Cabletron Systems MT8-MIM Specifikace Strana 1

Cabletron SystemsCabling Guide

viii Chapter 13 Cabling Devices Hardware Mounting...

Token Ring Media9-14 Connector TypesThe wires of the STP cable must be organized in the RJ45 connector properly, based upon the USOC specification and

Connector Types 9-15Token Ring MediaUnshielded Twisted Pair CableRJ45The RJ45 connector is a modular, plastic connector that is often used in UTP cabl

Token Ring Media9-16 Connector TypesThe wires of the UTP cable must be organized in the RJ45 connector properly, based upon the USOC specification and

Connector Types 9-17Token Ring MediaThe connection of individual wires of a UTP cable to the pins of an IEEE 802.5 compliant RJ45 connector are given

Token Ring Media9-18 Connector TypesThe male ST connector is inserted into the channel of the female connector, its guide channels aligned with the lo

10-1Chapter 10Token Ring Network RequirementsThis chapter provides test parameters and specification requirements for Token Ring network cabling.IEEE 8

Token Ring Network Requirements10-2 IEEE 802.5 Shielded Twisted PairAttenuationThe attenuation limit for any Token Ring STP cable link is dependent up

IEEE 802.5 Shielded Twisted Pair 10-3Token Ring Network RequirementsLink LengthThe operation of the Token Ring network places limitations on the amoun

Token Ring Network Requirements10-4 IEEE 802.5 Shielded Twisted PairSpecial Cases of Link LengthIf cable types are mixed in an installation, the diffe

IEEE 802.5 Unshielded Twisted Pair 10-5Token Ring Network RequirementsIEEE 802.5 Unshielded Twisted PairCable TypeThe IEEE 802.5 specification for Toke

1-1 Chapter 1 Introduction Using This Guide The Cabletron Systems Cabling Guide is intended to provide much of the information necessary to allow N

Token Ring Network Requirements10-6 IEEE 802.5 Unshielded Twisted PairImpedanceAll UTP cabling used in a Token Ring installation must test to an imped

IEEE 802.5 Unshielded Twisted Pair 10-7Token Ring Network RequirementsWhen passive Token Ring technology is used, the link length for each network ope

Token Ring Network Requirements10-8 IEEE 802.5j (Multimode Fiber Optics)Category 5The tested requirements for Category 5 UTP trunk cables are the same

IEEE 802.5j (Multimode Fiber Optics) 10-9Token Ring Network RequirementsAttenuationMultimode fiber optic cables must be tested for attenuation with a fi

Token Ring Network Requirements10-10 IEEE 802.5j Single Mode Fiber OpticsIEEE 802.5j Single Mode Fiber OpticsCable TypeIEEE 802.5j single mode fiber op

11-1Chapter 11FDDI MediaThis chapter details the standard media and connector types that may be used in Fiber Distributed Data Interface (FDDI) networ

FDDI Media11-2 Cabling TypesIn any transceiver or Network Interface Card (NIC), the network protocol signals to be transmitted are in the form of chan

Cabling Types 11-3FDDI MediaThe UTP cable used in network installations is the same type of cable used in the installation of telephone lines within b

FDDI Media11-4 Cabling TypesTo overcome this, a crossover must be placed between the FDDI TP-PMD ports, forcing the transmit pins of one device to con

Cabling Types 11-5FDDI MediaCategory 5 UTP consists of 2 or more pairs of 22 or 24 AWG wire. Category 5 cable is constructed and insulated such that t

Introduction1-2 Document Organization The following summarizes the organization of this manual:Chapter 1, Introduction , discusses the use and conte

FDDI Media11-6 Cabling TypesIn any transceiver or Network Interface Card (NIC), the network protocol signals to be transmitted are in the form of chan

Cabling Types 11-7FDDI MediaSTP Cable QualitySTP cable is available in a series of construction and quality styles, known as Types. FDDI TP-PMD applic

FDDI Media11-8 Cabling TypesType 2IBM Type 2 cable is constructed in much the same fashion as Type 1 cable. The two central shielded pairs and the ove

Cabling Types 11-9FDDI MediaThere are two basic types of fiber optics: multimode and single mode. The names come from the types of light used in the tr

FDDI Media11-10 Cabling TypesMultimodeMultimode fiber optic cabling is designed and formulated to allow the propagation of many different wavelengths,

Connector Types 11-11FDDI MediaConnector TypesUTPRJ45The RJ45 connector is a modular, plastic connector that is often used in UTP cable installations.

