MICROMMAC-22T/24T/42T/44T STACKABLE TOKEN RING INTELLIGENT HUBS USER’S GUIDE
NOTICE 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.
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.
NOTICE 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. The Program may be contained in firmware, chips or other media.
NOTICE 2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
CONTENTS CHAPTER 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 CONTENTS OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 MicroMMAC-T OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . 1-2 MicroMMAC-T FEATURES . . . . . . . . . . . . . . . . . . . . . . . . 1-3 STACKABLE CAPABILITIES . . . . . . . . . . . . . . . . . . . . . . . 1-8 BRIDGING/ROUTING CAPABILITIES. . . . . . . . . . . . . . . . 1-9 1.5.1 SNA/WAN Integration. . . . . . . . . . . . . . . . . . . . . .
CONTENTS 3.5 3.6 3.7 3.8 3.9 RESETTING THE MICROMMAC-T . . . . . . . . . . . . . . . . . . 3-5 SETTING THE RING SPEED . . . . . . . . . . . . . . . . . . . . . . 3-6 SETTING THE NVRAM SWITCH . . . . . . . . . . . . . . . . . . . 3-7 CONNECTING LOBE PORT CABLING . . . . . . . . . . . . . . 3-8 INSTALLING TPIM MODULES . . . . . . . . . . . . . . . . . . . . 3-12 3.9.1 Setting Phantom and RI/RO Switches . . . . . . . . . 3-13 3.9.2 TPIM Installation . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 3.9.
CONTENTS 5.3 5.2.4 Saved System Messages. . . . . . . . . . . . . . . . . . . . 5-6 VIEWING POWER UP DIAGNOSTIC TESTS . . . . . . . . . .
CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems MicroMMAC-22T/-24T/-42T/ -44T Stackable Token Ring Intelligent Hub User’s Guide. This manual provides installation instructions, network requirements, reference information, and operating instructions for the MicroMMAC-T (Figure 1-1) family of stackable hubs. Installing the MicroMMAC-T requires familiarity with the physical layer components of Token Ring (IEEE 802.5) data communications networks.
INTRODUCTION describes how to install a TPIM and concludes with installation check-out instructions. Chapter 4, Local Management, explains how to set up and use a management terminal and a modem to access Local Management. Chapter 5, Troubleshooting, explains how to monitor the operation performance of the MicroMMAC-T using LANVIEW® LEDs and LCD’s. It also explains how to access POWER UP diagnostic test information. 1.
INTRODUCTION SDLC TOKEN RING Telnet UTP WORKSTATION Figure 1-2. Typical MicroMMAC-T Configuration Scenario All MicroMMAC-Ts are functionally and physically identical except for the number and type of their Trunk Connection Unit (TCU) lobe ports. The following MicroMMAC-T configurations are available: • MicroMMAC-22T: twelve active RJ45 TCU lobe ports that support category 3, 4, and 5 UTP cabling. • MicroMMAC 24T: twenty-four active RJ45 TCU lobe ports that support category 3, 4, and 5 UTP cabling.
INTRODUCTION Active TCU Ports The active TCU ports regenerate, reshape, and filter the incoming signal, permitting UTP lobe cable lengths of up to 120 meters and STP lobe cable lengths up to 150 meters at 16 Mbps ring speed. The MicroMMAC-22T and the MicroMMAC-42T can be upgraded in the field using the Cabletron UTP and STP 12-port upgrade kits. Cable Signal Polarity Differential Manchester encoding is used for each concentrator module TCU port.
INTRODUCTION re-time all data. Cabletron offers a variety of TPIMs for RI/RO trunk connections as shown in Table 1-1. Table 1-1. TPIMs TPIM Media Type Connector TPIM-T1 Shielded Twisted Pair DB9 TPIM-T2 Unshielded Twisted Pair RJ45 TPIM-T4 Shielded Twisted Pair RJ45 TPIM-F2 Multimode Fiber Optic ST TPIM-F3 Single mode Fiber Optic ST Ring Speed Switch Use the Ring Speed Switch to select either 4 or 16 Mbps ring speed.
INTRODUCTION numerous management devices and serve as their management data representative. The network management station then has to query only one management device, the MicroMMAC-T in DLM mode, to access management data for all management devices on the network. Consult your network manager for DLM setup. COM Port Applications Both of the front panel COM ports are factory-configured to support Local Management connections.
INTRODUCTION • Token Ring FNB (Flexible Network Bus) • DOT 5 Logical and Physical • UPS (Uninterruptible Power Supply) • Device • DLM (Distributed LAN Monitor) • PIC MIB (Product Information Chip MIB) • Chassis MIB RMON MIB Support The MicroMMAC-T supports the RMON MIB RFC 1271/1513 Token Ring Extensions shown in Table 1-2. Table 1-2.
INTRODUCTION Table 1-2. RMON MIB RFC 1271/1513 Support (Cont.) Group Subgroup Section Event Event Table event 1 rmon 9 Log Table event 2 Token Ring Ring Station Control Table Token Ring 1 rmon 10 Ring Station Table Token Ring 2 Ring Station Order Table Token Ring 3 Ring Station Config Control Table Token Ring 4 Ring Station Config Table Token Ring 5 Source Routing Stats Table Token Ring 6 1.
INTRODUCTION REAR VIEW MicroMMAC Managing 4 Non-Intelligent Hubs HubSTACK STH-24 RESERVED STACK HubSTACK STH-24 RESERVED STACK HubSTACK STH-24 RESERVED STACK HubSTACK STH-24 RESERVED STACK MicroMMAC-24T TOKEN RING HUB WITH LANVIEW® BRIM Slot STACK2 STACK3 STACK4 STACK5 Figure 1-3. Typical Stackable Configuration NOTE: Token Ring HubSTACK Interface cables, which are used to connect between the MicroMMAC-T and stacked STH hubs, are not included with the MicroMMAC-T. 1.
