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MONITORING AND TROUBLESHOOTING

5-3

5.1.2 Describing FNB LEDs

FNB LEDs convey information about the status of the FNB connection.

16 Mb (Ring Speed)

The 16 Mb LED indicates the FNB ring speed:

Solid Yellow

The FNB ring speed is set to 16 Mbps, the
default ring speed.

Off

The FNB ring speed is set to 4 Mbps.

For information about specifying the FNB ring speed, see Section 2.5.1.

LWRP (Left Wrap)

The LWRP LED indicates the status of the left FNB connection:

Solid Yellow

The TRBMIM-T left FNB connection is
left-wrapped, is not logically connected to
MIMs to its left.

Off

The TRBMIM-T left FNB connection is not
left-wrapped, is logically connected to MIMs to
its left.

The left-wrapped condition can result from any of the following
circumstances:

•

The TRBMIM-T has been bypassed from the FNB ring via Local
Management or remote management (in which case the TRBMIM-T
will be left-wrapped as well).

•

The MIM to the TRBMIM-T’s left is right-wrapped.

•

There are no MIMs to the left of the TRBMIM-T.

•

The MIM to the TRBMIM-T’s left is running at a different ring speed.

See the TRBMIM/TRBMIM-T Local Management User’s Guide for
information about configuring logical FNB connections in the MMAC for
the TRBMIM/TRBMIM-T.

TRBMIM-T BOOK Page 3 Tuesday, July 2, 1996 10:35 AM

Содержание TRBMIM-T

Страница 1: ...TRBMIM T TOKEN RING BRIDGE MANAGEMENT MODULE USER S GUIDE BOOKTITLE2 OPTIONAL ...

Страница 2: ......

Страница 3: ...ER INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF KNOWN OR SHOULD HAVE KNOWN THE POSSIBILITY OF SUCH DAMAGES Copyright 1996 by Cabletron Systems Inc P O Box 5005 Rochester NH 03866 5005 All Rights Reserved Printed in the United States of America Order Number 9031496 01 July 1996 EMM...

Страница 4: ... or modifications made to this device which are not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment DOC NOTICE This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le présent appareil num...

Страница 5: ...l be interpreted and governed under the laws and in the state and federal courts of New Hampshire You accept the personal jurisdiction and venue of the New Hampshire courts EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY 1 EXCLUSION OF WARRANTY Except as may be specifically provided by Cabletron in writing Cabletron makes no warranty expressed or implied concerning the Program including its docu...

Страница 6: ...espects is proprietary data belonging to Cabletron and or its suppliers For Department of Defense units the product is licensed with Restricted Rights as defined in the DoD Supplement to the Federal Acquisition 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 Te...

Страница 7: ...5022 EN 50082 1 EN 60950 Equipment Type Environment Networking Equipment for use in a Commercial or Light Industrial Environment We the undersigned hereby declare that the equipment packaged with this notice conforms to the above directives Manufacturer Legal Representative in Europe Mr Richard Michaud Mr J Solari ___________________________________ ___________________________________ Full Name Fu...

Страница 8: ...NOTICE vi ...

Страница 9: ...mended Reading 1 15 CHAPTER 2 REQUIREMENTS AND SPECIFICATIONS 2 1 MMAC Requirements 2 1 2 2 Installation Requirements 2 1 2 3 Bridge Management Mode Requirements 2 2 2 4 Front Panel Components 2 2 2 4 1 Port Specifications 2 3 2 4 2 LANVIEW LEDs 2 5 2 4 3 Using The Reset Button 2 6 2 5 Configuring The TRBMIM T 2 6 2 5 1 Dip Switch Settings 2 7 2 5 2 Jumper Settings 2 9 2 6 General Specifications 2...

