3Com 3CRWE776075 manuale d’uso

3Com ® Unified Gigabit Wir eless PoE Switch 24 Quick Start Guide Kurzanleitung 3CRUS2475 Copyright ® 2006 3Com Corporation. All righ ts reserved. www .3Com.com Part Number 10015246 Rev . AA Published Se p tember 2006[...]

About this Guide This guide is intended for use by th ose responsible for installing and setting up network equipment; consequ ently , it assumes a basic working knowledge of LANs (local area netw orks) and WLANs (wir eless local ar ea networks). Diese Anleitung ist fur die Benutzung durch Netzwerkadministratoren vorgesehen, die fur die Installatio[...]

3 Get the latest documentation and softwar e for your 3Com switch Thank you f or purchasing a 3Co m ® Unified Gigabit W ireless PoE Switch 24. As par t of our commitment to help you get the most ou t of your 3Com network equipment, we offer updated documentation and software on our website. In addition to this Quick Start Guide , a detailed User G[...]

4 Get the latest documentation an d software for your 3Com switch[...]

5 Contents About this Guide 2 Get the latest documentation and softwar e for your 3Com switch 3 1 Introducing the 3Com Unified Gigabit Wireless PoE Switch 24 7 Overview of the Unified Gigabit W ireless PoE Switch 24 9 Unified Switching 9 W ired Featur es 10 Power over Ether net (PoE) Features 10 Wireless Features 10 2 Installing the 3Com Unified Sw[...]

6 4 Pr eparing the Managed Access Points 23 Preparing the 7760 Access Point 24 Preparing the 8760 Access Point 25 Resetting Access Points 26 5 Upgrade your Switch to the Latest Software 27 Loading Software into the Switch 27 Running a New Softwar e Image 28 6 Restoring the Factory Default Settings 29 7 Changing the Password 30 8 Using SFP T ranscei[...]

7 1 Intr oducing the 3Com Unified Gigabit Wir eless PoE Switch 24 Figure 1 Fr ont and Rear Views of the Unified Switch 24 1 & 2 3 5 6 7 8 4 11 9 1 0 Ta b l e 1 Features of the Unified Switch 24 Reference Description 1 10/100/1000 Mbps Network Ports (1–24): These autonegotiating ports determine the speed and duplex mode based on the connected [...]

8 Introducing the 3Com Unified Gigabit Wireles s PoE Switch 24 3 LED Status Select Button: This button sets the function of the Port LED indicators. When the button is in the out position, the port LEDs show the po rt speed (see #2 a bove). Wh en the button is pre ssed in, the port LEDs show the PoE status. 4 SFP Module Slots (21–24): The four Sm[...]

Overview of the Unified Gi gabit Wireless PoE Switch 24 9 WAR NI N G : The Ne twork Ports are shield ed RJ-45 data sock ets. They cannot be used as standard traditi onal telephone sockets, or to connect the unit to a traditional PBX or public telephon e network. Connect only RJ-45 data connectors, network telephony systems, or network telephones to[...]

10 Introducing the 3Com Unified Gigabit Wireles s PoE Switch 24 Wired Featur es The switch has 24 shielded RJ-45, 10/100/1000 Mbps auto-nego tiating ports and four Small Form Factor Plu ggable (SFP) transceiver slots on the front panel. The four SFP ports support fiber Giga bit Ether net short-wave (SX) and long-wave (LX) SFP transceivers in any co[...]

11 2 Installing the 3Com Unified Switch 24 Checking the Package Contents The Unified Switch 24 package includes th e following items: ■ One 3Com Unified Gigabit Wireless PoE Switch 24 unit ■ One power cord ■ Four standard height, self-adhesive rubber pads ■ One mounting kit ■ One warranty flyer and one safety flyer ■ This Quick Start Gu[...]

12 Installing the 3Co m Unified Switch 24 ■ Air flow around the unit and through the vents on the side o f the case is not restricted. 3Com r ecommends that you provide a minimum of 25 mm (1 in.) clearance. ■ The air is as free of dust as possible. ■ T emperature operating limits are not likely to be exceeded. 3Com recomme nds that you instal[...]

Rack-Mount Installation 13 If you are installing the switch in a free-standing stack with other 3Com equipment, arrange the smaller units above the larger ones. Do not have a free-standing stack of more than four un its. Placing Units On T op of Each Other If the switch units are fr ee-standing, up to four units can be placed one on top of the othe[...]

