Cabletron Systems 2H28-08R User manual

2H28-08R
SmartSwitch 2208
User’s Guide
9032380-03

2H28-08R SmartSwitch 2208 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 FOR ANY 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: 9032380-03 October 1998
Cabletron Systems , SPECTRUM , S
ecure
F
ast
, QuickSet , and LANVIEW 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 perform installation
procedures.

Notice
ii 2H28-08R SmartSwitch 2208 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 FORA FULL REFUND.

Notice
2H28-08R SmartSwitch 2208 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
successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in
subparagraph (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 2H28-08R SmartSwitch 2208 User’s Guide
SAFETY INFORMATION
CLASS 1 LASER TRANSCEIVERS
THE FE-100F3 FAST ETHERNET INTERFACE MODULE, FPIM-05 AND
FPIM-07 FDDI PORT INTERFACE MODULES, AND APIM-29 ATM
PORT INTERFACE MODULE USE 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
2H28-08R SmartSwitch 2208 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 2H28-08R SmartSwitch 2208 User’s Guide

2H28-08R SmartSwitch 2208 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 2H28-08R Overview....................................................................1-2
1.3.1 Connectivity ....................................................................1-3
1.3.2 Switching Options...........................................................1-3
1.3.3 Full Duplex Switched Ethernet........................................1-3
1.3.4 SmartTrunk.....................................................................1-4
1.3.5 Runtime IP Address Discovery.......................................1-4
1.3.6 Management...................................................................1-5
1.3.7 Remote Monitoring (RMON)...........................................1-5
1.3.8 LANVIEW Diagnostic LEDs............................................1-5
1.3.9 Broadcast Suppression...................................................1-5
1.3.10 Port Redirect Function....................................................1-6
1.3.11 Year 2000 Compliance ...................................................1-6
1.3.12 Standards Compatibility..................................................1-6
1.4 Optional Features........................................................................1-7
1.5 Document Conventions...............................................................1-8
1.6 Getting Help.................................................................................1-9
1.7 Related Manuals........................................................................1-10
CHAPTER 2 NETWORK REQUIREMENTS
2.1 SmartTrunk..................................................................................2-1
2.2 100BASE-FX Fiber Optic Network ..............................................2-2
2.3 100BASE-TX Network.................................................................2-3
CHAPTER 3 INSTALLATION
3.1 Required Tools............................................................................3-1
3.2 Unpacking the 2H28-08R............................................................3-1
3.3 Installing Optional Equipment......................................................3-2
3.4 Installing the 2H28-08R...............................................................3-3
3.4.1 Tabletop or Shelf Installation ..........................................3-3
3.4.2 Rackmount Installation ...................................................3-4
3.4.3 Connecting Power to the Device ....................................3-7
3.5 Connecting to the Network..........................................................3-8
3.5.1 Connecting Fiber Optic Cables to Ports 1 Through 6.....3-8
3.5.2 Connecting a UTP Segment to the FE-100TX..............3-11
3.5.3 Connecting a Fiber Optic Segment to the
FE-100FX and FE-100F3 .............................................3-13
3.6 Completing the Installation........................................................3-15

Contents
viii 2H28-08R SmartSwitch 2208 User’s Guide
CHAPTER 4 TROUBLESHOOTING
4.1 Using LANVIEW...........................................................................4-1
4.2 FE-100TX LED.............................................................................4-4
4.3 Troubleshooting Checklist............................................................4-5
4.4 Using the RESET Button .............................................................4-6
CHAPTER 5 LOCAL MANAGEMENT
5.1 Overview......................................................................................5-1
5.2 Local Management Keyboard Conventions.................................5-2
5.3 Management Terminal Setup.......................................................5-3
5.3.1 Console Cable Connection..............................................5-4
5.3.2 Management Terminal Setup Parameters ......................5-5
5.3.3 Telnet Connections .........................................................5-6
5.3.4 Monitoring an Uninterruptible Power Supply...................5-6
5.4 Accessing Local Management.....................................................5-8
5.4.1 Navigating Local Management Screens..........................5-9
5.4.2 Selecting Local Management Menu Screen Items........5-11
5.4.3 Exiting Local Management Screens..............................5-11
5.5 Device Menu Screen..................................................................5-13
5.6 Device Configuration Menu Screen ...........................................5-14
5.7 General Configuration Screen ...................................................5-16
5.7.1 Setting the IP Address...................................................5-20
5.7.2 Setting the Subnet Mask...............................................5-21
5.7.3 Setting the Default Gateway..........................................5-22
5.7.4 Setting the TFTP Gateway IP Address .........................5-23
5.7.5 Setting the Device Date.................................................5-23
5.7.6 Setting the Device Time................................................5-24
5.7.7 Entering a New Screen Refresh Time...........................5-24
5.7.8 Setting the Screen Lockout Time..................................5-25
5.7.9 Setting the Operational Mode........................................5-25
5.7.10 Configuring the COM Port.............................................5-27
5.7.10.1 Changing the COM Port Application.............5-29
5.7.11 Clearing NVRAM...........................................................5-30
5.8 SNMP Community Names Screen.............................................5-31
5.8.1 Establishing Community Names ...................................5-33
5.9 SNMP Traps Screen..................................................................5-34
5.9.1 Configuring the Trap Table............................................5-35
5.10 Switch Configuration Screen......................................................5-36
5.10.1 Setting the STA.............................................................5-38
5.10.2 Setting the Age Time Field............................................5-39
5.10.3 Setting (Enabling or Disabling) the Port Status.............5-39

