Cabletron Systems ETWMIM User Manual

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Page 1

ETWMIM

ETHERNET / TOKEN RING / WAN

MEDIA INTERFACE MODULE

USER’S GUIDE

CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505

Page 2

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.

CAUTION: THIS T1 CARD IS INTENDED TO BE INSTALLED IN CSA CERTIFIED/ UL LISTED EQUIPMENT BY A QUALIFIED SERVICE PERSON. CHECK THE EQUIPMENT OPERATION/INSTALLATION INSTRUCTIONS AND/OR EQUIPMENT MANUFACTURER TO VERIFY/CONFIRM YOUR EQUIPMENT IS SUITABLE FOR INSTALLED APPLICATION CARDS.

CAUTION: ALWAYS DISCONNECT T1 BOARD (THE ONE WITH THE TELEPHONE PLUG/JACK) FROM THE TELEPHONE SYSTEM WHEN INSTALLING OR WHEN THE COVERS ARE REMOVED FROM THE HOST PRODUCT.

CAUTION: APPLY THE ENCLOSED ADHESIVE WARNING LABEL TO THE OUTSIDE OR INSIDE OF THE EQUIPMENT ENCLOSURE ADJACENT TO THE T1 CARD.

Order Number: 9030661-01 August, 1994

ETWMIM, MMAC, T1-SRM, EPIM-T, EPIM-X, EPIM-F1/F2, EPIM-F3, EPIM-C TPT-T, FOT-F, FOT-F3

Systems, Inc.

Spectrum IBM VT200 Compuserve Ethernet

, and

LANVIEW

is aregistered trademark of International Business Machines Corporation.

and

VT300

is a registered trademark of Compuserve, Inc.

is a trademark of Xerox Corporation.

, and

Flexible Network Bus

are registered trademarks of Cabletron Systems, Inc.

are trademarks of Digital Equipment Corporation.

are trademarks of Cabletron

Printed on recycled paper

Page 3

NOTICE

FCC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. 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.

IC NOTICE

The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The department does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power facility, telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

CAUTION: USERS SHOULD NOT ATTEMPT TO MAKE SUCH CONNECTIONS THEMSELVES, BUT SHOULD CONTACT THAT APPROPRIATE ELECTRIC INSPECTION AUTHORITY, OR ELECTRICAN, AS APPROPRIATE.

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Industry Canada.

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.

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NOTICE

CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT

IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user, and Cabletron Systems, Inc.

(“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained in firmware, chips or other media. 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. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

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 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABLITY 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 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 WARRANTEES IN SOME INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

. IN NO EVENT SHALL

iii

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NOTICE

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 5222719 (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 52.2277013 (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

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CONTENTS

CHAPTER 1 INTRODUCTION

1.1 USING THIS MANUAL............................................................1-1

1.2 GETTING HELP........................................................................1-2

1.3 OVERVIEW................................................................................1-2

1.4 ETWMIM FEATURES ..............................................................1-2

1.5 BRIDGING AND THE ETWMIM.............................................1-5

1.5.1 Remote Bridging ..........................................................1-6

1.5.2 Transparent Bridging ..................................................1-6

1.5.3 Source Route Bridging .................................................1-7

1.5.4 CSMA/CD To Token Ring Translation .......................1-8

1.6 SPANNING TREE ALGORITHM.............................................1-8

CHAPTER 2 INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.1 MMAC REQUIREMENTS ........................................................2-1

2.2 COM 2 PORT AND TERMINAL REQUIREMENTS............... 2-2

2.3 OPERATING SPECIFICATIONS.............................................2-5

2.3.1 Environmental Requirements .....................................2-5

2.3.2 Safety ............................................................................ 2-6

2.3.3 Physical .........................................................................2-6

CHAPTER 3 INSTALLING THE ETWMIM

3.1 UNPACKING THE ETWMIM ..................................................3-1

3.2 SETTING THE CONFIGURATION SWITCHES....................3-2

3.2.1 Setting the Switch Bank (SW2) ...................................3-3

3.2.2 Ethernet Connection Switch (SW4) ............................3-4

3.3 INSTALLING THE ETWMIM.................................................. 3-4

3.4 INSTALLING AN EPIM............................................................3-5

3.5 INSTALLING THE T1-SRM.....................................................3-6

3.6 CONFIGURING THE LBO SWITCH.......................................3-8

3.7 CONNECTING TO LOCAL MANAGEMENT .........................3-9

3.8 FINISHING THE INSTALLATION.........................................3-9

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CONTENTS

CHAPTER 4 USING LANVIEW

4.1 SYSTEM STATUS LEDs ...........................................................4-2

4.2 ETHERNET STATUS LEDs......................................................4-2

4.3 TOKEN RING STATUS LEDs ..................................................4-4

4.4 T1-SRM PORT STATUS LEDs..................................................4-5

4.5 SYNCHRONOUS PORT STATUS LEDs..................................4-6

CHAPTER 5 LOCAL MANAGEMENT

5.1 TERMINAL CONFIGURATION...............................................5-1

5.2 ACCESSING LOCAL MANAGEMENT....................................5-2

5.3 COMMUNITY NAME TABLE ..................................................5-3

5.3.1 Accessing the Community Name Table Screen ..........5-4

5.3.2 Community Name Table Screen Fields .......................5-4

5.3.3 Editing the Community Name Table Screen ..............5-5

5.4 CONFIGURING THE ETWMIM...............................................5-6

5.4.1 Accessing the Configuration Screen ............................5-7

5.4.2 Configuration Screen Fields ........................................5-7

5.4.3 Setting the IP Address Table and Subnet Mask Field 5-8

5.5 SETTING THE TRAP TABLE...................................................5-9

5.5.1 ETWMIM Trap Table Screen .......................................5-9

5.5.2 Trap Table Screen Fields ...........................................5-10

5.5.3 Configuring the Trap Table .......................................5-10

5.6 SNMP TOOLS ..........................................................................5-11

5.6.1 Accessing The SNMP Tools Screen ...........................5-11

5.6.2 SNMP Tools Screen Fields .........................................5-12

5.6.3 The Security Access Level ..........................................5-13

5.6.4 Getting And Setting OIDs ..........................................5-14

5.6.5 Scrolling Through MIB OIDs .....................................5-16

5.7 CONFIGURING WAN PHYSICAL ATTRIBUTES................5-18

5.7.1 Accessing the WAN Configuration Screen ................5-18

5.7.2 WAN Physical Configuration Screen Fields .............5-18

5.7.3 Setting the Active WAN Port Field ...........................5-20

5.7.4 Setting the SyncPort Type Field ................................5-21

5.7.5 Setting WAN Physical Configuration Screen Fields 5-21

5.7.6 Setting the T1 Timeslot Configuration Table ...........5-21

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CONTENTS

5.8 WAN INTERFACE CONFIGURATION SCREEN................5-24

5.8.1 WAN Interface Configuration Screen Fields ............5-25

5.8.2 Configuring PPP Interfaces .......................................5-27

5.8.3 Configuring Frame Relay Interfaces .........................5-28

5.8.4 Setting the Data Compression Field .........................5-29

5.8.5 Setting the Max Xmit Unit Field ..............................5-30

5.8.6 Setting the Line Coding Field ...................................5-30

5.9 COMMAND LINE INTERFACE (CLI)...................................5-31

APPENDIX A EPIM SPECIFICATIONS

A.1 EPIM CABLING GUIDELINES...............................................A-1

A.1.1 Twisted Pair Cable Requirements for the EPIM-T.....A-1

A.1.2 Multimode Fiber Optic Cable Requirements for the

EPIM-F1 and EPIM-F2 ................................................A-3

A.1.3 Single Mode Fiber Optic Cable Requirements for

the EPIM-F3..................................................................A-4

A.1.4 Thin-Net Cable Requirements for the EPIM-C...........A-5

A.1.5 AUI Cable Requirements for the EPIM-A

and EPIM-X...................................................................A-6

A.2 EPIM CONNECTOR SPECIFICATIONS................................A-7

A.2.1 EPIM-T (10BASE-T Twisted Pair Port).......................A-7

A.2.2 EPIM-F1 and EPIM-F2 (Multimode Fiber Optic

Ports)..............................................................................A-8

A.2.3 EPIM-F3 (Single Mode Fiber Optic Port)....................A-9

A.2.4 EPIM-C (BNC Port)....................................................A-11

A.2.5 EPIM-A and EPIM-X (AUI Ports)..............................A-12

A.3 CONNECTING AN EPIM TO THE ETHERNET

NETWORK...............................................................................A-12

A.3.1 Connecting an AUI Cable to an EPIM-A...................A-13

A.3.2 Connecting an Unshielded Twisted Pair Segment

to an EPIM-T...............................................................A-14

A.3.3 Connecting a Fiber Optic Link Segment

to an EPIM-F1, EPIM-F2, or EPIM-F3 .....................A-15

A.3.4 Connecting a Thin-Net Segment to an EPIM-C........A-18

A.3.5 Connecting an AUI Cable to an EPIM-X...................A-20

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CONTENTS

APPENDIX B DOWNLOADING AN IMAGE FILE

B.1 GETTING STARTED................................................................B-2

B.2 SETTING UP A UNIX WORKSTATION AS A RARP

SERVER.....................................................................................B-3

B.3 STANDARD LOCAL DOWNLOAD..........................................B-5

B.4 REMOTE RUNTIME DOWNLOAD.........................................B-6

APPENDIX C FCC PART 68 - USER’S INFORMATION

INDEX

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CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems

Ring / WAN Media Interface Module User’s Manual

is designed to serve as an installation and reference guide for the ETWMIM and to explain its capabilities and features.

You should read through this manual to gain a full understanding of the ETWMIM and its capabilities. We assume that you have a general working knowledge of Ethernet (IEEE 802.3), Token Ring (IEEE

802.5), and WAN type data communications networks and their physical layer components.

1.1 USING THIS MANUAL

Chapter 1, explains wide area transmission, bridge ﬁltering , and use of the bridge in multiple bridge environments.

Chapter 2, hardware, location, and environmental requirements that must be met before you install the ETWMIM.

