Enterasys SmartSwitch 6E138-25 User manual

9032311-03
6E128-26, 6E138-25, 6E129-26 and 6E139-25
SmartSwitch 6000 Interface Modules
User’s Guide
COM
6E138-25
Ethernet
25
26
COM
6E128-26
Ethernet
1917
210 18
31119
41220
51321
61422
71523
81624
1917
210 18
31119
41220
51321
61422
71523
81624
CPU
CPU
COM
6E139-25
Ethernet
25
26
COM
6E129-26
Ethernet
1917
210 18
31119
41220
51321
61422
71523
81624
1917
210 18
31119
41220
51321
61422
71523
81624
CPU
CPU
6E128-26 6E138-25 6E129-26 6E139-25

9032311-03

6E128-26, 6E138-25, 6E129-26 and 6E139-25 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: 9032311-03 August 1998
Cabletron Systems is a registered trademark 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.
Printed on Recycled Paper

Notice
ii 6E128-26, 6E138-25, 6E129-26 and 6E139-25 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,YOUARE 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
6E128-26, 6E138-25, 6E129-26 and 6E139-25 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 DISCLAIMSALL 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
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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 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
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

6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide v
CONTENTS
CHAPTER 1 INTRODUCTION
1.1 Using This Guide.........................................................................1-1
1.2 Structure of This Guide................................................................1-1
1.3 6E12X-26 and 6E13X-25 Overview.............................................1-2
1.3.1 Connectivity ....................................................................1-4
1.3.2 Full Duplex Switched Ethernet........................................1-4
1.3.3 Management...................................................................1-4
1.3.4 Switching Options...........................................................1-5
1.3.5 Standards Compatibility..................................................1-5
1.3.6 LANVIEW Diagnostic LEDs............................................1-5
1.3.7 Year 2000 Compliant......................................................1-5
1.3.8 Runtime IP Address Discovery.......................................1-6
1.4 Local Management Features.......................................................1-6
1.4.1 Distributed Chassis Management...................................1-6
1.4.2 Remote Monitoring (RMON)...........................................1-7
1.4.3 Broadcast Suppression...................................................1-7
1.4.4 Port Redirect Function....................................................1-7
1.4.5 SmartTrunk .....................................................................1-8
1.4.6 Additional Local Management Functions........................1-8
1.5 Optional Features........................................................................1-9
1.6 Document Conventions.............................................................1-10
1.7 Getting Help...............................................................................1-10
1.8 Related Manuals........................................................................1-12
CHAPTER 2 NETWORK REQUIREMENTS
2.1 SmartTrunk..................................................................................2-1
2.2 10BASE-F Network .....................................................................2-2
2.3 FOIRL Network............................................................................2-2
2.4 100BASE-TX Network.................................................................2-2
2.5 100BASE-FX Fiber Optic Network ..............................................2-2
CHAPTER 3 INSTALLATION
3.1 Required Tools............................................................................3-1
3.2 Unpacking the 6E12X-26 and 6E13X-25.....................................3-1
3.3 6E12X-26 and 6E13X-25 Options...............................................3-2
3.4 Power Supply Requirements.......................................................3-2
3.5 Installing the 6E12X-26 and 6E13X-25 Into the 6C105 Chassis.3-3

Contents
vi 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
3.6 Connecting to the Network...........................................................3-5
3.6.1 Connecting Fiber Optic Cables to Ports 1
Through 24 of the Modules .............................................3-6
3.6.2 Connecting a UTP Segment to the FE-100TX................3-8
3.6.3 Connecting a Fiber Optic Segment to the
FE-100FX and FE-100F3................................................3-9
3.7 Completing the Installation.........................................................3-11
CHAPTER 4 TROUBLESHOOTING
4.1 Using LANVIEW...........................................................................4-1
4.2 FE-100TX LED.............................................................................4-4
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.................................5-2
5.3 Management Terminal Setup.......................................................5-3
5.3.1 Console Cable Connection..............................................5-3
5.3.2 Connecting an Uninterruptible Power Supply..................5-4
5.3.3 Management Terminal Setup Parameters ......................5-5
5.3.4 Telnet Connections .........................................................5-6
5.4 Accessing Local Management.....................................................5-7
5.4.1 Navigating Local Management Screens..........................5-8
5.4.2 Selecting Local Management Menu Screen Items........5-10
5.4.3 Exiting Local Management Screens..............................5-10
5.5 The Main Menu Screen..............................................................5-12
5.6 Chassis Menu Screen................................................................5-14
5.7 Chassis Configuration Screen ...................................................5-16
5.7.1 Setting the IP Address...................................................5-18
5.7.2 Setting the Subnet Mask...............................................5-19
5.7.3 Setting the Chassis Date...............................................5-20
5.7.4 Setting the Chassis Time ..............................................5-20
5.7.5 Entering a New Screen Refresh Time...........................5-21
5.7.6 Setting the Screen Lockout Time..................................5-21
5.7.7 Setting the Operational Mode........................................5-22
5.8 SNMP Community Names Screen.............................................5-24
5.8.1 Establishing Community Names ...................................5-25

