USER’S GUIDE
MICROMMAC-22T/24T/42T/44T STACKABLE TOKEN RING INTELLIGENT HUBS
Copyright March 1996 by Cabletron Systems, Inc
DOC NOTICE
FCC NOTICE
VCCI NOTICE
CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT
EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY
CABLETRON SOFTWARE PROGRAM LICENSE
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
CHAPTER 1 INTRODUCTION
CONTENTS
CHAPTER 2 REQUIREMENTS/SPECIFICATIONS
CHAPTER 3 INSTALLATION
CHAPTER 4 LOCAL MANAGEMENT
CHAPTER 5 TROUBLESHOOTING
CONTENTS
5.2.4 Saved System Messages 5.3 VIEWING POWER UP DIAGNOSTIC TESTS
Figure 1-1. The MicroMMAC-T
1.1 CONTENTS OVERVIEW
CHAPTER INTRODUCTION
DISPLAY RESET
INTRODUCTION
1.2 MicroMMAC-T OVERVIEW
Telnet
1.3 MicroMMAC-T FEATURES
Figure 1-2. Typical MicroMMAC-T Configuration Scenario
Local Management
Cable Signal Polarity
Speed Fault Protection
Active TCU Ports
LANVIEW LEDs
Ring Speed Switch
Cabletron’s Distributed LAN Monitor Mode
Flash EEPROM
MIB Support
Reset Button
COM Port Applications
LCD and LCD Display Button
RMON MIB Support
Table 1-2. RMON MIB RFC 1271/1513 Support Cont
1.4 STACKABLE CAPABILITIES
Figure 1-3. Typical Stackable Configuration
1.5 BRIDGING/ROUTING CAPABILITIES
1.6 REMOTE MANAGEMENT CAPABILITIES
1.5.1 SNA/WAN Integration
1.7 TELNET CAPABILITIES
Commercial Building Wiring Standard, EIA/TIA-568
1.8 RECOMMENDED READING
1.9 GETTING HELP
Local Area Networks, Token Ring Access Method, IEEE Standard 802.5
2.1 CABLE SPECIFICATIONS
CHAPTER REQUIREMENTS/SPECIFICATIONS
Attenuation and Impedance
2.1.1 UTP Cable Specifications
Type 3 Media Filters
Maximum Lobe Lengths
Maximum Number of Stations
Table 2-3. STP Cable Specifications
2.1.2 STP Cable Specifications
Attenuation and Impedance
Maximum Lobe Lengths
Table 2-5. STP Maximum Drive Distance
Maximum Trunk Lengths
Maximum Number of Stations
Table 2-4. STP Maximum Lobe Lengths
802.5 specifications allow for a
The maximum allowable fiber
optic cable length is 2 km
2187.2 yards. However, IEEE
Maximum Trunk Lengths
2.1.4 Single Mode Fiber Optic Cable Specifications
Table 2-7. Single Mode Fiber Optic Cable Specifications
Fiber Optic Budget
Crosstalk
2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTING
Temperature
Fiber Optic Budget
2.3 COM PORT SPECIFICATIONS
SLIP
2.4 TPIM SPECIFICATIONS
Booting/Diagnostics
Local Management
TPIM-T4
TPIM-T2
TPIM-F2
NOTE Transmitter power and receive sensitivity levels, shown in
Parameter
REQUIREMENTS/SPECIFICATIONS
TPIM-F3
TPIM-F2 Specifications
Table 2-9. TPIM-F3 Specifications
When measuring power levels with an Average Power Meter, add 3 dBm
2.5.1 Power Supply Requirements
2.5 GENERAL SPECIFICATIONS
2.5.2 Environmental Requirements
2.5.5
2.5.3 Safety
Service
2.5.4 Physical
3.1 UNPACKING THE MicroMMAC-T
CHAPTER INSTALLATION
3.2 ATTACHING THE STRAIN RELIEF BRACKET
3.3.1 Rack-Mounting the MicroMMAC-T
3.3 INSTALLING THE MicroMMAC-T
INSTALLATION
Figure 3-2. Installing of Rack-Mount Brackets
3.3.2 Wall-Mounting the MicroMMAC-T
Figure 3-3. Installing the MicroMMAC-T in a 19-inch Rack
Molly Screw Anchors Molly Screws Bracket Screws Wall Mounting Bracket
Figure 3-4. Wall-Mounting the MicroMMAC-T
Figure 3-5. Free-Standing Installation
3.3.3 Free-Standing Installation
3.4 CONNECTING TO A POWER SOURCE
3.5 RESETTING THE MICROMMAC-T
To reset the MicroMMAC-T
3.6 SETTING THE RING SPEED
To change the ring speed
To restore MicroMMAC-T parameters to the factory defaults
3.7 SETTING THE NVRAM SWITCH
NOTE Clearing and resetting NVAM does not reset the date and time
3.8 CONNECTING LOBE PORT CABLING
at device port
INSTALLATION
RJ45 Plug
at TCU
Lobe Cable
INSTALLATION
Figure 3-10. UTP Configuration Example
3-10
Figure 3-12. MicroMMAC-T Network Ports
INSTALLATION
To attach a lobe segment to a MicroMMAC-T network port
Figure 3-11. STP Configuration Example
3.9 INSTALLING TPIM MODULES
Table 3-1. Pinout Cross-Reference for TPIMs Cont
3.9.1 Setting Phantom and RI/RO Switches
To install a TPIM, perform the following steps
3.9.2 TPIM Installation
CAUTION Observe all static precautions while handling TPIMs
To connect a TPIM-T1 to a Twisted Pair Segment
3.9.3 Connecting STP Segments
To connect a segment to a TPIM-T2/-T4
3.9.4 Connecting Twisted Pair Segments
Figure 3-16. The TPIM-T2/-T4
3.9.5 Connecting Fiber Optic Link Segments
Figure 3-17. The TPIM-F2/-F3
