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FFICE

ONNECT

THERNET

AND

Ethernet Hub 4 and 4C—Front

Green=AUI

off=COAX

12% 25% 50% 80%

Port Status

Network Utilization

Partitioned

AUI/COAX

Alert

OfficeConnect

Ethernet Hub 4C

Green = OK, Yellow = Partitioned

Power

Collision

Activity

Alert LED

orange

Alerts you to excessive
network use or an
isolated (partitioned)
10BASE-T port.

Power LED

green

Indicates that the hub is
powered on.

Collision LED

yellow

Flashes each time a collision is detected
on the network. Collisions are part of
normal network operation.

Activity LED

(Hub 4 only)

yellow

Flashes each time
a packet is
received on a
port.

Network Utilization LEDs (Hub 4C only)

green/yellow/orange

Indicates how much your network is being used.

10BASE-T Port Status LEDs

green/yellow

green

yellow

off

Indicates the status of each 10BASE-T port.

— The link between the port and the next

piece of network equipment is OK.

— The port has partitioned due to a fault on

that segment.

— Nothing is connected to the port or the link

has failed.

AUI/COAX Status LEDs (Hub 4C only)

green/off=media, yellow=partition

green/off

yellow

Indicates the status of the AUI or 10BASE-2 port, depending on which one is in use.

— The left-hand status LED is green if the AUI port is in use, and off if either

the 10BASE-2 port is being used or nothing is connected to the port.

— If the right-hand status LED is yellow, the port in use has been partitioned.

3C16700.book Page 10 Tuesday, July 13, 1999 9:59 AM

Содержание Gigabit Switch 8

Страница 1: ...OfficeConnect Ethernet Hub 4 4C 8 8C User Guide 3C16704A 3C16703A 3C16700A 3C16701A 3C16700 book Page i Tuesday July 13 1999 9 59 AM...

Страница 2: ...ing All technical data and computer software are commercial in nature and developed solely at private expense Software is delivered as Commercial Computer Software as defined in DFARS 252 227 7014 Jun...

Страница 3: ...Connections 14 Spot Checks 14 Problem Solving for the Hub 4 and 4C 15 The OfficeConnect Ethernet Hub 8 and 8C 17 Ethernet Hub 8 and 8C Front 17 Ethernet Hub 8 and 8C Rear 18 Connecting Workstations an...

Страница 4: ...rvices 30 World Wide Web Site 30 3Com Knowledgebase Web Services 30 Support from Your Network Supplier 31 Support from 3Com 31 Returning Products for Repair 34 3Com Corporation Limited Warranty 35 Ele...

Страница 5: ...guide describes how to use the OfficeConnect hubs The hubs have similar features and so this user guide contains general and specific information When referring to all products this guide uses the ter...

Страница 6: ...range of easy to install network adapter cards which provide your workstations with 10BASE T connections 2 An operating system for example Netware or Windows 95 98 with network support configured run...

Страница 7: ...You can use T pieces but Y pieces provide optimal clearance of the other ports Two 10BASE 2 50 Ohm terminators end pieces Figure 2 Some of the 10BASE 2 Equipment You May Need 10BASE T If you have addi...

Страница 8: ...ting downwards 3 Align the fastening pieces over the slots found on each side of the unit 4 Push the clip down gently to secure it ensuring the fastening pieces snap into the slots on the unit To fit...

Страница 9: ...e template at the back of this guide to mark the position of the holes Fix the screws into the wall leaving their heads 3mm 0 12in clear of the wall surface Remove any connections to the hub and locat...

Страница 10: ...rk Utilization LEDs Hub 4C only green yellow orange Indicates how much your network is being used 10BASE T Port Status LEDs green yellow green yellow off Indicates the status of each 10BASE T port The...

Страница 11: ...only Allows 10Mbps transceivers of different media types to be connected to the hub Connecting a transceiver automatically disables the 10BASE 2 port Uplink Normal switch Affects the operation of por...

Страница 12: ...so you can start using your network immediately When you need more ports simply add more OfficeConnect hubs Connecting Transceivers to the AUI Port You can connect a 10Mbps Ethernet transceiver to yo...

Страница 13: ...next section When using 10BASE 2 cable it is important that both ends of the segment are properly terminated with 50 Ohm terminators end pieces Only use 50 Ohm 10BASE 2 cables and a Y piece for each...

Страница 14: ...sed should be green If they are not check your connections If the 10BASE 2 port is not used and is not terminated and the AUI port is not being used if applicable the LED should be yellow showing that...

Страница 15: ...t Status LED will be yellow Examine your connections and remove the loop Each piece of equipment needs only one connection to your OfficeConnect hub Port Status LED yellow for a 10BASE T port It is li...

