Cabletron Systems 6H128-08 User manual

6H128-08 and 6H129-08
SmartSwitch 6000 Modules
User’s Guide
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COM
CPU
RESET
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RESET
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6H129-08
FAST ENET
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6H128-08
FAST ENET
9032364-02

6H128-08 and 6H129-08 User’s Guide i
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.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FORANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (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.
 1998 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9032364-02 September 1998
Cabletron Systems , SPECTRUM , LANVIEW , QuickSET , and SecureFast are registered
trademarks and SmartSwitch is a trademark of Cabletron Systems, Inc.
All other product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
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. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial environment.
This equipment uses, generates, and can radiate radio frequency energy and if not installed in
accordance with the operator’s manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause interference in which case the user
will be required to correct the interference at his own expense.
WARNING: Changes 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.
Only qualified personnel should install the 6H128-08 and the
6H129-08.

Notice
ii 6H128-08 and 6H129-08 User’s Guide
INDUSTRY CANADA NOTICE
This digital apparatus does not exceed the ClassA limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.
VCCI NOTICE
This is a Class A product based on the standard of the Voluntary Control Council for Interference by
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment,
radio disturbance may arise. When such trouble occurs, the user may be required to take corrective
actions.
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. BY UTILIZING THE ENCLOSED PRODUCT,YOU ARE AGREEING TO BECOME
BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND
THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IFYOU DO NOT
AGREE TO THE TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED
PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

Notice
6H128-08 and 6H129-08 User’s Guide iii
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE. You have the right to use only the one (1) copy of the Program provided in this
package subject to the terms and conditions of this License Agreement.
You may not copy, reproduce or transmit any part of the Program except as permitted by the
Copyright Act of the United States or as authorized in writing by Cabletron.
2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the
Program.
3. APPLICABLE LAW. This License Agreement shall 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 documentation and media).
CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED TO
YOU BY CABLETRON IN WRITING, EITHER EXPRESSED OR IMPLIED, INCLUDING
BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE
ACCOMPANYING WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.
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. BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR
ON THE DURATION OR LIMITATION OF IMPLIED WARRANTIES, IN SOME
INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO
YOU.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer
software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the
Commercial Computer Software - Restricted Rights Clause and its successors, and (c) in all respects
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 suc-
cessors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in sub-
paragraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at 252.227-7013.
Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867-0505.

Notice
iv 6H128-08 and 6H129-08 User’s Guide
SAFETY INFORMATION
CLASS 1 LASER TRANSCEIVERS
THE FE-100F3 FAST ETHERNET INTERFACE MODULE USES CLASS
1 LASER TRANSCEIVERS. READ THE FOLLOWING SAFETY
INFORMATION BEFORE
INSTALLING OR OPERATING THESE MODULES.
The Class 1 laser transceivers use an optical feedback loop to maintain Class 1 operation limits. This
control loop eliminates the need for maintenance checks or adjustments. The output is factory set, and
does not allow any user adjustment. Class 1 Laser transceivers comply with the following safety
standards:
• 21 CFR 1040.10 and 1040.11 U.S. Department of Health and Human Services (FDA).
• IEC Publication 825 (International Electrotechnical Commission).
• CENELEC EN 60825 (European Committee for Electrotechnical Standardization).
When operating within their performance limitations, laser transceiver output meets the Class 1
accessible emission limit of all three standards. Class 1 levels of laser radiation are not considered
hazardous.
SAFETY INFORMATION
CLASS 1 LASER TRANSCEIVERS
LASER RADIATION AND CONNECTORS
When the connector is in place, all laser radiation remains within the fiber. The maximum amount of
radiant power exiting the fiber (under normal conditions) is -12.6 dBm or 55 x 10
-6
watts.
Removing the optical connector from the transceiver allows laser radiation to emit directly from the
optical port. The maximum radiance from the optical port (under worst case conditions) is
0.8 W cm
-2
or 8 x 10
3
W m
2
sr-1.
Do not use optical instruments to view the laser output. The use of optical instruments to view
laser output increases eye hazard. When viewing the output optical port, power must be
removed from the network adapter.

