Black Box Modular Switches manuale d’uso

Black Box Modular Switches Installation and User Guide (8/99) i April 1999 LE14XXA Modular Switches Customer Call our Technical Support Specialists to discuss your application. Support For 24 - hour technical support: Call (724) 746 - 5500 or Fax: (724) 746 - 0746 Information To order: Call (724) 746 - 5500 7:00 A.M. to 8:00 P.M. EST Mail order: Bl[...]

Black Box Modular Switches Installation and User Guide (8/99) ii Black Box  Modular Switches Installation and User Guide Trademarks UL is a registered trademark of Underwriters Laboratories Important: The LE14XXA Modular Switches contain no user - serviceable parts. Attempted service by unauthorized personnel shall render any and all warranties [...]

Black Box Modular Switches Installation and User Guide (8/99) iii FCC STATEMENT FEDERAL COMMUNICATIONS COMMISSION AND CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manu[...]

Black Box Modular Switches Installation and User Guide (8/99) iv NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y ope ración deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberan ser guardadas para [...]

Black Box Modular Switches Installation and User Guide (8/99) v TABLE OF CONTENTS PAGE 1. SPECIFICATIONS ......................................................................................................... 1 1.1 Technical Specifications ........................................................................................1 1.2 Model Infor ma[...]

Black Box Modular Switches Installation and User Guide (8/99) vi 5.2 Product Description ...........................................................................................34 5.2.1 LE1428C, 100Mb multi - mode FX - ST, “twist lock” connector ...............35 5.2.1a LE1424C, 10 Mb multi - mode FL - ST, “twist - lock” connector. .....[...]

Black Box Modular Switch Installation and User Guide (08/99) 1 1. SPECIFICATIONS 1.1 Technical Specifications Performance Aggregate Filtering Rate: 2, 380,800 frames/sec for 16 100Mbps ports (for LE1416A) (all ports are wire speed) 1,190,400 frames/sec for 8 100Mbps ports (for LE1401A & LE1408A) Aggregate Forwarding Rate: (for Modular Switch Fa[...]

Black Box Modular Switches Installation and User Guide (8/99) 2 Fiber Port, MTRJ - type (plug - in):Fiber optic multi - mode, 100BASE - FX Fiber Port, VF - 45 type (plug - in): Fiber optic multi - mode, 100BASE - FX Fiber Port, ST - type (twist - lock): Fiber optic multi - mode, 10ASE - FL Fiber Single - mode connector types: Fiber Port, SC - type:[...]

Black Box Modular Switches Installation and User Guide (8/99) 3 For Dual Source and Redundant DC supply options, see Append ices For optional 23” Telco rack - mount brackets, order Model # RMB - 23W Agency Approvals UL listed (UL1950), cUL, CE Emissions meet FCC Part 15 Class A Warranty Three years, return to factory Made in USA[...]

Black Box Modular Switches Installation and User Guide (8/99) 4 1.2 Model Information Black Box Modular Switches MODEL DESCRIPTION LE1401A 8 - port 10/100 Switch, holds up to two 4 - port Modules with 4 switched ports each. Shelf or table - top mounting. For mixed - media flexibility, combinations of RJ - 45 and various fiber po rt connector types,[...]

Black Box Modular Switches Installation and User Guide (8/99) 5 2. Introduction 2.1 Inspecting the Package and Product Examine the shipping container fo r obvious damage prior to installing this product; notify the carrier of any damage which you believe occurred during shipment or delivery. Inspect the contents of this package for any signs of dam[...]

Black Box Modular Switches Installation and User Guide (8/99) 6 2.2 Product Description , 8 - port and 16 - port Modular Switches Black Box LE14XXA series Modular Switches boost the performance of large Ethernet LANs, and have the flexibility of both fiber and twisted - pair switched ports. Their “mixed - media” capabi lity provides for a varie[...]

Black Box Modular Switches Installation and User Guide (8/99) 7 Switches with two or four 4 - port slots in the front, i.e., with a capacity of 8 or 16 switched ports. The LE1408A and LE1416A ra ck - mount units are typically used in larger network wiring centers. Figure 2.2.1a: Front view, 8 - port LE1401A table - top, 8 - port LE1408A and 16 - po[...]