INTRODUCTION . Table 1-3. BRIMs BRIM Description BRIM-E6 Ethernet Connection BRIM-W6 Wide Area Network (Full or Fractional T1; 56k DDS) BRIM-A6 Asynchronous Transfer Mode Connection BRIM-T6 Token Ring Connection CR BRIM-W/T Cisco WAN BRIM for Token Ring BRIM-FO Fiber Distributed Data Interface Connection 1.5.1 SNA/WAN Integration The MicroSNAC add-on daughterboard provides two ports, both of which can be used to provide conversion from SNA/SDLC or BSC links to LLC2.
INTRODUCTION module. This feature complements the remote SNMP management and allows for quick hub configuration changes or checks. 1.8 RECOMMENDED READING The following publications provide more information on Token Ring network implementation. Local Area Networks, Token Ring Access Method, IEEE Standard 802.5 (1989) Commercial Building Wiring Standard, EIA/TIA-568 LAN Troubleshooting Handbook, Mark Miller (1989, M&T Publishing) 1.
CHAPTER 2 REQUIREMENTS/SPECIFICATIONS Read this chapter prior to installing the MicroMMAC-T. It contains operating specifications and requirements for power and cabling. To obtain satisfactory performance from this equipment, networks must meet the requirements and conditions specified in this chapter. Failure to follow these guidelines may result in poor network performance. 2.1 CABLE SPECIFICATIONS Token Ring architecture provides for a set of Trunk Coupling Units (TCUs) connected by trunk cabling.
REQUIREMENTS/SPECIFICATIONS 2.1.1 UTP Cable Specifications The MicroMMAC-22T and MicroMMAC-24T lobe ports and the TPIM-T2 support voice grade Unshielded Twisted Pair (UTP) cable, as described in specifications for EIA/TIA TSB 568 and IBM Type 3 cable. UTP consists of four pairs of 24 AWG solid wire for data or voice communication and is typically used to wire cable runs within building walls. In some installations, existing UTP building wiring can be used for Token Ring cabling.
REQUIREMENTS/SPECIFICATIONS Maximum Lobe Lengths Lobe length is the physical length of the cable connecting a station to its TCU port at the MicroMMAC-T. Table 2-2 lists the maximum lobe cable length for ring speeds of 4 and 16 Mbps. The values listed refer to total lengths made up of UTP cable only. Table 2-2.
REQUIREMENTS/SPECIFICATIONS 2.1.2 STP Cable Specifications MicroMMACs 42T and 44T and TPIMs T1 and T4 support IBM Type 1, 2, 6, and 9 STP cabling as described below: • IBM Type 1: Two STP lengths of 22 AWG solid wire for data. Used for the longest cable runs within building walls of buildings. • IBM Type 2: Similar to Type 1 data cable, but having four additional UTP lengths of 22 AWG solid wire carried outside of the shield casing.
REQUIREMENTS/SPECIFICATIONS cable length for ring speeds of 4 and 16 Mbps. The cable lengths listed in Table 2-4 refer to total lengths made up of STP cable only . Table 2-4.
REQUIREMENTS/SPECIFICATIONS Mixed Cable Types If multiple cable types exist in network, compensations must be made for the different cable attenuations. Type 6 and Type 9 cables can run only 2/3 the distance of Type 1. Therefore 10 meters of Type 1 ≈ 6.6 meters of Types 6 and 9. 2.1.3 Multimode Fiber Optic Cable Specifications Table 2-6 shows specifications for the Multimode Fiber Optic Cable supported by TPIM-F2 . Table 2-6.
REQUIREMENTS/SPECIFICATIONS Fiber Optic Budget The fiber optic delay budget, which determines the fiber optic cable’s maximum length, should be calculated and taken into consideration in the network design stage. Fiber optic delay budget is determined by summing the optical signal loss due to fiber optic cable attenuation, in-line splices, and fiber optic connectors. 2.1.
REQUIREMENTS/SPECIFICATIONS Fiber Optic Budget The fiber optic delay budget, which determines the fiber optic cable’s maximum length, should be calculated and taken into consideration in the network design stage. Fiber optic delay budget is determined by summing the optical signal loss due to fiber optic cable attenuation, in-line splices, and fiber optic connectors. 2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTING The following sections describe common cable problems and recommendations for correcting them.
REQUIREMENTS/SPECIFICATIONS Other Considerations In addition to complying with the preceding cable specifications, the following recommendations should be followed to minimize errors and obtain optimum performance from the network: • UTP cabling should be free of splices, stubs, or bridged taps. • Maintain a two punch-down block limit between TCU ports and wall outlets. • Properly ground metal troughs, ducts, etc. carrying Token Ring signals.
REQUIREMENTS/SPECIFICATIONS Local Management Both COM 1 and COM 2 ports are factory-configured to support Local Management access by an actual or emulated Digital Equipment Corporation VT 100™ terminal. Booting/Diagnostics Terminal display of POWER UP booting/diagnostic tests available only when terminal is connected to COM 2 (for information about Boot sequences, see Section 5.3 ). UPS COM 2 supports Uninterruptible Power Supply (American Power Conversion only).
REQUIREMENTS/SPECIFICATIONS 5 4 3 2 1 LNK 9 8 7 6 TPIM-T1 RING IN 1. Receive + 2. Ground 3. +5V at 250 mA 4. Ground 5. Transmit 6. Receive 7. Ground 8. Ground 9. Transmit + RING OUT 1. Transmit + 2. Ground 3. +5V at 250 mA 4. Ground 5. Receive 6. Transmit 7. Ground 8. Ground 9. Receive + Figure 2-3. TPIM-T1 Pinouts TPIM-T2 TPIM-T2 provides an RJ45 connector that supports UTP cabling. Figure 2-4 shows pinouts for Ring Out and Ring In applications. 12345678 LNK TPIM-T2 RING OUT 1. Not Used 2.