FDDI Media11-12 Connector TypesFigure 11-7. EIA/TIA 568A Pinout and Pair AssociationThe EIA/TIA 568 B specification reverses the arrangement of Pair 1

Connector Types 11-13FDDI MediaAn STP cable that uses solid core wires requires the use of contact blades with three teeth. This is due to the inabili

FDDI Media11-14 Connector TypesFigure 11-8. FDDI Media Interface ConnectorThe MIC connector is designed to prevent the mis-connection of segments and

Connector Types 11-15FDDI MediaSC ConnectorThe SC connector is a gendered connector that is recommended for use in FDDI networks that incorporate mult

Document Conventions 1-3Introduction Appendix A, Charts and Tables , provides the information contained in the network requirements chapters of this

FDDI Media11-16 Connector Types

12-1Chapter 12FDDI Network RequirementsThis chapter details the test specifications and limitations for media used in FDDI networks.MMF-PMDCable TypeTh

FDDI Network Requirements12-2 SMF-PMDLengthAs long as all other cable quality specifications are met, the FDDI PMD allows a multimode fiber optic link t

LCF-PMD 12-3FDDI Network RequirementsLengthIf all other cable quality specifications are met, the FDDI SMF-PMD allows a single mode fiber optic link to

FDDI Network Requirements12-4 TP -PMD (UTP)LengthAssuming that all other cable quality specifications are met, the FDDI LCF-PMD allows a low-cost fiber

TP-PMD (STP) 12-5FDDI Network RequirementsLengthTP-PMD cabling which is within all other requirements of the specification may be no longer than 100 m

FDDI Network Requirements12-6 TP-PMD (STP)

13-1Chapter 13Cabling DevicesThis chapter identifies a number of commonly-used cabling installation and management devices which may be used to facilit

Cabling Devices13-2 Hardware MountingHardware MountingRelay RackThe relay rack, or electrical equipment rack, is a metal frame that is commonly used t

Hardware Mounting 13-3Cabling DevicesEnclosed Equipment CabinetThe enclosed equipment cabinet, sometime referred to as a “glass front rack,” is basica

Introduction1-4 Additional Assistance Additional Assistance The planning and installation of facility cabling for network operation is a complex and

Cabling Devices13-4 Cable TerminationCable TerminationCable termination equipment provides points where facility cabling may be easily connected to ju

Cable Termination 13-5Cabling DevicesHarmonicaThe Harmonica is a specialized type of patch panel. It is used only in twisted pair networking situation

Cabling Devices13-6 Cable TerminationPunchdown BlockA punchdown block is another means of attaching raw strands of facility cable to a single jumper c

Cable Termination 13-7Cabling DevicesDistribution BoxA distribution box is a form of patch panel that is used with fiber optic cabling. The distributio

Cabling Devices13-8 Cable TerminationWallplateA wallplate is a form of small patch panel typically used at end user locations. The wallplate provides

Facility Cable Management 13-9Cabling DevicesSurface Mount BoxA surface mount box is a type of wallplate which, instead of being mounted in a hole in

Cabling Devices13-10 Facility Cable ManagementD-RingsD-rings are metal rings that are mounted to a wall or beam. The D-rings are shaped like the lette

Facility Cable Management 13-11Cabling DevicesJ-HooksJ-hooks are cable management devices similar in form and function to D-rings. Whereas a D-ring, o

Cabling Devices13-12 Facility Cable ManagementInnerductInnerduct is a corrugated plastic tubing that is used to protect cabling. Most often, innerduct