Страница 10: ...5 2 5 1 2 Describing FNB LEDs 5 3 5 1 3 Describing STN LEDs 5 5 5 2 Monitoring The Initialization Process 5 6 5 2 1 Monitoring With The Power Up Diagnostic Screen 5 6 5 2 2 Monitoring With LEDs 5 8 5 3 Troubleshooting Checklist 5 8 5 3 1 Checking The TRBMIM T 5 8 5 3 2 Checking The Entire Ring 5 10 APPENDIX A TPIM SPECIFICATIONS A 1 TPIM T1 T2 T4 Pinouts A 1 A 2 TPIM F2 F3 Specifications A 2 APPEN...

Страница 11: ...stallation and troubleshooting procedures Users of the TRBMIM T should have a basic working knowledge of the IEEE 802 5 standard for Token Ring networks Token Ring network physical components and source route bridging concepts Figure 1 1 Token Ring Bridge Management Module TRBMIM T SN 16 Mb BOK NSRT LWRP ERR RESET F N B 16 Mb RWRP S T N WFLT WRP STBY TOKEN RING BRIDGE S T I A T O N T M I P C S N O...

Страница 12: ...ms Technical Support By phone 603 332 9400 Monday Friday 8 a m 8 p m Eastern Time By CompuServe GO CTRON from any prompt By Internet mail support ctron com By FTP ctron com or 134 141 197 25 Login anonymous Password your email address NOTE Note provides information of special importance CAUTION Caution provides information about potential hazards to equipment including hardware software and networ...

Страница 13: ...arameters using dip switches and shunting jumpers on the component board Chapter 3 Installation describes how to install the TRBMIM T into an MMAC Chapter 4 Establishing the Bridge Connection describes how to setup the front panel bridge Station port and establish the physical bridge connection between Token Rings Chapter 5 Monitoring and Troubleshooting describes TRBMIM T monitoring and diagnosti...

Страница 14: ...or information on how to set up the bridge Station port and establish the physical bridge connection between rings You can configure the TRBMIM T to operate either as a dedicated source route bridge for linking Token Ring networks or as a combination bridge and ring management module for both bridging and ring management It installs into any of the Media Interface Module MIM slots of the following...

Страница 15: ... the bridge Station port Media flexibility for the front panel bridge Station port provided by interchangeable hot swappable Cabletron Systems Token Ring Port Interface Modules TPIMs Flash EPROM firmware enhancement capability via Trivial File Transfer Protocol TFTP LANVIEW LED system monitoring and diagnostics system Boot PROM support for IP Auto Configuration from a BootP server Automatic Beacon...

Страница 16: ...be used to bridge Ring 1 and Ring 2 in the same MMAC In this configuration the TRBMIM T s FNB port is connected to Ring 2 Its front panel bridge Station port is connected to Ring 1 via cable to any lobe port on any MIM on Ring 1 The TRMMIM is managing Ring 2 Figure 1 2 Bridging Token Rings in the Same MMAC NOTE The ring identifiers Ring 1 and Ring 2 in the following examples are used for illustrat...

Страница 17: ... and Ring 2 in another MMAC In this configuration the TRBMIM T s FNB port is connected to Ring 1 Its front panel bridge Station port is connected to Ring 2 via cable to any lobe port on any MIM on Ring 2 Figure 1 3 Bridging Token Rings in Separate MMACs TRMM MIM MIM MIM MIM MIM MIM TRBMIM T TRMM MIM MIM MIM MIM MIM MIM MIM Ring 1 Ring 2 ...

Страница 18: ...to a separate ring via cable to any lobe port on any MIM on each ring Figure 1 4 Collapsed Backbone Ring 1 4 2 Describing Bridge Management Mode Capabilities This section describes the optional functionality provided by the TRBMIM T when configured to operate in the combination Bridge Management mode You can use the TRBMIM T in the Bridge Management mode when you want to establish an additional To...

Страница 19: ...ting in band and out of band network management Sending traps and alarms to Network Management Stations Recovering from beaconing conditions Controlling modules and ports on the ring Maintaining ring and management security See Section 2 5 1 for information about using dip switches on the TRBMIM T component board to specify the Bridge Management mode and other operational settings for the TRBMIM T...