Страница 16: ...switch is set to Normal out Also check that the equipment being connected to the hub is powered on and operating correctly Refer to Figure 6 below to compare the wiring of a straight through and a cro...

Страница 17: ...a port Collision LED yellow Flashes each time a collision is detected on the network Collisions are part of normal network operation Network Utilization LEDs Hub 8C only green yellow orange Indicates...

Страница 18: ...Connecting Hubs Using 10BASE 2 on page 20 Uplink Normal switch Affects the operation of port 8 For correct usage refer to Connecting Hubs Using 10BASE T on page 21 Eight 10BASE T RJ 45 ports Use 10BAS...

Страница 19: ...t the cable push the connector s latch in and remove it If you are using port 8 to connect to a workstation using a straight through TP cable ensure the Uplink Normal switch is set to Normal out The h...

Страница 20: ...operly terminated with 50 Ohm terminators end pieces Only use 50 Ohm 10BASE 2 cables and a Y piece for each hub You can use T pieces but Y pieces provide optimum clearance of the other ports Checking...

Страница 21: ...Status LEDs for the 10BASE T ports you have used should be green If they are not check your connections If the 10BASE 2 port is not used and is not terminated the LED should be yellow showing that it...

Страница 22: ...ort has partitioned due to a loop in your network in which case the corresponding Port Status LED will be yellow Examine your connections and remove the loop Each piece of equipment needs only one con...

Страница 23: ...mal switch is set to Normal out Also check that the equipment being connected to the hub is powered on and operating correctly Refer to Figure 9 below to compare the wiring of a straight through and a...

Страница 24: ...e than one path Your hub detects this and partitions isolates one of its ports to break the loop A segment is the length of Ethernet cable connected to a port whether this cable is 10BASE T 10BASE 2 o...

Страница 25: ...screened cables category 3 or category 5 complies with the Class A requirements Refer to Electromagnetic Compatibility on page 38 for conditions of operation Power Weight OfficeConnect Ethernet Hub 4...

Страница 26: ...ds Improving our environmental record on a continual basis End Of Life Statement 3Com processes allow for the recovery reclamation and safe disposal of all end of life electronic components Regulated...

Страница 27: ...ible You can only remove power from the unit by disconnecting the power cord from the outlet This unit operates under SELV Safety Extra Low Voltage conditions according to IEC 950 The conditions are o...

Страница 28: ...durch Herausziehen des Ger tenetzkabels aus der Netzsteckdose unterbrochen werden Der Betrieb dieses Ger ts erfolgt unter den SELV Bedingungen Sicherheitskleinstspannung gem IEC 950 Diese Bedingungen...

Страница 29: ...l appareil hors circuit qu en d branchant son cordon lectrique au niveau de cette prise L appareil fonctionne une tension extr mement basse de s curit qui est conforme la norme CEI 950 Ces conditions...

Страница 30: ...latest networking information on the 3Com Corporation World Wide Web site enter this URL into your Internet browser http www 3com com This service provides access to online support information such as...

Страница 31: ...configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com Support from 3Com If you are unable to obtain assistance from t...

Страница 32: ...61 463 00798 611 2230 0 2 3455 6455 0080 611 261 001 800 611 2000 Europe From anywhere in Europe call 31 0 30 6029900 phone 31 0 30 6029999 fax Europe South Africa and Middle East From the following c...

Страница 33: ...0 13 3266 1230 020 0645 98012 2127 Mexico Peru Puerto Rico Venezuela 01 800 CARE 01 800 2273 AT T 800 666 5065 800 666 5065 AT T 800 666 5065 North America 1 800 876 3266 Country Telephone Number Coun...

Страница 34: ...America 1 408 326 2927 1 408 326 3355 From the following countries you may call the toll free numbers select option 2 and then option 2 Austria Belgium Denmark Finland France Germany Hungary Ireland I...

Страница 35: ...applications program and associated reference materials 3Com makes no warranty or representation that its software products will meet Customer s requirements or work in combination with any hardware o...

Страница 36: ...ort 3Com com index htm and provide your date of purchase product number and serial number 3Com reserves the right to modify or cancel this telephone support offering at any time without advance notice...

Страница 37: ...anties are not allowed to be excluded in their entirety they will be limited to the duration of the applicable written warranty This warranty gives you specific legal rights which may vary depending o...

Страница 38: ...by one or more of the following measures Reorient the receiving antenna Relocate the equipment with respect to the receiver Move the equipment away from the receiver Plug the equipment into a differen...

Страница 39: ...39 Wall mounting screw hole guide 150 mm 5 9 in 3C16700 book Page 39 Tuesday July 13 1999 9 59 AM...

Страница 40: ...Part No DUA 1670 0AAA04 Published June 1999 40 3C16700 book Page 40 Tuesday July 13 1999 9 59 AM...

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