Facility Cable Management 13-13Cabling DevicesRacewayThe term “Raceway” is used to refer to several items in cable installation. A raceway of any type

2-1 Chapter 2 Cabling Terms This chapter identifies and defines several terms that are used throughout the text of this manual. Physical Components The

Cabling Devices13-14 Facility Cable ManagementTy-Wraps and Adhesive AnchorsTy-Wraps, also called Ty-Fasts, plastic securing straps, and zip straps, ar

14-1Chapter 14Connecting and TerminatingThis chapter deals with the methods used to attach connectors to facility or jumper cables and the termination

Connecting and Terminating14-2 Ethernet1. Align the DB15 connector of the AUI cable with the AUI port of the network device as shown in Figure 14-1. T

Ethernet 14-3Connecting and TerminatingTo remove the DB15 connector from the port once it is locked in, examine the connector for a sliding latch or o

Connecting and Terminating14-4 Ethernet• Check that the twisted pair connection meets dB loss and cable specifications outlined in 10BASE-T Twisted Pai

Ethernet 14-5Connecting and Terminating2. When the RJ21 connector has been correctly inserted, it should remain in place naturally. If there are Velcr

Connecting and Terminating14-6 Ethernet2. Once the housing stops moving in, turn the metal housing clockwise while continuing to apply light forward p

Ethernet 14-7Connecting and TerminatingN-TypeThe N-Type connector is used for intrusive taps in thick coaxial cabling. The instructions which follow d

Connecting and Terminating14-8 Ethernet1. Remove the protective plastic covers from the fiber optic ports on the applicable port on the module, and fro

Token Ring 14-9Connecting and TerminatingToken RingDB9The DB9 connector is often used to connect Token Ring stations to STP jumper cables. The instruc

Cabling Terms2-2 Physical Components Jumper Cabling Jumper cabling is a term that identifies short, inexpensive cables that are used to make connectio

Connecting and Terminating14-10 Token RingIf a link indicator is present for the port, check to see if it is on. If it is not on, perform the followin

Token Ring 14-11Connecting and Terminating2. Press the RJ45 connector into the port until the click of the locking clip is felt. The pressure required

Connecting and Terminating14-12 Token RingToken Ring MICToken Ring MIC connectors only attach to other Token Ring MIC connectors or ports. In order to

Token Ring 14-13Connecting and TerminatingST ConnectorThe instructions which follow detail the process used to connect a set of ST connectors to a sta

Connecting and Terminating14-14 FDDIIf link indicators are present for the fiber optic connection, check that they are on. If an indicator is present b

FDDI 14-15Connecting and TerminatingIf a link indicator is present for the port, check that it is on. If the indicator is not on, the port does not ha

Connecting and Terminating14-16 FDDIFDDI MICBefore attaching connectors to an FDDI MIC port, remove the protective rubber plug from the FDDI port. Als

FDDI 14-17Connecting and TerminatingFigure 14-12. FDDI Media Interface Connector InsertionThe link LED associated with the port should come on, indica

Connecting and Terminating14-18 FDDISC ConnectorEach fiber optic link consists of two strands of fiber optic cabling: the transmit (TX) and the receive

FDDI 14-19Connecting and TerminatingIf link indicators are present for the fiber optic connection, check that they are on. If an indicator is present b

Physical Components 2-3Cabling TermsStrandA strand is a metal or glass (in the case of fiber optics) transmission media that is typically surrounded by

Connecting and Terminating14-20 FDDI

A-1Appendix ACharts and TablesThis chapter presents essential information dealing with the minimum, maximum, and recommended characteristics for stand

Charts and TablesA-2 Ethernet10BASE-T Cable Characteristics10BASE-F Cable Characteristics (multimode)10BASE-F Cable Characteristics (single mode)Aspec

Ethernet A-3Charts and TablesThese are not correct yet:100BASE-TX Cable Characteristics100BASE-FX Cable Characteristics (multimode)100BASE-FX Cable Ch