REQUIREMENTS/SPECIFICATIONS 12345678 LNK TPIM-T4 RING OUT 1. Not Used 2. Not Used 3. Receive 4. Transmit + 5. Transmit 6. Receive + 7. Not Used 8. Not Used RING IN 1. Not Used 2. Not Used 3. Transmit 4. Receive + 5. Receive 6. Transmit + 7. Not Used 8. Not Used Figure 2-5. TPIM-T4 Pinouts TPIM-F2 TPIM-F2, shown in Figure 2-6, provides an ST connector that supports Multimode fiber Optic cabling. RX TX LNK TPIM-F2 Figure 2-6.
REQUIREMENTS/SPECIFICATIONS . Table 2-8. TPIM-F2 Specifications. Typical Value Worst Case Worst Case Budget Typical Budget Receive Sensitivity -30.5 dBm -28.0 dBm — — Peak Input Power -7.6 dBm -8.2 dBm — — Parameter Transmitter Power: 50/125 µm -13.0 dBm -15.0 dBm 13.0 dB 17.5 dB 62.5/125 µm -10.0 dBm -12.0 dBm 16.0 dB 20.5 dB 100/140 µm -7.0 dBm -9.0 dBm 19.0 dB 23.
REQUIREMENTS/SPECIFICATIONS Table 2-9. TPIM-F3 Specifications Parameter Typical Minimum Maximum Fall Time 2.5 nsec 2.2 nsec 5.0 nsec Duty Cycle 50.1% 49.6% 50.7% Bit Error Rate: Better than 10-10 NOTE: Transmitter Power decreases as temperatures rise and increases as temperatures fall. Use the Output Power Coefficient to calculate increased or decreased power output for an operating environment. For example, the typical power output at 25°C is -16.4 dBm.
REQUIREMENTS/SPECIFICATIONS to the average power measurement to correctly compare the average power values measured to the values listed above (i.e., -33.5 dBm average + 3 dB = -30.5 dBm peak). 2.
REQUIREMENTS/SPECIFICATIONS Non-operating Temperature: -30° to +90°C Operating Humidity: 5 to 95% (non-condensing) 2.5.3 Safety This unit meets the safety requirements of UL 1950, CSA C22.2 No. 950 and EN 60950; the EMI requirements of FCC Class A and EN 55022 Class A; and the EMC requirements of EN 50082-1. WARNING: It is the responsibility of the system vendor to ensure that the total system, including the MicroMMAC-T, meets allowed limits of conducted and radiated emissions. 2.5.
CHAPTER 3 INSTALLATION This chapter outlines MicroMMAC-T installation and network connection procedures. Be sure that the network meets the guidelines and requirements outlined in Chapter 2, Requirements/Specifications, before installing the MicroMMAC-T. 3.1 UNPACKING THE MicroMMAC-T Unpack the module carefully. Preserve and save all packaging materials for possible storage or transport of the MicroMMAC-T. Thoroughly inspect the MicroMMAC-T immediately.
INSTALLATION MicroMMAC-24T TOKEN RING HUB WITH LANVIEW® SUPPORTING 100 OHM STP CABLE Figure 3-1. Attaching the Strain Relief Bracket 3.3 INSTALLING THE MicroMMAC-T The MicroMMAC-T can be rack-mounted, wall-mounted, or placed on any horizontal surface. Refer to the following subsections for the appropriate installation instructions.
INSTALLATION 2. Using the four cover screws removed in step 1, attach the rack-mounting brackets to each end of the MicroMMAC-T. Wall/Rack Mounting Brackets (2) MicroMMAC-24T TOKEN RING HUB WITH LANVIEW® SUPPORTING 100 OHM STP CABLE Screws (4) Figure 3-2. Installing of Rack-Mount Brackets 3. With the mounting brackets installed, position the MicroMMAC-T between the vertical frame members of the 19-inch rack and fasten it securely with the mounting screws (see Figure 3-3).
INSTALLATION Molly Screw Anchors Molly Screws Bracket Screws Wall Mounting Bracket Figure 3-4. Wall-Mounting the MicroMMAC-T 2. Select a wall location within seven feet of a power outlet for the MicroMMAC-T. WARNING: When drilling pilot holes, any electrical wiring inside the wall may present a potential SHOCK HAZARD. Select a wall location accordingly. 3. Position the MicroMMAC-T against the wall with the network port facing down. Using a pencil, mark the wall location for the four pilot holes. 4.
INSTALLATION 3.3.3 Free-Standing Installation For a free-standing shelf or table top installation, locate the MicroMMAC-T, as shown in Figure 3-5, within 7 feet of its power source on an unrestricted free surface area 21 inches wide, 18 inches deep, and 6 inches high. 21 IN. 18 IN. MicroMMAC-24T TOKEN RING HUB LANVIEW® WITH SUPPORTING 100 OHM STP CABLE 6 IN. Max. Dist. 7 FT. Figure 3-5. Free-Standing Installation 3.
INSTALLATION To reset the MicroMMAC-T: Insert a small pointed-tip object (e.g., ballpoint pen) into the recessed reset button hole, press the button once, and then release. MicroMMAC-24T TOKEN RING HUB LANVIEW® WITH SUPPORTING 100 OHM STP CABLE 4 Mb 16 Mb SPEED RESET BUTTON RESET SWITCH Figure 3-6. The Reset Button 3.6 SETTING THE RING SPEED The ring speed switch is located on the front face of the MicroMMAC-T as shown in Figure 3-7. The MicroMMAC-T’s factory-default ring speed setting is 16 Mbps.
