the BayStack 70-8T 10/100 Ethernet Switch, BayStack 70-16T 10/
100 Ethernet S witch, and BaySta ck 70- 24T 10/100 Ethe rnet S witch are referred to
collectively as the BayStack 70 Series 10/100 Ethernet Switch. Each model is
referred to specifically when features and functions are unique to that particular
model.
This guide provides information about using the features and capabilities of the
BayStack 70 Series 10/100 Ethernet Switch.
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Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Aud i en ce
This guide is intended for Ethernet local area network (LAN) administrators with
the follo wing background:
• Working knowledge of PC terminology and operation
• Working knowledge of 10BASE-T (Ethernet) and 100BASE-TX (Fast
Ethernet) operations
™
• Nortel Networks
network experience
Hard-Copy Technical Manuals
You can print selected technical manuals and release notes free, directly from the
Internet. Go to support.baynetw ork s.c om/library/tpubs/. Find the product for
which you need documentation. Then locate the specific cate gory and model or
version for your hardw are or softwa re product. Using Adobe Acrobat Reader, you
can open the manuals and release notes, search for the sections you need, and prin t
them on most standard printers. You can download Acrobat Reader free from the
Adobe Systems Web site, www.adob e.com.
xiv
You can purchase selected documentation sets, CDs, and technical publications
through the collater al catalog. The catalog is located on the World Wide Web at
support.baynetworks.com/catalog.html and is divided into sections arranged
alphabetically:
• The “CD ROMs” section lists available CDs.
• The “Guides/Books” section lists books on technical topics.
• The “Technical Manuals” section lists a vailable printed docu menta tion sets.
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How to Get Help
If you purchase d a se rvi ce con t ract fo r your Nortel Networks product from a
distributor or authorized reseller, contact the technical support staff for that
distributor or reseller for assistance.
If you purc hased a Nortel Ne tworks service program, contact one of the foll owing
Nortel Networks Technical Solutions Centers:
T echnical Solutions Center Telephone Number
Billerica, MA 800-2LANWAN (800-252-6926)
Santa Clara, CA 800-2LANW AN (800-252-6926)
Valbonne, France 33-4-92-96-69-68
Sydney, Australia 61-2-9927-8800
Tokyo, Japan 81-3-5402-7041
Preface
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Chapter 1
Introduction
This chapter gives you an overview of the three BayStack 70 Series 10/100
Ethernet Switches. The chapt er describes the front and rear panels of each switch
and explains in detail the components on each of the panels. The chapter lists the
key feature s of the switches.
BayStack 70 Series 10/100 Ethernet Switches Ove rview
The BayStack 70-8T, 70-16T, a nd 70-24T 10/100 Ethernet switches are
autosensing 10/100 Mb/s switc hes. The BayStack 70-8T 10/100 Ethernet Switch
and BayStack 70-16T 10/100 Ethernet Switch are intended for use on desktops or
other level surfaces. The BayStack 70-24T 10/100 Ethernet Switch can be used
either as a desktop switch or as a segment switch in a wiring closet environment,
mounted in a standard 19-inch equipm ent rack.
206375-A
All ports on a BayStack 70 Series 10/100 Ethernet Switches can autosense their
transmission speed to match the best speeds of the connected stations. BayStack
70 Series 10/100 Ethernet Swit ches ports operate at speeds up to 100 Mb/s. Each
port can autonegotiate with the connected devic e to operate in full-duplex mode.
If the connected de vi ce is ope rating a t half- duple x mode onl y, or does not have the
capability to partic ipate in the autonegotiation process, the port will default to
half-duple x mode.
1-1
Page 18
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
The BayStack 70 Series 10/100 Ethernet Switches can be used to segment a
10 Mb/s or 100 Mb/s network to enhance the capacity of the network to support
advanced applications. The switch provides a link between traditional 10 Mb/s
networks and faste r 100 Mb/s networks. By installing a 10/100 autosens ing
switch, a user can connect any 10 Mb/s or 100 Mb/s device to the switch without
being concerned about the transmission speed of the device. One of the many
benefits pr ovided by the BayStack 70 Series 10/100 Ethernet Switches is that
network user s can migrate from 10 Mb /s switching to 100 Mb/s switching using a
single product.
Physi cal Description
Each BayStack 70 Series 10/100 Ethernet Switches is housed in a sturdy
enclosure wit h a sli m prof ile t hat makes it usab le as a desktop unit. In addit ion, the
BayStack 70-24T 10/100 Ethernet Switch can be mounted in a standard 19-inch
equipment rack, depending on the amount of connections your network requires.
The followi ng sections provide physical descriptions of the switches and an
overv iew of the components on the front and rear panels.
Front Panel
1-2
The front panel of each switch contains:
• RJ-45 10BASE-T/100BASE-TX Ethernet ports
• One Power LED
• One 10/100 Link/Activity LED per port
• One half-duplex (HDX) / full-duplex (FDX) LED per port
• MDI/MDI-X push button to set port 1 to uplink (MDI) mode
Figure 1-1
70-8T 10/100 Ethernet Switch , BaySt ack 70- 16T 10/100 Ethernet Switch, and
BayStack 70-24T 10/100 Ethernet Switch, respectively.