Contents
2H28-08R SmartSwitch 2208 User’s Guide ix
5.11 Ethernet Interface Configuration................................................5-40
5.11.1 Configuring an FE-100FX Interface or a
Port 7 or 8 FE-100FX/F3 Interface ...............................5-42
5.11.2 Configuring an FE-100TX Interface..............................5-42
5.11.3 Setting the FE-100TX Operational Mode......................5-43
5.11.4 Setting the FE-100TX Advertised Ability.......................5-43
5.12 Device Specific Configuration Menu Screen.............................5-44
5.13 System Resources Screen........................................................5-46
5.13.1 Setting the Reset Peak Switch Utilization.....................5-48
5.14 Flash Download Screen ............................................................5-48
5.14.1 Image File Download Using TFTP................................5-50
5.14.2 Image File Download Using Runtime ...........................5-51
5.14.3 Image File Download Using BootP...............................5-52
5.15 Port Redirect Function Screen ..................................................5-53
5.15.1 Displaying the Source and Destination Entries.............5-55
5.15.2 Changing Source and Destination Ports.......................5-56
5.16 Broadcast Suppression Screen.................................................5-57
5.16.1 Setting the Threshold....................................................5-59
5.16.2 Setting the Reset Peak Switch .....................................5-59
5.17 Device Statistics Menu Screen..................................................5-60
5.18 Switch Statistics Screen............................................................5-61
5.18.1 Using the Clear Counters Command............................5-63
5.19 Interface Statistics Screen.........................................................5-63
5.19.1 Displaying Interface Statistics.......................................5-66
5.19.2 Using the Clear Counters Command............................5-67
5.20 RMON Statistics Screen............................................................5-67
5.20.1 Displaying RMON Statistics..........................................5-71
5.20.2 Using the Clear Counters Command............................5-71
5.21 Network Tools............................................................................5-72
5.21.1 Built-in Commands .......................................................5-74
5.21.2 Special Commands.......................................................5-82
APPENDIX A SPECIFICATIONS
A.1 Device Specifications ..................................................................A-1
A.2 Physical Properties......................................................................A-1
A.3 Electrical Specifications...............................................................A-1
A.4 Environmental Requirements......................................................A-2
A.5 Input/Output Ports .......................................................................A-2
A.6 COM Pinout Assignments ...........................................................A-2
A.7 Regulatory Compliance...............................................................A-3

Contents
x 2H28-08R SmartSwitch 2208 User’s Guide
APPENDIX B FE-100TX, FE-100FX AND FE-100F3
SPECIFICATIONS
B.1 FE-100TX.................................................................................... B-1
B.2 FE-100FX.................................................................................... B-2
B.3 FE-100F3....................................................................................B-3
APPENDIX C OPTIONAL INSTALLATIONS AND
MODE SWITCH BANK SETTINGS
C.1 Required Tools............................................................................C-2
C.2 Removing the Chassis Cover .....................................................C-2
C.2.1 Setting the Mode Switch.................................................C-4
C.3 Installing Optional Fast Ethernet Interface Modules ...................C-6
INDEX