Contents
6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide vii
5.9 SNMP Traps Screen..................................................................5-27
5.9.1 Configuring the Trap Table...........................................5-28
5.10 Chassis Environmental Screen .................................................5-29
5.11 Port Redirect Function Screen ..................................................5-30
5.11.1 Displaying the Source and Destination Entries.............5-32
5.11.2 Changing Source and Destination Ports.......................5-33
5.12 Module Selection Screen...........................................................5-34
5.12.1 Selecting a Module .......................................................5-35
5.13 Module Menu Screen ................................................................5-36
5.14 Module Configuration Menu Screen..........................................5-38
5.15 General Configuration Screen...................................................5-41
5.15.1 Setting the IP Address..................................................5-45
5.15.2 Setting the Subnet Mask...............................................5-46
5.15.3 Setting the Default Gateway.........................................5-47
5.15.4 Setting the TFTP Gateway IP Address.........................5-48
5.15.5 Setting the Module Date ...............................................5-48
5.15.6 Setting the Module Time...............................................5-49
5.15.7 Entering a New Screen Refresh Time ..........................5-50
5.15.8 Setting the Screen Lockout Time..................................5-50
5.15.9 Setting the Operational Mode.......................................5-51
5.15.10Setting the Management Mode.....................................5-52
5.15.11Configuring the COM Port ............................................5-53
5.15.12Changing the Com Port Application..............................5-55
5.15.13Clearing NVRAM ..........................................................5-56
5.15.14Enabling/Disabling IP Fragmentation ...........................5-57
5.16 SNMP Community Names Screen............................................5-57
5.16.1 Establishing Community Names...................................5-59
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 ............5-65
5.19 Ethernet Full Duplex Configuration Screen...............................5-66
5.19.1 Setting the Operation Mode..........................................5-68
5.20 Module Specific Configuration Menu Screen ............................5-69
5.21 System Resources Screen........................................................5-71
5.21.1 Setting the Reset Peak Utilization ................................5-73
5.22 High Speed Interface Configuration Screen (6E12X-26 Only)..5-74
5.22.1 Configuring an FE-100FX or FE-100F3........................5-77
5.22.2 Setting the FE-100FX and FE-100F3
Operational Mode .........................................................5-77
5.22.3 Configuring an FE-100TX.............................................5-78

Contents
viii 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
5.22.4 Setting the FE-100TX Operational Mode......................5-78
5.22.5 Setting the FE-100TX Advertised Ability.......................5-78
5.23 Flash Download Screen.............................................................5-79
5.23.1 Image File Download Using TFTP ................................5-82
5.23.2 Image File Download Using RUNTIME.........................5-83
5.23.3 Image File Download Using BootP................................5-84
5.24 Port Redirect Function Screen...................................................5-85
5.24.1 Displaying the Source and Destination Entries.............5-87
5.24.2 Changing Source and Destination Ports.......................5-87
5.25 Broadcast Suppression Screen .................................................5-89
5.25.1 Setting the Threshold....................................................5-90
5.25.2 Setting the Reset Peak Switch......................................5-91
5.26 Module Statistics Menu Screen .................................................5-91
5.27 Switch Statistics Screen.............................................................5-93
5.27.1 Using the Clear Counters Command ............................5-94
5.28 The Interface Statistics Screen..................................................5-95
5.28.1 Displaying Interface Statistics .......................................5-98
5.28.2 Using the Clear Counters Command ............................5-98
5.29 RMON Statistics Screen ............................................................5-99
5.29.1 Displaying RMON Statistics ........................................5-103
5.29.2 Using the Clear Counters Command ..........................5-103
5.30 Network Tools..........................................................................5-104
5.30.1 Built-in Commands......................................................5-105
5.30.2 Special Commands.....................................................5-114
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-3
A.6 Regulatory Compliance............................................................... A-3
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