Introduction,

Installation Requirements/Speciﬁcations,

discusses the features of the ETWMIM and

ETWMIM Ethernet / Token

. This manual

lists

Chapter 3, installing the ETWMIM, optional EPIM, and optional T1-SRM.

Chapter 4, built-in visual diagnostic and status monitoring system.

Chapter 5, ETWMIM Local Management.

Appendix A, and EPIM connection instructions.

Appendix B, downloading instructions, and guidelines for setting up a UNIX workstation to support an image ﬁle download.

Appendix C,

Installing the ETWMIM,

Using LANVIEW

Local Management

EPIM Speciﬁcations

Downloading an Image File

FCC 68

, contains the FCC 68 rules for the ETWMIM.

, describes how to use Cabletron Systems

, describes how to access and use the

contains instructions for

, contains cabling speciﬁcations,

, provides basic TFTP code

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INTRODUCTION

1.2 GETTING HELP

If you need additional support relating to the ETWMIM, or if you have any questions, comments, or suggestions relating to this manual, contact Cabletron Systems Technical Support. Before calling, please have the following information ready:

• The product type (e.g., ETWMIM)

• The product serial number.

Note:

Locate the serial number on the ETWMIM front panel.

You can contact Cabletron Systems Technical Support by:

Phone: Monday through Friday

between 8 A.M. and 8 P.M. EST

at (603) 332-9400. CompuServe: GO CTRON from any ! prompt Internet mail: [email protected]

1.3 OVERVIEW

The ETWMIM module resides in an MMAC hub, and acts as an interface between various Ethernet and Token Ring LANs, as well as providing a synchronous serial WAN port. Cabletron also offers an optional T1-SRM module for the ETWMIM. The T1-SRM provides an RJ-48C interface to provide wide area network connectivity.

The ETWMIM can bridge for up to 26 ports at one time — 2 local networks (1 Ethernet and 1 Token Ring), and up to 24 WAN timeslots using the optional T1-SRM.

1.4 ETWMIM FEATURES

LANVIEW

LANVIEW is Cabletron Systems’ visual diagnostic and monitoring system. LEDs on the ETWMIM front panel, and optional connection modules, indicate module and physical layer status.

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INTRODUCTION

Hot Swapping

Like all Cabletron Systems Media Interface Modules (MIMs), you can remove the ETWMIM from, and insert it into, an MMAC without turning off the power to the rest of the modules in the hub.

Flash EEPROMs

The ETWMIM uses Flash Electrically Erasable Programmable Read Only Memory (EEPROM) that allows you to download new and updated ﬁrmware using Remote LANVIEW/Windows, version 2.3 or later or any device using BOOTP or TFTP protocols.

The ETWMIM supports the following download applications:

•

Standard Download

- the ETWMIM automatically disables

management while you download the new ﬁrmware image.

Runtime Download

•

- the ETWMIM continues to operate without interruption while you download the new ﬁrmware image. The ETWMIM stores the new image in Flash memory. It continues to operate with the old ﬁrmware image executing in processor memory until you reset the ETWMIM.

Management

An RS-232 port gives you direct access to ETWMIM Local Management. Local Management provides unique set and control capabilities for your ETWMIM. You access Local Management through the COM 2 port using a VT series terminal, or a computer running VT emulation software.

The ETWMIM also supports SNMP (Simple Network Management Protocol) network management tools such as Cabletron Systems’ SPECTRUM products.

COM 1 / COM 2

The COM 1 port is reserved for future ETWMIM enhancements. The COM 2 port provides access to ETWMIM Local Management.

Ethernet Connectivity

The ETWMIM allows for various connectivity options. From an Ethernet standpoint, you can connect either through Channel A (the Ethernet Channel) on your MMAC backplane, or from the optional EPIM connection on the front panel.

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INTRODUCTION

Token Ring Connectivity

In addition to backplane Ethernet connectivity, the ETWMIM provides Token Ring access through the Flexible Network Bus (FNB).

Wide Area Network Connectivity

The ETWMIM allows for W ide Area Network (W AN) connection in one of two ways — the SYNC serial port or the optional T1-SRM module.

The SYNChronous port provides connection to external WAN equipment (e.g., a T1 multiplexer or DDS CSU/DSU). This port supports three interface types: RS-232, V.35, and RS-449/RS-422.

The T1-SRM, an optional internal T1 CSU/DSU interface, provides an RJ48C connector on the front panel for T1 line access . This internal T1 module meets AT&T 62411 standard requirements. See Chapter 5,

Local Management

, for Conﬁguration instructions.

MIB Support

For additional information on how to extract and compile individual MIBs, contact Cabletron Systems Technical Support (see

Help

). The ETWMIM supports the following MIBs:

Getting

IETF (Internet Engineering Task Force) Full Standard MIB:

• MIB II (RFC1213)

IETF Proposed Standard MIBs:

• Bridge MIB (RFC1286)

• RMON MIB (RFC1271)

• IEEE 802.5 Token Ring MIB (RFC1231)

• DS1 Interface MIB (RFC1406)

• RS232 MIB (RFC1317)

• PPP/LCP MIB (RFC1471))

• PPP/Bridge MIB (RFC1474)

• Frame Relay DTE MIB (RFC1315)

Cabletron Private Enterprise MIBs:

• CTRON BRIDGE MIB (ctbridge-mib.txt)

• CTRON CHASSIS MIB (chassis-mib.txt)

• CTRON DEVICE MIB (ctdevice-mib.txt)

• CTRON DOWNLOAD MIB (ctdownload-mib.txt)

• CTRON ETWMIM MIB (etwmim-mib.txt)

• CTRON FNB-TOKEN RING MIB (ctfnbtr-mib.txt)

• CTRON-IMIM-ADDRESS-MIB

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INTRODUCTION

Protocols

The ETWMIM supports the following transmission Protocols:

• Internet Protocol (IP)

• IPX

• AppleTalk

• Point to Point Protocol (LCP and BNCP), as deﬁned by RFC1331

• Frame Relay (RFC1490, ANSI T1.617 Annex D)

1.5 BRIDGING AND THE ETWMIM

The primary function of the ETWMIM is to bridge between different transmission technologies (i.e., Ethernet, T oken Ring, and Wide Area). When the ETWMIM receives frames (trafﬁc) from one of its connections, it places the frames in buffer memory, and determines:

• the type of frames (depending on the receiving port)

• where the frames came from (source address), and if it has seen frames from this address before (learning)

• where the frames are going (destination address), and if it has received frames from this address before (ﬁltering database look-up)

• whether to forward (send on) or ﬁlter any of these frames (database look-up result)

• what port/channel to use if it must forward the frames.

In the process of bridging trafﬁc, the ETWMIM may have to translate frames from one transmission type to another (e.g., Ethernet - Token Ring, Token Ring - Ethernet), or encapsulate the frames for timed/ synchronous transmission (e.g., WAN PPP frame encapsulation).

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INTRODUCTION

1.5.1 Remote Bridging

The ETWMIM uses Point to Point Protocol (PPP) or Frame Relay Protocol to communicate across a Wide Area link. When transmitting with PPP or Frame Relay, the ETWMIM uses High level Data Link Control (HDLC) as a basis for encapsulating MAC frames. When connecting your ETWMIM to a W ide Area Network, keep the following in mind:

• If transmitting to a non-Cabletron device at the other side of the WAN link, make sure that device expects to receive MAC frames encapsulated in PPP or Frame Relay.

• When using a router to connect networks across a WAN link, make sure the router conﬁguration is set to bridge all network trafﬁc using PPP or Frame Relay.

1.5.2 Transparent Bridging

Transparent Bridging, used in Ethernet, Token Ring, and FDDI networks, operates by:

• building a Source Address Table (SAT) from source MAC/ physical addresses

• using the SAT to make forwarding decisions.

The ETWMIM prevents unnecessary network trafﬁc from passing through the module by implementing two separate ﬁltering processes — IEEE 802.1d or Cabletron’s Special Filtering Database. The ETWMIM can use these processes individually or in tandem.

The ﬁrst process, the IEEE 802.1D ﬁltering process, begins with the creation of a list of local node addresses in a table (the SAT). When the ETWMIM ﬁrst goes on-line, it initially forw ards all pac kets across the bridge. After receiving a packet on the bridge port, the ETWMIM learns the address of the sending node from the packet and stores that address in the SAT. In this manner, the bridge learns the address of each node on each side of the bridge. The bridge then uses the addresses stored in the table to compare the destination address of each subsequent packet that travels to the bridge. If the destination address of a packet resides on the bridge segment, the ETWMIM does not forward across the WAN or Token Ring link.

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INTRODUCTION

The second ﬁltering process, the Cabletron Systems Special Filtering Database, provides an additional step in the ﬁlter/forward decision. Through Remote Management, you can deﬁne up to 10 additional ﬁltering parameters for incoming network trafﬁc. These parameters include (but are not limited to) the:

• destination address

• source address

• type ﬁeld (protocol)

• 64 bytes of the data ﬁeld (using a data offset).

For example, using this process, you can ensure that the ETWMIM always ﬁlters or forwards packets with a speciﬁc protocol or address.

1.5.3 Source Route Bridging

Source Route Bridging, currently used in Token Ring and WAN networks, operates by transmitting frames over a designated route. Unlike Transparent Bridging, all devices in a Source Route Bridged (SRB) network “know” the locations of other stations within the network. Using a portion of the MAC frame header, the source bridge determines the route for the frames it sends.

In order for source routing to work, the source station must determine the proper route to reach the desired destination. To accomplish this:

• The source station sends out frames called All Route Explorer

(ARE) frames onto the network. All Source Route Bridges recognize these ARE frames and copy them into their outbound port tables.

• The receiving bridges append their own route information to

the Route Information Field (RIF) in the MAC frame header and transmit the frame again.

• Eventually, the original source device receives all of the ARE

replies from the other Source Route Bridges on the network.

• From this information, the source device can determine a

desired route for each frame it transmits.

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INTRODUCTION

1.5.4 CSMA/CD To Token Ring Translation

When using the ETWMIM, source and destination networks may often differ in MAC types (e.g., Ethernet - Token Ring, Token Ring Ethernet). To bridge trafﬁc between these different MAC types, translation bridging is necessary.