Notice
6H128-08 and 6H129-08 User’s Guide v
DECLARATION OF CONFORMITY
Application of Council Directive(s): 89/336/EEC
73/23/EEC
Manufacturer’s Name: Cabletron Systems, Inc.
Manufacturer’s Address: 35 Industrial Way
PO Box 5005
Rochester, NH 03867
European Representative Name: Mr. J. Solari
European Representative Address: Cabletron Systems Limited
Nexus House, Newbury Business Park
London Road, Newbury
Berkshire RG13 2PZ, England
Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC
EC Directive 73/23/EEC
EN 55022
EN 50082-1
EN 60950
Equipment Type/Environment: Networking Equipment, for use in a
Commercial or Light
Industrial
Environment.
We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged
with this notice conforms to the above directives.
Manufacturer Legal Representative in Europe
Mr. Ronald Fotino Mr. J. Solari
___________________________________ ___________________________________
Full Name Full Name
Principal Compliance Engineer Managing Director - E.M.E.A.
___________________________________ ___________________________________
Title Title
Rochester, NH, USA Newbury, Berkshire, England
___________________________________ ___________________________________
Location Location

Notice
vi 6H128-08 and 6H129-08 User’s Guide

6H128-08 and 6H129-08 User’s Guide vii
CONTENTS
CHAPTER 1 INTRODUCTION
1.1 Using This Guide.........................................................................1-1
1.2 Structure of This Guide................................................................1-1
1.3 6H12X-08 Overview ....................................................................1-3
1.3.1 Connectivity ....................................................................1-3
1.3.2 Full Duplex Switched Ethernet (FDSE)...........................1-3
1.3.3 Runtime IP Address Discovery.......................................1-5
1.3.4 Management...................................................................1-5
1.3.5 Remote Monitoring (RMON)...........................................1-6
1.3.6 Switching Options...........................................................1-6
1.3.7 Standards Compatibility..................................................1-6
1.3.8 Year 2000 Compliant......................................................1-6
1.3.9 LANVIEW Diagnostic LEDs............................................1-7
1.4 Local Management Features.......................................................1-7
1.4.1 Broadcast Suppression...................................................1-7
1.4.2 Port Redirect Function....................................................1-7
1.4.3 Distributed Chassis Management...................................1-7
1.4.4 SmartTrunk.....................................................................1-8
1.5 Optional Features........................................................................1-8
1.6 Document Conventions.............................................................1-10
1.7 Getting Help...............................................................................1-11
1.8 Related Manuals........................................................................1-12
CHAPTER 2 NETWORK REQUIREMENTS
2.1 SmartTrunk..................................................................................2-1
2.2 10BASE-T Network .....................................................................2-1
2.3 100BASE-TX Network.................................................................2-2
2.4 100BASE-FX Fiber Optic Network ..............................................2-2
CHAPTER 3 INSTALLATION
3.1 Unpacking the 6H12X-08 ............................................................3-1
3.2 Installing 6H12X-08 Options........................................................3-2
3.3 Installing the 6H12X-08 into the 6C105 Chassis.........................3-3
3.4 Connecting to the Network..........................................................3-5
3.4.1 Connecting Fiber Optic Cables to Ports 1
Through 6 .......................................................................3-5
3.4.2 Connecting a Twisted Pair Segment to the FE-100TX...3-8
3.4.3 Connecting a Fiber Optic Segment to the
FE-100FX and FE-100F3 .............................................3-10
3.5 Completing the Installation........................................................3-12