INSTALLATION MicroMMAC-24T TOKEN RING HUB WITH LANVIEW® SUPPORTING 100 OHM STP CABLE 4 Mb 16 Mb SPEED 4 Mb 16 Mb SPEED Ring Speed LED Indicator On = 16 Mbps Off = 4 Mbps Figure 3-7. The Ring Speed Switch 3.7 SETTING THE NVRAM SWITCH Figure 3-8 shows the location of the NVRAM Reset Switch. It can be reached by a inserting a small screwdriver through the side vent. NVRAM (Non-Volatile Random Access Memory) stores user-entered parameters such as IP address and device name.
INSTALLATION 2. Press the MicroMMAC-T’s Reset button. Once the module is reset, use the factory-default settings or enter new parameters. The MicroMMAC-T stores these settings in NVRAM during normal operation and during power down until the reset switch is toggled again. NOTE: Clearing and resetting NVAM does not reset the date and time. 3.8 CONNECTING LOBE PORT CABLING The MicroMMACs 22T and 24T have unshielded RJ45 lobe ports that support UTP cabling.
INSTALLATION RJ45 Plug RJ45 Plug 8 8 1 RJ45 Plug (at TCU) to Pin 3 (Receive -) . Pin 4 (Transmit +) Pin 5 (Transmit -). Pin 6 (Receive +) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . to. to. to. to. 1 RJ45 Plug (at device port) . . . . . . . . . Pin 3 (Transmit -) . Pin 4 (Receive +) . Pin 5 (Receive -) . Pin 6 (Transmit +) Figure 3-9. Network lobe pinouts Figure 3-10 and Figure 3-11 illustrate possible MicroMMAC-T cabling configurations.
INSTALLATION WALL MicroMMAC-24T MicroMMAC-24T TOKEN RING HUB SUPPORTING 100 Token Ring Station Token Ring Network Interface Card LANVIEW® WITH OHM STP CABLE CPU 16 COM 2 COM 1 Mb/s ACT MGMT RO Punchdown Block UTP Lobe Cable TRMF STP to UTP Type 3 Media Filter OFFICE Wall Jack WIRING CLOSET Figure 3-10.
INSTALLATION WALL MicroMMAC-24T TOKEN RING HUB SUPPORTING 100 LANVIEW® WITH OHM STP CABLE CPU 16 COM 2 COM 1 Mb/s ACT MGMT RO MicroMMAC-44T Token Ring Station Token Ring Network Interface Card MIC Data Connector Patch Panel Wall Jack STP Lobe Cable OFFICE WIRING CLOSET Figure 3-11. STP Configuration Example To attach a lobe segment to a MicroMMAC-T network port: 1.
INSTALLATION 2. The associated Port Status LED lights green when the station boots up. If the LED doesn’t light, perform the following steps: a. Check that the device at the other end of the twisted pair segment has power, and that the network interface driver is initialized. b. Verify the RJ45 connector pinouts on the twisted pair segment. c. Check that the twisted pair connection meets the dB loss limits and cable specifications outlined in Chapter 2. d.
INSTALLATION Table 3-1. Pinout Cross-Reference for TPIMs (Cont.) TPIM-T2/T4 TPIM-T2/T4 TPIM-T1 TPIM-T1 (RJ45) (RJ45) (DB9) (DB9) Ring-In Ring-Out Ring-In Ring-Out RX+ 4 6 1 9 RX- 5 3 6 5 Signal 3.9.1 Setting Phantom and RI/RO Switches The Phantom Switch (shown in Figure 3-13) enables the port to “autowrap” if a trunk cable fails or is removed. The Phantom Switch should be set to the appropriate setting before TPIM installation.
INSTALLATION Top View P H 1 A N (See Below For Settings) T O 0 M STN S RI/RO RI/RO TPIM-T1/TPIM-T2/TPIM-T4 Phantom Switch Settings 1 = Cabletron Device (Default) 0 = Non-Cabletron Device TPIM-F2/TPIM-F3 RI/RO Switch Settings RI/RO = Ring In Ring Out (Default) STN = Station (Not Functional) RI/RO Switch Settings RI/RO = Ring In/Ring Out (Default) S = Station (Not Functional) Figure 3-13. The Phantom and RI/RO Switches 3.9.
INSTALLATION 13 16 14 17 15 18 3 1 6 4 2 5 RI LNK 1 TPIM-T Figure 3-14. Installing a TPIM 3.9.3 Connecting STP Segments Use TPIM-T1 to connect STP segments. Before connecting a segment to the TPIM-T1, confirm proper pinouts at each end of the segment. To connect a TPIM-T1 to a Twisted Pair Segment: 1. Insert the DB9 connector on the segment into the DB9 port on the TPIM as shown in Figure 3-15.
INSTALLATION 18 17 16 15 14 13 LNK 1 TPIM-T 6 5 4 3 2 1 RI Figure 3-15. The TPIM-T1 2. Check that the LNK LED on the TPIM lights green. If the LED is red or is not lighted, perform each of the following steps: a. Check that the device at the other end of the segment has power. b. Verify that the DB9 connector is pinned properly. c. Check that the twisted pair connection meets dB loss limits and cable specifications outlined in Chapter 2. d.
INSTALLATION RO LNK TPIM-T2 18 17 16 15 14 13 LNK TPIM-T2 6 5 4 3 2 1 RI Figure 3-16. The TPIM-T2/-T4 2. Check that the LNK LED on the TPIM lights green. If the LED lights red or is not lit, perform each of the following steps: a. Check that the device at the other end of the segment has power. b. Verify that the RJ45 is pinned properly. c. Check that the twisted pair connection meets dB loss limits and cable specifications outlined in Chapter 2. d.