, Figure 1-2, and Figure 1-3 illustrate the front panel of the BayStack
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Page 19
Introduction
LED
Power On
Power LED
MDI/MDI-X button
MDIX/MDI
123456
10BASE-T/100BASE-TX Ports
78
display
1234567
Figure 1-1. Front Panel of the BayStack 70-8T 10/100 Ethernet Switch
LED
display
135791113
2 4 6 8 10 12 14 16
Power On
Power LED
MDI/MDI-X button
1357911
MDIX/MDI
2 4 6 8 10 12
10BASE-T/100BASE-TX Ports
13 15
14 16
8
15
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
70-8T Switch
9203EA
70-16T Switch
9204EA
Figure 1-2. Front Panel of the BayStack 70-16T 10/100 Ethernet Switch
LED
display
135791113
2 4 6 8 10 12 14 16
15
17 19 21 23
18 20 22 24
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
Power On
Power LED
MDI/MDI-X button
135757 911911
MDIX/MDI
2 4 6 8 8 8 10 1210 12
10BASE-T/100BASE-TX Ports
13 15
14 16
Figure 1-3. Front Panel of the BayStack 70-24T 10/100 Ethernet Switch
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70-24T Switch
9210EA
1-3
Page 20
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
RJ-45 10BASE-T/100BASE- T X Ethernet Ports
The RJ-45 10B ASE-T/100B ASE-TX Ethernet port s connect the switch to netwo rk
devices using standard unshielded twisted-pair (UTP) cable. The BayStack 70
Series 10/100 Ethernet Swi tch es does not support shielded twisted-pair (STP)
cable. Each port adapts to the corre ct network speed of 10 Mb/s or 100 Mb/s
through autonegotiation with the network interface card (NIC), hub, or other
switch connected to the BaySt ack 70 Se ries 10/100 Et hernet S witche s. By default,
each Ethernet port is wired as an MDI-X port to connect end stations without
using a crossover cable.
MDI/MDI-X Button
The MDI/MDI-X push but ton converts port 1 from an MDI-X (normal) port to an
MDI (uplink) port to allo w you to conn ect the switch to another Ethernet switch
without a crossover cable.
Observe sta ndard networking guide lines when instal ling or connectin g a
Note:
BayStack 70 Series 10/100 Ethernet Switches to additional devices.
1-4
Refer to Appendix B, “Cables and Connectors, ” for more information about
MDI/MDI-X ports and cabling.
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Page 21
2 4 6 8 10 12 14 16
135791113
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
15
18 20 22 24
17 19 21 23
Introduction
LEDs
The LEDs on the BayStack 70 Series 10/100 Ethernet Switches allow you to
identify informa tion about the perf ormanc e and status of the swit ch including link
activ ity, data transmission speed, and duplex mode.
Figure 1-4
shows the LEDs on the front panel of the BayStack 70-24T 10/100
Ethernet Switch. Front panel LEDs for the BayStack 70-8T 10/100 Ethernet
Switch and BayStack 70-16T 10/100 Ethernet Switch are identical.
135757 911911
Power On
MDIX/MDI
2 4 6 8 8 8 10 1210 12
13 15
14 16
135791113
2 4 6 8 10 12 14 16
17 19 21 23
15
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
18 20 22 24
70-24T Switch
9316EA
Figure 1-4. BayStack 70-24T 10/100 Ethernet Switch LEDs
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Table 1- 1 provides descriptions of the LEDs.
1-5
Page 22
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Table 1-1. Description of Switch and Port Status LEDs
Type Label Color Activity Description
Port Status 10/100
Link/Activity
Port Mode HDX/FDX Green On P ort is operat ing in full-duplex mode.
Power Power Green On Power is being supplied to the switch.
Yellow On Port is connected at 10 Mb/s.
Yellow Blinking 10 Mb/s activity is occurring on the port.
Green On Port is connected at 100 Mb/s.
Blinking 100 Mb/s activity is occurring on the port.
Off No link is established on the port.
Off Port is operating in half-duplex mode.
Off Power is not being supplied to the switch.
Rear Panel
This section provides rear panel details for the BayStack 70-8T 10/100 Ethernet
Switch and BayStack 70-16T 10/100 Ethernet Switch and separate details for the
BayStack 70-24T 10/100 Ethernet Switch.
Rear Panel of the BayStack 70-8T 10/100 Ethernet Switch and BayStack 70-16T 10/100 Ethernet Switch
The rear panel of the BayStack 70-8T 10/100 Ethernet Switch and BayStack
70-16T 10/100 Ethernet Switc h contains a power receptacle for the AC to DC
power adapt er tha t ships with the switch. Refer to “
page 1-8 for details regarding the power adapters. A label on the rear panel
displays the date, manuf acturing model number , order number, and serial number
of the switch.
DC Power Adapter” on
1-6
The rear panel of the BayStack 70-8T 10/100 Ethernet Switch and rear panel of
the BayStack 70-16T 10/100 Etherne t Swit ch are identical and are illustrated in
Figure 1-5
.
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Page 23
DC power
adapter socket
-
Figure 1-5. Rear Panel of the BayStack 70-8T 10/100 Ethernet Switch and
BayStack 70-16T 10/100 Ethernet Switch
Rear Panel of the BayStack 70-24T 10/100 Ethernet Switch
The rear panel of the BayStack 70-24T 10/100 Ethernet Switch contains a
standard A C power connect or , as shown in Figure 1-6
. A separate power adapter is
not required for the BayStack 70-24T 10/100 Ethe rnet Switch. A label on the re ar
panel displays the date, manufacturing model number, order number, and seri al
number of the switch.
Introduction
5Vdc
+
9235EA
AC power
connector
Figure 1-6. Rear Panel of the BayStack 70-24T 10/100 Etherne t Switch
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AC LINE
100-240 VAC
50-60 Hz
1.2A MAX
9031EB
1-7
Page 24
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
DC Power Adapter
The BayStack 70-8T 10/100 Ethernet Switch and BaySta ck 70-16T 10/100
Ethernet Switch are shipp ed with a power adapter and cord, as shown in
Figure 1-7.
Power cord
adapter
9331FA
Figure 1-7. DC Power Adapter
Cable Holder
1-8
Warning:
Use only the power adapter that was shipped with your switch to
supply power to that switch. Read the amperage label on the power adapter to
be sure it is the correct adapter for your switch.