Contents
viii 6H128-08 and 6H129-08 User’s Guide
CHAPTER 4 TROUBLESHOOTING
4.1 Using LANVIEW...........................................................................4-1
4.2 FE-100TX LED.............................................................................4-5
4.3 Troubleshooting Checklist............................................................4-6
4.4 Using the RESET Button .............................................................4-7
CHAPTER 5 LOCAL MANAGEMENT
5.1 Overview......................................................................................5-1
5.2 Local Management Keyboard Conventions.................................5-3
5.3 Management Terminal Setup.......................................................5-4
5.3.1 Console Cable Connection..............................................5-4
5.3.2 Management Terminal Setup Parameters ......................5-6
5.3.3 Telnet Connections .........................................................5-7
5.3.4 Monitoring an Uninterruptible Power Supply...................5-7
5.4 Accessing Local Management.....................................................5-8
5.4.1 Navigating Local Management Screens........................5-10
5.4.2 Selecting Local Management Menu Screen Items........5-12
5.4.3 Exiting Local Management Screens..............................5-12
5.5 The Main Menu Screen..............................................................5-14
5.6 Chassis Menu Screen................................................................5-15
5.7 Chassis Configuration Screen ...................................................5-17
5.7.1 Setting the IP Address...................................................5-20
5.7.2 Setting the Subnet Mask...............................................5-20
5.7.3 Setting the Chassis Date...............................................5-21
5.7.4 Setting the Chassis Time ..............................................5-22
5.7.5 Entering a New Screen Refresh Time...........................5-22
5.7.6 Setting the Screen Lockout Time..................................5-23
5.7.7 Setting the Operational Mode........................................5-23
5.8 SNMP Community Names Screen.............................................5-25
5.8.1 Establishing Community Names ...................................5-27
5.9 SNMP Traps Screen..................................................................5-28
5.9.1 Configuring the Trap Table............................................5-29
5.10 Chassis Environmental Screen..................................................5-30
5.11 Port Redirect Function Screen...................................................5-31
5.11.1 Displaying the Source and Destination Entries.............5-34
5.11.2 Changing Source and Destination Ports.......................5-34
5.12 Module Selection Screen...........................................................5-35
5.12.1 Selecting a Module........................................................5-37
5.13 Module Menu Screen.................................................................5-37
5.14 Module Configuration Menu Screen ..........................................5-38

Contents
6H128-08 and 6H129-08 User’s Guide ix
5.15 General Configuration Screen...................................................5-40
5.15.1 Setting the IP Address..................................................5-44
5.15.2 Setting the Subnet Mask...............................................5-46
5.15.3 Setting the Default Gateway.........................................5-46
5.15.4 Setting the TFTP Gateway IP Address.........................5-47
5.15.5 Setting the Module Date ...............................................5-48
5.15.6 Setting the Module Time...............................................5-48
5.15.7 Entering a New Screen Refresh Time ..........................5-49
5.15.8 Setting the Screen Lockout Time..................................5-50
5.15.9 Setting the Operational Mode.......................................5-50
5.15.10Setting the Management Mode.....................................5-51
5.15.11Configuring the COM Port ............................................5-52
5.15.11.1 Changing the Com Port Application.............5-54
5.15.12Clearing NVRAM ..........................................................5-55
5.15.13Enabling/Disabling IP Fragmentation ...........................5-56
5.16 SNMP Community Names Screen............................................5-56
5.16.1 Establishing Community Names...................................5-58
5.17 SNMP Traps Screen..................................................................5-60
5.17.1 Configuring the Trap Table...........................................5-61
5.18 Switch Configuration Screen.....................................................5-62
5.18.1 Setting the STA.............................................................5-65
5.18.2 Setting the Age Time ....................................................5-65
5.18.3 Setting (Enabling or Disabling) the Port Status ............5-66
5.19 Ethernet Interface Configuration................................................5-66
5.19.1 Configuring an FE-100FX/F3 Interface or a Port 7
or 8 FE-100FX/F3 Interface..........................................5-69
5.19.2 Configuring an FE-100TX Interface..............................5-70
5.19.3 Setting the FE-100TX Operational Mode......................5-70
5.19.4 Setting the FE-100TX Advertised Ability.......................5-70
5.20 Module Specific Configuration Menu.........................................5-71
5.21 System Resources Screen........................................................5-72
5.21.1 Setting the Reset Peak Utilization ................................5-74
5.22 Flash Download Screen ............................................................5-74
5.22.1 Image File Download Using TFTP................................5-76
5.22.2 Image File Download Using RUNTIME ........................5-77
5.22.3 Image File Download Using BootP...............................5-78
5.23 Port Redirect Function Screen ..................................................5-79
5.23.1 Displaying the Source and Destination Entries.............5-81
5.23.2 Changing Source and Destination Ports.......................5-81
5.24 Broadcast Suppression Screen.................................................5-82
5.24.1 Setting the Threshold....................................................5-84
5.24.2 Setting the Reset Peak Switch .....................................5-84
5.25 Module Statistics Menu Screen.................................................5-84