INSTALLATION • The physical communication link consists of two strands of fiber optic cabling. The Transmit strand (TX) at one end connects to the Receive (RX) port at the other end and vice versa. • Cabletron Systems labels its fiber optic cable to indicate which fiber is Receive and which is Transmit: one fiber is labeled 1, and the other fiber is labeled 2. If using a non-Cabletron cable, labeling in the above manner is recommended. CAUTION: Do not touch the ends of the fiber optic strands.
INSTALLATION a. Check that the device at the other end of the link has power. b. Verify that the fiber strands are properly “crossed-over” between the ports on the module and on the fiber optic device at the other end of the fiber optic link segment. c. Verify that the fiber connection meets the dB loss limit specifications outlined in Chapter 2. d. Check that the port is enabled through MicroMMAC-T Local Management. e. If a link still can not be established, contact Cabletron Systems Technical Support.
CHAPTER 4 LOCAL MANAGEMENT This chapter explains how to set up a management terminal and a modem to access MicroMMAC-T’s Local Management (LM). It also explains how to use Local Management tools to manage the MicroMMAC-T, its components, and its attached segments (i.e., BRIMs, MicroSNAC).
LOCAL MANAGEMENT Cabletron supplies an RJ45 Cable Kit with the MicroMMAC-T. This kit includes a UTP console cable with RJ45 connectors on each end. It also provides adapters for DB9 or DB25 connections. Refer to the RJ45 Cable Kit Instruction Sheet for adapter pinouts and additional instructions. The following sections explain how to attach the console cable to the management terminal. 4.1.
LOCAL MANAGEMENT When you have finished attaching and setting up the terminal, you can access Local Management. Table 4-1.
LOCAL MANAGEMENT MicroMMAC-T’s COM 2 port. Figure 4-2 shows the pinout for a cable with an RJ45 connector at the MicroMMAC-T end of the cable. Pin 1 RJ45 COM 2 PORT RJ45 TO 25-PIN CABLE 25-Pin Female "D" Shell Connector RJ45 COM 2 Port TRANSMIT 1 2 RECEIVE 4 3 RECEIVE SIGNAL GROUND 5 7 SIGNAL GROUND DATA CARRIER DETECT 2 8 DATA CARRIER DETECT DATA TERMINAL READY 6 20 DATA TERMINAL READY RING 8 2 2 RING TRANSMIT Figure 4-2. Modem Cable Pinouts 4.
LOCAL MANAGEMENT uMMAC-T Local Management CABLETRON Systems, Incorporated P.O. Box 5005 Rochester, NH 03867-5005 USA (603) 332-9400 (c) Copyright CABLETRON Systems, Inc. 1995 Device Model Number: Serial Number: Functionality Level: Flash Image Version: BOOTPROM Version: Board Revision: 00.00.01 00.00.01 00.00.01 01.00.01 01.00.01 00.00.01 Enter Password:_________ Figure 4-3. MicroMMAC-T Local Management Screen 2.
LOCAL MANAGEMENT 4.2.2 Accessing Local Management from a Modem 1. Turn on the modem. The modem must be set for Auto Answer and Data Carrier Detect must be active. Refer to your modem’s user manual for operating instructions. 2. Call the modem. The MicroMMAC-T Local Management screen appears when you establish a connection (Figure 4-3). 4.
LOCAL MANAGEMENT uMMAC-T Local Management Flash Image Version: 01.00.01 MAIN MENU SETUP MENU STATUS MENU DEVICE STATISTICS MIB NAVIGATOR EXIT uMMAC-T Local Management Flash Image Version: 01.00.01 uMMAC-T Local Management Flash Image Version: 01.00.01 SETUP MENU STATUS MENU SYSTEM LEVEL SNMP COMMUNITY NAMES SNMP TRAPS FLASH DOWNLOAD RING SECURITY CHASSIS STATUS COMPONENT STATUS RETURN RETURN Figure 4-4.
LOCAL MANAGEMENT (or other procedures where they are described) when working with LM screens: 1. Use the Tab key or arrow keys to highlight the parameter(s). 2. Use the spacebar to toggle through settings for fields offering selections; type settings over fields that you can edit or type over. 3. Highlight the SAVE command at the bottom of the screen after setting parameters and then press the Return key. The “SAVED” message appears on the screen indicating that your change(s) have been saved to memory.
LOCAL MANAGEMENT 4.3.2 The SYSTEM LEVEL Screen The SYSTEM LEVEL Screen (Figure 4-5) displays and lets you set the following parameters: • IP Address, • Subnet Mask • System Date • System Time • Default Gateway • Beacon Recovery • COM Port Applications It also displays the Physical MAC device address and the Default Interface. uMMAC-T Local Management Flash Image Version: 01.00.01 SYSTEM LEVEL System Date: 09/23/94 Host IP Address xxx.xxx.xxx.xxx System Time: 12:23:57 Subnet Mask xxx.xxx.
LOCAL MANAGEMENT 1. Highlight the System Date field. 2. Type the date into the field in a MM/DD/YY format and then press the Return key. 3. If the format is invalid, the message “INVALID DATE” appears. Re-type the date using the correct format. 4. If the format is correct, highlight the SAVE command and press the Return key. The “SAVED” message appears on the screen indicating that your change have been saved to memory. Setting the System Time Use this field to set the correct time. 1.