14 Installing the 3Co m Unified Switch 24 Figure 2 Attaching Rack-Mount Har dware Montagesatz Anweisungen Der Switch wird mit zwei Halterungen und vier Schrauben geliefert. Diese werde für den Einbau in einen Baug ruppenträger benutzt. Bei der Montage der Baugruppe beachten Si e die Anweisungen aus “Aufstellen des Switch“. Der Switch ist eine[...]

Supplying Power 15 Supplying Power Ensure that the pow er input to your system is clean and free from sags and surges to avoid unforeseen network outages. Before powering on the switch, verify that the power cabl e is securely connected. CAUTION: The switch has no On/Off swit ch; the only method of connecting or disconnecting main power is by conne[...]

16 Installing the 3Co m Unified Switch 24 Checking for Correct Operation After you power -on the switch, it aut omatically performs a power -on self-test (POST). During the POST , the System LED on the front panel of the switch flashes green. When the POST is complete, the Syst em LED tur ns green. If the System LED turns amber after the POST , it [...]

17 3 Connecting to the 3Com Unified Switch 24 This section describes how to connect to the 3Com ® Unified Switch 24 and interact with the Web-based user interface. T he user interface al lows you to control the operation of the switch and configure its features. Before you begin The following items are r equired before you can connect to you r Uni[...]

18 Connecting to the 3Com Unified Switch 24 CAUTION: Do not co nnect any network cable to the Console port on th e switch. Connect only to the Ethernet ports. 3 Ensure that your computer is on the same su bnet as the sw itch. NOTE: The switch’ s default IP addres s is 169.254.2.100. a If your computer is using static IP addressing, ensure that it[...]

Using the setup wizard 19 5 Use the Next button to access the IP Co nfiguration page an d choose either Static or DHCP addressing. For most installations, 3Com recomme nds that you configure the switch with a static IP address. This makes management simpler and more reliable, as it eliminates the risk of the switch’ s IP address changing. T ake a[...]

20 Connecting to the 3Com Unified Switch 24 CAUTION: When you make co nfiguration changes to the switch, you must select Save Configuration to store your settings to the startup configuration. If you do not select Save Configuration , any modified settings will be lost the next time the switch is restarted. CAUTION: T o protect your switch from una[...]

Activating the Managed Access Points 21 T o prepar e your wir eless network follow these steps: 1 Connect the DHCP server to a port on the Unified Switch 24. Make sure that the DHCP server is on the sa me IP subnet and is u sing the same subnet mask as IP configuration of the switch. 2 Connect the wir eless access points to the switch only after yo[...]

22 Connecting to the 3Com Unified Switch 24[...]

23 4 Pr eparing the Managed Access Points The 3Com ® Unified Switch 24 suppor ts these 3Com access points: ■ 3Com Wi reless 7760 11a/b/g PoE Access Point (3CR WE776075) ■ 3Com Wi reless 8760 Dual Radio 11a/b/g PoE Access Point (3CRWE876075) The AP 7760 and AP 8760 are dual function access points and have two start-up modes: Stand -alone and Ma[...]

24 Preparing the Managed Access Points Preparing the 7760 Access Point If you are not familiar with accessing the 3Com 7760 Web interface, refer to the 77 60 Access Point Quick St art Guide . 1 Log on to the access point Web interface. 2 Check the serial n umber on the b ack of the access point. If the serial number starts with BA/ or higher , a ma[...]

Preparing the 8760 Access Point 25 Preparing the 8760 Access Point If you are not familiar with accessing the 3Com 8760 Web interface, refer to the 8760 Access Point Quick St art Guide . 1 Log on to the access point Web interface. 2 Check the serial n umber on the b ack of the access point. If the serial number starts with BA/ or higher , a managed[...]

26 Preparing the Managed Access Points Managed mode can only be discovered and managed by the 3Com Unified Switch 24 . T o return the access point to the default Stand -alone mode, refer to “Resetting A ccess Points” below . Resetting Access Points AP Recovery T o re cover an access point that wa s inadvertentl y changed to Managed mode, perfor[...]

27 5 Upgrade your Switch to the Latest Softwar e This section descr ibes how to u pgrade your 3Com ® Unified Switch 24 to the latest software. The latest software for your switch can be obtained by visiting www .3Com.com, selecting Support & Downloads then Downloads & Drivers and entering the model numbe r ( 3CRUS2475 ). T o provide enterp[...]