Contents
x 6H128-08 and 6H129-08 User’s Guide
5.26 Switch Statistics Screen.............................................................5-86
5.26.1 Using the Clear Counters Command ............................5-87
5.27 Interface Statistics Screen .........................................................5-88
5.27.1 Displaying Interface Statistics .......................................5-91
5.27.2 Using the Clear Counters Command ............................5-91
5.28 RMON Statistics Screen ............................................................5-92
5.28.1 Displaying RMON Statistics ..........................................5-95
5.28.2 Using the Clear Counters Command ............................5-96
5.29 Network Tools............................................................................5-96
5.29.1 Built-In Commands........................................................5-98
5.29.2 Special Commands.....................................................5-106
APPENDIX A SPECIFICATIONS
A.1 Device Specifications..................................................................A-1
A.2 Physical Properties ..................................................................... A-1
A.3 Environmental Requirements...................................................... A-1
A.4 Input/Output Ports.......................................................................A-2
A.5 COM Port Pinout Assignments ................................................... A-2
A.6 Regulatory Compliance............................................................... A-3
APPENDIX B FE-100TX, FE-100FX AND FE-100F3
SPECIFICATIONS
B.1 FE-100TX.................................................................................... B-1
B.1.1 Auto-Negotiation............................................................. B-2
B.2 FE-100FX.................................................................................... B-3
B.3 FE-100F3.................................................................................... B-4
APPENDIX C OPTIONAL INSTALLATIONS AND
MODE SWITCH BANK SETTINGS
C.1 Required Tools............................................................................C-1
C.2 Setting the Mode Switch .............................................................C-1
C.3 Installing Optional Fast Ethernet Interface Modules ...................C-4
INDEX

6H128-08 and 6H129-08 User’s Guide 1-1
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems 6H128-08 and 6H129-08
SmartSwitch 6000 Modules User’s Guide . This guide describes the
6H128-08 and 6H129-08 interface modules and provides information
concerning network requirements, installation, troubleshooting, and the
use of Local Management for these modules.
1.1 USINGTHIS GUIDE
Read through this guide completely to understand the features,
capabilities, and Local Management functions of the 6H128-08 and
6H129-08 modules. A general working knowledge of Ethernet and IEEE
802.3 type data communications networks and their physical layer
components is helpful when using these devices.
1.2 STRUCTURE OFTHIS GUIDE
This guide is organized as follows:
Chapter 1, Introduction , outlines the contents of this manual, describes
the features of the 6H12X-08, and provides instructions for getting
additional help. This chapter also includes a list of technology and user
guides that may help the user to set up and manage the 6H12X-08.
Chapter 2, Network Requirements , outlines the network requirements
that must be met before installing the 6H12X-08 into the 6C105
SmartSwitch 6000 chassis.
NOTE
The 6H128-08 and 6H129-08 have identical features and
functions with the exception that the 6H128-08 supports
multimode fiber, and the 6H129-08 supports single mode fiber
on their fixed ports.
If the information discussed in this document applies to both
the 6H128-08 and 6H129-08, they will be referred to as either
the 6H12X-08 or the module.If the information applies
specifically to one module, that module will be referred to by its
specific name, such as the 6H129-08.

Chapter 1: Introduction
1-2 6H128-08 and 6H129-08 User’s Guide
Chapter 3, Installation , provides instructions on how to install the
module in the chassis and connect segments to the device.
Chapter 4, Troubleshooting , details the 6H12X-08 LANVIEW LEDs
that enable quick diagnosis of network/operational problems.
Chapter 5, Local Management , describes how to access Local
Management and use the Local Management screens to manage the
6H12X-08 and 6C105 chassis.
Appendix A, Specifications , contains information on functionality and
operating specifications, connector pinouts, environmental requirements,
and physical properties.
Appendix B, FE-100TX, FE-100FX and FE-100F3 Specifications ,
contains information about FE-100TX pinouts and cable types used with
the FE-100FX and FE100-F3.
Appendix C, Optional Installations and Mode Switch Bank Settings ,
describes how to install optional Fast Ethernet Interface Modules and how
to set the mode switches.