LOCAL MANAGEMENT 3. Press the Return key. The new value appears in the IP Address field. 4. If the IP Address is correct, highlight the SAVE command and then press the Return key. The “SAVED” message appears on the screen indicating that your changes have been saved to memory. The MicroMMAC-T will then do a soft reset. Modifying the Subnet Mask NOTE: Consult your Network Administrator prior to setting the Subnet Mask. Subnets are logical divisions of the network that serve to isolate groups of devices.
LOCAL MANAGEMENT The “SAVED” message appears on the screen indicating that your changes have been saved to memory. The MicroMMAC-T will then do a soft reset. Setting the Default Gateway The Default Gateway is the IP address of the network connection (e.g., external router) used in forwarding management information from the MicroMMAC-T (e.g., SNMP traps) to a network management station. Use the Default Gateway in conjunction with the Subnet Mask. To set the Default Gateway: 1.
LOCAL MANAGEMENT ABRP locates the problem and corrects it, the MicroMMAC-T generates traps to provide the network’s designated remote management station with information regarding the incident, including: • The beaconing device’s address • The address of the beaconing device’s Nearest Active Upstream Neighbor (NAUN) • The beacon type • The port(s) and/or modules left in bypass • The duration of the beaconing condition NOTE: To prevent users from re-inserting a faulty station that could bring the
LOCAL MANAGEMENT 2. Toggle between ENABLED and DISABLED to make your selection. 3. Highlight the SAVE command and then press the Return key. The “SAVE” message appears on the screen indicating that your selection was saved to memory and the new value of the field takes effect. To set the Number of Retries field: 1. Highlight the Number of Retries field and type in an allowed value. 2. Highlight the SAVE command and then press the Return key.
LOCAL MANAGEMENT serve two purposes: they act as passwords to Local Management (LM) and control SNMP management access to the MicroMMAC-T. You control MicroMMAC-T access by establishing access policy privileges at three increasingly higher levels of security: • Read-Only: The user can view any LM fields not limited exclusively to Super-User privileges, but cannot make any changes.
LOCAL MANAGEMENT Community Name This field displays designated user names. Access Policy This field displays the access privileges accorded to each community name. Editing the Community Name field 1. Highlight the Community Name field. 2. Type in the password, up to 32 characters in length, into the field. If you press the Return key without entering a password, the field defaults to Public. 3. Highlight the SAVE command and then press the Return key.
LOCAL MANAGEMENT uMMAC-T Local Management Flash Image Version: 01.00.01 SNMP TRAPS Trap Destination Trap Community Name xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx Enable Traps public public public public public public public public SAVE [YES] [YES] [YES] [YES] [NO] [NO] [NO] [NO] RETURN Figure 4-7.
LOCAL MANAGEMENT 3. Press the Return key. If the format is invalid, the “INVALID IP FORMAT” message appears. Re-type the Trap Destination IP address using the correct format. 4. Highlight the Trap Community Name field. 5. Enter the community name of the device to receive traps and then press the Return key. If you press the Return key without entering a community name, the field defaults to . 6. Highlight the Enable Traps field. 7.
LOCAL MANAGEMENT uMMAC-T Local Management Flash Image Version: 01.00.01 RING SECURITY STATION ADDRESS xx-xx-xx-xx-xx-xx Stn Edit 00-00-00-00-00-00 [ Add ] Security Mode [ SAVE/EXECUTE Disabled ] RETURN Figure 4-8. RING SECURITY Screen Only stations on the ring’s allowed list can enter the ring. The MicroMMAC-T retains this allowed list and automatically re-enables ring security whenever you power up or reset the unit.
LOCAL MANAGEMENT In Alarm/Remove mode, the MicroMMAC-T sends a “Remove MAC Frame Command” to new stations attempting to enter the ring. A trap sent to the NMS informs it of the action taken. If the Remove MAC Frame Command fails to remove the new station after three attempts, a trap to the NMS informs it that “the station could not be removed.” The following sections discuss RING SECURITY screen fields and provide instructions for using them.
LOCAL MANAGEMENT it sends a trap to the NMS informing it that the station could not be removed. The station must then be physically removed from the ring. SAVE/EXECUTE Use this field to save changes made to ring security in the MicroMMAC-T’s NVRAM. You must use the SAVE/EXECUTE command for your changes to take effect. NEXT_SCREEN Use this command to scroll to the next screen of the allowed list database. PREVIOUS_SCREEN Use this command to scroll back to the previous screen of the allowed list database.
LOCAL MANAGEMENT 2. Highlight the SAVE/EXECUTE command and then press the Return key. Viewing the Revised Allowed List 1. Highlight the RETURN command and then press the Return key. The SETUP MENU screen appears. 2. Highlight RING SECURITY and then press the Return key. The RING SECURITY screen appears, showing the revised Station Address allowed list. Adding Stations to the STATION ADDRESS Allowed List 1. Highlight the Stn Edit field. 2.
LOCAL MANAGEMENT 4.3.6 The DEVICE STATISTICS Screen The DEVICE STATISTICS screen (Figure 4-9) displays ring information, isolating errors, and non-isolating errors. uMMAC-T Local Management Flash Image Version: 01.00.
LOCAL MANAGEMENT • TOTAL: This mode automatically displays statistics describing network performance since the last power-up. Selecting the Device Statistics Counter Mode 1. Highlight the current mode at the bottom of the screen and toggle to a counter mode selection. 2. Press the Return key. The selected counter mode appears at the top and the bottom of the screen. Using the ACCUMULATIVE Counter Mode 1. Select the ACCUMULATIVE counter mode.
LOCAL MANAGEMENT KBytes Received This field displays the sum in kilobytes of frames received by the MicroMMAC-T. Errors Received This field displays the Isolating and Non-Isolating Errors (described below) detected on the ring. Beacon States This field displays the beacon conditions detected on the ring. Stations transmit beacons when they detect bit streaming or signal loss on the ring. Ring Purges This field displays the ring purge frames transmitted by the active monitor.