Black Box Modular Switches Installation and User Guide (8/99) 8 2.2.2 4 - port modules, 100Mb fiber Fig.2.2.2 Fiber 4 - Port Modules, LE1420C, LE1419 C LE1423C LE1422C In a fiber 4 - port module, all of the fiber ports are of the same speed, the same multi - or single - mode, and the same connector type. Multi - mode 100Mbps models are available wi[...]

Black Box Modular Switches Installation and User Guide (8/99) 9 2.2.4 4 - Port Module, RJ - 45 (copper ) The Black Box LE14XXA - Series copper port module, model LE1425C, provides four 10/100Mb switched. RJ - 45 ports. The 10/100Mb switched ports are independently N - way auto - negotiating LE1425C for operation at 10 or 100Mb speed in full - or ha[...]

Black Box Modular Switches Installation and User Guide (8/99) 10 The RJ - 45 ports run at 10/100Mbps with N - way auto - negotiation capabilit y, whereas the fiber port runs at 100Mbps with half - or full - duplex capability manually selected. The default condition is full - duplex. Internal jumpers settings allow technicians to set the 100Mb fiber[...]

Black Box Modular Switches Installation and User Guide (8/99) 11 LE14XXA - Series Switches are constantly adapting internally to provide maximum network performance with the least dropped packets. When the Switch detects that its free buffer queue space is low, the Switch sends industry standard (full - duplex only) PAUSE packets out to the devices[...]

Black Box Modular Switches Installation and User Guide (8/99) 12 2.3 Features and Benefits n 100Mb switching services for large, high performance Ethernet LANs LE14XXA - Series Switches provide Fast Ethernet switching on all ports. They perform high speed filter/forward operations on the traffic, giving each port’s segment a full 100Mb (or 10 Mb)[...]

Black Box Modular Switches Installation and User Guide (8/99) 13 . 2.4 Applications Black Box LE14XXA - Series Modular Switches offer high performance and flexibility, and are easily used in a variety of applications including client/se rver computing, performance upgrades of departmental networks, and collapsed backbone applications. The Dual - Sp[...]

Black Box Modular Switches Installation and User Guide (8/99) 14 Example 2 : 8 - port LE1408A In another application, a Switch is needed to provide a Fast Ethernet backbone. The backbone consists of four high - speed LAN segments, each operating ov er 100MB full - duplex fiber lines. In addition to interconnecting the fiber backbone segments in the[...]

Black Box Modular Switches Installation and User Guide (8/99) 15 Example 3 : 16 - port LE1416A In another situation similar to Example 2 abov e, a larger central Switch is needed to provide for a 6 - segment 100Mb fiber Fast Ethernet backbone, and switched copper support for 4 high speed local servers. In addition, the router and two dual - speed h[...]

Black Box Modular Switches Installation and User Guide (8/99) 16 3.0 Installation Before installing the equipment, it is necessary to take the following precautions: 1.) If the equipment is mounted in an enclosed or multiple rack assembly, the environmental temperature around the equipment must be less than or equal to 50 0 C. 2.) If the equipment [...]

Black Box Modular Switches Installation and User Guide (8/99) 17 3.2 Connecting Ethernet Media The Black - Box LE14XXA - Series Fiber Switches are specifica lly designed to support all standard Ethernet media types within a single Switch unit. This is accomplished by using a family of 4 - port Modules (4PMs) which can be individually selected and c[...]

Black Box Modular Switches Installation and User Guide (8/99) 18 3.2.2 Connecting F iber Optic SC - type , "Snap - In" The following procedure applies to installations using a 4PM with SC - type fiber connectors, i.e., using LE1419C, LE1421C single - mode. When connecting fiber media to SC connectors, simply snap on the two square male co[...]

Black Box Modular Switches Installation and User Guide (8/99) 19 1. Using standard twisted pair media, insert either end of the cable with an RJ - 45 plug into the RJ - 45 connector of the port. Note that, even though the connector is shielded, either unshielded or shielded cables and wiring may be used. 2. Connect the other end of the ca ble to th[...]