6H12X-08 Overview
6H128-08 and 6H129-08 User’s Guide 1-3
1.3 6H12X-08 OVERVIEW
The 6H12X-08 (the 6H128-08 is shown in Figure 1-1) is a Fast Ethernet
interface module for the Cabletron Systems 6C105 chassis. The module
has six switched fiber optic ports and two optional ports for Fast Ethernet
Interface Modules.
The 6H128-08 has six multimode fiber optic 100BASE-FX switched
ports using SC connectors, while the 6H129-08 has six single mode fiber
optic 100BASE-FX switched ports also using SC connectors.
The 6H12X-08 supports IEEE 802.1D switching (bridging), Port Based
VLANs (IEEE 802.1Q), and Cabletron Systems SecureFast Switching
Virtual Network technology. The 6H12X-08 is used to connect individual
high-bandwidth user devices, such as workstations, and to provide a
central switching point for multiple 10/100 Mbps Fast Ethernet segments.
1.3.1 Connectivity
The 6H12X-08 connects to Ethernet networks or workstations through six
fiber optic ports with SC connections on the front panel. The 6H128-08
supports multimode fiber SC ports, and the 6H129-08 supports single
mode fiber SC ports. The multimode ports are IEEE 802.3u 100BASE-FX
compliant.
The 6H12X-08 has two front panel slots (ports 7 and 8) for optional Fast
Ethernet Interface Modules (FE-100TX, FE-100FX, and FE-100F3) to
support an uplink to 100 Mbps Fast Ethernet backbones or a high speed
connection to a local server using twisted pair, multimode or single mode
fiber optic cabling.
1.3.2 Full Duplex Switched Ethernet (FDSE)
Each switched Fast Ethernet port on the 6H12X-08 supports 100 Mbps
operation and can be configured to operate in Full Duplex Switched
Ethernet (FDSE) mode. FDSE allows each Fast Ethernet port to provide
up to 200 Mbps of throughput.

Chapter 1: Introduction
1-4 6H128-08 and 6H129-08 User’s Guide
Figure 1-1 The 6H12X-08
23640101
7
8
6H128-08
FAST ENET
COM
CPU
RESET
Reset Button
CPU LED
Port Status LEDs
Network Ports 1-6
Optional Fast Ethernet
Module Ports 7 and 8
COM Port
2
3
4
5
6
1
1
2
3
4
5
6

6H12X-08 Overview
6H128-08 and 6H129-08 User’s Guide 1-5
1.3.3 Runtime IP Address Discovery
This feature enables the 6H12X-08 to automatically accept an IP address
from a BootP server on the network into NVRAM without requiring a
user to enter an IP address through Local Management.
When the 6H12X-08 is connected to the network and powered up,
Runtime IP Address Discovery (RAD) checks the 6H12X-08 for an IP
address. If one has not been assigned (6H12X-08 IP address set to
0.0.0.0), RAD checks to see if any of the 6H12X-08 interfaces have a
link. If so, RAD sends out Reverse Address Resolution Protocol (RARP)
and BootP requests to obtain an IP address from a BootP or RARP server
on the network.
The RAD requests start out at an interval of 1 second and doubles after
every transmission until an interval of 300 seconds is reached. At this
point, the interval remains at 300 seconds. The RAD requests continue
until an IP address is received from a BootP or RARP server, or an IP
address is entered using Local Management.
1.3.4 Management
Management of the 6H12X-08 is accomplished using Local Management
tools or remote Simple Network Management Protocol (SNMP)
management stations. In-band remote management is possible using any
SNMP compliant Network Management Software. Out-of-band Local
Management is provided through the RJ45 COM port on the front panel
using a VT100 terminal, or a remote VT100 terminal emulator via a
modem connection, and in-band via a Telnet connection.
Local Management provides the ability to manage the 6H12X-08 and any
of the optional Fast Ethernet Interface Modules installed in ports 7 and 8
of the 6H12X-08.