1.6 SPANNING TREE ALGORITHM

The ETWMIM promotes maximum network use in multiple bridge environments. A bridge learns the bridge topology of its network from bridge protocol data that it receives from other bridges within the network. The bridges then apply the Spanning Tree Algorithm (STA) to select a root bridge, and then determine primary data paths within potential data loop conﬁgurations.

Spanning Tree Algorithm is a hierarchy (or tree) of priorities that bridges establish between themselves. This hierarchy guarantees that primary and redundant data paths are clearly deﬁned at all times, so that the network is continuously available to users.

In a multiple bridge environment, one bridge in the network establishes itself as the root bridge. As the root, this bridge has priority over all other bridges. In a Spanning Tree, all of the bridges must determine which bridge is the root, and then determine their own relative priority within the network.

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CHAPTER 2

INSTALLATION

REQUIREMENTS/SPECIFICATIONS

This chapter lists MMAC and Local Management console requirements and concludes with operational speciﬁcations for the ETWMIM. You must meet all conditions, guidelines, speciﬁcations, and requirements in this chapter to achieve optimum performance from this equipment. Failure to follow these guidelines may result in unsatisfactory network performance.

See Appendix A, the optional Ethernet Port Interface Modules.

2.1 MMAC REQUIREMENTS

The ETWMIM should be installed in an MMAC equipped with a Flexible Network Bus (either an MMAC-3FNB, MMAC-5FNB or an MMAC-8FNB).

Note

Cabletron Systems FDDI or Token Ring products. Upgrade kits for MMAC-3s and MMAC-8s (without an FNB) are currently available. Contact Cabletron Systems Technical Support for more information.

Two types of MMACs currently support FNB architecture — shunting and non-shunting. Shunting MMAC-FNBs allow modules to continue communicating on their perspective buses, regardless of whether there is an empty slot between them in the chassis.

: The FNB is a full-height, full-width backplane that links

EPIM Speciﬁcations

, for information concerning

Table 2-1 lists the part numbers of the MMAC chassis that have shunting capabilities.

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REQUIREMENT/SPECIFICATIONS

Table 2-1. MMACs with Shunting Capabilities

MMAC Chassis Part #

MMAC-3FNB FC000000000 or above MMAC- 5FNB CC000000000 or above MMAC-8FNB CG000000000 or above MMAC-M8FNB DK000000000 or above MMAC-M5FNB all MMAC-M3FNB all

2.2 COM 2 PORT AND TERMINAL REQUIREMENTS

The COM 2 port supports a Digital Equipment Corporation VT200™ or VT300™ series terminal (or emulation of one of these terminals). This section lists the specifications for the front panel COM 2 port and the necessary terminal requirements to access ETWMIM Local Management.

An RJ-45 connector provides the interface to a management terminal. The maximum COM 2 cable length is 50 feet. Figure 2-1 illustrates the required pin configuration.

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REQUIREMENT/SPECIFICATIONS

Pin 1

RJ-45 CONSOLE PORT

RECEIVE

TRANSMIT

SIGNAL GROUND

DATA SET READY

DATA TERMINAL READY

CONSOLE PORT

RJ-45

TRANSMIT

RECEIVE

SIGNAL GROUND

DATA SET READY

DATA TERMINAL READY

RJ-45 TO 25 PIN

CABLE

4 1 5

2 6

1 4

5 2 6

FEMALE - 25 Pin

"D" Shell Connector

TRANSMIT

RECEIVE

SIGNAL GROUND 20 DATA TERMINAL READY 5

CLEAR TO SEND

LOCAL MANAGENT

CONSOLE

RECEIVE

TRANSMIT

3 5

SIGNAL GROUND

READY TO SEND

CLEAR TO SEND

You must properly configure your terminal to communicate with Local Management. Table 2-2 lists the setup requirements for the local management console. For more detailed setup information, the keyboard map, or information on setting up a PC emulation, refer to your specific terminal manual. If your terminal is a Digital Equipment Corporation VT series terminal, press

RJ-45 TO 9 PIN

CABLE

Figure 2-1. Console Cable Pinouts

to access the Setup Directory.

FEMALE - DB-9

(9-Pin Connector)

Page 2-3

Page 21

REQUIREMENT/SPECIFICATIONS

Table 2-2. Terminal Setup Requirements

Menu Function Selection

Display Columns 80 Columns Setup: Controls Interpret Controls

Auto Wrap No Auto Wrap Text Cursor Cursor

General Mode 7 Bit Control Setup:

Cursor Keys Normal Cursor

Keys

Communications Setup: Transmit Transmit = 9600

Receive Receive = Transmit X=64 any option Bits, Parity 8 Bits, No Parity Stop Bit 1 Stop Bit Local Echo No Local Echo Port EIA Port, Data Leads

Only

DEC-423, Data

Leads only

Transmit any option Auto Answerback No Auto Answerback

Keyboard Auto Repeat any option Setup: Keyclick any option

Margin Bell Margin Bell Warning Bell Warning Bell Auto Answerback No Auto Answerback

Page 2-4

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REQUIREMENT/SPECIFICATIONS

2.3 OPERATING SPECIFICATIONS

Microprocessor:

Network Interfaces:

Ethernet: Standard IEEE 802.3

Token Ring: Standard IEEE 802.5

WAN: AT&T T7115

Intel RISC 80960 CF @24 MHz

National Semiconductor DP83932 SONIC

SPYDER-T Standard RS530 (DB25) Synchronous Interface supporting:

RS232: 9600 - 19.2Kbps RS422/RS449: 9600-2.048 Mbps V.35: 9600 - 2.048 Mbps

Optional T1-SRM Interface supporting:

FT1: 24 channels @ 56/64 Kbps T1: 1.544 Mbps

Bridging:

Standard IEEE 802.1d Standard IEEE 802.5 (Token Ring)

CPU Memory:

4 MBytes Dynamic RAM (expandable to 12 MBytes)

Buffer Memory:

4 MBytes

2.3.1 Environmental Requirements

Operating Temperature: +5° to +40° C Non-Operating Temperature: -30° to +40° C Operating Humidity: 5 to 95% (non-condensing)

Page 2-5

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REQUIREMENT/SPECIFICATIONS

2.3.2 Safety

This unit meets the following safety requirements: UL 1950, CSA C22.2 No. 950, and EN 60950; the EMI requirements of FCC Class A and EN 55022 Class A; and the EMC requirements of EN 50082-1.

Warning: It is the responsibility of the person who sells the system to which the ETWMIM will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions.

2.3.3 Physical

Dimensions: 11.5 H x 2.0 W x 13.4 D inches

(29.21 cm x 5.08 cm x 34.04 cm)

Weight:

Unit: 2.4 lbs. Shipping: 4.9 lbs.

Page 2-6

Page 24

CHAPTER 3

INST ALLING THE ETWMIM

This section contains instructions for installing the ETWMIM. Verify that all network design guidelines and site requirements listed in Chapter 2, Installation Requirements/Speciﬁcations, are met before installing the ETWMIM.

3.1 UNPACKING THE ETWMIM

Before installing the ETWMIM, visually inspect the unit and check the contents of your shipping box with the list below.

• ETWMIM (1)

• set of release notes (1)

• disposable wrist strap (1)

• ETWMIM User’s Guide

• cable connection kit (1)

Warning: Electrostatic Discharge (ESD) can damage the ETWMIM. Observe all precautions to prevent electrostatic discharges when handling the ETWMIM. These precautions include wearing the disposable wrist strap included in your shipping package, holding only the edges of the board or the metal front panel, and not touching the components or surface of the board.

To unpack the unit:

1) Carefully remove the ETWMIM from the shipping box.

2.) Remove the ETWMIM from the protective plastic bag.

Note: If you must set the ETWMIM down for any reason, place it back inside the protective bag. This will help prevent ESD damage.

Contact Cabletron Systems Technical Support immediately if you encounter any problems unpacking or installing the ETWMIM.

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INSTALLING THE ETWMIM

3.2 SETTING THE CONFIGURATION SWITCHES

The ETWMIM has two conﬁguration switches — a switch bank, and an Ethernet connection slide switch. You must set these switches before installing the ETWMIM. Figure 3-1 illustrates the location of these items on the ETWMIM board.

Rear Panel BackplaneConnection

Ethernet Connection Switch (SW 4)

Front Panel EPIM Connection

ETWMIM Front Panel

Switch Bank (SW 2)

Figure 3-1. Location of Switches

ON OFF

1 2 3 4 5 6 7 8 Refer to Table 3-1

For Settings.

Page 3-2

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INSTALLING THE ETWMIM

3.2.1 Setting the Switch Bank (SW2)

Switch Bank SW2 controls various functions in the ETWMIM. Table 3-1 lists these functions and possible switch settings.

Table 3-1. ETWMIM Switch Bank Settings

Switch Function

Settings

(* indicates factory default)

1 Clear NVRAM N/A (Toggle Switch) 2 bootp download N/A (Toggle Switch) 3 Ctron Use Only N/A 4 Token Ring

Speed

5 SYNC Port

Clear to Send

6 SYNC Port

Data Set Ready

7 T1 Clock

ON: 16 Mbits* OFF: 4 Mbits

ON: CTS toggles with signal* OFF: CTS forced on

ON: DSR toggle with signal* OFF: DSR forced on

ON: Line Clock*

Source Select

OFF: Internal Generated Clock

Note: Check with the Service Provider for Proper Setting

8 T1 Line Format ON: D4 Format

OFF: ESF Format*

Note: When using a toggle switch, move the switch to the opposite position and power-up the board. For example, if the switch is in the ‘ON’ position, switch it to the ‘OFF’ position and leave it there. This change in position activates the switch function.

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INSTALLING THE ETWMIM

3.2.2 Ethernet Connection Switch (SW4)

Ethernet can connect to the ETWMIM in one of two ways — through a front panel EPIM connection or through the backplane. If you want a front panel EPIM connection, slide switch SW4 tow ard the front of the unit. If you want Ethernet connection through the backplane, slide switch SW4 toward the rear of the module.