2H28-08R SmartSwitch 2208 User’s Guide 1-1
CHAPTER 1
INTRODUCTION
Welcome to the 2H28-08R SmartSwitch 2208 User’s Guide .
This guide provides the necessary documentation to install and operate
the 2H28-08R SmartSwitch 2208 devices and provides information
concerning network requirements, troubleshooting, and the use of Local
Management.
1.1 USINGTHIS GUIDE
Read through this guide to completely understand the 2H28-08R
capabilities and Local Management functions. A general working
knowledge of Ethernet and IEEE 802.3 type data communications
networks and their physical layer components is helpful when using this
device.
1.2 STRUCTURE OFTHIS GUIDE
This guide is organized as follows:
Chapter 1, Introduction , outlines the contents of this manual and briefly
describes the 2H28-08R features. Directions about how to obtain
additional help and a list of related manuals are also included.
Chapter 2, Network Requirements , explains the network requirements
that must be met before installing the 2H28-08R.
Chapter 3, Installation , provides instructions on how to install the
2H28-08R and connect segments to the device.
Chapter 4, Troubleshooting , describes the function of the LANVIEW
LEDs, which can help to quickly diagnose network/operational problems.
Chapter 5, Local Management , describes how to access and use Local
Management to configure and manage the 2H28-08R.
Appendix A, Specifications , contains information on functional and
operational specifications, connector pinouts, environmental
requirements, and physical properties.

Chapter 1: Introduction
1-2 2H28-08R SmartSwitch 2208 User’s Guide
Appendix B, FE-100TX, FE-100FX and FE-100F3 Specifications ,
contains information about FE-100TX pinouts and information
concerning cable types used with the FE-100FX and FE-100F3.
Appendix C, Optional Installations and Mode Switch Bank Settings ,
describes how to install optional Fast Ethernet Interface Modules and how
to set the Mode Switch.
1.3 2H28-08R OVERVIEW
The 2H28-08R (Figure 1-1) is a switching device that provides six fixed
100BASE-FX Fast Ethernet ports using multimode fiber optic cable. Each
Ethernet segment supports 802.1D switching (bridging), IEEE 802.1Q
switching, and Cabletron Systems SecureFast SwitchingVirtual Network
technology.
Figure 1-1 2H28-08R
The 2H28-08R also has two slots (7 and 8) for optional Fast Ethernet
Interface Modules.
The device bridges each Ethernet segment to the other switch ports, and
to the optional interface modules in port slots 7 and 8. The optional Fast
Ethernet Interface Modules provide uplinks to 100BASE-TX or
100BASE-FX Fast Ethernet networks, and connectivity to 10BASE-T.
Port LEDs Switched Ethernet Ports
2380_02
System LEDs
COM Port
RESET Button
Optional Fast
Ethernet Interface
Module Ports 7 & 8
Receive (RX)
Transmit (TX)
LEDs

2H28-08R Overview
2H28-08R SmartSwitch 2208 User’s Guide 1-3
The 2H28-08R may be used as a tabletop unit or can be installed in a
standard 19-inch rack using the supplied rack mounting hardware.
The 2H28-08R has two power supplies. Both are universal ac power
supplies with automatic voltage sensing that allows operation using
100–125 or 200–240 Vac, 50/60 Hz. The power supplies load share 50%
(+/-5%) of the power required by the device. If one power supply fails, the
remaining power supply assumes the entire load of the device without
interruption to network traffic. Each power supply module supports its
own ac input connection, which allows the user to connect each power
supply to a different ac power circuit.
1.3.1 Connectivity
The six fixed ports on the 2H28-08R connect to Ethernet networks or
workstations using SC fiber optic connectors.
The 2H28-08R has two front panel slots (ports 7 and 8) for optional Fast
Ethernet Interface Modules to support an uplink to 100 Mbps Fast
Ethernet backbones, a high speed connection to a local server, or a
connection to 10BASE-T.
1.3.2 Switching Options
The 2H28-08R provides traditional switching (IEEE 802.1D bridging),
IEEE 802.1Q, or SecureFast SwitchingVirtual Network Services between
all of the front panel interfaces including the optional Fast Ethernet
Interface Modules. SecureFast Switching and IEEE 802.1Q allow for
migration to Virtual Network technologies without requiring the
replacement of existing equipment.
1.3.3 Full Duplex Switched Ethernet
All the ports for the 2H28-08R, including the optional modules, can be
configured to operate in Full Duplex Switched Ethernet mode, which
provides 200 Mbps of throughput.

