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Summary of Contents for Cabletron Systems 24
- Page 1 STH-22/-24/-42/-44 STACKABLE TOKEN RING HUB USER’S GUIDE CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005...
- Page 2 Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
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Page 3: Fcc Notice
NOTICE FCC Notice This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. -
Page 4: Program License Agreement
CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. - Page 5 NOTICE EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY EXCLUSION OF WARRANTY. Cabletron in writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including Its documentation and media). CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS,...
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Page 6: United States Government Restricted Rights
Regulations, Section 52.227-7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35 Industrial Way. Rochester, New Hampshire 03866... -
Page 7: Table Of Contents
CHAPTER 1 INTRODUCTION 1.1 Using This Manual......1-1 1.2 STH Overview ....... . . 1-1 1.2.1 LANVIEW LEDs . - Page 8 CONTENTS CHAPTER 3 INSTALLATION 3.1 Unpacking the STH ......3-1 3.2 Installing the STH ......3-1 3.2.1 Rack Mount or Wall Mount Hardware.
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Page 9: Chapter 1 Introduction
The STH is a non-intelligent hub which provides expanded connectivity for Cabletron Systems’ STHi intelligent hubs and Cabletron Systems MicroMMAC intelligent hubs. Each STH added to an intelligent hub‘s managed stack increases the LAN’s connectivity by 12 or 24 Trunk Page 1-1... - Page 10 TOKEN RING HUB with LANVIEW RESERVED STACK Figure 1-1. Front and Back Views of the STH-24 Up to four STH hubs can be linked to the same intelligent hub, bringing the total direct connectivity potential to 120 managed TCU ports in the stack.
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Page 11: Lanview Leds
1.2.2 TCU Ports Each STH, depending on the STH model (see Table 1-1. ), is equipped with 12 or 24 TCU ports, each fitted with a female RJ45 modular connector jack to support the attachment of either STP (shielded twisted pair) or UTP (unshielded twisted pair) cabling with RJ45 connector plugs. -
Page 12: Automatic Beacon Recovery Process
The result is enhanced signal integrity and extended maximum station lobe cable distances. Daughter Board Upgrade Kit Both the STH-22 and the STH-42 can be upgraded to 24 ports using the following daughter board upgrade kits: •... -
Page 13: Related Manuals
Related Manuals By default, each of the STH hub’s TCU ports is configured to its STN (station) setting to support concentrator lobe connections to stations. Through Local Management, any TCU port may be reconfigured to its RO (Ring Out) setting to support connections to passive MAU (Multi- Station Access Unit) workgroups. - Page 14 Related Manuals DAISY-CHAIN MAU CONFIGURATION When MAUs are daisy-chained, they are connected as single collective entity. The entire chain must be bypassed to isolate the hub from a single beaconing station. All stations lose connection if beaconing occurs on any station. Ring Ring Hub with...
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Page 15: Getting Help
1.4 Getting Help If you need additional support related to the Cabletron Systems STH, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone: By CompuServe By Internet mail: (603) 332-9400 Monday-Friday;... -
Page 16: Chapter 2 Requirements & Specifications
Maximum Number of Stations on a Ring The maximum stack composed of four 24-port STH hubs and one 24-port intelligent hub offers a total of 120 TCU ports, but the number of ports available on the LAN may be increased by the use of passive Multi- station Access Units (MAUs) (refer to Section 1.2.4, Support for... - Page 17 Token Ring network. • For single telecommunications closet rings, lobe lengths should not exceed 100 meters of 22 to 24 AWG wire from the attaching device and the TCU port. Page 2-2...