Do not use the 8-port adapter (5 V DC/3 Amp) with a 16-port switc h.
Do not use the 16-port adapter (5 V DC/4 Amp) with an 8-port switch.
The BayStack 70-8T 10/100 Ethernet Switch is shipped with a 5 V DC/3 Amp
power adapt er. Be sure to use this 3 Amp adapter only with the 8-port switch.
The BayStack 70-16T 10/100 Ethernet Switch is shipped with a 5 V DC/4 Amp
power adapt er. Be sure to use this 4 Amp adapter only with the 16-port switch.
A small plastic clip, or holder, can be screwed into the base of the switch to hold
the power adapte r cable in place. The hole for the cable holder is located on the
bottom of the switch, near the DC po wer receptacle.
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Page 25
Cooling Fans
Variable-speed cooling fa ns in the BaySta ck 70-16T 10/100 Ethernet Switch and
BayStack 70-24T 10/100 Ethernet Switch provide cooling for the internal
components. When you install the switch, be sure to allow enough space on both
sides of the switch for adequate air flow around the switch.
Features
The BayStack 70 Series 10/100 Ethernet Switches has the following key features:
• Eight (BayStack 70-8T 10/100 Ethernet Switch), 16 (BayStack 70-16T 10/
• Automatic address learning to build MAC frame forwarding information
Introduction
100 Ethernet Switch), or 24 (BayStack 70-24T 10/100 Ethernet Switch)
autosensing 10/1 00 Mb/s Ethernet po rt s to pro vide fa st infor mation e xcha nge,
resource sharing, and client or peer-to-peer communication using standard
Category 5 unshielde d twisted pair (UTP) cable
tables, as shown in Ta ble1-2
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Table 1-2. MAC Address Quantities
Model MAC Addresses in Information Table
BayStack 70-8 T
10/100 Ethernet
Switch
BaySt a ck 7 0-16T
10/100 Ethernet
Switch
BaySt a ck 7 0-24T
10/100 Ethernet
Switch
Up to 8,000 MAC addresses are supported. Therefore, the switch
can support networks with up to 8,000 devices.
Up to 12,000 MA C addresses are supported. Therefore, the switch
can support networks with 12,000 devices.
Up to 12,000 MA C addresses are supported. Therefore, the switch
can support networks with up to 12,000 devices.
1-9
Page 26
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
• Filtering and forwarding incoming and outgoing tra ffic to the appropriate
route without slowing down the traffic
• Store-and-forward forwar ding mode to mini mize erroneous packets on the
network
• Autonegotiation on each port with the following four modes:
— 10BASE-T half-duplex
— 10BASE-T full-duplex
— 100 BASE-TX half-duplex
— 100 BASE-TX full-duplex
Note:
In order for ports on a
BayStack 70 Series 10/100 Ethernet Switch
to
operate in full-duplex mode, the switch must be connected to a de vic e that
supports autonegotiation in accordance with the IEEE 802.3u specification.
• Back pressure in half-duplex mode
• Automatic polarity detection and correction
• Easy plug-and-play installation with no sof tware to configure, which sa ves
time and minimizes the potentia l for co nfiguration errors
• A comprehensive LED indicator panel for monitoring switching condition
and individua l port status
• Conformity to the IEEE 802.3u 100BASE-TX Class II standard
• Conformity to the 802.3 10BASE-T standard
• Per port buffer sizes, as sho wn in Table 1-3
Table 1-3. Buffer Sizes
Model Buffer Size
BayStack 70-8T 10/100 Ethernet Switch 64 kilobytes (KB)
BayStack 70-16T 10/100 Ethernet Switch 128 KB
BayStack 70-24T 10/100 Ethernet Switch 128 KB
1-10
• MDI/MDI-X push button switch for uplink capability
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Page 27
Introduction
• External universal power adapter, as shown in Table 1-4
Tabl e 1-4. External Power Adapters
Model External Power Adapter
BayStack 70-8T 10/100 Ethernet Switch 5V 3A
BayStack 70-16T 10/100 Ethernet Switch 5V 4A
BayStack 70-24T 10/100 Ethernet Switch n/a (This model has an internal power
supply and uses a standard power cord.)
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1-11
Page 28
Page 29
Chapter 2
Network Configura tion
The BayStack 70 Series 10/100 Ethernet Switch is designed to provide flexibility
in confi guring your network connections. Each switch in the series can be used as
a standalone device or can be used with 10 Mb/s and/or 100 Mb/s hubs or other
interconnection devices in vari ous configurations. The conf iguration examples in
this chapter illustrate the integration of the switches in network environments of
all sizes and types. These exa mples include a network of a few worksta tions
connected to a printer or a segmented network with multiple users or workgroups
and other networking devices.
Benefits of Using Switching Te chnology
Ethernet switches pro vide private, dedicated, 10 Mb/s or 100 Mb/s capacity to
each connected PC/server or hub/workgroup segment, which is a significantly
higher capacity than in a shared environment. The higher bandwidth enables the
use of applications such as multimedia, imaging, video, or high-performan ce
client-server functions among users who are spread out over the network.
This improvement is accomplished very easily, with no change to the desktop
(such as, network interf ace cards or software and network wir ing). As a result, the
performance upgrade and the appli catio ns enabled b y th e switch are obtained v ery
quickly and at a low cost.
Ethernet switches significantly increas e network throughput by segmenting
network traffic. Switches check traffic coming in to each port to learn which
network device is located on which segment. Based on this infor mation, switches
forward cro ss-segment traffic only to the appropriate se gment. The traffic will not
show up in the other segm ents because it is filtered out. In this way, network
capacity is fully rese rv ed for traffic destined for that segment only, and other
segments will not be saturated with unnecessary traffic.
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2-1
Page 30
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Types of Ethernet Switches
Ethernet switches can be cla ssified as desktop switches or as segment switches.