Страница 20: ...mance data transmission rate does not equal the rate achieved when it is in the Bridge Only mode 1 4 3 Monitoring And Troubleshooting Systems LANVIEW LEDs located on the TRBMIM T front panel provide an at a glance method of monitoring the module s operational status LEDs indicate for example whether the module is operating correctly and the ring operating speed NOTE For optimal bridging performanc...

Страница 21: ...ation settings when AC power is removed Thermal sensors The two thermal sensors detect overheating in the MMAC before the temperature becomes critical The master management module in the MMAC responds by sending an alarm trap to the Network Management Station monitoring the network and by emitting an audible alarm Recovery from beaconing Cabletron Systems ABRP is a software component that works in...

Страница 22: ...nnecting the terminal and accessing and working with Local Management applications Remote Management Support The TRBMIM T is an SNMP compliant device that can be remotely managed by any of the products available from Cabletron Systems line of SPECTRUM remote management applications SNMP support is provided by the MIB groups listed in Table 1 1 Table 1 1 MIB Groups IETF MIBs MIB II RFC 1213 Bridge ...

Страница 23: ...addresses and Locally Administered MAC addresses in the System Level application 1 5 SOURCE ROUTE BRIDGING OVERVIEW Source route SR bridging requires that the source or transmitting station specifies in its data packet the route to the destination station on another ring The source station learns the route to the destination station by first transmitting an explorer frame All Routes Explorer or Si...

Страница 24: ...ALS This section lists Cabletron Systems manuals or sets of manuals included with products typically used with the TRBMIM T Multi Media Access Center Overview and Set Up Guide information about setting up the MMAC TRBMIM TRBMIM T Local Management User s Guide information about monitoring and managing the TRBMIM TRBMIM T included with your TRBMIM T TRMM TRMMIM Installation Guide information about c...

Страница 25: ...cations are recommended if more information is required on designing and implementing a Token Ring network Local Area Networks IEEE Standard 802 5 Token Ring Access Method And Physical Layer Specifications Commercial Building Wiring Standard TIA EIA 568A Standard ...

Страница 26: ...INTRODUCTION 1 16 ...

Страница 27: ...MACs without an FNB can be upgraded with an FNB to provide support for Token Ring networks Contact Cabletron Systems to order the FNB upgrade kit The MMAC must also have the correct number of power supply modules necessary to support the various Token Ring and mixed protocol configurations in the MMAC you want to implement Call Cabletron Systems Technical Support Department for help determining sp...

Страница 28: ...thernet Management Module EMM E6 Ethernet Management Module 2 4 FRONT PANEL COMPONENTS This section provides information about the following front panel components Ports and related components LANVIEW LED monitoring and troubleshooting system Reset button Components are shown in Figure 2 2 CAUTION The TRBMIM T cannot be used in the Bridge Management mode with Cabletron Systems TRMM 2 and TRMM 4 mu...

Страница 29: ...enabling you set up the port for connection to MIMs equipped with either twisted pair or fiber optic lobe ports See Section 4 1 for complete information on setting up the Station port You can specify the ring operating speed for the Station port with a dip switch located on the component board as described in Section 2 5 1 TRBMIM T SN 16 Mb BOK NSRT LWRP ERR RESET F N B 16 Mb RWRP S T N WFLT WRP S...

Страница 30: ...hows the pinout diagram for the Console port Figure 2 3 Console Port Pinout Diagram Console Cable And Cable Adaptors Use the adaptors included with the RJ45 to DB9 console cable to modify the console cable and establish a management connection with either a VT series terminal or a PC Table 2 1 TPIM Specifications TPIM Media Type Connector Type TPIM T1 Shielded Twisted Pair DB9 TPIM T2 Unshielded T...

Страница 31: ...ing conditions Ring speeds for both bridge interfaces Left and right wrap conditions for FNB connection Insertion or non insertion of the TRBMIM T in the FNB ring Insertion or non insertion of a device into the Station port Presence or absence of frame traffic though the Station port DB9 Console Connector DB25 VT series Connector Pin 3 Pin 2 Pin 5 Pin 7 Pin 8 Receive Transmit Ground Request To Sen...