Note: When set for the front panel, this switch turns the front panel EPIM LED ON, regardless of whether an EPIM is installed or not.

3.3 INSTALLING THE ETWMIM

Depending on what you want to do with the ETWMIM, you must follow a few hub conﬁguration rules. When installing the ETWMIM into your hub, keep the following in mind:

• If the ETWMIM is going to use the backplane A-channel (Ethernet Channel) in your MMAC hub, the hub MUST have an Ethernet management device (e.g., IRM, IRM-2, etc.) in the far right slot.

• If the ETWMIM is going to use the front panel EPIM for Ethernet connectivity, you DO NOT need an Ethernet management device in your hub.

• If the ETWMIM is going to bridge Token Ring trafﬁc, and you are using a non-shunting MMAC, all Token Ring modules MUST reside in slots adjacent to the ETWMIM.

After unpacking your ETWMIM, setting any conﬁguration switches, and deciding where to insert the board in the hub proceed as follows:

Note: We recommend powering-down your MMAC before installing or removing ETWMIMs, even though they have “hot swap” capabilities.

1. Turn off the power to the MMAC. Remember that MMACs with multiple power supplies have an ON/OFF switch for each supply.

2. Remove the selected blank panel from the MMAC.

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INSTALLING THE ETWMIM

MMAC-8FNB

3. Holding the ETWMIM by the front panel or by the edges of the

circuit board, align the bottom and top edges of the card with the slot guides in the MMAC chassis. Be sure that both the bottom and top edges of the card rest in the guide slots. (See Figure 3-2).

4. Slide the ETWMIM into the MMAC until you feel it meet the

backplane. At this point, the front panel should be about 1/2 inch from being flush with the rest of the modules in the MMAC.

5. Press gently to seat the module into the backplane. Do not try to

force the module into place or use the knurled knobs to draw the module into the backplane. Forcing a misaligned module into place can damage the ETWMIM or the MMAC backplane.

6. Turn on the MMAC chassis.

KNURLED KNOBS

IRM3TRMIM-22A

ETWMIM

BOARD SLOT

TOKEN RING

Figure 3-2. Installing the ETWMIM

3.4 INSTALLING AN EPIM

The ETWMIM allows for an optional Ethernet Port Interface Module (EPIM). To install an EPIM refer to ﬁgure 3-3 and proceed as follows:

1. Remove the EPIM cover plate on the ETWMIM by untwisting the

coverplate screw.

2. Remove the EPIM from its protective package.

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INSTALLING THE ETWMIM

3. Slide the EPIM into place, making sure the connectors on the rear of the module and inside the ETWMIM attach properly.

4. Tighten the EPIM mounting screw.

Mounting Screw

Figure 3-3. EPIM Replacement

Note: See Appendix A for EPIM specifications and cabling information.

3.5 INSTALLING THE T1-SRM

The ETWMIM allows for an optional T1-SRM. To install this optional T1 interface you need the following tools:

• disposable static wrist strap (provided with your ETWMIM)

• 5/16” nut driver, or equivalent.

After obtaining the necessary equipment, refer to Figure 3-4 and proceed as follows:

1. Using the nut driver, remove the T1 cover plate lock-nuts from the inside of the ETWMIM faceplate.

2. Remove the T1 cover plate and save it in the event you want to remove the T1-SRM at a later date.

3. Remove the T1-SRM from its protective package.

4. Attach the T1-SRM such that the holes on the ends of the device slide over the bolts on the back of the ETWMIM faceplate. (See Figure 3-4.)

Page 3-6

Page 30

INSTALLING THE ETWMIM

EPIM

RWRP

CLN

NSRT

E T

5. Insert the connector pins of the T1-SRM into the connector on the

ETWMIM mother board.

Caution: Make sure pins set properly in connector holes. Improper connection can damage both the T1-SRM and the ETWMIM.

6. Press down on the back of the T1-SRM until the pins slide all the

way into the connector holes to ensure proper contact.

Note: Failure to make proper pin contact may result in poor network performance, board malfunctions, or Local Management Configuration Screen omissions.

7. Replace the lock-nuts and tighten them down with the nut-driver.

Lock-nut

Connector

Pins

Connector

TST

YEL

ALM

LOS

RED

-15

-7.5

TOKEN RING WAN ETHERNET

ALM

SYNC

TST

CTS

DSR

STBY

LNK

RTS

DTR

ETWMIM

Figure 3-4. Installing the T1-SRM

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INSTALLING THE ETWMIM

3.6 CONFIGURING THE LBO SWITCH

The T1-SRM provides a Line Build Out (LBO) switch. The LBO switch on the front of the T1-SRM is used to match the loss of the end-section of the service provider’s (i.e. AT&T, Sprint, MCI, NYNEX, etc.) circuit. The default setting from the factory is 0db, and in most installations it should be left in this position. At the time of service installation, the service provider may ask that the output of the T1-SRM be attenuated because it is over-driving the T1 circuit. The service provider will advise you if the setting should be -7.5db or -15db. Changing the LBO from 0db to -7.5db or -15db decreases the output of the T1-SRM.

Warning: After the time of service installation, the LBO switch should NEVER be adjusted. If you are experiencing a loss of signal or other difficulties, it indicates a problem with the line or equipment. The LBO switch should not be used to compensate for degradation of a circuit!

Table 3-2. LBO Switch Settings

Settings (dB) Attenuation

0 0 (no attenuation)

-7.5 ~2.3 times

-15 ~5.6 times

Page 3-8

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INSTALLING THE ETWMIM

3.7 CONNECTING TO LOCAL MANAGEMENT

Access Local Management by attaching a management console to the RJ-45 COM 2 port of the ETWMIM (see Figure 3-5). The console connection supports a Digital Equipment Corporation VT200 or 300 series terminal or PC emulation of one of these terminals.

C O M

O M

TOKEN RING

WAN

ETHERNET

Figure 3-5. COM Connections

Connect the console to the ETWMIM as follows:

1. Attach the male RJ-45 connector to the ETWMIM COM 2 port.

2. Attach the female end (25-pin or 9-pin, as applicable) to the COMM port on the terminal.

3.8 FINISHING THE INSTALLATION

The ETWMIM is now ready for operation. Before placing the network into service, test the installation thoroughly, making sure that all stations are able to be addressed and that the ETWMIM and all stations are indicating normal operation.

Page 3-9

Page 33

CHAPTER 4

USING LANVIEW

The ETWMIM uses Cabletron’s built-in visual diagnostic and status monitoring system called LANVIEW. With LANVIEW, network troubleshooting personnel can quickly scan LEDs to observe network status, or diagnose network problems. Figure 4-1 displays the LANVIEW LEDs on the ETWMIM.

ETWMIM

Ethernet Status LEDs

RESET

BOK ERR

STBY

RCV XMT

CLN

EPIM

STBY 16MB LWRP

NSRT RWRP

System Status LEDs

Token Ring Status LEDs

T1 Port Status LEDs

STBY

LNK RTS

DTR

TST YEL

ALM

LOS RED

ALM

SYNC

TST CTS

DSR

T 1

S Y

N C

-15

-7.5

B O

0 db

Figure 4-1. LANVIEW LEDs

Sync. Port Status LEDs

Page 4-1

Page 34

USING LANVIEW

4.1 SYSTEM STATUS LEDs

BOK (Board OK)

• Flashing (three times/second) - Indicates that the module is running a self-test. This LED ﬂashes three times/second during the self-test, and then adjusts to the normal one time/second rate.

• Flashing (one time/second) - Indicates that the module has successfully completed its self-test and is ready for normal operation.

ERR (Error)

• On - Indicates the detection of a hardware failure. This LED should not be on during normal operations. If the problem persists, contact Cabletron Systems Technical Support.

• Off - Indicates normal operating conditions.

4.2 ETHERNET STATUS LEDs

STBY (Standby)

Standby is an inactive state where the module is not passing data on the station connection. Standby is set/reset via Local Management or in-band network management.

• On - Indicates that the module is in Standby mode.

• Off - Indicates normal operation. The module is operational and passing data on the Station port.

Page 4-2

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USING LANVIEW

RCV (Receive)

• Flashing - Indicate the ETWMIM is receiving a data packet

through the Ethernet port. The ﬂash is pulse-stretched for viewing effect.

• Off - Indicates the ETWMIM is not receiving data packets.

XMT (Transmit)

• Flashing - Indicates a data packet is being transmitted

through the Ethernet port. The ﬂash is pulse stretched for viewing effect.

• Off - Indicates the ETWMIM is not transmitting data packets.

CLN (Collision)

• Flashing - Indicates a detected collision. The ﬂash is

pulse-stretched for viewing effect.

• Off - No collisions detected.

EPIM (Ethernet Port Interface Module)

• On - Indicates the Ethernet Connection Switch (SW4) is set to

the forward (EPIM) position.

• Off - Indicates the SW4 switch is set to the rear (backplane)

position.

Page 4-3

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USING LANVIEW

4.3 TOKEN RING STATUS LEDs

STBY (Standby)

Standby is an inactive state where the module is not passing data on the ring. Standby is set/reset via in-band network management.

• On - Indicates that the module is in Standby mode.

• Off - Indicates normal operation. The module is operational and passing data on the Station port.

16 Mbps (Ring Speed)

• On - Indicates that the module ring speed is set to 16 Mbps.

• Off - Indicates that the module ring speed is set to 4 Mbps.

LWRP (FNB Left Wrap) The LWRP LED indicates the state of the FNB left (trunk) connection.

• On - Indicates that the left FNB ring connection has been set to the wrap state by network management.

• Off - Indicates normal operation. The FNB left connection is in a non-wrap state. When this LED is on, it indicates that the left FNB ring connection has been set to the wrap state by network management.

NSRT (Insert)

• On - Indicates that the module is inserted onto the ring via its FNB Trunk connection. This is the normal operating condition.

• Off - Indicates that the module has been removed from the ring.

Page 4-4

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USING LANVIEW

RWRP (FNB Right Wrap)

• On - Indicates that the FNB right (trunk) connection has been

set to the wrap state by network management.

• Off - Indicates that the FNB right (trunk) connection is in a

non-wrap state. This is the normal operating condition.