A desktop switch is designed to support one or a few PCs per port. It is genera lly
used when individuals need the full 10 Mb/s network throughput to support their
applications. Often, these switches support only a single MAC (media access
control) address per port, have high-speed 100 Mb/s ports to connect to
high-powe r servers, and are relatively inexpensiv e compared to a segment switch.
A segment switch, in contrast, is designed to support an entire workgroup on
each port, with each port having significant memory buffering and supporting
thousands of MAC addresses.
Switches can al so be classified by speed. As the name suggests, 10 Mb/s switche s
support only 10 Mb/s connections . Similarly, 100 Mb/s switches support only 100
Mb/s connections. Some types of 10+100 Mb/s switches have primarily 10 Mb/s
ports with one or a few 100 Mb/s ports. Autose nsing 10/100 Mb/s switches such
as the BayStack 70 Series 10/100 Ethernet Switch support 10 Mb/s or 100 Mb/s
connections on each port, and offer great versatility and adaptability.
2-2
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Page 31
Deskt o p Sw it ch ing
Figure 2-1 illustrates a BaySta ck 70-8T 10/100 Ethernet Switch used as a desktop
switch to rebuild a small network that enables users to have 100 Mb/s access to a
file server or network center. You can use the BayStack 70-16T 10/100 Ethernet
Switch or
similar applicat ion, if you have more users or devices to connect.
You can replace your existing 10B ASE-T hub with a BayStack 70 Series 10/100
Ethernet Switch in order to access devices with various transmission speeds or to
connect to a larger num ber of users.
Before After
BayStack 70-24T 10/100 Ethernet Switch
Network Configuration
as a desktop switch, in a
10BASE-T hub
Server Up to 6 users
To
Network
Center
Key
10 Mb/s
100 Mb/s
200 Mb/s
- 6 users share 10 Mb/s (10/6 Mb/s per user)
- Server bottleneck (10 Mb/s bandwidth)
- Network center bottleneck (10 Mb/s bandwidth)
Model 810
BayStack 70-8T Switch
Server Up to 6 users
To
Network
Center
- 6 users; each with dedicated 100 Mb/s bandwidth
- Server with dedicated 100 Mb/s bandwidth
- Network center with dedicated 100 Mb/s full-duplex
bandwith (200 Mb/s bidirectional)
70-8T Switch
9305EA
Figure 2-1. Using a BayStack 70 Series 10/100 Ethernet Switch as a Desktop Switch
206375-A
If a full-duplex adapter card is installed in the server or PC, a 200 Mb/s
Note:
connection is possible on the port where the server or PC is connected.
2-3
Page 32
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Segment Switching
The BayStack 70 Series 10/100 Ethernet Switch can segment a network into
multiple connected pieces, increasing overall bandwidth and throughput.
Figure 2-2
illustrates a
BayStack 70-24T 10/100 Ethernet Switch
segmenting
networks that are b uilt with BayStack 60-24T Ethernet Hubs. Adding a
70-24T 10/100 Ethe rnet Switch
to hub conf igurations allows you to connect more
users and devi ces and to provide faster throughput across your network.
BayStack
2-4
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Page 33
Network Configuration
Server
To
Network
Center
Key
10 Mb/s
100 Mb/s
200 Mb/s
Before
BayStack 60-24T
Hub
60-24T Hub
60-24T Hub
Up to
44 users
BayStack 70-24T
Switch
To
Network
Center
After
Server
60-24T Hub
60-24T Hub
60-24T Hub
60-24T Hub
Up to 18
users
Up to 23
users
Up to 23
users
Up to 23
users
Up to 23
users
70-24T Switch
- 44 users share 10 Mb/s (10/44 Mb/s per user)
- Server bottleneck (10 Mb/s bandwidth)
- Network center bottleneck (10 Mb/s bandwidth)
-Total of 44 users
- Four sets of 23 users; each set shares 10 Mb/s
(10/23 Mb/s per user)
- Addition of 18 users; each with dedicated
100 Mb/s bandwidth
- Server with dedicated 100 Mb/s bandwidth
- Network center with dedicated 100 Mb/s full-duplex bandwidth
(200 Mb/s bidirectional)
- Total of 110 users
9303EA
Figure 2-2. Using a BayStack 70 Series 10/100 Ethernet Switch as a Segment Switch
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2-5
Page 34
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
A
Extending a Network
Ethernet specif ications limit the length of cable between hubs an d PCs to
100 meters (m) for a total dia meter of 200 m. By adding Fast Ethernet switches
between hubs, the ne two rk is ex pand ed by 2 00 m with the a dditi on of each swi tch .
Figure 2-3
integrated with three
illustrates a networ k of
BayStack 70-24T 10/100 Ethernet Switch
any combination of the BayStack 70 Series 10/100 Ethernet Switches, depending
on the needs of your network. You can add numerous workstati ons, printers,
servers, or other hubs and switches to this configuration to include all the end
stations on your exte nded network.
BayStack 70-8T 10/100 Ethernet Switches
es. You can use
BayStack 70-8T
Switch
Key
10 Mb/s
100 Mb/s
BayStack 70-24T
Switch
70-24T Switch 70-24T Switch 70-24T Switch
70-8T Switch
BayStack 70-24T
Switch
BayStack 70-8T
70-8T Switch
Switches
100 m
BayStack 70-24T
Switch
70-8T Switch
100 m
70-8T Switch
9321E
Figure 2-3. Using BayStack 70 Series 10/100 Ethernet Switches for Network Extension
2-6
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Page 35
Network Configuration
Bridging from 10BASE-T to 100BASE-TX Networks
The BayStack 7 0 Series 10/100 Ether net Switch can functio n as a two-port br idge
connecting traditional 10BASE-T Ethernet networks to 100BASE-TX Fast
Ethernet netw orks. User s requiri ng increase d networ k bandwidt h can be upgr aded
to 100 Mb/s while remaining connected to the rest of the network. Figure 2-4
illustrates a BaySta ck 70-8T 10/100 Ethernet Switch and a BayStack 70-16T 10/
100 Ethernet S witch connected by a
well as attached to several other network and end station devices
BayStack 70-24T 10/ 100 Ethernet Switch, as
.