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Page 18: Cable Specifications
2.3 UTP Cabling Specifications Both UTP supporting modules (STH-22 / 24) support D-inside wiring (DIW) voice grade Unshielded Twisted Pair (UTP) cable as described below and in EIA SP-1907B. All category 5, all category 4, and some (see Section 2.3.2, UTP Lobe Lengths, on page 5) category 3 UTP cables... -
Page 19: Utp Cable Categories
*below Token Ring performance requirement of Category 3 consists of (usually) four Unshielded Twisted Pairs of 24 AWG solid wire for data or voice communication. (IBM Type 3 is coincidentally the same as UTP Category 3.) It is typically used to wire cable runs within the walls of buildings. -
Page 20: Utp Lobe Lengths
UTP cabling to any non-Token Ring network conductors (telephone, etc.) or ground. If in doubt, test wiring before using. 2.3.2 UTP Lobe Lengths The physical length of the cable connecting a station to a TCU port on the concentrator is referred to as the lobe length. The maximum lobe length attainable with the concentrator, under ideal conditions, is shown in Table 2-2. -
Page 21: Stp Cable Categories
Used for the longest cable runs within the walls of buildings. IBM Type 2 consists of six pairs of unshielded twisted pairs of 24 AWG solid wire and a shield casing. The two pairs carried within the shield casing are used to carry Token Ring data. -
Page 22: Tcu Specifications
Types 6 or 9) 2.5 TCU Specifications All STH models provide RJ45 TCU connectors for network connections. The STH-22/-24 supports UTP and the STH-42/-44 supports STP. Each TCU port is internally crossed-over to provide connections for straight- through station lobe cabling. -
Page 23: Operating Specifications
Connector (MIC) are available from Cabletron Systems in eight-foot lengths. These adapter/patch cables permit connection to an existing patch panel equipped with MICs. 2.6 Operating Specifications Cabletron Systems reserves the right to change these specifications at any time without notice. 2.6.1 Ring Speed... -
Page 24: Ring Sequence
STH to put a switch-position change into effect, cancelling the MIB override. Select the desired ring speed. If the Ring Speed switch setting is not yet the desired setting (it may be the same as the former setting from... -
Page 25: Environmental Requirements
0.05 Amps 1.0 Amps +5 to +50 C -30 to +90 C 5 to 95% (non-condensing) 2.8H x 17.0W x 8.0D inches (7.2 x 43.6 x 20.5 cm) STH-22/42: 653,987 hours STH-24/44: 653,972 hours Max Power 15 Watts 12 Watts... -
Page 26: Chapter 3 Installation
Carefully remove the STH from the shipping box. Preserve the shipping box and packing materials for future use. Visually inspect the STH. If there are any signs of damage, contact Cabletron Systems Technical Support immediately. 3.2 Installing the STH All installations must meet the requirements listed below: •... -
Page 27: Adding The Sth To A Stack
STH to the user. Repeat steps 1 and 2 to attach up to four STH hubs in the stack. STH-24 TOKEN RING HUB with LANVIEW ®... -
Page 28: Attaching The Strain Relief Bracket
With the mounting brackets installed, position the STH between the vertical frame members of the 19-inch rack and fasten it securely with the mounting screws as shown in Figure 3-4. Attaching the Strain Relief Bracket SPEED STACK 16Mb/s STH-24 HubSTACK CABLE SUPPORTING LANVIEW with RING TOKEN ®... -
Page 29: Wall-Mounting The Sth
Wall-Mounting the STH HubSTACK TOKEN RING HUB with LANVIEW SUPPORTING 100 OHM UTP CABLE STH-24 16Mb/s Figure 3-3. Installing the Rack-Mount Brackets HubSTACK TOKEN RING HUB with LANVIEW ® SUPPORTING 100 OHM UTP CABLE STH-24 16Mb/s STACK Figure 3-4. Installing the STH in a Rack 3.2.5 Wall-Mounting the STH... - Page 30 Figure 3-5. Installing the Wall Mounting Brackets Select the wall location for the STH within 7 feet of a power outlet. Warning: There is a SHOCK HAZARD whe drilling into walls containing electrical wiring. Select a wall location where drill bits and screw anchors will not come in contact with electrical wiring in the wall.
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Page 31: Free-Standing Installation
21 inches wide, 18 inches deep and 6 inches high, within 7 feet of its power source, as shown in Figure 3-7. 18 IN. HubSTACK STH-24 6 IN. Figure 3-7. Shelf or Table-top Installation Page 3-6... -
Page 32: Connecting The Sth To The Power Source
3.2.7 Connecting the STH to the Power Source Note: The STH has a universal power supply which will accept power sources from 90 Vac to 264 Vac, 47-63 Hz. To connect the STH to the power source: Plug the power cord into the back panel of the STH. Plug the other end of the power cord into a grounded wall outlet. -
Page 33: Finishing The Installation
Finishing the Installation Check that the twisted pair connection meets dB loss and cable specifications outlined Chapter 2. If a link still has not been established, contact Cabletron Systems Technical Support. 3.3 Finishing the Installation The STH is now ready for operation. Before placing the network into... -
Page 34: Chapter 4 Troubleshooting
STACK Green Ports Blinking 4.2 Trouble Resolution If this section does not guide the user to a solution, please contact Cabletron Systems Technical Support (see Section 1.4, Getting Help.) CHAPTER 4 Table 4-1. LED Signals Condition Power on. Power off. - Page 35 Trouble Resolution Loss Of Power If the STH is having power problems, check the power delivery system (power cable, power outlet, circuit breaker, fuse). Loss of Contact with Intelligent Hub If the STACK LED is indicating disconnection from the intelligent hub, it may be that the intelligent hub has placed the STH in bypass to protect itself from beaconing conditions or a mismatched ring speed on the STH.
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