Instruction/ maintenance manual of the product Unified Gigabit Wireless PoE Switch 24 3CRWE776075 3Com
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3Com ® Unified Gigabit Wir eless PoE Switch 24 Quick Start Guide Kurzanleitung 3CRUS2475 Copyright ® 2006 3Com Corporation. All rights reserved. www .
About this Guide This guide is inten ded for use by those responsible for installing and setting up network equipment; con sequently , it assumes a basic working knowledge of LANs (local area netw orks) and WLANs (wir eless local ar ea networks).
3 Get the latest documentation and softwar e for your 3Com switch Thank yo u for purchasing a 3 Com ® Unified Gigabit W ireless PoE Switch 24. As p art of our commitment to help you get t he most out of your 3Com network equipment, we offer updated document ation and software on our website.
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 ireles.
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 Sof.
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 Re.
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.
Overview of the Unified Gi gabit Wireless PoE Switch 24 9 WAR N IN G : The Network Po rts are shielded RJ-45 data sockets. Th ey cannot be u sed as stand ard tradit i onal telephone socket s, or to con nect the unit to a traditional PBX or public telep hone network.
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 aut o-negotiating ports and four Small Form Factor Plu ggable (SFP) transceiver slots on the front panel.
11 2 Installing the 3Com Unified Switch 24 Checking the Package Contents The Unified Switch 24 package inclu des the following items: ■ One 3Com Unified Gigabit Wireless PoE Switch 24 unit ■ One p.
12 Installing the 3Com Unified Switch 2 4 ■ Air flow around the unit and through the vents on the sid e of the case is not restricted. 3Com r ecommends that you provide a minimum of 25 mm (1 in.) cleara nce. ■ The air is as free of dust as possible.
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.
14 Installing the 3Com Unified Switch 2 4 Figure 2 Attaching Rack-Mount Har dwar e Montagesatz Anweisungen Der Switch wird mit zwei Halterungen und vier Schrauben geliefert. Diese werde für den Einbau in einen B augruppenträger benu tzt. Bei der Montage der Baugruppe beach ten Si e die Anweisungen aus “Aufstellen des Switch“.
Supplyin g Power 15 Supplying Power Ensur e that the pow er input to your system is clean and free from sags and surges to avoid unforeseen network outages.
16 Installing the 3Com Unified Switch 2 4 Checking for Correct Operation After you power -on the switch , it automatically 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.
17 3 Connecting to the 3Com Unified Switch 24 This section describes how to connect to t he 3Com ® Unified Switch 24 and interact with the Web-based user interface. T he user interfa ce allows you to control the operation of the switch and configure its features.
18 Connecting to the 3Com Unified Switch 24 CAUTION: Do not co nnect any network cable to the Console por t on the switch. Connect only to the Ether net ports. 3 Ensure that your computer is on the same subnet as the switch . NOTE: The switch’ s default IP add ress is 169.
Using the setup wizard 19 5 Use the Next button to access the IP Co nfiguration pag e and choose either Static or DHCP addressing. For most installations, 3Com re comme 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.
20 Connecting to the 3Com Unified Switch 24 CAUTION: When you make co nfiguration chan ges 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 i s restarted.
Activating the Managed Access Points 21 T o pr epare 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 th e same IP subnet and is using the same subnet mask as IP configuration of the switch.
22 Connecting to the 3Com Unified Switch 24.
23 4 Pr eparing the Managed Access Points The 3Com ® Unified Switch 24 supports these 3Com access points: ■ 3Com W ireless 7760 11a/b/g Po E Access Point (3CRWE776075) ■ 3Com W ireless 8760 Dual .
24 Preparing the Managed Access Points Preparing the 7760 Access Point If you are not familiar with accessing the 3Com 7760 W eb interface, refer to the 77 60 Access Point Quick St art Guide . 1 Log on to the access point Web interface. 2 Check the seri al number on the back of the access point.
Preparing the 8760 Access Point 25 Preparing the 8760 Access Point If you are not familiar with accessing the 3Com 8760 W eb interface, refer to the 8760 Access Point Quick St art Guide . 1 Log on to the access point Web interface. 2 Check the seri al number on the back of the access point.
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 St and-alone mode, refer to “Resetting Access Point s” below .
27 5 Upgrade your Switch to the Latest Softwar e This section describes how to upgrade 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 mode l number ( 3CRUS2475 ).
28 Upgrade your Switch to the Latest Softwa re Running a New Software Image This sections describes ho w to run software that you have uploaded to the switch. T o put the software image into your switch, see “Loading Software into the Switch” on page 27 .
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 r eset the switch to factory defaults: 1 Unplug the power cord fr om the back of the unit.
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 defau lt user name is admin .
31 8 Using SFP T ransceivers This sections des cribes how to inser t and remove an SFP transceiver from an SFP slot. SFP transceive rs are hot-insertab le and hot-swapp able. Y ou can remove them from and insert them in to any SFP port without having t o power -off the switch.
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.
33 9 T r oubleshooting For complete troubleshooting information please refer to your Us er'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 Passwor d If you forget the pas sword to the W eb interface, you will need to r eset the switch to factory defaults.
34 Troubleshooting The Port Status LED is on, but network performance is poor There may be a full-du plex / half-du plex mismatch between the switch and a connected device.
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.
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.
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.
38 Obtaining Support for your 3Com Product Purchase Extended W arranty and Professional Services T o enhanc e resp onse times or ext end your warra nty benefits, y ou can purchase value-added services such as 24x7 telephone technical support, software upgrades, on-site assistance, or advanced har dware replacement.
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.
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 7142.
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If you already are a holder of 3Com Unified Gigabit Wireless PoE Switch 24 3CRWE776075, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime 3Com Unified Gigabit Wireless PoE Switch 24 3CRWE776075.
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