Charts and TablesA-4 Token RingToken RingLobe Cable DistancesTrunk Cable Distances*. IBM Type 6 cable is recommended for use as jumper cabling only, a

Token Ring A-5Charts and TablesSTP Test RequirementsUTP Test RequirementsMultimode Fiber Optic Test RequirementsSingle Mode Fiber Optic Test Requireme

Charts and TablesA-6 FDDIFDDIMaximum Cable Distances*. Category 5 UTP cabling only†. IBM Type 1 STP cabling onlyTable 14-2. FDDI Distance LimitationsM

Glossary-1GlossaThis glossary provides brief descriptions of some of the recurrent terms in the main text, as well as related terms used in discussion

Attenuation to CardGlossary-2Attenuation Loss of signal power (measured in decibels) due to transmission through a cable. Attenuation is dependent on

Glossary-3Channel to CrosstalkChannel A portion of a backplane bus which is specifically partitioned off for the transmission of one type of network da

Cabling Terms2-4 Physical ComponentsHousing (Shell)The basis of the connector is its housing. A housing is the metal or plastic parts that make up the

CSMA/CD to Dual AttachedGlossary-4CSMA/CD Carrier Sense Multiple Access with Collision Detection. CSMA/CD is the basis for the operation of Ethernet n

Glossary-5Dual Homing to FNBDual Homing A station connection method for FDDI which connects a device’s A/B ports to the M ports of two separate dual-a

Frame to InterfaceGlossary-6Frame A group of bits that form a discrete block of information. Frames contain network control information or data. The s

Glossary-7Internet to MAUInternet A world-wide network which provides access through a vast chain of private and public LANs.Interoperability The capa

Mbps to NVRAMGlossary-8Mbps Megabits Per Second. Mbps indicates the number of groups of 1000 bits of data that are being transmitted through an operat

Glossary-9Octet to RedundantOctet A numerical value made up of eight binary places (bits). Octets can represent decimal numbers from zero (0000 0000)

Relay to SIMMGlossary-10Relay An electrical switch which opens and closes in response to the application of voltage or current.Repeater A network devi

Glossary-11Single Attached to Subnet MaskSingle Attached Connected to an FDDI network through a single cable which does not provide for auto-wrap func

Switch to UTPGlossary-12Switch A network device which connects two or more separate network segments and allows traffic to be passed between them when

Index-1IndexNumerics100BASE-FXattenuation 7-4, 8-5cable requirements 7-4, 8-5full-duplex 8-5insertion loss 7-4, 8-5link length 8-6multimode 7-5propaga

Physical Components 2-5Cabling TermsGenderThe gender of a connector refers to the organization of the pins, contacts, or channels of the connector. Co

Index-2DDB15connector 4-17pinout 4-17Document organization 1-2EEIA/TIA568A RJ45 jack 4-24definition 3-1pair association 4-7Ethernet - See applicable 10

Index-3PPatch panel 13-4Punchdown block 4-26, 13-6RRelated documents 1-4RG58 A/U - See 10BASE2RJ21 4-25pair mapping 4-9RJ45 4-23, 11-11RJ45 (shielded)

Index-4

Cabling Terms2-6 Test CharacteristicsPortA port is a set of pins or channels on a networking or cabling device that are arranged to accept a connector

Test Characteristics 2-7Cabling TermsDelayThe term delay, when applied to network cabling, typically refers to the propagation delay of the segment or

Cabling Terms2-8 Test Characteristics

3-1Chapter 3Relevant SpecificationsThis chapter presents and examines a number of networking specifications and how they are related to planning and ins

Relevant Specifications3-2 Universal Service Order Code (USOC)The installation procedures of the EIA/TIA help to ensure that care is taken to avoid cab

4-1Chapter 4Ethernet MediaThis chapter examines the physical characteristics and requirements of both physical cabling and the connectors and ports us

Ethernet Media4-2 Cabling TypesFigure 4-1. AUI Cable ConfigurationsThe reason for the configuration of AUI cables as Male to Female only is due to their