Black Box Modular Switches Installation and User Guide (8/99) 20 view and easy to read. Rack - mount installation requires special rack - mounted brackets and screws (included with each LE1408A and LE1416A unit). The brackets attach to the front sides of the Switch, which is then fastened into a standard 19” rack. 3.4 RJ - 4 5 ports, internal jum[...]

Black Box Modular Switches Installation and User Guide (8/99) 21 Therefore, the default setting of auto - negotiation (copper ports) is generally desirable because it i s widely used and allows for the connection of various devices without re - configuration. Under certain conditions,(where the connected device is full duplex and does not support A[...]

Black Box Modular Switches Installation and User Guide (8/99) 22 fixed, even if the attached device may or may not support full - duplex. This is desirable when there are unknown devices presently or potentially connected, which will not operate correctly with full - duplex. E xamples include hubs which support only half - duplex by default. Theref[...]

Black Box Modular Switches Installation and User Guide (8/99) 23 Series Combo - 4ports to be fixed, even if the attached device may or may not support full - duplex. This is desirable when there are unknown devices presently or potentially connected, which will not operate correctly with full - duplex. Examples includ e hubs that support only half [...]

Black Box Modular Switches Installation and User Guide (8/99) 24 Figure 3.7 10Mbps Fiber ports internal jumper settings. Note: Be certain that the main power is disconnected before opening the unit or changing any internal jumper settings Therefo re, the default setting of half - duplex ( fiber ports) is generally desirable because it is widely use[...]

Black Box Modular Switches Installation and User Guide (8/99) 25 See the Appendices of this manual for more details. Use an RFQ for other variations.[...]

Black Box Modular Switches Installation and User Guide (8/99) 26 3.9 4 Port Module (4PM) Installation The LE14XXA - Series Modular Switches are normally rece ived from the factory with all required 4PM modules installed. There may be situations where 4PM cards need to be added or replaced. In cases where additional 4PM cards are needed, the face pl[...]

Black Box Modular Switches Installation and User Guide (8/99) 27 Looking down into the LE14XXA - Series unit, notice that there are individual 4PM connector sockets along with two stand - offs for each 4PM card position. There are four 4PM sl ots located on the front of the LE1416Amodel, whereas LE1401A and LE1408A has two 4PM slots in the front. ([...]

Black Box Modular Switches Installation and User Guide (8/99) 28 3.9.2 Installing 4PM Cards in the LE1 4XXA - Series Up to four front - mounted 4PM cards may be installed in one LE1416A Fiber Hub unit. Follow these steps to install a 4PM. Step 1. Remove top chassis cover. See procedure in Section 3.9 .1 above. Step 2. Screw down tightly the two 7/1[...]

Black Box Modular Switches Installation and User Guide (8/99) 29 Figure 3.9.2a: Inserting 4PM Cards into a LE1416A NOTE: All 4PM slots need not be filled in order for the LE14XXA - Series unit to be operational. When leaving 4PM slots empty, always use a face plate ( 4P M - FP) to cover the slot opening in the front panel. This will maintain proper[...]

Black Box Modular Switches Installation and User Guide (8/99) 30 On the bottom - front of the unit there are two retaining screws for each 4PM card and face plate slot. These screws are used to secure a 4PM card in position (see F igure 3.9.3a). Remove the front screws first and then screw mounted on the rear - top of the 4PM to be removed. Figure [...]

Black Box Modular Switches Installation and User Guide (8/99) 31 4.0 OPERATION This chapter describes the functions and operation of the LE14XXA - Series. 4.1 Switching Functionality A LE14XXA - Series provides switched connectivity at Ethernet wire - speed among all of its ports. The LE14XXA - Series supports10/100Mbs for copper media and 10 or 10[...]

Black Box Modular Switches Installation and User Guide (8/99) 32 nodes are added or removed or moved from one segment to another, the 4 - Port Switch automatically keeps up with node locations. An address - aging algorith m causes least - used addresses to fall out in favor of new frequently - used addresses. To reset the address buffer, cycle powe[...]