Страница 32: ... Volatile Random Access Memory NVRAM and restored after the reset See Section 2 5 2 if you need information about how to expunge configuration parameters for the TRBMIM T using the NVRAM jumper on the component board Resetting The TRBMIM T To reset the TRBMIM T 1 Insert a pointed object such as a paper clip or ballpoint pen tip into the Reset button hole 2 Press the button once and then release Ch...

Страница 33: ...t mode set SW1 Switch 2 to OFF Selecting The FNB Ring Speed SW2 Switch 7 Use Switch 7 on SW2 to select the FNB ring operating speed The SW2 Switch 7 default setting is ON for 16 Mbps To select a 4 Mbps FNB ring speed set SW2 Switch 7 to OFF Selecting The Station Port Ring Speed SW2 Switch 8 Use Switch 8 on SW 2 to select the Station port ring operating speed The SW 2 Switch 8 default setting is ON...

Страница 34: ...ng speed Switches 1 3 4 5 6 7 8 May be set to either the ON or OFF position by the factory Do not reposition Switches Switch 8 ON 16 Mbps Station port ring speed OFF 4 Mbps Station port ring speed Switches 1 2 3 4 5 6 May be set to either the ON or OFF position by the factory Do not reposition Switches intel i960 JP6 JP5 SW2 SW1 B a t t e r y KEY ON OFF ON OFF SW1 1 2 3 4 5 6 7 8 SW2 ON OFF ON OFF...

Страница 35: ... be stored for up to a year or if you want to clear NVRAM put the jumper over pins 1 and 2 When clearing NVRAM wait five seconds before re enabling the battery to ensure that all system parameter settings have been cleared from NVRAM CAUTION Wear a properly grounded Electric Static Discharge ESD wriststrap when positioning jumper sleeves NOTE The module is shipped from the factory with the battery...

Страница 36: ...e this setting if your modem requires CTS 2 6 GENERAL SPECIFICATIONS This section lists various TRBMIM T specifications 2 6 1 Safety This unit meets the safety requirements of UL 1950 CSA C22 2 No 950 and EN 60950 IEC950 and 73 23 EEC 2 6 2 Electromagnetic Compatibility EMC This unit is compliant with the requirements of FCC part 15 CSA C108 8 EN 55022 VCCI V 3 93 01 EN50082 1 and 89 336 EEC 2 6 3...

Страница 37: ...REQUIREMENTS AND SPECIFICATIONS 2 11 2 6 5 Environmental Specifications Operating Temperature 5 to 40 C Storage Temperature 30 to 90 C Relative Humidity 5 to 95 non condensing ...

Страница 38: ...REQUIREMENTS AND SPECIFICATIONS 2 12 ...

Страница 39: ...f you remove the TRBMIM T from the bag set it on top of the bag in a dry static free and dust free area until you are ready to install 3 2 INSTALLING THE TRBMIM T CAUTION Electrostatic Discharge ESD can damage TRBMIM T components To prevent electrostatic discharges when handling the module hold only the edges of the board or the metal front panel and always wear an anti static wriststrap Avoid unn...

Страница 40: ...ion port before you install the TRBMIM T see Chapter 4 for instructions To install the TRBMIM T 1 Loosen the fastening knobs on the protection panel covering the slot into which you want to install the TRBMIM T and then remove the panel as shown in Figure 3 1 Figure 3 1 Removing a Protection Panel CAUTION To protect the MMAC always fasten protection panels over empty slots and also install the sec...

Страница 41: ...secure the TRBMIM T or other modules to the MMAC FNB backplane may result in poor network performance 4 Power on the hub if necessary allowing at least two to three minutes for completion of the booting process and then check that the following LEDs on the TRBMIM T are indicating normal operation BOK blinking green NSRT solid green ERR off If they do not indicate normal operation proceed to Chapte...

Страница 42: ...INSTALLATION 3 4 ...