Contents
6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide ix
APPENDIX C MODE SWITCH BANK SETTINGS AND
OPTIONAL INSTALLATIONS
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

Contents
x 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide

6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide 1-1
CHAPTER 1
INTRODUCTION
Welcome to the Cabletron Systems 6E128-26, 6E138-25, 6E129-26 and
6E139-25 SmartSwitch 6000 Interface Modules User’s Guide . This
guide describes the 6E128-26, 6E138-25, 6E129-26 and 6E139-25
Interface Modules and provides information concerning network
requirements, installation, troubleshooting, and the use of Local
Management.
1.1 USINGTHIS GUIDE
Read through this guide completely to understand the interface module
features, 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 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 6E12X-26 and 6E13X-25, provides instructions on
obtaining additional help and concludes with a list of related manuals.
Chapter 2, Network Requirements , explains the network requirements
to consider before installing the 6E12X-26 and 6E13X-25 into the 6C105
SmartSwitch 6000 chassis.
Chapter 3, Installation , provides instructions on how to install the
modules in the chassis and connect segments to the devices.
Chapter 4, Troubleshooting , details the 6E12X-26 and 6E13X-25
LANVIEW LEDs that enable you to quickly diagnose
network/operational problems.
NOTE
Unless noted differently, the information in this guide applies to
all four SmartSwitch 6000 interface modules, which are
referred to as either the “6E12X-26 and 6E13X-25” or the
“module(s)”.

Chapter 1: Introduction
1-2 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
Chapter 5, Local Management , describes how to access Local
Management and use the Local Management screens to manage the
6E12X-26 and 6E13X-25 interface modules and the 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 information
concerning cable types used with the FE-100FX and FE100-F3.
Appendix C, Mode Switch Bank Settings and Optional Installations ,
describes how to install optional Fast Ethernet Interface Modules and how
to set the Mode Switches.
1.3 6E12X-26 AND 6E13X-25 OVERVIEW
The 6E12X-26 and 6E13X-25, shown in Figure 1-1, are interface
modules for Cabletron Systems 6C105 SmartSwitch 6000 chassis.
The 6E12X-26 and 6E13X-25 are high-speed network switch devices that
support 802.1D switching (bridging), 802.1Q switching, and Cabletron
Systems SecureFast Switching Virtual Network technology. Ports 25 and
26 of the 6E12X-26 support optional Fast Ethernet Interface Modules and
can provide uplinks to 100BASE-TX or 100BASE-FX Fast Ethernet
networks. The 6E13X-25 is capable of being equipped with a High Speed
Interface Module (HSIM) that provides for additional connectivity to
other high speed networking technologies such as Asychronous Transfer
Mode (ATM), Wide Area Networks (WANs), Gigabit Ethernet and Fiber
Distributed Data Interface (FDDI).
The 6E12X-26 and 6E13X-25 can be used to connect individual
high-bandwidth user devices, such as workstations, and to provide a
central switching point for multiple Ethernet segments using devices such
as Cabletron Systems HubSTACK or other third party stackable devices.
NOTE
Figure 1-1 displays the 6E128-26 and 6E138-25.The
6E128-26 and the 6E129-26 are functionally identical, as are
the 6E138-25 and the 6E139-25.The only difference being that
the 6E129-26 and 6E139-25 modules support single mode
fiber optic cabling.

6E12X-26 and 6E13X-25 Overview
6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide 1-3
Figure 1-1 The 6E128-26 and 6E138-25
COM
6E138-25
Ethernet
25
26
COM
6E128-26
Ethernet
Fast Ethernet
Interface Module
Ports 25 and 26
System
LEDs
COM Ports
Network
Ports 1-24 Network
Ports 1-24
HSIM Slot
231101
Port Status
LEDs
1917
210 18
31119
41220
51321
61422
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81624
1917
210 18
31119
41220
51321
61422
71523
81624
CPU
CPU