4.4 T1-SRM PORT STATUS LEDs

TST (Test)

• On - Indicates that the T1-SRM is in test mode. This LED ma y

indicate internal or external loop testing. For example, the LED lights when the service provider loops up the ETWMIM or the ETWMIM loops back (as with power up diagnostics).

• Off - Indicates normal operation.

LOS (Loss of Signal)

• On - Indicates that the T1-SRM is not receiving any pulses

from the T1 circuit.

• Off - Indicates normal operation.

YEL ALM (Yellow Alarm)

• On - Indicates that the remote T1-SRM is in red alarm. Check

the remote T1-SRM, port cable, the Line Build Out (LBO) setting, the Timing Mode setting, or the ESF/D4 setting.

• Off - Indicates normal operation.

RED ALM (Red Alarm)

• On - Indicates a service provider system failure on the

incoming line.

• Off - Indicates normal operation.

Page 4-5

Page 38

USING LANVIEW

4.5 SYNCHRONOUS PORT STATUS LEDs

SYNC (Synchronous):

• On - Indicates that the SYNC port is active.

• Off - Indicates that the T1/SRM port is active.

STBY (Standby):

• On - All WAN bridge ports are in the non-forwarding state. Possible causes of this condition are: redundancy detected by Spanning Tree , data link la yer down, physical la yer down, port disabled, problem in telephone circuit, or improper conﬁguration.

• Blinking - Some WAN bridge ports are in the forw arding state and some WAN bridge ports are in the non-forwarding state.

• Off - All WAN bridge ports are in the forwarding state.

TST (Test)

• On - Indicates that the SYNC port is in test mode.

• Off - Indicates that the SYNC port is in non-test mode.

LNK (Link)

• On - Indicates a clock is being received from the DCE.

• Off - Indicates no clock from the DCE.

CTS (Clear to Send)

• On - Indicates that the DCE is ready to receive data from the SYNC Port, or that the Force CTS True ﬁeld (refer to the WAN Physical Conﬁguration screen) is set to YES (On).

• Off - A valid CTS is not being received from the DCE. Check the cabling or check if the DCE is powered on.

Page 4-6

Page 39

USING LANVIEW

RTS (Request to Send)

• On - Indicates the ETWMIM is ready to send data to the DCE.

• Off - Indicates the ETWMIM is not ready to send data to the

DCE.

DSR (Data Set Ready)

• On - Indicates that the DCE is ready to operate, or that the

F orce DSR True ﬁeld (refer to the W AN Physical Conﬁguration screen) is set to YES (on).

• Off - A valid DSR is not being received from the DCE. Check

the cabling or check if the DCE is powered up.

DTR (Data Terminal Ready)

• On - ETWMIM is operational and ready to generate or receive

control signals (such as RTS or CTS).

• Off - ETWMIM is not operational.

Page 4-7

Page 40

CHAPTER 5

LOCAL MANAGEMENT

Cabletron Systems ETWMIM Local Management provides unique management and control capabilities for Cabletron Systems ETWMIM. Local Management supplies the tools to manage the ETWMIM and all of its attached segments. You can:

• assign an IP address and subnet mask

• select a default gateway

• set interface parameters for the COM 2 port

• control access to the ETWMIM through the community names

established in the Community Names Table

• designate which Network Management Workstations receive

traps from the device

• conﬁgure the optional T1-SRM WAN interface

• navigate through the Management Information Base (MIB),

and manage the objects within it from a remote location. Given the appropriate security level, you can access the MIB from the ETWMIM through SNMP Tools.

5.1 TERMINAL CONFIGURATION

The Local Management terminal must be a VT220, VT320 or equivalent. You must conﬁgure the terminal as described in Chapter 2 in order to communicate with Local Management. For instructions on setting up your terminal, refer to your terminal manual.

Page 5-1

Page 41

LOCAL MANAGEMENT

5.2 ACCESSING LOCAL MANAGEMENT

After ensuring proper terminal conﬁguration, and correct physical cable connections, you can access ETWMIM Local Management.

To access Local Management:

1. Turn the terminal on. The ETWMIM Password screen, Figure 5-1, appears.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 00.00.00

CABLETRON Systems, Incorporated

35 Industrial Way, P.O. Box 5005 Rochester, NH 03867-5005 USA

(603) 332-9400

ETWMIM F/W Version: 00.00.00

Boot EPROM Version: 00.00.00

ETWMIM Board Rev#: 0

Enter USER PASSWORD:

Figure 5-1. ETWMIM Password Screen

2. Enter your Password. The factory default password for super-user access is a carriage return <CR>.

Note: Your password is one of the community names specified in the Community Name Table. Access to certain Local Management capabilities depends on the degree of access accorded to that community name. See Section 5.3.

Page 5-2

Page 42

LOCAL MANAGEMENT

3. Press Return.

• If your password entry is invalid, the terminal beeps and the cursor returns to the beginning of the password entry ﬁeld.

• If your password is valid, the associated privilege appears brieﬂy on the screen, and then the ETWMIM Local Management Feature Selection screen, Figure 5-2, appears.

ETWMI M LOCAL MA NAGE MENT

Cablet ron ET WMI M Revision 00.00.00

FEATURE SELECT ION

F6 COMMUNITY NAME TABLE F7 IP ADDR ESS ASSIGNMENT F8 C OMP ON ENT TR A P TABLE F9 SNMP TOOL SUPPORT F1 0 COM MAND L INE I NT ERFACE

WAN CONFIGURATION

E XIT LIM SERVICE

Figure 5-2. Feature Selection Screen

4. Use the arrow keys to highlight a screen option, and press Return (or simply press the corresponding Function key). The desired screen appears.

5.3 COMMUNITY NAME TABLE

The Community Name Table Option lets you set community names. Community names serve two purposes — they act as passwords to Local Management, and as agents of security control to your ETWMIM. You control ETWMIM access by establishing up to four different levels of security authorization (BASIC-READ , READ-ONLY, READ-WRITE, and SUPER-USER).

If you have super-user access, you can change the existing passwords by entering new community names. Only super-user community names accord full management privileges.

Page 5-3

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LOCAL MANAGEMENT

5.3.1 Accessing the Community Name Table Screen

To access the Community Name Table screen from the Feature Selection screen:

• Use the arrow keys to highlight the Community Name Table option and press the Return key, or press F6. The Community Name Table screen, Figure 5-3, appears.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 00.00.00

COMMUNITY NAME TABLE

<< PASSWORD AUTHORIZATION = SUPER-USER >>

NOTE: S/U names are LOCAL passwords

Community Name

public public public public

SAVE IP TABLE TRAP TABLE SNMP TOOLS CLI RETURN

Access

BASIC-READ READ-ONLY READ-WRITE SUPER-USER

F10

Figure 5-3. Community Name Table Screen

5.3.2 Community Name Table Screen Fields

The following brieﬂy explains each ﬁeld on the Community Name Table screen.

Community Name

Displays the user-deﬁned name through whic h a user can access Local Management for the ETWMIM. Any community name assigned here acts as a password to Local Management.

Page 5-4

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LOCAL MANAGEMENT

Access

Indicates the access status accorded each community name. Possible status conditions are:

BASIC-READ This status provides limited read-only access to

the ETWMIM. This does not include access to security protected fields of upper levels (read-only, read-write, or super-user).

READ-ONLY This status allows for extended read-only

access to ETWMIM/Local Management fields, but excludes access to security protected fields of upper levels (read-write or super-user).

READ-WRITE This status provides read and write access to

ETWMIM/Local Management fields, excluding fields that are security protected fields for super-user.

SUPER-USER This status provides read-write access to the

ETWMIM and allows changes to all modifiable parameters including: community names, IP addresses, traps, and SNMP objects.

5.3.3 Editing the Community Name Table Screen

The password that you use to access Local Management at the Password screen must have Super-User access for Community Name Table edits to take effect. A password of either BASIC-READ, READ-ONLY, or READ-WRITE access displays the message “AUTHORIZATION PROHIBITS ACCESS”, and does not include editing capabilities.

Caution: Any community name assigned in the Community Name Table is a password to its corresponding level of access to Local Management. The community name assigned super-user access is the only one that provides complete access to Local Management.

Page 5-5

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LOCAL MANAGEMENT

To make changes to the Community Name Table Screen:

1. Using the arrow keys, highlight the Community Name field adjacent to the desired access level.

2. Enter the password, up to 32 characters in length, into the field.

3. Press the Return key.

4. Repeat steps 1 - 3 for editing any of the other community names.

5. Using the arrow keys, highlight SAVE at the bottom of the screen and press the Return key (or press F6). The message “SAVED OK”, appears. The ETWMIM saves the community names to memory and implements their modes of access.

Please note that the first time you try to exit the screen without saving your changes, Local Management displays a “NOT SAVED?” message above the SAVE command. If you proceed to exit without saving, you lose all edits.

6. Exit the screen by either pressing the appropriate Function key or by using the arrow keys to highlight RETURN and pressing the

Return key. The latter exits you to the Feature Selection screen.

5.4 CONFIGURING THE ETWMIM

The ETWMIM Conﬁguration screen allows you to assign IP Addresses and Subnet Masks. The Conﬁguration screen also allows you to set the Default Gateway.

Page 5-6

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LOCAL MANAGEMENT

5.4.1 Accessing the Conﬁguration Screen

T o access the Conﬁguration screen from the Features Selection screen:

• Use the arrow keys to highlight the IP Address Assignment option and press the Return key, or press F7. The Conﬁguration screen, Figure 5-4, appears.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 00.00.00

CONFIGURATION

I/F ENET TR

SAVE IP COMMUNITY NAMES TRAP TABLE SNMP TOOLS CLI

IP Address

0.0.0.0

Default Gateway: 0.0.0.0

COM-1 Application: OFFLINE COM-2 Application: CONSOLE Baud Rate: 9600 --ACTIVE--

F7 F9 F10

SubNET Mask

0.0.0.0

MAC Address 00-00-1d-06-f8-d8 00-00-b8-60-1f-9b

Figure 5-4. Configuration Screen

5.4.2 Conﬁguration Screen Fields

The following brieﬂy explains each ﬁeld on the Conﬁguration screen.