Server
70-16T Switch
BayStack 70-16T
Switch
Key
10 Mb/s
100 Mb/s
9323EA
BayStack 70-8T
Switch
70-8T Switch
BayStack 70-24T
Switch
70-24T Switch
Figure 2-4. Bridging 10 Mb/s Networks to 100 Mb/s Networks
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2-7
Page 36
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Power Workgroups
The BayStack 70 Series 10/100 Ethernet Switch increases bandwidth for power,
or high-density, workgroups and strengthens network throughput.
As shown in Figure 2-5
several BayStack switches, as well as high-density end stations and servers. End
users can use 10 Mb/s or 100 Mb/s connections throughout this network, as
determined by thei r bandwidth requirements.
BayStack 70-24T
BayStack 450-24T
Switch
Key
10 Mb/s
100 Mb/s
Switch
Server
BayStack 70-24T 10/100 Ethernet Switch
, a
70-24T Switch
303
BayStack 303
Switch
60-16T Hub
BayStack 60-16T
Hub
304
connects to
BayStack 304
Switch
9304EB
2-8
Figure 2-5. Power Workgroup Connections
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Page 37
This chapter provides information about and procedures for checking the pa ckage
contents, preparing the site, and performing and verifying the installation of the
BayStack 70 Series 10/100 Ethernet Switch.
P ackage Contents
Unpack the contents of the package and verify the items against the following list:
Chapter 3
Installation
• One of the following BayStack 70 Series 10/100 Ethernet Swi tches:
— BayStack 70-8T 10/100 Ethernet Switch (8-port 10/100 Mb/s switch)
— BayStack 70-16T 10/100 Ethernet Switch (16-port 10/100 Mb/s switch)
— BayStack 70-24T 10/100 Ethernet Switch (24-port 10/100 Mb/s switch)
• Four self-adhesive rubber feet for placing the switch on a flat surface
• Plastic cable holder and metal screw for securing the power cable or power
adapter cord
• Wall Mount Kit, including screws an d f asteners (for the BayStack 70-8T 10/
100 Ethernet Switch or BayStack 70-16T 10/100 Ethernet Switch only)
• Rack Mount Kit, inc luding brackets and sc rews (fo r the Ba y Stack 7 0-2 4 T 10/
100 Ethernet Switch only)
• One of the following power adapters
— BayStack 70-8T 10/100 Ethernet Switch: 5V 3A DC power adapter
— BayStack 70-16T 10/100 Ethernet Switch: 5V 4A DC power adapter
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Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
• Optional, country-specific power cord, which can be purchased with your
switch
• Warranty card
• Safety Information card
Operating Environment
Before you begin installing your switch, prepare the installation site. Make sure
the operating environment, as listed in Appendix A, “Technic al Specifications,”
meets the physical requ irements of the switch.
Install your BayStack 70 Series 10/100 Etherne t Switch in a vent ilated area tha t is
dust free and away from heat vents, warm air exhaust from other equipment, and
direct sunlight. Avoid proximity to large ele ctric motors or other electromagnetic
equipment.
Power Specifications
3-2
BayStack 70-8T 10/100 Ethernet Switch
The
Ethernet Switch
10/100 Ethernet Switch
power supply. You can purchase a country-specific power cord for any BayStack
70 Series 10/100 Ethernet Swit ch.
Before connecti ng the switch to power with any power c ord, make sure the po wer
cord has a plug on the other end that is appropriate for the country where you are
using the switch.
Danger:
ground, a person touc hing the unit is in d anger of r ecei vi ng an electr ical shoc k.
Lack of a grounding path to the unit may result in excessive conducted or
radiated emissions.
feature an exte rnal 5 V DC power adapter. The
has an internal (100 to 240 V AC, 50 to 60 Hz) universal
Use only power cords with a grounding path. Without a proper
BayStack 70-16T 10/100
and
BayStack 70-24T
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Page 39
Installation
Insta lli n g th e Switch
Before installing the switch:
Unpack th e switch.
1.
Choose a location near the devic es to be connecte d and close to an
2.
electrical outlet.
Proceed to “Installing the BayStack 70 Series 10/100 Ethernet Switch on
3.
a Flat Surface” or “Mounti ng the BaySta ck 70-24 T 10/100 Ethernet
Switch in a Rack.”
Installing the BayStack 70 Series 10/100 Ethernet Switch on a Flat Surface
BayStack 70 Series 10/100 Ethernet Switch
The
appropriate flat, level surface that can safely support the weight of a switch and its
attached cables, as long as there is adequate space around the unit for venti lat ion
and access to cable connectors.
can be mounted onto any
206375-A
Caution:
When the
BayStack 70 Series 10/100 Ethernet Switch is installed in
a stack on a shelf or tabletop, the accumula ted weight of the port cables
increases with the height of the shelf or tabletop.
To install the switch o n a desk top or any othe r fla t surface:
Install the self-adhesive rubber pads on the bottom of the switch.
1.
Peel off the protective backing from the rubber pads and apply one at each
marked location on the bottom of the switc h.
Set the switch o n a de skto p or any other flat surface.
2.
For prope r ventilation, make sure that the switch ha s at least 2 inches (5.1 cm)
of space on each side and 5 inches (12.7 cm) of space at the back.
Caution:
Restricted airflo w co uld cause overheating of the components. Be
sure to provide adequate ventilation space on the sides and rear of the switc h.