Chapter 1: Introduction
1-4 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
1.3.1 Connectivity
The 6E128-26 and 6E138-25 connect to Ethernet networks or
workstations through 24 ST fiber optic ports on the front panel. These
ports support multimode fiber optic cables at lengths up to 2 kilometers.
The ports are IEEE 802.3 10BASE-F compliant.
The 6E129-26 and 6E139-25 connect to Ethernet networks or
workstations through 24 ST fiber optic ports on the front panel. These
ports support single mode fiber optic cable at lengths up to 5 kilometers.
The ports are FOIRL compliant.
The 6E12X-26 modules have two front panel slots (ports 25 and 26) for
optional Fast Ethernet Interface Modules to support an uplink to
100 Mbps Ethernet backbones or a high speed connection to a local
server.
The 6E13X-25 modules have one front panel slot for an optional High
Speed Interface Module to provide for additional connectivity to other
high speed networking technologies such as ATM, WANs, Gigabit
Ethernet and FDDI.
1.3.2 Full Duplex Switched Ethernet
Each switched Ethernet port supports full wire-speed Ethernet
communications and can be configured to operate in Full Duplex
Switched Ethernet mode, which provides 20 Mbps of bandwidth.
The optional Fast Ethernet Interface Modules for the 6E12X-26 can also
be configured to operate in Full Duplex Switched Ethernet mode, which
provides 200 Mbps of bandwidth.
1.3.3 Management
Management of the 6E12X-26 and 6E13X-25 is accomplished using
Local Management tools or remote SNMP management stations. Local
Management is accessible through the RS232 COM port on the front
panel using a local VT100 terminal, or a remote VT100 terminal via a
modem connection, and in-band via a Telnet connection. In-band remote
management is possible through any SNMP compliant Network
Management Software.

6E12X-26 and 6E13X-25 Overview
6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide 1-5
1.3.4 Switching Options
The 6E12X-26 and 6E13X-25 provide 802.1D switching (bridging),
802.1Q switching or SecureFast Switching Virtual Network Services
between all of the front panel interfaces including Fast Ethernet Interface
Modules and High Speed Interface Modules (HSIMs).
SecureFast switching and 802.1Q switching allow for future migration to
Virtual Network technologies without requiring the replacement of
existing equipment.
1.3.5 Standards Compatibility
The 6E12X-26 and 6E13X-25 are fully compliant with the IEEE 802.3
standard. The optional Fast Ethernet Interface Modules are fully
compliant with the IEEE 802.3u standard. The 6E12X-26 and 6E13X-25
provide IEEE 802.1D SpanningTreeAlgorithm (STA) support to enhance
the overall reliability of the network and protect against “loop”
conditions. The 6E12X-26 and 6E13X-25 support a wide variety of
industry standard MIBs including RFC 1213 (MIB II), RFC 1757
(RMON), 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.
1.3.6 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. Chapter 4 provides details about the 6E12X-26 and
6E13X-25 LANVIEW LEDs.
1.3.7 Year 2000 Compliant
The 6E12X-26 and 6E13X-25 have an internal clock that can maintain the
current time and date beyond the year 1999.

Chapter 1: Introduction
1-6 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
1.3.8 Runtime IP Address Discovery
This feature enables the modules 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 modules are connected to the network and powered up,
Runtime IP Address Discovery (RAD) checks the modules for an IP
address. If one has not yet been assigned (module and 6C105 chassis IP
address set to 0.0.0.0), RAD checks to see if any of the module 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. 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 or RARP
server, or an IP address is entered using Local Management.
1.4 LOCAL MANAGEMENT FEATURES
Local Management provides the tools that allow management of the
6E12X-26 and 6E13X-25, the Fast Ethernet Interface Modules, all
HSIMs, and the 6C105 chassis. Local Management for the 6E12X-26 and
6E13X-25 provides the features detailed in Sections 1.4.1 through 1.4.6.
1.4.1 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 6E12X-26 and 6E13X-25, can be used to manage
the entire chassis, and any other attached module through Local
Management, SNMP, or Telnet applications.

Local Management Features
6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide 1-7
1.4.2 Remote Monitoring (RMON)
The 6E12X-26 and 6E13X-25 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.
1.4.3 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.
1.4.4 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).

Chapter 1: Introduction
1-8 6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
1.4.5 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 links of any technology 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 .
1.4.6 Additional Local Management Functions
Local Management also allows the following tasks to be performed:
• Manage any module installed in the 6C105 via a single terminal
connection.
• Assign an IP address and subnet mask to the 6E12X-26 and 6E13X-25
modules and 6C105 chassis.
• Select a default gateway.
• Control local and remote access.
• Designate workstations to receive SNMP traps from the 6E12X-26
and 6E13X-25 modules and 6C105 chassis.
• Configure module specific SNMP MIB objects including the IETF
Bridge MIB objects.
Chapter 5 provides detailed information about Local Management of the
6E12X-26 and 6E13X-25, the optional Fast Ethernet Interface Modules
and the 6C105 chassis. The associated High Speed Interface Module
user’s guide provides detailed information about Local Management of
the applicable HSIM.