Страница 43: ...s section describes how to configure TPIMs for Station port application and install them into the TRBMIM T Station receptacle See Appendix A for information about TPIM operational and media specifications 4 1 1 Configuring TPIMs TPIMs see Figure 4 1 are shipped pre configured to support Ring In Ring Out RI RO application For use in the TRBMIM T however you must configure the dip switches on the TP...

Страница 44: ... 2 to determine functional compatibility with the TRBMIM T Top View See Below For Settings TPIM T1 TPIM T2 TPIM T4 Phantom Switch Settings 1 Cabletron Device Default 0 Non Cabletron Device RI RO STN Switch Settings RI RO Ring In Ring Out Default S Station TRBMIM T Functional P H A N T O M S RI RO 1 0 TPIM F2 TPIM F3 Fiber Key Settings Ctron Cabletron Device Default 802 5 TRBMIM T Functional RI RO ...

Страница 45: ...4 3 until you feel the TPIM slot connection pins insert securely into the TPIM connection sockets 3 Fasten the TPIM mounting screw to secure the TPIM to the TRBMIM T Figure 4 3 Installing a TPIM NOTE All Cabletron TPIMs are hot swappable You do not have to power down or remove the TRBMIM T to install a TPIM TRBMIM T SN 16 Mb BOK NSRT LWRP ERR RESET F N B 16 Mb RWRP S T N WFLT WRAP STBY T P I M S T...

Страница 46: ...n STP cable segment with a DB9 connector as shown in Figure 4 4 Use the TPIM T4 to connect an STP cable segment with an RJ45 connector as shown in Figure 4 5 Figure 4 4 Connecting to the TPIM T1 Figure 4 5 Connecting to the TPIM T4 TRBMIM T SN 16 Mb BOK NSRT LWRP ERR RESET F N B 16 Mb RWRP S T N WFLT WRAP STBY S T A T O I N T P I M To Lobe Port On Other Ring T R B M I M T SN 16 Mb BOK NSRT LWRP ER...

Страница 47: ...the LNK LED on the TPIM T1 T2 T4 lights red or does not light perform the following steps to resolve the problem 1 Check that the device at the other end of the connection has power and that the lobe port to which the TRBMIM T is connected is enabled 2 Verify that the connectors are pinned properly 3 Ensure that ring speeds match at both ends of the connection If a link still cannot be established...

Страница 48: ...er end and vice versa It is recommended that you label fiber optic cable to indicate which end of a fiber strand connects to a Receive port and which end connects to Transmit port By using such a labeling scheme you can eliminate the possibility of connecting devices incorrectly To connect a fiber optic link segment to the TPIM F2 F3 1 Remove the protective plastic covers from the fiber optic port...

Страница 49: ... detect signal traffic If the LNK LED on the TPIM F2 F3 does not light green perform the following steps to resolve the problem 1 Check that the device at the other end of the connection has power and that the lobe port to which the TRBMIM T is connected is enabled 2 Verify that the fiber strands are properly crossed over between the ports on the TRBMIM T and on the fiber optic device at the other...

Страница 50: ...ESTABLISHING THE BRIDGE CONNECTION 4 8 ...

Страница 51: ...perating status of a particular TRBMIM T functional entity The operating system and system hardware components The Station port including the TPIM LNK LED The FNB ring LED functional states are described as follows Off Indicates either that the TRBMIM T is not activated when all LEDs are off or a particular condition indicated by an LED when the TRBMIM T is activated for example the LED is off und...

Страница 52: ...owered off or the TRBMIM T is not connected to the MMAC power bus or the TRBMIM T has not initialized and has failed to start up ERR Error The ERR LED indicates the following operational conditions Off The TRBMIM T is operating normally Solid Red The TRBMIM T has detected a possible hardware failure Flashing Red The TRBMIM T has detected a beaconing condition while operating in the Bridge Manageme...

Страница 53: ...s left wrapped is not logically connected to MIMs to its left Off The TRBMIM T left FNB connection is not left wrapped is logically connected to MIMs to its left The left wrapped condition can result from any of the following circumstances The TRBMIM T has been bypassed from the FNB ring via Local Management or remote management in which case the TRBMIM T will be left wrapped as well The MIM to th...