3-3
Page 40
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Attach any additional devices to the ports in your switch.
3.
For instruct ions to connect to additional switches or other devices, refer to
Connecting Devi ces to the Switch” on page 3-5.
“
Mounting the BayStack 70-24T 10/100 Ethernet Switch in a Rack
The BayStack 70-24T 10/100 Ethernet Switch occupies a 1.6 unit (1.6u) rack
space and can be installed in most standard 19-inch equipment racks. The rack
must be grounded to the same grounding electrode used by the power service in
the area. The ground path must be permanent and must not exc eed 1 ohm of
resistance from the rack to the grounding electrode.
Caution:
When mounting this device in a rack, do not place units directly on
top of one another in the rack. Each unit must be individually secured to the
rack with appropriate mounting brackets. Mounting brackets are not designed
to support multiple units.
To mount the BayStack 70-24T 10/100 Ethernet Switch in a standard 19-inch
equipment rack, you need these tools and materials:
• Two mounting brackets supplied from the Rack Mount Kit
• Eight screws supplied from the Rack Mount Kit to attach the mounting
brackets to the switc h
• Four screws and nylon washers supplied from the Rack Mount Kit to attach
the mounting bracket s to the rack
• #1 Phillips screwdriver
• #2 Phillips screwdriver
To install the switch in a rack :
Attach the mounting brackets to the sides of the switch as illustrated in
1.
Figure 3-1.
Hold a mounting bracket aga inst e ach side of the switch and align the
countersunk sc rew holes in the bracket with the bracket mounting holes in the
switch.
3-4
Insert the screws provided in the Rack Mount Kit through each bracket
2.
and into the bracket mounting holes in the switch.
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Page 41
Using a #1 Philli ps screwdriver, tighten the screws to secure each bracket.
3.
Hold the switch with the mounting holes in the brackets aligned w i th the
4.
holes in the rack.
Insert two screws, appropriate for your 19-inch rac k, into ea ch of the
5.
mounting brackets and tighten the screws.
Figure 3-1. Installing the Switch in a Rack
Connecting Devices to the Switch
Installation
70-24T Switch
9350FA
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You can connect the
BayStack 70 Series 10/100 Ethernet Switch to any device
that conforms to the IEEE 802.3 Ethernet sta ndard, such as the following devices:
• Ethernet networking devices
• Individual workstations or servers
• Other switches, bridges, or hubs
The HDX/FDX LED on all
BayStack 70 Series 10/100 Ethernet Switch
front
panels indicates whet her the switch is operating in half- or full-duplex mode.
When the HDX/FDX LED is on, the port is operating in full-duplex mode
(meaning the port is operating at either 20 Mb/s or 200 Mb/s, depending on the
connecting de vice). When the HDX/FDX LED is off, the port is operating in
half-duple x mode, whic h is 10 Mb/s or 100 Mb/s.
3-5
Page 42
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
You can connect to another device through any of the ports on the switch. The
MDI/MDI-X button elimina tes the need to use a crossover twist ed pair cable when
connecting similarly wired devices. You can configure port 1 on a BayStack 70
Series 10/100 Ethernet Swi tch to uplink or normal mode with the MDI/MDI-X
button, using the following guidelines:
• Set the MDI/MDI-X button to the MDI-X (Normal) position and use a
standard straight-through UTP cable if the remote end of the cable is
connected to an MDI wired device such as a PC, a server, or a router.
• Set the MDI/MDI-X button to the MDI (Uplink) position and use a
straight-thr ough UTP cable if the remote end of the cable is connected to
an MDI-X wired devi ce such as a 10 Mb/s or 100 Mb/s hub or repeat er , or
for backbone connection to another switch.
By default, the UTP ports without the MDI/MDI-X button are normal
(MDI-X) ports and cannot be conf igured for uplink (MDI) wiring. If you are
using any por t except port 1 to connect to another normal (MDI-X) port as on
a hub or repeater , you must use a crossover twisted pai r cable to connect the
two ports.
For further cabli ng guidelines, refe r to Appendix B, “Cable s and Connectors.”
Connecting Power
BayStack 70 Series 10/100 Ethernet Switch does not have a power on/off
The
switch. When you connect the AC power cor d (or DC power adapter) to a suitable
AC power outlet, the switch powers up immediately.
Warning:
device. The power cord must always be connected in a locat ion that can be
accessed quickly and safe ly in case of an emergency.
3-6
Removal of the power cord is the only way to turn off power to this
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Page 43
Installation
To connect power to the switch:
Connect the power adapter or power cord to the switch using one of the
1.
following methods:
— For the BayStack 70-8T 10/100 Ethernet Switch or BayStack 70-16T 10/
100 Ethernet Switch, connect the DC power adapter to the powe r adapter
receptacle on the rear panel of the swit ch. Then connect a standard power
cord to the adapter.
Warning:
Use only the power adapter that was shipped with your switch to
supply power to that switch. Read the amperage label on the power adapter to
be sure it is the correct adapter for your switch.
Do not use the 8-port adapter (5 V DC/3 Amp) with a 16-port switch.
Do not use the 16-port adapter (5 V DC/4 Amp) with an 8-port switch.
— For the BayStack 70-24T 10/100 Ethernet Switch, connect on e end of the
power cord to the power outlet on the rear panel of the switch.
Screw the plastic cable holder into the bottom of the switch, near the
2.
power receptacle.
Snap the power co rd or power ada p ter co rd in to the ca bl e hol de r to
3.
secure the cord to the s wit ch.
Connect the other end of the power cord to a standard power supply.
4.
The switch autom atically selects the proper voltage in the range of 100 to 240
volts, and the Power LED lights. The switch is now operational.
Verify ing Ins t a lla t ion
When power is applied to the switch, power-on self- tests are run. You can verify
proper orienta tion of t he
the front panel LEDs.