LOCAL MANAGEMENT occurs when stations enter or leave the ring with the absence of phantom current. This error can also indicate a problem with the receiver of the reporting node, or the transmitter of its NAUN, or the cabling and hub hardware between them. AC Errors This field displays the total Address Recognized/Frame Copied errors. This indicates that the reporting NAUN is faulty. The node cannot set the address recognized indicator and/or frame copied indicator bits in the frame which it has copied.
LOCAL MANAGEMENT • Closed -- Indicates that the management station has closed the adapter • Normal -- Indicates the ring is running with no problems, and tokens are being detected by the management station • Purge -- Indicates that the active monitor has issued a ring purge command.
LOCAL MANAGEMENT Frame Copied Errors This field displays the total number of Frame Copied Errors. These errors occur when a station finds a frame with its address as the destination, but finds the address recognized indicator bits not set to zero. This indicates a possible duplicate address. Rcvr Congestion Errors This field displays the total number of Rcvr Congestion Errors.
LOCAL MANAGEMENT • OPERATIONAL (Figure 4-10) -- Lets you monitor the operational status of the Token Ring network • ADMINISTRATIVE (Figure 4-11) -- Lets you manage access to the Token Ring network • RING OUT ENABLE (Figure 4-12) -- Lets you enable all ports The following sections describe generic CHASSIS STATUS VIEW screen fields and control procedures. Mode This field, located within parentheses next to the screen title, displays the current screen mode.
LOCAL MANAGEMENT VFNB screen configurations for Bypassed modules are described as follows: • Bypassed (|--B--|): The MicroMMAC-T is in the bypass mode and is not connected to an STH module. • Bypassed left (<--B--|): The MicroMMAC-T or the STH is in the bypass mode, but it is connected to the next module. • Bypassed right (|--B-->): The STH is in the bypass mode, but it is connected to the module before it.
LOCAL MANAGEMENT 2. Toggle to a screen mode selection, or press a for ADMINISTRATIVE, o for Operational, or r for RING OUT ENABLE, and then press the Return key. The selected screen mode appears. Setting the REFRESH Field 1. Highlight the REFRESH3sec field. 2. Use the spacebar to toggle through time intervals, or use Shift and the + key to increment the time interval and Shift and the - key to decrease the time interval. 3. Press the Return key to save your changes.
LOCAL MANAGEMENT • ENB (Enabled): The port is enabled and allows an attached station to enter the ring. • BYP (Bypassed): The port is disabled and the station is not on the ring. • LNK (Linked): The port is disabled and an attached station is trying (sending phantom current) to access the ring • INS (Inserted): The port is enabled and the attached station is operational.
LOCAL MANAGEMENT Using the ADMINISTRATIVE Mode Screen In addition to displaying the operational status of ring ports, the ADMINISTRATIVE mode screen provides you with two methods for controlling access to them: • Bypassing ports. • Enabling and Disabling ports.
LOCAL MANAGEMENT 2. Toggle between ON and OFF, make your selection, and then press the Return key. Enabled ports provide access for other stations into the token ring network; disabled ports cannot provide access to the ring until they have been enabled. To enable all ports for all modules: 1. Highlight the ENABLE ALL PORTS field. 2. Press the Return key. All ports are enabled. To bypass all ports on a module: 1. Highlight the VFNB (located under the module identifier). 2.
LOCAL MANAGEMENT uMMAC-T Local Management Flash Image Version: 01.00.01 CHASSIS STATUS VIEW ( RING OUT ENABLE ) 5 4 3 2 1 STH24 MMAC24 |---> <---| 16Mb/ 16Mb/s 1 [RO] 1 [STN] 2 [RO] 2 [STN] 3 [RO] 3 [STN] 4 [RO] 4 [STN] 5 [RO] 5 [STN] 6 [STN] 6 [RO] 7 [STN] 7 [RO] 8 [STN] 8 [RO] 9 [STN] 9 [RO] 10 [STN] 10 [RO] 11 [STN] 11 [RO] 12 [STN] 12 [RO] NEXT [ RING OUT ENABLE ] [ REFRESH 3sec ] RETURN Figure 4-12. CHASSIS STATUS VIEW (RING OUT ENABLE) Screen To switch to and from STN and RO: 1.
LOCAL MANAGEMENT uMMAC-T Local Management Flash Image Version: 01.00.01 COMPONENT STATUS Component Name Admin. Status Chassis Mgr Local Mgmt SNMP Agent Protocol Stack Telnet RMON Network 1 Network 2 enabled enabled enabled enabled enabled enabled enabled enabled RETURN Figure 4-13. COMPONENT STATUS VIEW Screen 4.3.
LOCAL MANAGEMENT Welcome to Cabletron MicroMMAC-T Revision 01.00.01 MIBNav-> help Figure 4-14. MIB Navigator Screen The following sections define MIB commands and describe how to get help on using them. To access a list of MIB commands: Type “help” or “?” at the MIB prompt and then press the Return key. The MIB NAVIGATOR screen appears showing the MIB Navigational and Built In commands listed in Table 4-2. To get help on specific commands: Type help and then press the Return key.
LOCAL MANAGEMENT Table 4-2. MIB Commands Navigation Built-In Special bran cd ch ctro arp n defroute netstat done dir get ls ping snmpbranch snmpget quit mib 2 next pw d snmps snmptree et traceroute exit set show su tree whoa mi Navigational commands Navigational commands allow you to access and manage MIB objects for the device. MIB Commands are described as follows: branch This command displays the object leaves of a specified directory tree.