28 Upgrade your Switch to the Latest Software Running a New Software Image This sections describes how to run sof tware that you have uploaded to the switch. T o put the software image into your switch, se e “Loading Software into the Switch” on page 27 . T o run new software, you must set the image to become active after the switch is r eset. [...]

29 6 Restoring the Factory Default Settings CAUTION: Resetting the switch to factor y defaults will erase all your settings. Y ou will need to reconfigure all settings. T o re set the switch to factory defaults: 1 Unplug the power cord fr om the back of the unit. 2 Press and hold the Reset button on the back of the switch. 3 While still pr essing t[...]

30 Changing the Password 7 Changing the Passwor d T o protect your 3Com ® Unified Switch 24 fr om unauthor ized access, you should change the default password as soon as possible. T o change the password: 1 Log onto the switch. ■ The default user name is admin . ■ The defaul t password is bl ank (no entry). 2 Select Administration -> Authen[...]

31 8 Using SFP T ransceivers This sections des cribes how to insert an d remove an SFP transceiver from an SFP slot. SFP transceivers are hot-insertabl e and hot-swappab le. Y ou can remove them from and insert them into any SFP port without having to power -off the switch. Approved SFP T ransceivers The following list of approved SFP transcei vers[...]

32 Using SFP Transceivers Figure 3 Inserting the SFP T ransceiver 3 Check the SFP Module Status LEDs on the front of the switch. The corresponding LED will light to indicate the SFP module is present. 4 Remove the plastic protective cover , if fitted. 5 Connect the fiber cable. 6 The transceiver connects to the ne twork using a duplex LC connector [...]

33 9 T r oubleshooting For complete troubleshooting information please refer to your User' s Guide or visit 3Com’ s World Wide Web site: http://www .3Com.com. Here ar e some common pr oblems that can occur . Forgotten Password If you forget the password to the Web interface, you will need to reset the switch to factory defaults. See “Resto[...]

34 Troubleshooting The Port Status LED is on, but network performance is poor There may be a full-duplex / half-duplex mismat ch between t he switch and a connected device. Ensure that the connected d evice has either: ■ Auto-negotiation enabled, or ■ The ports are configur ed for half-duplex operation Browser cannot find the Unified Switch 24 [...]

35 10 T echnical Information Related Standards The 3Com ® Unified Gigabit W ireless PoE Switch 24 has been designed to the following standards: Envir onmental Function IEEE 802.3 (Ethernet, 10Base-T), IEEE 802.3u (Fast Ethernet, 100Base-TX), IEEE 802.3ab (Gigabit Ethernet, 1000Base-T) and IEEE 802.3z (Gigab it Ethernet, 1000Base-X), IEEE 802.3x (F[...]

36 Technical Information Physical Electrical Width 44.0 cm (17.3 in.) Length 41.5 cm (16.3 in.) Height 4.4 cm (1.75 in.) or 1U. Weight 5.9 kg (13.0 lb) Mounting Free-standing, or 19 in. rack-mo unted using the supplied mo unting kit Power Inlet IEC 320 AC Line Frequency 50/60 Hz (±3 Hz) Input Voltage 100–240 Vac (auto range) Current Rati ng 8 Am[...]

37 11 Obtaining Support for your 3Com Pr oduct 3Com offers pr oduct registration, ca se management, and r epair services through eSuppor t.3Com.com . Y ou must have a user name and password to access these services, which are described in this appendix. Register Y our Product to Gain Service Benefits T o take advantage of warranty and ot her servic[...]

38 Obtaining Support for your 3Com Product Purchase Extended W arranty and Professional Services T o enhanc e respon se times or exte nd your warrant y benefits, you can purchase value-added services such as 24x7 telephone technical support, software upgrades, on-site assistance, or advanced har dware replacement. Experienced enginee rs are availab[...]

Contact Us 39 T elephone T echnical Support and Repair T o obtain telephone support as part of your warranty and other service benefits, you must first register your pr oduct at: http://eSupport.3Com.com When you contact 3Com for assistance, please have the following information ready: ■ Product model name, part number , and serial number ■ A l[...]

40 Obtaining Support for your 3Com Product From the following countries, call the appropriate number: Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy 0800 297 468 0800 71429 800 17309 0800 113153 0800 917959 0800 182 1502 06800 12813 1 800 553 117 180 945 3794 800 879489 Luxembourg Netherlands Norway Poland Portugal Sout[...]