Black Box Modular Switches Installation and User Guide (8/99) 33 One frequently - used application for the 4 - Port - Switch copper ports is to connect one of them using a fiber media converter t o another Switch in the network backbone, or to some other remote 100Mb device. In this case, it is desirable to operate the fiber link at 100Mb speed, an[...]

Black Box Modular Switches Installation and User Guide (8/99) 34 • NOTE – some NIC cards only auto - negotiate when the computer system that they are in is powered up. These are exceptions to the “negotiate at LINK – enabled” rule above, but may be occasionally encountered. When operating in 100Mb half - duplex mode, cable distances and h[...]

Black Box Modular Switches Installation and User Guide (8/99) 35 reduce the buffer space used. When the available free - buffer queue increases , the Switch will send a “RESUME" packet to indicate the transmitter to start sending the packets. Of course, the transmitting device must also support the 802.3x flow control standard in order to co[...]

Black Box Modular Switches Installation and User Guide (8/99) 36 LE1422C 100Mb FX Multi - mode 2 (0.4) 1300 62.5/12 5 - 14 - 31 15 5 16 5.7 * Not e: The use of either multi - mode or single - mode fiber to operate at 100Mbps speed over long distances (i.e., in excess of approx. 400 meters) can be achieved only if the following factors ar e both app[...]

Black Box Modular Switches Installation and User Guide (8/99) 37 An important feature of the LE14XXA - Series is the use of 4 - Port Modules (4PMs) and for flexible mixed - media connectivity to RJ - 45 and fiber media use of Combo 4 - port module. Since the LE14XXA - Series have dual - speed capability for copper - port, the front port slots are d[...]

Black Box Modular Switches Installation and User Guide (8/99) 38 front of the module identifies it as “10 FL” to avoid confusion with other similar - looking 100Mb fiber QPMs. 5.2.2 LE1419C 100Mbps multi - mode FX - SC - 4 - port type, “ snap - in” connector The LE1419C is also a multi - mode 100Mbps fiber optic transceiver module, similar [...]

Black Box Modular Switches Installation and User Guide (8/99) 39 5.2.4 LE1422C, 100Mb multi - mode FX 4 - Port, MTRJ small - form - factor connector LE1422C is a multi - mode fiber optic 4 - port module equipped with a small - form - factor MTRJ - type connector. It looks almost like an RJ - 45 port, but it is black in color. T he MT - RJ’s small[...]

Black Box Modular Switches Installation and User Guide (8/99) 40 LE1423C is a 4 - port multi - mode fiber FX “small - form - factor” VF - 45 connector used primarily in 100Mbps fiber - to - the - desktop links. Its size is similar to the MT - R J port, but the VF - 45 shell is slightly larger. When not in use, its appearance is distinctive beca[...]

Black Box Modular Switches Installation and User Guide (8/99) 41 connection to another hub or switch typically.) When used for segments going to workstations and other user node device connections, the MDI - X push - button should be in the OUT (=) position. The LE1425C will support 10BASE - T unshielded twisted pair wiring (UTP) environments with [...]

Black Box Modular Switches Installation and User Guide (8/99) 42 Each 3+1 combo 4 - port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that indicates proper connectivity with the remote device when lit, a FDX/HDX LED to indicate full - duplex mode when lit (or half - duplex when off). In addition, the RJ - 45 ports ha[...]

Black Box Modular Switches Installation and User Guide (8/99) 43 6.0 TROUBLESHOOTING If problems should develop during installation or operation, follow the suggestions below prior to calling Technical Support for help. If you are uns ure of any procedure described in this chapter, or if the LE14XXA is not operating as expected, do not attempt to r[...]

Black Box Modular Switches Installation and User Guide (8/99) 44 4. If the problem is isolated to a network device other than the LE14XXA - Series Modular Switch, replace the problem device with a known good device. Verify whether or not the problem is corr ected. If it is not, go to step 5. If the problem is corrected, the Modular Switches and its[...]

Black Box Modular Switches Installation and User Guide (8/99) 45 Black Box Corporation The World’s Source for Connectiv ity  Copyright 1999. Black Box Corporation. All rights reserved. 1000 Park Drive · Lawre nce, PA 15055 · (724) 746 - 5500 · Fax (724) 746 - 0746[...]