Page 2 - About this Guide
About this Guide This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (local area networks) and WLANs (wireless local area networks). Diese Anleitung ist fur die Benutzung durch Netzwerkadminis...
Page 5 - Contents
5 Contents About this Guide 2 Get the latest documentation and software for your 3Com switch 3 1 Introducing the 3Com Unified Gigabit Wireless PoE Switch 24 7 Overview of the Unified Gigabit Wireless PoE Switch 24 9 Unified Switching 9Wired Features 10Power over Ethernet (PoE) Features 10Wireless Fe...
Page 7 - Introducing the
7 1 Introducing the 3Com Unified Gigabit Wireless PoE Switch 24 Figure 1 Front and Rear Views of the Unified Switch 24 1 & 2 3 5 6 7 8 4 11 9 1 0 Table 1 Features of the Unified Switch 24 Reference Description 1 10/100/1000 Mbps Network Ports (1–24): These autonegotiating ports determine the spe...
Page 9 - The Network Ports are shielded RJ-45 data sockets. They; Unified Switching; unified switch
Overview of the Unified Gigabit Wireless PoE Switch 24 9 WARNING: The Network Ports are shielded RJ-45 data sockets. They cannot be used as standard traditional telephone sockets, or to connect the unit to a traditional PBX or public telephone network. Connect only RJ-45 data connectors, network tel...
Page 10 - Wired Features
10 Introducing the 3Com Unified Gigabit Wireless PoE Switch 24 Wired Features The switch has 24 shielded RJ-45, 10/100/1000 Mbps auto-negotiating ports and four Small Form Factor Pluggable (SFP) transceiver slots on the front panel. The four SFP ports support fiber Gigabit Ethernet short-wave (SX) a...
Page 12 - The air is as free of dust as possible.
12 Installing the 3Com Unified Switch 24 ■ Air flow around the unit and through the vents on the side of the case is not restricted. 3Com recommends that you provide a minimum of 25 mm (1 in.) clearance. ■ The air is as free of dust as possible. ■ Temperature operating limits are not likely to be ex...
Page 13 - Placing Units On Top; Disconnect all cables from the unit before continuing.
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 units. Placing Units On Top of Each Other If the switch units are free-standing, up to ...
Page 14 - Entfernen Sie alle Kabel, bevor Sie fortfahren. Entfernen Sie
14 Installing the 3Com Unified Switch 24 Figure 2 Attaching Rack-Mount Hardware Montagesatz Anweisungen Der Switch wird mit zwei Halterungen und vier Schrauben geliefert. Diese werde für den Einbau in einen Baugruppenträger benutzt. Bei der Montage der Baugruppe beachten Sie die Anweisungen aus “Auf...
Page 15 - Supplying Power; The switch has no On/Off switch the only method of; Stromversorgung; Verbinden Sie den Switch nur mit dem mitgelieferten
Supplying Power 15 Supplying Power Ensure that the power 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 cable is securely connected. CAUTION: The switch has no On/Off switch; the only method of con...
Page 17 - Before you begin
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. The user interface allows you to control the operation of the switch and configure its features. Before you begin The following items ar...
Page 18 - Do not connect any network cable to the Console port on the
18 Connecting to the 3Com Unified Switch 24 CAUTION: Do not connect any network cable to the Console port on the switch. Connect only to the Ethernet ports. 3 Ensure that your computer is on the same subnet as the switch. NOTE: The switch’s default IP address is 169.254.2.100. a If your computer is ...
Page 19 - User Guide
Using the setup wizard 19 5 Use the Next button to access the IP Configuration page and choose either Static or DHCP addressing. For most installations, 3Com recommends that you configure the switch with a static IP address. This makes management simpler and more reliable, as it eliminates the risk ...
Page 20 - Save Configuration
20 Connecting to the 3Com Unified Switch 24 CAUTION: When you make configuration 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 res...