I/F

Gives the number of the interface corresponding to the channel over which packets with that IP address are passing. There is an ENET (Ethernet) and a TR (Token Ring) channel.

IP Address

Displays the IP Address of the Ethernet and Token ring ports.

SubNET Mask

Displays the SubNET Mask for the ETWMIM. A subnet mask is a 32-bit quantity which “masks out” the network bits of the IP address. This is done by setting the bits in the mask to 1 when the network treats the corresponding bits in the IP address as part of the network or subnetwork address, or 0 if the bit identiﬁes the host.

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LOCAL MANAGEMENT

MAC Address

Displays the physical address associated with the interface.

Default Gateway

Displays the default gateway for the ETWMIM. This ﬁeld displays

0.0.0.0 until you enter an appropriate value. The Default Gateway identiﬁes the Default Gateway Device that will forward packets to other IP subnetworks.

COM 1 Application

Displays the port’s application setting as OFFLINE.

COM 2 Application

Displays the port’s application setting as CONSOLE.

Baud Rate

Displays the Baud Rate setting of the device attached to the ETWMIM through that serial port. The setting for COM 2 is 9600. A ﬂashing

-ACTIVE- appears after the 9600

5.4.3 Setting the IP Address Table and Subnet Mask Field

To set the IP Address Table and subnet mask ﬁelds:

1. Using the arrow keys, highlight one of the IP Address fields.

2. Enter the IP address into this field. The format for this entry is XXX.XXX.XXX.XXX, with values for XXX being from 0 to 254. Local Management does not accept non-numerics or adjacent dots. If the entry does not have three dots, Local Management rejects it and re-displays the old value.

3. Press the Return key. The screen displays the IP address and also generates and displays the natural subnet mask.

4. Should you need to modify the subnet mask, use the arrow keys to highlight the Subnet Mask field.

5. Enter the Subnet Mask into this field. The format for this entry is XXX.XXX.XXX.XXX with values for XXX being from 0 to 255.

6. Press the Return key.

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7. Using the arrow keys, highlight the SAVE IP option and press the

Return key, (or press F6). The message “SAVED OK” appears and

Local Management saves the changes to memory.

Note: The first time you try to exit the screen without saving your changes, Local Management displays a “NOT SAVED?” message. If you proceed to exit without saving, you lose all edits.

5.5 SETTING THE TRAP TABLE

As an SNMP compliant device, the ETWMIM can authenticate an SNMP request. The Trap Table deﬁnes the management stations that will receive SNMP Traps for alarm/event notiﬁcation.

5.5.1 ETWMIM Trap Table Screen

To access the Trap Table screen from the Features Selection screen:

1. Use the arrow keys to highlight the Component Trap Table

option and press the Return key, or press F8. The Trap Table screen, Figure 5-5, appears.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 00.00.00

SNMP Community Name

TRAP TABLE

Traps

Trap IP Address

N N N N N N N N

0.0.0.0

SAVE COMMUNITY NAMES IP TABLE SNMP TOOLS CLI RETURN

F6 F7 F8 F9 F10

Figure 5-5. Trap Table Screen

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5.5.2 Trap Table Screen Fields

SNMP Community Name

Displays the Community Name to be included in the trap message, which is sent to the Network Management Station with the associated IP address.

Traps

Enables transmission of the traps to the network management station with the associated IP Address. Select Y to enable or N to disable.

Trap IP Address

Indicates the IP Address of the workstation to receive traps from the ETWMIM.

5.5.3 Conﬁguring the Trap Table

1. Using the arrow keys, highlight the SNMP Community Name field and enter the name of that field.

2. Press the Return key.

3. Using the arrow keys, highlight the Traps field and enter Y (or y) to send alarms from the ETWMIM to the workstation, and N (or n) to prevent alarms from being sent.

4. Press the Return key.

5. Use the arrow keys to highlight the appropriate Trap IP Address field.

6. Enter the IP Address of the workstation to send traps using this field. The format for this entry is XXX.XXX.XXX.XXX, with the value of XXX ranging from 0 to 254, and three dots, or else it returns to the beginning of the field.

7. Using the arrow keys, highlight the SAVE option and press Return (or press F6). The message “SAVED OK” appears.

Note: The first time you try to exit the screen without saving your changes, Local Management displays a “NOT SAVED?” message. If you proceed to exit without saving, you lose all edits.

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8. Exit the screen by either pressing the appropriate Function key

or by using the arrow keys to highlight RETURN and pressing the Return key. The latter will exit you to the Feature Selection screen.

Alarms for these traps will now be sent to the designated IP addresses from the ETWMIM.

5.6 SNMP TOOLS

This section describes speciﬁc commands and features within the SNMP Tools screen. This screen allows you to access Management Information Bases (MIBs), and varies according to your level of security access.

The following descriptions outline the super-user management capabilities. From SNMP Tools you can:

• review speciﬁcs about object identiﬁers (OIDs)

• edit conﬁgurable OIDs

• view OIDs sequentially from the originally requested OID.

5.6.1 Accessing The SNMP T ools Screen

To access the SNMP Tools screen:

1. From the Features Selection screen, use the arrow keys to

highlight the SNMP Tools Support option.

2. Press the Return key. The SNMP Tools screen, Figure 5-6,

appears.

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GET SET GETNEXT WALK RECALL-OID STEP CYCLES REPEAT F6 F7 F8 F9

Figure 5-6. SNMP Tools Screen

ETWMIM LOCAL MANAGEMENT

Cabletron ESXMIM Revision 0.00.00

SNMP TOOLS

COMMUNITY NAME: public

OID PREPEND: 1.3.6.1

RETURN F10

5.6.2 SNMP Tools Screen Fields

The following describes the SNMP Tool screen ﬁelds and commands.

COMMUNITY NAME

Identiﬁes the community name MIB access level password.

OID PREPEND

Speciﬁes the number preﬁx common to all object identiﬁers (OIDs) found in a MIB. The preﬁx ‘1.3.6.1’ is the default. You can modify this ﬁeld to suit your needs.

GET

Allows you to retrieve MIB objects, one at a time, using SNMP protocol.

SET

Lets you edit modiﬁable MIB objects, using SNMP protocol.

GETNEXT

Displays the next OID in the MIB tree by getting the next SNMP OID from a remote agent.

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WALK

Scrolls you through the MIB, leaf by leaf, from a user-speciﬁed object identiﬁer. Leaves are objects, or instances of objects. After initializing a walk you see the following categories for each entry:

• Speciﬁed OID — identiﬁes the number tag for that OID.

• Size — gives the number of bytes required to store the object.

• Data Type — gives the object’s variable type (e.g ., int=integer).

• Data Value — displays what the object identiﬁer represents.

RECALL-OID

Recalls from memory the last OID used since powering up the board or re-entering the SNMP Tools screen.

STEP

Displays the MIB, step by step, with speciﬁc OID details.

CYCLES

Allows you to specify the number of GETNEXT requests to walk through and how much time elapses between each request.

REPEAT

Repeats the Get command, allowing you to monitor any changes to a speciﬁc OID.

5.6.3 The Security Access Level

Each MIB component that the ETWMIM supports (e.g., RMON, DLM, etc.) has its own “password” for each possible level of access (ranging from Basic Read-Only to Super-User). Most MIB component Community Names default to “public.”

Note: A complete list of Super-User Community Names (also called Community Strings) resides in the Cabletron proprietary chassis MIB. The MIB group chCompName provides the names of the MIB components. The MIB group chCompSUCommStr provides individual MIB component Community Names/Strings.

The component information corresponds numerically – by last digit. In other words, each instance (i.e., OID element) in the chCompName group indicates its match in the chCompSUCommStr group.

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In order to access a speciﬁc MIB’s components, you must set the appropriate MIB password in the COMMUNITY NAME ﬁeld.

Note: The default Super-User password (public) allows you to access most MIB components. To change the SNMP Tools screen COMMUNITY NAME field, you must have Super-User access to Local Management.

To set the SNMP Tools screen COMMUNITY NAME:

1. Use the arrow keys to highlight the field to the right of COMMUNITY NAME.

2. Enter the Community Name necessary for Super-User access for any specific MIB (e.g., channel A DownloadMIB).

3. Press the Return key. The Community Name changes.

5.6.4 Getting And Setting OIDs

To get an OID:

1. Use the arrow keys to highlight GET, or press the F6 function key.

2. Press the Return key. “<GET> OID (=|F9):” appears.

3. Enter an OID either by:

• using the keyboard to enter the OID. Shortcut: Save yourself some keystrokes by typing the OID minus

the OID’s prepend (i.e., given an OID prepend of 1.3.6.1, you enter

2.1.1.4.0, and the Local Management gets the MIB II sysContact OID 1.3.6.1.2.1.1.4.0).

• pressing F9 to recall an OID already entered, and using the

keyboard to modify the recalled OID as necessary.

• entering an ‘=’ and the OID sufﬁx (e.g., if you enter =2.1.1.4.0,

the OID = 1.3.6.1.2.1.1.4.0). This allows you to digress and not use the prepend.

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4. Press the Return key. If there is no instance of that OID, the

ETWMIM displays “MIB_NO_INSTANCE.” Otherwise, the ETWMIM displays that OID’s data type, length, and value.

To get the next OID:

1. Highlight GETNEXT, using the arrow keys.

2. Press the Return key. “<GETNEXT> OID (=|F9):” appears.

3. Enter the OID.

4. Press the Return key. If that OID does not exist, the ETWMIM

displays “MIB_NO_INSTANCE”. Otherwise the ETWMIM displays that OID’s data type, length, and value.

Shortcut: If you have previously entered an OID, press F9 to recall that entry. You can use the arrow keys to modify the recalled OID, or if you have not previously entered the OID, type the OID minus the OID’s prepend.

To set an OID (parentheses provide an example for you to follow):

1. Highlight SET, using the arrow keys.

2. Press the Return key. “<SET> OID (=|F9):” appears.

3. Enter an OID. (1.3.6.1.2.1.1.4.0)

4. Press the Return key. If that OID does not exist, the ETWMIM

displays “MIB_NO_INSTANCE”. Otherwise the ETWMIM displays:

{INteger String Null OId IPaddress Counter Gauge Timeticks OPaque}

“DATA TYPE (name):”. Shortcut: If you have previously entered an OID, press F9 to

recall that entry. You can use the arrow keys to modify the recalled OID, or if you have not previously entered the OID, save yourself some keystrokes by typing the OID minus the OID’s prepend.