Chapter 1: Introduction
1-6 6H128-08 and 6H129-08 User’s Guide
1.3.5 Remote Monitoring (RMON)
The 6H12X-08 supports all Ethernet RMON groups, which include
Statistics, Alarms, Events and History. These groups are enabled on all
ports by default.
Cabletron Systems RMON Actions is a vendor specific extension of
RMON and provides the ability to set an “Action” on any SNMP MIB
variable. TheAction can be triggered by any RMON Event and/orAlarm.
The Action can be, for example, to turn a MIB-2 interface off if a
broadcast threshold is crossed.
1.3.6 Switching Options
The 6H12X-08 provides IEEE 802.1D switching, IEEE 802.1Q, or
SecureFast Switching Virtual Network Services between all of the front
panel interfaces including Fast Ethernet Interface Modules. SecureFast
Switching and IEEE 802.1Q allow for migration to Virtual Network
technologies without requiring the replacement of existing equipment.
1.3.7 Standards Compatibility
The 6H12X-08 meets 802.3u specifications, and provides IEEE 802.1D
and DEC Spanning Tree Algorithm (STA) support to enhance the overall
reliability of the network and protect against “loop” conditions. The
6H12X-08 supports a wide variety of industry standard MIBs including
RFC 1213 (MIB II), RFC 1757 (RMON), RFC 1371 (RS232 MIB),
RFC 1493 (Bridge MIB) and RFC 1354 (FIB MIB). A full suite of
Cabletron Systems Enterprise MIBs provide a wide array of statistical
information to enhance troubleshooting.
1.3.8 Year 2000 Compliant
The 6H12X-08 has an internal clock that can maintain the time and date
beyond the year 1999.

Local Management Features
6H128-08 and 6H129-08 User’s Guide 1-7
1.3.9 LANVIEW Diagnostic LEDs
The various conditions of the LANVIEW diagnostic LEDs serve as
important troubleshooting aids. They provide an easy way to observe the
transmit and receive status of individual ports and overall network
operations such as system status, switching configuration, and Fast
Ethernet channel usage. Chapter 4 provides details about the 6H12X-08
LANVIEW LEDs.
1.4 LOCAL MANAGEMENT FEATURES
Local Management provides the tools that allow management of the
6H12X-08, any installed Fast Ethernet Interface Modules, and the 6C105
chassis, using SNMP compliant management tools.
1.4.1 Broadcast Suppression
Broadcast Suppression allows a user to set a desired limit of receive
broadcast frames per port/per second to be forwarded out the other ports
on the module up to the set limit. Any broadcast frames above this
specified limit are dropped. In the event that broadcast frames are being
suppressed, multicast and unicast frames continue to be switched.
1.4.2 Port Redirect Function
The port redirect function, also referred to as “Port Mirroring,” is a
troubleshooting tool used to map traffic from a single source port or
multiple source ports to a destination port(s) within the chassis. This
feature functions at the bit level, which allows all packets, including those
with errors, to be copied and sent to an analyzer or RMON probe. The
analyzer or RMON probe will see the data as if it is directly connected to
the LAN segment of the source port(s).
1.4.3 Distributed Chassis Management
From a management perspective, the 6C105 SmartSwitch 6000 chassis
can be viewed as a single entity with a single IP address. Its management
functions are distributed to all modules. This means a single module in
the chassis, such as the 6H12X-08, can be used to manage the entire
chassis, and any other attached module through Local Management,
SNMP, or Telnet applications.

Chapter 1: Introduction
1-8 6H128-08 and 6H129-08 User’s Guide
1.4.4 SmartTrunk
SmartTrunk, also referred to as SmartTrunking, is Cabletron Systems’
terminology for load balancing or load sharing. SmartTrunk technology
provides an easy-to-implement mechanism to group, or aggregate,
multiple physical links together to scale the backbone bandwidth beyond
the limitations of a single link. All links are user-configurable so
administrators can scale the backbone bandwidth by adding SmartTrunk
links. The SmartTrunk benefits are as follows:
• All purchased bandwidth is used.
• Distributed, resilient links increase reliability and performance.
• Multiple technologies are supported within a single trunk for
maximum flexibility.
For more information about SmartTrunk, refer to the Cabletron Systems
SmartTrunk User’s Guide .
1.5 OPTIONAL FEATURES
Options for the 6H12X-08 include Fast Ethernet Interface Modules to add
additional interface capability.
Cabletron Systems provides Fast Ethernet Interface Modules to support
uplinks to 100 Mbps Ethernet backbones or high speed connections to
servers. The Fast Ethernet Interface Modules are listed in Table 1-1.