BayStack 70 Series 10/100 Ethernet S witch by observ ing
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Verify network communications b y ensu ring that all the necessary connections
have been made, that all connected resources can be accessed, and that the LED
indicators on t he switc h ar e functi oning prop erly. For additional inf ormatio n, refer
to Chapter 4, “Troubleshooting.”
3-7
Page 44
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
2 4 6 8 10 12 14 16
135791113
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
15
18 20 22 24
17 19 21 23
Checking the Diagnostic Displays
Figure 3-2 il lustrates the LED indicat ors on theBayStack 70-24T 10/100 Ethernet
Switch. LEDs on the BayStack 70-8T 10/100 Ethernet Switch and BayStack
70-16T 10/100 Ethernet Switc h are identical, although there are only as many
LEDs as are require d for the port s on each mo del .
135757 911911
Power On
MDIX/MDI
2 4 6 8 8 8 10 1210 12
13 15
14 16
135791113
2 4 6 8 10 12 14 16
15
17 19 21 23
10/100 Link Activity
HDX/FDX
10/100 Link Activity
HDX/FDX
18 20 22 24
70-24T Switch
Figure 3-2. BayStack 70-24T 10/100 Ethernet Switch LED Display
9316EA
3-8
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Page 45
Table 3-1 describes the LEDs that monitor the BayStack 70 Serie s 10/100
Ethernet Switch.
Table 3-1. Description of Switch and Port Status LEDs
Type Label Color Activity Description
Installation
Port Status 10/100
Link/Activity
Port Mode HDX/FDX Green On P ort is operat ing in full-duplex mode.
Power Power Green On Power is being supplied to the switch.
Yellow On Port is connected at 10 Mb/s.
Yellow Blinking 10 Mb/s activity is occurring on the port.
Green On Port is connected at 100 Mb/s.
Blinking 100 Mb/s activity is occurring on the port.
Off No link is established on the port.
Off Port is operating in half-duplex mode.
Off Power is not being supplied to the switch.
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3-9
Page 46
Page 47
This chapter provides methods for diagnosing problems with the BayStack 70
Series 10/100 Ethernet Swi tch .
Using the LED Display
Use the LED display to help you identify the type of proble m you have; then
check the following:
Chapter 4
Troubleshooting
• Verify that the switch is powered on.
• Verify that each cabl e and port connection has the correct pin assignment and
no connections are loose.
• A good link on a port is verified when the Link/Activity LED is lit for that
port.
If the Power LED is not on:
• Verify that the power adapter and/or power cord are se curely attached to the
switch and to the power outle t.
• Verify that your AC power source is functioning properly.
If the Link LED is not on:
• Verify that the device connected to your switch has a properly funtioning
power supply.
• Try using a different port on your switch to connect to the device.
• Try using a different port on the device connec t ed to your switch.
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4-1
Page 48
Page 49
Table A-1 in this appendix provides technical specifications for the BayStack 70
Series 10/100 Ethernet Switch. Data applies to all thr ee switches unless otherwise
specifie d.
Product Specifications
Tabl e A-1. Technical Specifications
Appendix A
Technical Specifications
Item Description
Network Protocol and Standards Compatibil ity
Data Rate/Encoding
Interfaces
Electrical Specifications
Input power: 70-8T: 15 W, 5 V 3A
Power consumption: 70-8T: 15 W Maximum
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IEEE 802.3 10BASE-T/100BASE-TX Ethernet
IEEE 802.3u 100 Mb/s Ethernet
10 Mb/s diffe rential Manchester encoded
100 Mb/s MLT encoded
125 MHz signal rate
RJ-45 8-pin plug for 10BASE-T and 100BASE-TX
70-16T: 20 W, 5 V 4A
70-24T: 100 to 240 V AC, 50 to 60 Hz, 2A
70-16T: 20 W Maximu m
70-24T: 50 W Maximu m
A-1
Page 50
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Item Description
Physical Specifications
Weight: 70-8T and 70-16T: 3.99 lb (1.81 kg)
70-24T: 5.3 lb (2.5 kg)
Dimensions: 70-8T and 70-16T:
(D) 8.3 x (W) 12.0 x (H) 1.6 in.
(D) 208.0 x (W) 304.7 x (H) 40.6 mm
70-24T:
(D) 12.1 x (W) 17.3 x (H) 1.7 in.
(D) 308.0 x (W) 437.5 x (H) 42.5 mm
Environmental Specificati ons
Operating temperature: 0° to 40° C
Storage temperature: -20° C to 65° C
Operating humidity: 20% to 80% maximum relative humidity,
noncondensing
Storage humidit y: 70-8T and 70-16T:
5% to 90% maximum relative humidity,
noncondensing
70-24T:
10% to 90% maximum relative humidity,
noncondensing
Electromagnetic Emissions
Meets requirements of: FCC Part 15, Subpart B, Class A
AS/NZS 3548 Class A
EN55 022 (CISPR 22) Class A
VCCI Class A ITE
BCIQ
A-2
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Page 51
Item Description
Electromagnetic Susceptibility
Meets requirements of: EN 50082-1
Electrostati c discharge (ESD): EC 801-2, Level 2/3
Radiated electromagnetic field: EC 801-2, Level 2
Electrical fast transient/b urst: EC 801-4, Level 2
Electrical surge: EC 801-5, Level 1/2
Technical Specifications
Safe ty Age n cy Approval s
Performance Specification s
Aggregate bandwdth: 70-8T: 800 Mb/s
Pac ket filtering/forwardin g rate: 14,800 frames/second, maximum on 10 Mb/s port
Forwa rding modes: Store-and-forward
Network latency: Less than 80 microseconds for 64-byte frames in
Address database siz e: 70-8T:
Addressing: 48-bit MAC address
Queue buffer, per port: 70-8T: 64 kil obytes (KB)
UL 1950 or NRTL
CSA C22.2 #950
TUV
NOM
70-16T: 1.6 Gb/s
70-24T: 2.4 Gb/s
148,000 frames/second, maximum on 100 Mb/s port
store-and-forward mode for 10 Mb/s to 100 Mb/s
transmis sion
8,000 media access control (MAC) addresses per
system
70-16T:
12,000 MAC addresses per system
70-24T:
12,000 MAC addresses per system
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70-16T and 70-24T: 128 KB
A-3
Page 52
Page 53
Cables and Connectors
This appendix provide s specifications for cables and connectors used for the
BayStack 70 Series 10/100 Ethernet Switch.