Chapter 1: Introduction
1-4 2H28-08R SmartSwitch 2208 User’s Guide
1.3.4 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 .
1.3.5 Runtime IP Address Discovery
This feature enables the 2H28-08R to automatically accept an IP address
from a Bootstrap Protocol (BootP) server on the network into NVRAM
without requiring a user to enter an IP address through Local
Management.
When the 2H28-08R is connected to the network and powered up,
Runtime IP Address Discovery (RAD) checks the 2H28-08R for an IP
address. If one has not been assigned (2H28-08R default IP address set to
0.0.0.0), RAD checks to see if any of the 2H28-08R interfaces have a link.
If so, RAD sends out ReverseAddress Resolution Protocol (RARP) and
BootP requests to obtain an IP address from a BootP server on the
network.
The RAD requests start out at an interval of 1 second. The interval then
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 server, or
an IP address is entered using Local Management.

2H28-08R Overview
2H28-08R SmartSwitch 2208 User’s Guide 1-5
1.3.6 Management
Management of the 2H28-08R is accomplished using SNMP compliant
management tools for in-band Local Management. Out-of-band Local
Management is provided through the RJ45 COM port on the front panel
using a VT100 terminal or a VT100 terminal emulator. In-band remote
management is possible through any SNMP compliant Network
Management Software.
Local Management provides the ability to manage the 2H28-08R and any
of the optional Fast Ethernet Interface Modules installed in ports 7 and 8.
1.3.7 Remote Monitoring (RMON)
The 2H28-08R 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. The Action can be triggered by any RMON Event and/orAlarm.
An example of anAction would be to turn off a MIB-2 interface if a
broadcast threshold is crossed.
1.3.8 LANVIEW Diagnostic LEDs
LANVIEW diagnostic LEDs serve as an important troubleshooting aid by
providing an easy way to observe the status of individual ports and overall
network operations.
1.3.9 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.

Chapter 1: Introduction
1-6 2H28-08R SmartSwitch 2208 User’s Guide
1.3.10 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).
1.3.11 Year 2000 Compliance
The 2H28-08R has an internal clock that can maintain the time and date
beyond the year 1999.
1.3.12 Standards Compatibility
The 2H28-08R is fully compliant with the IEEE 802.3 standard. The
optional Fast Ethernet Interface Modules are fully compliant with the
IEEE 802.3u standard.The 2H28-08R provides IEEE 802.1D Spanning
Tree Algorithm (STA) support to enhance the overall reliability of the
network and protect against “loop” conditions. The 2H28-08R supports a
wide variety of industry standard MIBs including RFC 1213 (MIB II),
RFC 1757 (RMON), RFC 1493 (Bridge MIB), RFC 1354 (FIB MIB),
RFC 1191 (Path MTU Discovery), and RFC 1317 (RS232 MIB). A full
suite of Cabletron Systems Enterprise MIBs provide a wide array of
statistical information to enhance troubleshooting.

Optional Features
2H28-08R SmartSwitch 2208 User’s Guide 1-7
1.4 OPTIONAL FEATURES
Optional Fast Ethernet Interface Modules are available from Cabletron
Systems to support uplinks to 100 Mbps Fast Ethernet backbones or high
speed connections to local servers. The Fast Ethernet Interface Modules
are listed in Table 1-1.
.
Table 1-1 Fast Ethernet Interface Modules
P/N Description Application
FE-100TX Uses RJ45
connector
Supports Category 5 Unshielded Twisted Pair
(UTP) cabling, which has an impedance of 85 to
111 ohms.
FE-100FX Uses SC
connector Supports multimode fiber optic cabling.
FE-100F3 Uses SC
connector Supports single mode fiber optic cabling.

Chapter 1: Introduction
1-8 2H28-08R SmartSwitch 2208 User’s Guide
1.5 DOCUMENT CONVENTIONS
The following conventions are used throughout this document:
NOTE
Note symbol. Calls the reader’s attention to any item of
information that may be of special importance.
TIP
Tip symbol. Conveys helpful hints concerning procedures or
actions.
!
CAUTION
Caution symbol. Contains information essential to avoid
damage to the equipment.
Electrical Hazard Warning symbol.Warns against an action
that could result in personal injury or death due to an electrical
hazard.
WARNING
Warning symbol.Warns against an action that could result in
personal injury or death.