Page 21 - Device Summary; When an access point is activated on a unified switch, the access
Activating the Managed Access Points 21 To prepare your wireless 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 same IP subnet and is using the same subnet mask as IP configuration of the switch. 2 Connect the wirele...
Page 23 - Managed
23 4 Preparing the Managed Access Points The 3Com ® Unified Switch 24 supports these 3Com access points: ■ 3Com Wireless 7760 11a/b/g PoE Access Point (3CRWE776075) ■ 3Com Wireless 8760 Dual Radio 11a/b/g PoE Access Point (3CRWE876075) The AP 7760 and AP 8760 are dual function access points and have...
Page 24 - 0 Access Point Quick Start Guide
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 Start Guide . 1 Log on to the access point Web interface. 2 Check the serial number on the back of the access point. If the...
Page 25 - 760 Access Point Quick Start Guide
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 Start Guide . 1 Log on to the access point Web interface. 2 Check the serial number on the back of the access point. If the seri...
Page 26 - . To return the access point to the default Stand-alone; AP Recovery; Short Reset
26 Preparing the Managed Access Points Managed mode can only be discovered and managed by the 3Com Unified Switch 24 . To return the access point to the default Stand-alone mode, refer to “Resetting Access Points” below. Resetting Access Points AP Recovery To recover an access point that was inadver...
Page 30 - Changing the Password; admin
30 Changing the Password 7 Changing the Password To protect your 3Com ® Unified Switch 24 from unauthorized access, you should change the default password as soon as possible. To change the password: 1 Log onto the switch. ■ The default username is admin . ■ The default password is blank (no entry)....
Page 31 - Using SFP Transceivers; SFP transceivers are keyed and can be properly inserted only
31 8 Using SFP Transceivers This sections describes how to insert and remove an SFP transceiver from an SFP slot. SFP transceivers are hot-insertable and hot-swappable. You can remove them from and insert them into any SFP port without having to power-off the switch. Approved SFP Transceivers The fo...
Page 32 - Remove the plastic protective cover, if fitted.
32 Using SFP Transceivers Figure 3 Inserting the SFP Transceiver 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 conne...
Page 33 - Troubleshooting; Guide; Forgotten Password
33 9 Troubleshooting For complete troubleshooting information please refer to your User's Guide or visit 3Com’s World Wide Web site: http://www.3Com.com. Here are some common problems that can occur. Forgotten Password If you forget the password to the Web interface, you will need to reset the switc...
Page 34 - The Port Status LED is on, but network performance is poor
34 Troubleshooting The Port Status LED is on, but network performance is poor There may be a full-duplex / half-duplex mismatch between the switch and a connected device. Ensure that the connected device has either: ■ Auto-negotiation enabled, or ■ The ports are configured for half-duplex operation ...
Page 35 - Technical Information; Related Standards; The 3Com; Environmental
35 10 Technical Information Related Standards The 3Com ® Unified Gigabit Wireless PoE Switch 24 has been designed to the following standards: Environmental 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 (...
Page 36 - Physical
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-mounted using the supplied mounting kit Power Inlet IEC 320 AC Line Frequency 50/60 Hz (±3 Hz) Input Voltage ...
Page 37 - Com Knowledgebase —; Helps you to troubleshoot 3Com
37 11 Obtaining Support for your 3Com Product 3Com offers product registration, case management, and repair services through eSupport.3Com.com . You must have a user name and password to access these services, which are described in this appendix. Register Your Product to Gain Service Benefits To ta...
Page 38 - Contact Us
38 Obtaining Support for your 3Com Product Purchase Extended Warranty and Professional Services To enhance response times or extend your warranty benefits, you can purchase value-added services such as 24x7 telephone technical support, software upgrades, on-site assistance, or advanced hardware repl...
Page 39 - Telephone Technical; Product model name, part number, and serial number
Contact Us 39 Telephone Technical Support and Repair To obtain telephone support as part of your warranty and other service benefits, you must first register your product at: http://eSupport.3Com.com When you contact 3Com for assistance, please have the following information ready: ■ Product model n...