10BASE-T/100BASE-TX UTP Cable
For 10B ASE- T and 100 B ASE-TX c onnection s, use Cate gor y 5, 8- wire unshie lded
twisted pair cable. Configure your network according to the following guidelines:
Appendix B
• Use a maximum segment length of 100 meters.
• Use an 8-pin modular plug (RJ-45).
Table B-1
Table B-1. RJ-45 Connector Pin Assignments
RJ-45
10BASE-T/100BASE-TX
Ethernet Port
8
1
shows the RJ-45 connector pin as signments for MDI-X and MDI ports.
1882.6
Pin
1 RX+ (Receive) RX+ TX+
2 RX- (Receive) RX- TX-
1
8
3 TX+ (Transmit) TX+ RX+
4 Not used Common-Mode
5 Not used CMT
6 TX- (Transmit) TX- RX7 Not used CMT
8 Not used CMT
10BASE-T MDI-X
(Normal) Port
100 BASE-TX
MDI-X Port
Terminated (CMT)
MDI
(Uplink)
Port
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B-1
Page 54
Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
Straight-Through and Crossover Cables
For two de vice s to communi cate, the tra nsmitte r of e ach de vi ce must be conn ected
to the receiver of the other de vice. The crossover function is usually implemented
internally a s part of the c ircuitr y i n the de vi ce. Compute rs a nd work station adapt er
cards are usually media-dependent interface ports, called MDI or uplink ports.
Most hub and switch ports are configured as media-dependent interfaces with
built-in c rosso v er ports, called MDI-X or normal p orts. Re fer to t he instr uction s in
Chapter 3, “Insta llation,” for appropriate cabl e use and connection.
Figure B-1
Transmit
Receive
MDI port MDI-X port
illustrates a straight-through twisted-pair cable.
1
2
Twisted pairs
3
6
1
Receive
2
3
Transmit
6
2008.8
Figure B-1. Straight-Through Twisted-Pair Cable
Figure B-2 illustrate s a crossover twisted-pair cable.
Receive
Transmit
1
2
3
6
1
Receive
2
3
Transmit
6
B-2
MDI-X port MDI-X port
7666EA
Figure B-2. Crossover Twisted-Pair Cable
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Page 55
Numbers
10BASE-T to 100BASE-TX networks, bridging 2-7
10BASE-T/100BA SE-TX ports 1-4
A
applications
bridging from 10BASE-T to 100BASE-TX
networks 2-7
desktop switching 2-3
extending a network 2-6
segment switching 2-4
autonegotiation 1-4
B
bridging from 10BASE-T to 100BASE-TX networks
2-7
button, MDI/MDI-X 1-4
C
cable
10BASE-T connections B-1
crossover and straight-throug h B-2
crosso ver twisted-pair 3-6
straight-through twisted-pair 3-6
cable holder 1-8
connections to other devices 3-5
connectors
10BASE-T/100BASE-TX 1-4, B-1
RJ-45 B-1
crossover twisted-pair cable 3-6, B-2
customer support xv
Index
D
DC power adapter 1-8
desktop switching 2-2, 2-3
E
electrical specifications A-1
electromagnetic susceptibility A-3
environment, operating 3-2
environm en ta l specifica t ions A-2
F
fans 1-9
features 1-9
front pa nel
BayStack 70-16T 10/100 Ethernet Switch 1-3
BayStack 70-24T 10/100 Ethernet Switch 1-3
BayStack 70-8T 10/100 Ethernet Switch 1-3
overview 1-2
full-duplex mode 1-1
H
half-d uplex mode 1-1
high-ba ndw idth file server connections 2-8
I
installation
in a standard equipment r ack 3-4
on a flat surface 3-3
verifying 3-7
installation, trou bleshooting 4-1
206375-A
Index-1
Page 56
L
LEDs
descri ption 3-9
overview 1-5
M
MDI/MDI-X
button 1-4
cables B-2
pin assignm ents B-1
mounting bra ckets 3-4
N
network, extend in g 2-6
Normal/Uplink push button 3-6
O
operating environment 3-2
R
rack mounting the BayStack 70-24T 10/100 Ethernet
Switch 3-4
rear pan el 1-6
RJ-45 connector pin assignments B-1
S
safety agency approvals A-3
segment switching 2-2, 2-4
site preparation 3-2
stand ar d s co m p atibilit y A-1
straight-through cable B-2
straight-through twisted-pair cable 3-6
support , Nortel Netwo rks xv
switching technology
desktop switching 2-2, 2-3
segment switching 2-2, 2-4
P
package contents 3-1
physical specifications A-2
pin assignm ents, RJ-45 connector B-1
ports
autonegotiation 1-4
Ethernet 10BASE-T/100BASE-TX 1-4
power ad a pter 1-8, 1-11
power cord requi re m en ts 3-2
power specifications 3-2
power workgroups 2-8
product features 1-9
product support xv
publications
hard co py xiv
T
technical publicati ons xiv
technical specifications A-1
technical support xv
troubleshooting 4-1
U
uplink po rt B-2
W
workgroup connections 2-8
Index-2
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