Страница 54: ... The TRBMIM T right FNB connection is not right wrapped is logically connected to MIMs to its right The right wrapped condition can result from any of the following circumstances The TRBMIM T is in the Bridge Management mode The TRBMIM T has been bypassed from the FNB ring via Local Management or remote management in which case the TRBMIM T will be right wrapped as well The MIM to the TRBMIM T s r...

Страница 55: ...pecifying the bridge Station port ring speed see Section 2 5 1 WFLT Wire Fault The WFLT LED indicates the condition of the connection to the bridge Station port Solid Red A damaged cable is connected to the Station port Off A functional cable is connected to the Station port the normal condition Replace the damaged cable to restore normal operation WRP Wrapped The WRP LED indicates the status of t...

Страница 56: ...oes not detect phantom current Off TPIM F2 F3 only The port does not detect signal traffic 5 2 MONITORING THE INITIALIZATION PROCESS You can use the following TRBMIM T resources to monitor the initialization or power up process Power Up Diagnostic screen LED cycle The Power Up Diagnostic screen displays TRBMIM T diagnostic activities occurring during the power up process that you can view from you...

Страница 57: ...tialization error the test screen provides you with the following response options continue Proceeds with the remainder of the tests retry Executes a single retry of the test producing the error message loop Repeatedly retries the test producing the error message To stop the loop press the Delete key To execute a response option 1 Type the option c r or l at the cursor 2 Press the Enter or Return ...

Страница 58: ...cess stops Upon successful completion of the power up process the ERR LED goes off and the BOK LED blinks Green The remaining LEDs reflect current network configuration settings If these conditions do not exist at the end of the power up process note which LEDs are lit and contact Cabletron Systems Technical Support for assistance 5 3 TROUBLESHOOTING CHECKLIST This section provides a checklist of ...

Страница 59: ...idge Station ports Follow these guidelines when assigning ring numbers If you want multiple bridges interfacing with a common FNB ring to communicate across the MMAC backplane i e collapsed backbone configuration they must have the same FNB ring number Do not assign duplicate ring numbers to different rings Check the NSRT LED to ensure the TRBMIM T is logically inserted into the FNB ring The bridg...

Страница 60: ...arding Active field in Local Management s LAN Net Manager Assignment Screen is enabled Check the cable connected to the TPIM for damage if the WFLT LED is lit 5 3 2 Checking The Entire Ring If the TRBMIM T appears to be functioning properly and traffic is not passing through the bridge then the problem may be somewhere else within the network Verify the items on the following checklist to help iso...

Страница 61: ...ke the Cabletron Systems TPRMIM for example along side different network types For example Ethernet MIMs must be grouped together Token Ring MIMs must be grouped together See Section 3 2 for information about installation guidelines for the TRBMIM T FDDI MIMs must be grouped together Ensure that the maximum lobe cable lengths specified for the media types used in the installation and also the maxi...

Страница 62: ...MONITORING AND TROUBLESHOOTING 5 12 ...

Страница 63: ...A 1 TPIM T1 T2 T4 PINOUTS Figure A 1 illustrates TPIM T1 T2 T4 pinouts for station application Figure A 1 TPIM Pinouts TPIM T1 TPIM T2 T4 1 Receive 2 Ground 3 5V at 250mA 4 Ground 5 Transmit 6 Receive 7 Ground 8 Ground 9 Transmit 1 Not Used 2 Not Used 3 Transmit 4 Receive 5 Receive 6 Transmit 7 Not Used 8 Not Used ...

Страница 64: ...fiber optic cable Table A 3 lists TPIM F3 specifications Table A 1 TPIM F2 Receiver Specifications Test Conditions TA 25 C Parameter Typical Minimum Receive Sensitivity 30 5 dBm 32 0 dBm Peak Input Power 7 6 dBm 8 2 dBm Rise Time 3 3 ns Fall Time 3 3 ns Bit Error Rate Better than 10 10 Table A 2 TPIM F2 Transmitter Average Power Test Conditions TA 25 C Average power measured out of 10 meters of ca...