To connect a fiber optic link segment to the TPIM-F2 /-F3
To check MicroMMAC-T installation
3.10 CHECKING THE INSTALLATION
4.1 MANAGEMENT TERMINAL REQUIREMENTS
CHAPTER LOCAL MANAGEMENT
Use Local Management to Do the Following
4.1.1 Attaching the Management Terminal
4.1.2 Management Terminal Setup Parameters
To attach a management terminal to the MicroMMAC-T
Table 4-1. Terminal Settings for LM Terminal
4.1.3 Modem Cable Configuration and Setup
To access Local Management
4.2 ACCESSING LOCAL MANAGEMENT
Figure 4-3. MicroMMAC-T Local Management Screen
4.2.1 Accessing Local Management via Telnet
MAIN MENU Screen
4.2.2 Accessing Local Management from a Modem
4.3 USING LOCAL MANAGEMENT
SETUP MENU Screen
SETUP MENU
4.3.1 Working with Local Management Screens
Setting or Modifying Local Management Screen Fields
SETUP MENU STATUS MENU DEVICE STATISTICS MIB NAVIGATOR EXIT
Exiting Your Local Management Session
Exiting a Local Management Screen
Setting the System Date
4.3.2 The SYSTEM LEVEL Screen
Setting the Host IP Address
Setting the System Time
To modify the Subnet Mask
Modifying the Subnet Mask
NOTE ARBP is supported only by Cabletron products
Setting the Default Gateway
To set the Default Gateway
Setting Automatic Beacon Recovery Process ABRP Fields
To set the Beacon Recovery field
To set the Retry Interval field
4.3.3 The SNMP COMMUNITY NAMES Screen
Setting COM 1 and COM 2 Applications
To set the Number of Retries field
Read-Write The user can view all LM fields and can edit all but the
Editing the Community Name field
4.3.4 The SNMP TRAPS Screen
Access Policy
Community Name
Trap Community Name
Enable Traps
Setting SNMP Traps
Trap Destination
4.3.5 The RING SECURITY Screen
You can select from two modes of ring security Alarm Only
NOTE The NMS receives each station added trap once only
Security Mode
STATION ADDRESS
Stn Edit
PREVIOUSSCREEN
Changing the Security Mode
SAVE/EXECUTE
NEXTSCREEN
NOTE You cannot delete the Micro-MMAC-T address from the list
Viewing the Revised Allowed List
Adding Stations to the STATION ADDRESS Allowed List
Deleting Stations from the STATION ADDRESS Allowed List
DEVICE STATISTICS
4.3.6 The DEVICE STATISTICS Screen
Frames Received
Selecting the Device Statistics Counter Mode
Using the ACCUMULATIVE Counter Mode
Setting the Refresh Field
Burst Errors
Errors Received
ISOLATING ERRORS
Line Errors
RING INFORMATION
AC Errors
Abort Transmit Errors
Internal Errors
Ring Number
Ports Enabled
NON-ISOLATING ERRORS
Lost Frame Errors
Token Errors
4.3.7 The CHASSIS STATUS VIEW Screen
Frame Copied Errors
Rcvr Congestion Errors
Port Status
Mode
Virtual Flexible Network Bus VFNB
PREVIOUS
Screen Mode Status
ENABLE ALL PORTS ADMINISTRATIVE mode only
NEXT
Using the OPERATIONAL Mode Screen
Setting the REFRESH Field
Return key
To display the status of RI/RO ports, BRIMs, or the MicroSNAC device
To display the status of ports
To enable and disable select ports
Using the ADMINISTRATIVE Mode Screen
To reconnect a module to the token ring
To enable all ports for all modules
Using the RING OUT ENABLE Mode Screen
To bypass all ports on a module
To switch to and from STN and RO
4.3.8 The COMPONENT STATUS Screen
Figure 4-13. COMPONENT STATUS VIEW Screen
4.3.9 The MIB NAVIGATOR Screen
To get help on specific commands
To access a list of MIB commands
To escape from the MIB NAVIGATOR screen
bran
whoami
Built-In commands
next
tree
snmpget
4.3.10 The FLASH DOWNLOAD Screen
ping
snmp branch
To chose the RUNTIME method
Download Method field
Flash Image File Name
To choose the BOOTPROM method
2. Toggle from RUNTIME to BOOTPROM using the spacebar
Flash Image Server IP
5.1 USING LANVIEW LEDs
CHAPTER TROUBLESHOOTING
5.2 USING THE LCD DISPLAY
Table 5-2. Static System Messages
5.2.1 Static System Messages
Displayed
5.2.2 Alarm Messages
TROUBLESHOOTING
Table 5-3. Alarm Messages
Table 5-3. Alarm Messages Cont
5.2.3 Unsaved Initialization Messages
Table 5-4. Unsaved Failure or Error Messages
Table 5-5. Normal Unsaved Initialization Messages
5.2.4 Saved System Messages
Table 5-6. Saved System Messages
NOTE The LCD displays the following message whenever the POWER
5.3 VIEWING POWER UP DIAGNOSTIC TESTS
Responding to Error Messages
To return to Local Management
To execute a response option
FRENCH
POWER SUPPLY CORD
GERMAN
SPANISH