Cabling Types 4-3Ethernet MediaOfficeOffice AUI cable is a thinner cable that is more convenient to use on many environments than standard AUI. This lig

Ethernet Media4-4 Cabling TypesThick coaxial cable is a media used exclusively in Ethernet installations, commonly as a backbone media. Transceivers a

Cabling Types 4-5Ethernet MediaBuilding Network Coax (BNC) connectors crimp onto a properly prepared cable end with a crimping tool. To prevent signal

iNotice Notice Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior n

Ethernet Media4-6 Cabling TypesBoth the original and the inverted signal are then transmitted, the original signal over the TX+ wire, the inverted sig

Cabling Types 4-7Ethernet MediaThe association of pairs of wire within the UTP cable jacket are decided by the specifications to which the cable is bui

Ethernet Media4-8 Cabling TypesTwenty-Five Pair CableUTP cabling in large installations requiring several cable runs between two points is often 25-pa

Cabling Types 4-9Ethernet MediaAs with four-pair cable, the wires within a 25-pair cable are identified by color. The jacket of each wire in a 25-pair

Ethernet Media4-10 Cabling Types4RX + Red/Orange 32 A13 B13RX - Orange/Red 7 A14 B14TX + Red/Green 33 A15 B15TX - Green/Red 8 A16 B165RX + Red/Brown 3

Cabling Types 4-11Ethernet Media10RX + Yellow/Brown 44 A37 B37RX - Brown/Yellow 19 A38 B38TX + Yellow/Gray 45 A39 B39TX - Gray/Yellow 20 A40 B4011RX +

Ethernet Media4-12 Cabling TypesCrossoversThe 10BASE-T and 100BASE-TX specifications require that some UTP connections be crossed over. Crossing over i

Cabling Types 4-13Ethernet MediaUTP Cable QualityUTP cabling is produced in a number of overall quality levels, called Categories. The requirements of

Ethernet Media4-14 Cabling TypesCategory 5 UTP consists of 2 or more pairs of 22 or 24 AWG wire. Category 5 cable is constructed and insulated such th

Cabling Types 4-15Ethernet MediaFiber optics of both types are measured and identified by a variety of means. The usual means of referring to a fiber op

Noticeii

Ethernet Media4-16 Cabling TypesSingle ModeSingle mode fiber optics are designed specifically to allow the transmission of a very narrow range of wavele

Connector Types 4-17Ethernet MediaConnector TypesAUIAUI cabling is always connected with DB15 ports and connectors. The use of any other type of conne

Ethernet Media4-18 Connector TypesTable 4-3. AUI PinoutsAUI Connector Pin Wire Function1 Logic Ref2 Collision +3 Transmit +4 Logic Ref5 Receive +6 Pow

Connector Types 4-19Ethernet MediaCoaxial CableThe connectors available for coaxial cabling are dependent upon the type of coaxial cabling in question

Ethernet Media4-20 Connector TypesThick coaxial cables require termination with N-Type connectors. As the coaxial cable carries network transmissions

Connector Types 4-21Ethernet MediaFigure 4-11. Cable Saddle and Transceiver AssemblyBNCThe BNC connector, used in 10BASE2 environments, is an intrusiv

Ethernet Media4-22 Connector TypesFigure 4-12. BNC connectorsT-ConnectorConnections from the cable to network nodes are typically made using T-connect

Connector Types 4-23Ethernet MediaUTP CableRJ45The RJ45 connector is a modular, plastic connector that is often used in UTP cable installations. The R

Ethernet Media4-24 Connector TypesFigure 4-15. Solid and Stranded RJ45 BladesThe solid UTP connector arranges the contact points of the blades in a st

Connector Types 4-25Ethernet MediaThe EIA/TIA 568B specification reverses the arrangement of Pair 1 and Pair 2, but does not change the association of

iii Chapter 1 Introduction Using This Guide...