Страница 65: ...ypical Minimum Maximum Transmitter Peak Wave Length 1300 nm 1270 nm 1330 nm Spectral Width 100 nm Rise Time 2 5 nsec 5 0 nsec Fall Time 3 5 nsec 5 0 nsec Transmitter Average Power 16 9 dBm 18 6 dBm Receiver Spectral Response 1300 nm 1150 nm 1600 nm Receiver Sensitivity 32 5 dBm 34 0 dBm Bit Error Rate Better than 10 10 NOTE Transmitter Power decreases as temperatures rise and increases as temperat...

Страница 66: ...TPIM SPECIFICATIONS A 4 ...

Страница 67: ...EXT tolerance for 16 Mbps Token Ring transmission it is not recommended for installation Category 4 and 5 are enhanced versions of Category 3 Both are composed of the same wire gauge as Category 3 but demonstrate superior performance due to improvements in design for example more twists per foot Because of their ability to filter crosstalk and noise at 16 Mbps they are recommended for Token Ring i...

Страница 68: ...and often used to wire cable runs within the walls of buildings IBM Type 6 consists of two STP lengths of 26AWG stranded wire for data It is typically used in patch panels or to connect devices to from wall jacks Attenuation for Type 6 cable is 3 2 x Type 1 cable 66 m of Type 6 100 meters of Type 1 IBM Type 9 is similar to Type 1 but it uses 26 AWG solid wire instead Attenuation for Type 9 cable i...

Страница 69: ...e TPIM F2 Single Mode Table B 4 lists signal tolerance specifications for Single Mode Fiber Optic cable supported by the TPIM F3 Table B 2 STP Cable Specifications Types Frequency Impedance Attenuation 1 2 4 MHz 16 MHz 150Ω 15 150Ω 15 22 dB km 6 7 db 1000 ft 45 dB km 13 7 db 1000 ft 6 9 4 MHz 16 MHz 150Ω 15 150Ω 15 33 dB km 10 db 1000 ft 66 dB km 20 db 1000 ft Table B 3 Signal Tolerances For Multi...

Страница 70: ...gth for Multimode and 1300 for Single Mode This test ensures that a cable s signal loss is within acceptable limits Table B 4 Single Tolerance For Single Mode Fiber Optic Cable Cable Type Allowable Attentuation Maximum Drive Distance Single Mode 8 125 12 125 µm 10 0 dB or less 10 km 10936 0 yards Typical Signal Attenuation Rate 0 5 dB km ...

Страница 71: ... 7 TPIM 4 1 Console port asserting Clear To Send CTS signal 2 10 Console port pinouts 2 4 D Default hardware settings 2 8 Dip switch settings FNB ring speed 2 7 operational mode 2 7 Station port ring speed 2 7 Document conventions 1 2 organizational structure 1 3 Documentation recommended reading 1 14 related manuals 1 14 E EMC requirements 2 10 EMME 2 2 EMM E6 2 2 Environmental specifications 2 1...

Страница 72: ...on using the Power Up Diagnostic screen 5 6 N Non Volatile RAM NVRAM back up battery 2 9 clearing 2 9 P Physical specifications 2 10 Ports console cable adapters 2 5 Console port described 2 4 Console port pinouts 2 4 Station port 2 3 Power up diagnostic tests 5 7 an overview 5 7 responding to error messages 5 7 5 8 Protection panels recommended use 3 2 Q Qualified personnel 3 1 R Reset button 2 6...

Страница 73: ...re overview 1 4 to 1 5 installation 3 2 Local Management access 1 11 1 12 management support 1 11 MIBs 1 12 monitoring and troubleshooting systems 1 10 physical specifications 2 10 port specifications 2 10 resetting 2 6 safety requirements 2 10 selecting operational mode 2 7 system safeguards 1 11 TPIM installation 4 1 unpacking 3 1 working with configuration switches and jumpers 2 6 to 2 10 TRMM ...

Страница 74: ...INDEX IX 4 ...

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