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5. Enter the OID’s Data Type. (the sysContact Data Type is String.)

Note: When setting a String, SNMP tools requests the kind of data you plan to enter — HEX or ASCII. (In this example choose ASCII.)

6. Press the Return key. The ETWMIM displays “SNMP OID DATA.”

7. Enter the Data, or value of the OID. (Type in a sysContact. This OID allows for a String of up to 12 characters.)

8. Press the Return key. If the ETWMIM accepts the entry, it displays “<SET> OPERATION CODE: XXXX <OK>”; otherwise, an error message appears.

5.6.5 Scrolling Through MIB OIDs

Viewing several object identiﬁers at one time allows you to quickly scan a MIB for the information that you need. The SNMP Tools screen provides several scroll options:

• WALK — scrolls through OIDs sequentially, from the initial

OID.

• CYCLE — allows you to specify how many GETNEXT

commands to cycle through for one OID.

• STEP — pages through the MIB, one OID at a time.

To walk through the MIB:

1. Highlight WALK, using the arrow keys.

2. Press the Return key. “<INITIAL> OID (=|F9):” appears.

3. Enter the OID.

4. Press the Return key. Local Management begins walking through the sublayers of the MIB available from the specified OID. Each OID in the list displays the specified OID, its size, its data type, and the data value.

5. Press any key to stop the walk, or wait for “***MIB WALK COMPLETED***” to appear on the screen.

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To cycle through:

1. Highlight CYCLES, using the arrow keys.

2. Press the Return key.

3. Enter the number of OID cycles that you want to scroll through

after “ENTER <GETNEXT> CYCLE COUNT:”.

4. Press the Return key.

5. Enter how many seconds delay that you want between GETNEXT

requests after “ENTER CYCLE DELAY (secs):”.

6. Press the Return key.

7. “<GETNEXT> OID (=|F9):” appears.

8. Enter the OID.

9. Press the Return key. To step through:

1. Highlight GETNEXT, using the arrow keys.

2. Enter the OID (only the suffix is necessary).

3. Press Return. The initial OID details, including its size, data type,

and data value, appear.

4. Highlight STEP, using the arrow keys. Press the Return key to page through the MIB to the next OID.

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5.7 CONFIGURING WAN PHYSICAL ATTRIBUTES

The WAN Physical Conﬁguration screen allows you to deﬁne the physical attributes of your WAN interface.

5.7.1 Accessing the WAN Conﬁguration Screen

To access the WAN Physical Conﬁguration screen from the Features Selection screen use the arrow keys to highlight the WAN CONFIGURA TION option and press the Return key. The W AN Physical Conﬁguration screen, Figure 5-7, appears.

Note: T1 information fields appear on the WAN Physical Configuration screen only after you install the optional T1-SRM module.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 00.00.00

WAN PHYSICAL CONFIGURATION

Active WAN Port: T1 Default WAN Port: T1

SYNC Port Type: V.35 Force CTS True: Yes Force DSR True: No

SAVE

WAN INT CONFIG

01-08

09-16

17-24

T1 Timeslot View: Active T1 Line Coding: B8ZS T1 Frame Type: ESF T1 Xmit Clk Src: LOCAL TIMING

T1 Timeslot Configuration

00 00 00 00 00 00 00 00

RETURN

Figure 5-7. WAN Physical Configuration Screen

5.7.2 WAN Physical Conﬁguration Screen Fields

Active WAN Port

Displays the active WAN port. In future ETWMIM releases, this ﬁeld will provide port redundancy information.

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Default WAN Port

Displays the default WAN port used for the WAN connection. The selections toggle between SYNC and T1.

SYNC Port Type

Displays the Sync Port electrical interface type. The selections toggle between V.35, RS422, RS232, and NONE. This ﬁeld always displays a Sync Port Type, even if the Sync Port is not the active WAN port. To use X.21 or RS530, select RS422 and use the proper Interface Cable part numbers. The default setting for this ﬁeld is V.35. Table 5-1 lists the available Interface Cable part numbers.

Table 5-1. Cabletron Interface Cables

Interface Type Cabletron Part Number

V.35 (CCITT V.35) 9372080 RS422 (EIA 449) 9372078 RS232 (EIA 232) 9372079 X.21 (CCITT X.21) Call Cabletron Systems for

part number.

RS530 (EIA 530) 9372079

Force CTS True

Displays the source of the Clear To Send (CTS) signal. The CTS signal is an input to the ETWMIM. The ETWMIM can either use or ignore the CTS signal. You can toggle the selections between YES and NO. The YES (On) setting indicates that the ETWMIM ignores the CTS signal from an external DCE (Data Communications Equipment). The NO (Off) setting indicates that the CTS signal is received from an external DCE. The default setting is NO.

Force DSR True

Displays the source of the Data Set Ready (DSR) signal. You can toggle the selections between YES and NO. The YES (On) setting indicates that the DSR is internally “Forced True” (from the ETWMIM). The NO (Off) setting indicates that the DSR signal is received from an external DCE. The default setting is NO.

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Note: Settings for the following fields are determined by the service provider settings. Cabletron suggests that you consult the service provider (i.e. AT&T, Sprint, MCI, NYNEX, etc.) for the correct settings.

T1 Timeslot View

Displays the status of the T1 Timeslot Conﬁguration Table. The selections for this ﬁeld toggle between Active and New. The Active setting displays current Timeslot Conﬁguration Table settings. The New setting allows you to change Timeslot Conﬁguration Table settings. The default setting for the Timeslot Conﬁguration T able is all Timeslots not assigned.

T1 Line Coding Physical

Displays the line coding for the physical T1 line. The selections toggle between B8ZS, and AMI. The default setting for this ﬁeld is B8ZS.

T1 Frame Type

Displays the T1 Frame type. You set the T1 Frame Type by changing the hardware conﬁguration switch. Refer to Chapter 3.2 Setting the Conﬁguration Switches. The available T1 Frame Types are ESF and D4. The default setting for this ﬁeld is ESF.

T1 Xmit Clk Src

Displays the T1 Transmit Clock Source. You set the T1 Xmit Clk Src by changing the hardware conﬁguration switch. Refer to Chapter 3.2 Setting the Conﬁguration Switches. The selections for this ﬁeld are Loop Timing (Extracted Line Data) and Local Timing (Internal Clock). The default setting for this ﬁeld is Loop Timing.

5.7.3 Setting the Active WAN Port Field

To set the Active WAN Port:

1. Use the arrow keys to highlight the Active WAN Port field.

2. Press the Return key to toggle the selections.

3. After reaching the desired selection, use the arrow keys to highlight the SAVE command.

4. Press the Return key. The message “SAVE DONE” appears and Local Management saves the changes to memory.

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5.7.4 Setting the SyncPort Type Field

To set the SyncPort type:

1. Use the arrow keys to highlight the SyncPort Type field.

2. Press the Return key to toggle the selections.

3. After reaching the desired selection, use the arrow keys to

highlight the SAVE command.

4. Press the Return key. The message “SAVE DONE” appears and

Local Management saves the changes to memory.

5.7.5 Setting WAN Physical Conﬁguration Screen Fields

To set a WAN Physical Conﬁguration screen ﬁeld:

1. Use the arrow keys to highlight the WAN Physical Configuration

screen field you want to change.

2. Press the Return key to toggle the selections.

3. When the desired selection appears, use the arrow keys to

highlight the SAVE command.

4. Press the Return key or press F6. The message “SAVE DONE!”

appears and Local Management saves the changes to memory.

5.7.6 Setting the T1 Timeslot Conﬁguration T able

The T1 Timeslot Conﬁguration Table allows you to conﬁgure how your ETWMIM utilizes the T1 line. The conﬁguration table consists of 24 Timeslots. You must assign each Timeslot an Interface number (04-28, or 00 if the Timeslot is not used).

Note: The ETWMIM automatically assigns Interface 01 for Ethernet, Interface 02 for Token Ring, and Interface 03 for the SYNC port.

When you lease an entire T1 line , you can use all 24 Timeslots (the full T1 bandwidth). If you lease only a fraction of the T1, the service provider will tell you which Timeslots to use.

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You can utilize Timeslots any way you choose. For example, if your ETWMIM has access to a full T1 (24 Timeslots), and you want to communicate with two other ETWMIMs, your conﬁguration could look like ﬁgure 5-8.

ETWMIM#2

16 Channels

ETWMIM#1

Telco

24 Channels

Cloud

ETWMIM#3

8 Channels

Figure 5-8. Sample Timeslot Configuration

Figure 5-9 shows a sample conﬁguration for three ETWMIMs. Of the 24 Timeslots, ETWMIM#1 uses 16 to communicate with ETWMIM#2 and the remaining 8 to communicate with ETWMIM#3. This conﬁguration can vary tremendously, depending on how the Telco carrier maps out the T1 Timeslots. Your service provider will tell you which Timeslots are active.

01-08

09 -16

17 -24

04 04

05 05

04 04

05 05

04 04 04

05 05 05

01-08

09 -16

17 -24

01-08

06 06

00 00

ETWMIM#3

04 04

06 06

00 00

04 04

06 06 06

00 00 00

04 04 04

ETWMIM#1

Figure 5-9. Sample Configuration

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09 -16

17 -24

04 04

00 00

ETWMIM#2

04 04

00 00

04 04 04

00 00 00

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ETWMIM#1 is using the full T1, so all the Timeslots must have an Interface assignment. ETWMIM#2 and ETWMIM#3 only use a fraction of the T1, but the quantity of Timeslots must match those of ETWMIM#1. Unused Timeslots receive an Interface number of 00.

Note: The Interface numbers of ETWMIM#1 and ETWMIM#3 do not have to match. Only the quantity and specific Timeslot must match (the service provider assigns the Timeslot).