Ethernet Media4-26 Connector TypesFigure 4-18. RJ21 Pinout Mapping for 10BASE-TPunchdown BlocksWhile not strictly a connector type, the punchdown bloc

Connector Types 4-27Ethernet MediaFigure 4-19. Punchdown Block Mapping for UTP CablingABCD011011202130314041501845n19

Ethernet Media4-28 Connector TypesFiber OpticsAs both multimode and single mode fiber optics use the same standard connector in the Ethernet 10BASE-FL

Connector Types 4-29Ethernet MediaThe key guide channels of the male ST connector allow the ST connector to only be connected to a female ST connector

Ethernet Media4-30 Connector Types

5-1Chapter 5Ethernet Network RequirementsThis chapter provides test parameters and specification requirements for Ethernet network cabling.10BASE-TAll

Ethernet Network Requirements5-2 10BASE-TThe insertion loss characteristics of a cable are one of the main determinants of link length allowed by the

10BASE-T 5-3Ethernet Network RequirementsCrosstalkCrosstalk is electrical interference between wires. Crosstalk occurs when a cable strand absorbs sig

Ethernet Network Requirements5-4 10BASE-F (Multimode)The IEEE 802.3 10BASE-T specification requires that all 10BASE-T devices support UTP cables of not

10BASE-F (Multimode) 5-5Ethernet Network RequirementsAttenuationMultimode fiber optic cables must be tested for attenuation with a fiber optic attenuati

iv Chapter 5 Ethernet Network Requirements 10BASE-T ...

Ethernet Network Requirements5-6 Ethernet FOIRL (Single Mode)LengthThe 10BASE-F specification limits a multimode fiber optic cable segment to 2 km or le

Ethernet FOIRL (Single Mode) 5-7Ethernet Network RequirementsInsertion LossThe FOIRL specification allows for a total loss of 10 dB or less between any

Ethernet Network Requirements5-8 10BASE210BASE2All Cabletron Systems 10BASE2 products require that installed thin coaxial cables and related cabling h

10BASE5 (Coaxial Cable) 5-9Ethernet Network RequirementsGroundingEach thin coaxial cable segment should be connected to earth ground at only one point

Ethernet Network Requirements5-10 10BASE5 (Coaxial Cable)Connectors/Taps10BASE5 cables may be terminated with intrusive (N-Type) connectors or tapped

6-1Chapter 6Full-Duplex Ethernet Network RequirementsThis chapter provides test parameters and specification requirements for Full-Duplex Ethernet netw

Full-Duplex Ethernet Network Requirements6-2 Full-Duplex 10BASE-TInsertion Loss (Attenuation)The maximum allowable insertion loss for any 10BASE-T sta

Full-Duplex 10BASE-T 6-3Full-Duplex Ethernet Network RequirementsCrosstalkCrosstalk is electrical interference between wires. Crosstalk occurs when a

Full-Duplex Ethernet Network Requirements6-4 10BASE-F (Multimode)The IEEE 802.3 10BASE-T specification requires that all 10BASE-T devices support UTP c

10BASE-F (Multimode) 6-5Full-Duplex Ethernet Network RequirementsAttenuationMultimode fiber optic cables must be tested for attenuation with a fiber opt

v 10BASE-F (Multimode)...6-4Cable Type ..

Full-Duplex Ethernet Network Requirements6-6 Ethernet FOIRL (Single Mode)LengthThe 10BASE-F specification limits a multimode fiber optic cable segment t

Ethernet FOIRL (Single Mode) 6-7Full-Duplex Ethernet Network RequirementsInsertion LossThe FOIRL specification allows for a total loss of 10.0 dB or le

Full-Duplex Ethernet Network Requirements6-8 Ethernet FOIRL (Single Mode)

7-1Chapter 7Fast Ethernet Network RequirementsThis chapter provides test parameters and specification requirements for Fast Ethernet network cabling.10

Fast Ethernet Network Requirements7-2 100BASE-TXThe TIA/EIA 568A cabling specification for Category 5 compliant UTP installations allows the use of two

100BASE-TX 7-3Fast Ethernet Network RequirementsDelayThe maximum propagation delay allowable on a 100BASE-TX segment is 1 microsecond (µs). If a Fast