LOCAL MANAGEMENT next This command shows the next leaf in a path. pwd This command displays the full path name of the directory in which you are working. set This command lets you set the value of a managed object. su This command lets you change your community name. tree This command displays an entire MIB for a device. whoami This command displays community name and access privileges to the MIB. Built-In commands Built-In commands allow you to access and manage network devices connected to the device.
LOCAL MANAGEMENT ping This command let you generate an outbound ping request. snmp branch This command lets you query another SNMP device. snmpget This command lets you query another SNMP device to obtain a value for an object. snmpset This command lets set the values of object in other devices. snmptree This command displays all objects and their values in a device. traceroute This command generates a TRACEROUTE request to an IP address. 4.3.
LOCAL MANAGEMENT uMMAC-T Local Management Flash Image Version: 01.00.01 FLASH DOWNLOAD Download Method: [RUNTIME] Reboot after Download: [YES] Flash Image Server IP: xxx.xxx.xxx.xxx Flash Image File Name: c:\hex\micro_t.hex Download Server IP: xxx.xxx.xxx.xxx Download File Name: c:\hex\micro_t.fls EXECUTE RETURN Figure 4-15. The FLASH DOWNLOAD Screen The following sections discuss the fields on the FLASH DOWNLOAD screen and provide instructions for using them.
LOCAL MANAGEMENT The Reboot after Download field appears by default when the RUNTIME method is used. If YES is selected, the MicroMMAC-T will automatically reset after the image is downloaded into Flash to load the new image into the active system file. You can choose to use the BOOTPROM method also. It forces the device to reset and reboot from the download server rather than from the image stored in Flash. To choose the BOOTPROM method: 1. Highlight the Download Method field 2.
CHAPTER 5 TROUBLESHOOTING This chapter describes and explains how to use LANVIEW LEDs and the Liquid Crystal Display (LCD) to troubleshoot physical layer network problems. The chapter concludes with an overview of the POWER UP Diagnostic Test. 5.1 USING LANVIEW LEDs LANVIEW LEDs (located on the front panel) are Cabletron Systems’ built-in visual diagnostic and status monitoring system. Use the LEDs to monitor network status or diagnose physical-layer network problems.
TROUBLESHOOTING 5.2 USING THE LCD DISPLAY The MicroMMAC-T is equipped with an LCD and a LCD display button as shown in Figure 5-1. LCD MicroMMAC-24T TOKEN RING HUB LANVIEW® WITH SUPPORTING 100 OHM UTP CABLE LCD DISPLAY BUTTON 4M DISPLAY 16M SPEED DISPLAY RESET CPU 16 Mb/s COM 2 COM 1 ACT MGMT EPIM-C 24 23 12 11 RO Figure 5-1.
TROUBLESHOOTING 5.2.1 Static System Messages Static System messages (Table 5-2) display MicroMMAC-T configuration information. To view them, press and release the Display button (Figure 5-1). Press the Display button to scroll through each message. If the Display button is not pressed again within ten seconds, the display defaults back to the product name. Table 5-2. Static System Messages Displayed Message Significance IP Address Displays current IP address.
TROUBLESHOOTING 5.2.2 Alarm Messages Alarm messages (Table 5-3) describe events that occur within the MicroMMAC-T. To view the Alarm Messages queue, press the Display button (Figure 5-1) and hold for five seconds. Press the Display button to scroll through each message. If the Display button is not pressed again within ten seconds, the display defaults back to the product name. Table 5-3. Alarm Messages Displayed Messages NO MESSAGES IN QUEUE TPIM Significance No alarm messages in queue.
TROUBLESHOOTING Table 5-3. Alarm Messages (Cont.) Displayed Messages Significance Stack x Port xx Removed Indicates that a station has been removed from the ring as a result of the beacon recovery process Ring Port xx wrapped Indicates a TPIM RI or RO has Autowrapped. Eagle Indicates that the Eagle chip set is automatically being reinserted. Reinserting Fault Recovery Oscillation Indicates that the network has been in and out of a beaconing state several times. 5.2.
TROUBLESHOOTING Table 5-5. Normal Unsaved Initialization Messages Messages • Bit Swap Test • MicroMMAC-xx Cabletron • Boot Complete • Programming LRAM • Boot From Flash • RARP Req. State • BOOTP Discovery • Test in Progress • Eagle Test • TFTP Complete • Erasing Flash • TFTP in Progress • Flash Programmed • TFTP Req. State • Hardware Init • Writing Flash 5.2.
TROUBLESHOOTING 5.3 VIEWING POWER UP DIAGNOSTIC TESTS The MicroMMAC-T runs from BootPROM comprehensive booting and diagnostic tests of the device whenever it has been started or reset. You can view a chronicle of the tests and any error condition messages they produce by connecting your terminal to the COM 2 port of the MicroMMAC-T. BootPROM loads the test image into Flash at the completion of the test, which lasts approximately two minutes.
TROUBLESHOOTING • retry • loop Choosing continue, or c, lets you proceed with the remainder of the diagnostic test. Choosing retry, or r, lets you repeat the test that produced the error message. Choosing loop, or l, lets you continuously repeat the test that produced the error message until you decide to stop it by pressing the Delete key. NOTE: Call your Cabletron Technical Support representative whenever you discover a system-level error.
POWER SUPPLY CORD The main cord used with this equipment must be a 2 conductor plus ground type with minimum 0.75 mm square conductors and must incorporate a standard IEC appliance coupler on one end and a mains plug on the other end which is suitable for the use and application of the product and that is approved for use in the country of application. GERMAN: Die Netzleitung, die mit diesem Geraet benuetzt wird, soll einen zwei Leiter mit Erdleiter haben, wobei die Leiter mindestens 0.