Fast Ethernet Network Requirements7-4 100BASE-FX (Multimode)100BASE-FX (Multimode)All Cabletron Systems 100BASE-FX products require that installed fac

Hybrid Installations 7-5Fast Ethernet Network RequirementsDelayAs fiber optic cabling is often used to make connections between Fast Ethernet repeaters

Fast Ethernet Network Requirements7-6 Hybrid InstallationsFigure 7-1. Fast Ethernet Network RadiusIf the two longest links in the Fast Ethernet repeat

Hybrid Installations 7-7Fast Ethernet Network RequirementsThe design and operation of these different repeater types result in different operating cha

vi Chapter 8 Full-Duplex Fast Ethernet Network Requirements 100BASE-TX...

Fast Ethernet Network Requirements7-8 Hybrid Installations

8-1Chapter 8Full-Duplex Fast Ethernet Network RequirementsThis chapter provides test parameters and specification requirements for Full-Duplex Fast Eth

Full-Duplex Fast Ethernet Network Requirements8-2 100BASE-TXInsertion Loss (Attenuation)The maximum allowable insertion loss for any 100BASE-TX statio

100BASE-TX 8-3Full-Duplex Fast Ethernet Network Requirements25-Pair CableThe acceptable amount of NEXT between pairs in a 25-pair cable is at least 60

Full-Duplex Fast Ethernet Network Requirements8-4 100BASE-TXLengthThe 100BASE-TX standard specifies that any 100BASE-TX compliant device must be capabl

100BASE-FX (Multimode) 8-5Full-Duplex Fast Ethernet Network Requirements100BASE-FX (Multimode)All Cabletron Systems 100BASE-FX products require that i

Full-Duplex Fast Ethernet Network Requirements8-6 100BASE-FX (Multimode)If there is any signal path whose total one-way propagation delay exceeds 2.56

9-1Chapter 9Token Ring MediaThis chapter examines the physical characteristics and requirements of both cabling and the connectors and ports used in T

Token Ring Media9-2 Cabling TypesFigure 9-1. STP Cable Pair AssociationTwisting the pairs together throughout the cable helps to reduce the effects of

Cabling Types 9-3Token Ring MediaFigure 9-2. Twisted Pair Signal EqualizationSTP cable is made up of four or more wires, and each wire within the cabl

vii IEEE 802.5j (Multimode Fiber Optics) ...10-8Cable Type ...

Token Ring Media9-4 Cabling TypesThe individual wires are twisted into pairs. The pairs that are formed by this twisting are then surrounded by a myla

Cabling Types 9-5Token Ring MediaType 9Type 9 cable is similar in construction to Type 6 cable, and is intended to be used for the same purposes. The

Token Ring Media9-6 Cabling TypesWhile UTP cables are usually built to provide four pairs of wire, IEEE 802.5 standards only require the use of two pa

Cabling Types 9-7Token Ring MediaCategory 3UTP cabling that is built to the Category 3 specification consists of two or more pairs of solid 24 AWG copp

Token Ring Media9-8 Cabling TypesFiber OpticsFiber optic cable is a high performance media constructed of glass or plastic that uses pulses of light a

Cabling Types 9-9Token Ring MediaIn much the same way that UTP cabling is available in two-, four-, 25-, and 50-pair cables, strands of fiber optic cab

Token Ring Media9-10 Connector TypesConnector TypesSTPMedium Interface Connector (MIC)The Medium Interface Connector is a genderless connector that is

Connector Types 9-11Token Ring MediaDB9The DB9 connector is a smaller standard connector for IEEE 802.5 networking applications, typically used for de

Token Ring Media9-12 Connector TypesThe DB9 connector does not perform a wrap on disconnect as does the larger MIC connector. There is no internal mec

Connector Types 9-13Token Ring MediaFigure 9-6. The Shielded RJ45 ConnectorThe shielded RJ45 cable is made up of the plastic and metal outer housing a