To set the Timeslot Conﬁguration Table:

1. Use the arrow keys to highlight the Active setting in the T1

Timeslot View field

2. Press the Return key.

3. The T1 Timeslot View field displays New and the cursor

automatically moves into the Timeslot Configuration table.

4. Use the arrow keys to move to the desired Timeslots in the

Timeslot Configuration table.

5. Type the desired Interface Number (04 to 28; or zero (00) for

unused Timeslots).

Note: The ETWMIM automatically assigns Interface 01 for Ethernet, Interface 02 for Token Ring, and Interface 03 for the SYNC port.

6. Press the Return key.

7. Repeat steps 4 -6 to complete the configuration.

8. Use the arrow keys to highlight the SAVE command.

9. Press the Return key or press F6. The message “SAVE DONE!”

appears and the changes are saved to memory.

10. Use the arrow keys to highlight the T1 Timeslot View field.

11. Press the Return key until the Active selection appears. Verify

that the desired changes have taken effect. The T1 configuration is complete.

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5.8 WAN INTERFACE CONFIGURATION SCREEN

This section describes the features of the WAN Interface Conﬁguration screen. To access the WAN Interface Conﬁguration screen from the Features Selection screen, use the arrow keys to highlight the WAN Int. Conﬁg. option, then press the Return key. The WAN Interface Conﬁguration screen shown in Figure 5-10 appears.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 00.00.00

WAN INTERFACE CONFIGURATION

Interface Number: 003 Data Compression: No Max Xmit Unit: 0 Line Coding: NONE

Active Protocol: NONE

RETURN

SAVE

PT# IF# DLCI STATE

003 004

005 006

007 008

009 010

011 012

013 014

015 016 017

PT# IF# DLCI STATE 018

019 020

021 022 023

024 025

026 027

028 029

030 031

032

Page 5-24

Frame Relay Fields

Active Protocol: FR FR LMI Type: NO LMI FR DLCI Address: 0 FR Circuit State: ACTIVE

Figure 5-10. WAN Interface Configuration Screen

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5.8.1 WAN Interface Conﬁguration Screen Fields

The following sections describe WAN Interface Conﬁguration screen ﬁelds and instructions for setting them.

Interface Number

Displays Interface Numbers 03-28. Use this ﬁeld to conﬁgure the Interface Numbers you assigned to the Timeslots at the W AN Physical Conﬁguration screen. This ﬁeld only displays the active SYNC and T1 interfaces.

Data Compression

Displays the status of Data Compression. Select Yes to activate Data Compression or No to de-activate.

Note: Data Compression is not supported at this time.

Max Xmit Unit

Displays the maximum packet size that can be transmitted on the selected Interface. CRC-16 supports a maximum packet size of 4095. This ﬁeld displays 0 when Frame Relay is not used. When you save the interface conﬁguration, the ETWMIM Local Management automatically assigns 4095 as the Max Xmit Unit.

Line Coding

Displays the T1 Line Coding. If you set T-1 Line Coding to B8ZS (at the WAN Physical Conﬁguration screen), the options are INV-HDLC, JBZS, or NONE. If you set T-1 Line Coding to AMI (at the WAN Physical Conﬁguration screen), the options are JBZS and HDLC.

Active Protocol

Displays the active Link Layer protocol. This ﬁeld displa ys PPP (P oint to Point), FR (Frame Relay), or NONE.

If you select FR the following ﬁeld appears:

FR LMI Type: This field displays NO LMI or T1-617-D.

If you select NO LMI the following ﬁelds appear:

FR DLCI Address: This field lets you select the DLCI address (the specified DLCI address values are 16 - 991).

FR Circuit State: This field displays ACTIVE, INACTIVE, OR INVALID.

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PT#

Displays the Bridge Ports (003-032) that the ETWMIM Local Management automatically assigns to an Interface. If the active protocol for this interface is PPP, Local Management assigns only one WAN bridge port per interface. If the active protocol is Frame Relay, Local Management may assign up to 30 WAN bridge ports per interface.

Note: The ETWMIM has 32 available bridge ports. Ethernet is bridge port 001 and Token Ring is bridge port 002. The remaining 30 bridge ports (003-032) are available for WAN applications.

You can assign the 30 WAN bridge ports to the 24 interfaces in the conﬁguration that suits your needs. For example, you can assign all 30 WAN bridge ports to one interface. In this example, the remaining 23 interfaces would not have WAN bridge ports available.

The quantity of bridge ports for a Frame Relay network is determined by the quantity of DLCIs (Data Link Connection Identiﬁers) assigned to that Interface. This is determined either manually or by the T1.617-D LMI (Local Management Interface).

IF#

Displays the Interface that is associated with the bridge port.

DLCI

Displays the Data Link Carrier Identiﬁer. This ﬁeld is speciﬁc to the Frame Relay protocol. If the active protocol for this interface is PPP, then PPP will appear in this ﬁeld.

STATE

Displays the status of the bridge port. This ﬁeld is speciﬁc to the Frame Relay protocol. If the active protocol is Frame Relay, this ﬁeld displays the status as ACTIVE, INACTIVE, or INVALID. If the active protocol is PPP, this ﬁeld appears empty.

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5.8.2 Conﬁguring PPP Interfaces

The ETWMIM Local Management automatically assigns the next available bridge port to interfaces. There are 30 Bridge Ports available.

To conﬁgure an Interface Number:

1. Use the arrow keys to highlight the Interface Number field.

2. Press the Return key to select the Interface Number (02-26) you

want to configure.

Note: Before you configure an Interface Number to a Bridge Port, you must first assign the Interface Number to a Timeslot. Refer to section

5.7.6, Setting the T1 Timeslot Configuration Table.

3. Use the arrow keys to highlight the Active Protocol field.

4. Press the Return key to select PPP or NONE.

• Select PPP to assign a Bridge Port

• Select NONE to remove a previously assigned Bridge Port

5. Use the arrow keys to highlight the SAVE command.

6. Press the Return key or press F6. The message “SAVE DONE!”

appears. The ETWMIM Local Management automatically assigns an Active Port Number (PT#) to the Interface number (IF#) and the changes are saved to memory.

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5.8.3 Conﬁguring Frame Relay Interfaces

The ETWMIM Local Management Automatically assigns bridge ports to interfaces. There are 30 Bridge Ports available.

To conﬁgure an Interface Number:

1. Use the arrow keys to highlight the Interface Number field.

2. Press the Return key to select the Interface Number (02-26) you want to configure.

Note: Before you configure an Interface Number to a Bridge Port, you must first assign the Interface Number to a Timeslot. Refer to section

5.7.6, Setting the T1 Timeslot Configuration Table.

3. Use the arrow keys to highlight the Active Protocol field.

4. Press the Return key to select FR, or NONE.

• Select FR to assign a Bridge Port

• Select NONE to remove a previously assigned Bridge Port

5. If you selected FR, the FR LMI Type field appears.

6. Use the arrow keys to highlight the FR LMI Type field.

7. Press the Return key to select T1-617-D or NO LMI.

8. If you selected T1-617-D: a. Use the arrow keys to highlight the SAVE command. b. Press the Return key or press F6. The message “SAVE

DONE!” appears and the changes are saved to memory.

c. After successfully connecting to the Frame Relay Switch, the

Port # and DLCI appear on the screen.

Note: You may have to refresh the WAN Interface Configuration screen to view the Port# and DLCI. To refresh the WAN Interface Configuration screen, exit then re-enter the screen.

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9. If you selected NO LMI:

a. The FR DLCI Address ﬁeld and the FR Circuit State ﬁeld

appear. b. Use the arrow keys to highlight the FR DLCI Address field. c. Enter the DLCI address. Valid DLCI values are decimal

numbers in the range of 16 to 991. For this manual

configuration technique, the DLCI values are provided by the

WAN service provider (i.e. AT&T, Sprint, MCI, NYNEX, etc.). d. Use the arrow keys to highlight the FR Circuit State field. e. Press the Return key to select ACTIVE, INACTIVE, or

INVALID. f. Use the arrow keys to highlight the SAVE command. g. Press the Return key or press F6. The message “SAVE

DONE!” appears and the changes are saved to memory

5.8.4 Setting the Data Compression Field

To set the Data Compression ﬁeld:

Note: This feature is not implemented. It will be functional in future releases of the ETWMIM.

1. Use the arrow keys to highlight the Data Compression field.

2. Press the Return key to toggle between Yes and NO. Select the desired setting.

3. Use the arrow keys to highlight the SAVE command.

4. Press the Return key or press F6. The message “SAVE DONE!” appears. The ETWMIM Local Management automatically assigns an Active Port Number to the Interface number and the changes are saved to memory.

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LOCAL MANAGEMENT

5.8.5 Setting the Max Xmit Unit Field

To set the Max Xmit Unit ﬁeld:

Note: This field is not accessible in Frame Relay.

1. Use the arrow keys to highlight the Max Xmit Unit field.

2. Enter the desired setting.

3. Use the arrow keys to highlight the SAVE command.

5.8.6 Setting the Line Coding Field

To set the Line Coding ﬁeld:

1. Use the arrow keys to highlight the Line Coding field.

2. Enter the desired setting.

3. Use the arrow keys to highlight the SAVE command.

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LOCAL MANAGEMENT

5.9 COMMAND LINE INTERFACE (CLI)

The Command Line Interface (CLI) information screen, Figure 5-11, will be functional for future releases of the ETWMIM.

ETWMIM LOCAL MANAGEMENT

Cabletron ETWMIM Revision 0.00.00

CLI INFORMATION

THIS SCREEN RESERVED FOR THE

CABLETRON COMMAND LINE INTERFACE

COMMUNITY NAMES IP TABLE TRAP TABLE SNMP TOOLS RETURN F7 F8 F9 F10

Figure 5-11. ETWMIM CLI Information Screen

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APPENDIX A

EPIM SPECIFICATIONS

The Ethernet Port Interface Module slides into the front of the ETWMIM and allows access to Ethernet. This module is only used if the FNB Ethernet connection is not in use. See Section 3.3 for information on selecting the Ethernet connection.

A.1 EPIM CABLING GUIDELINES

The following sections describe network design guidelines for connecting the ETWMIM front panel EPIM to the network.

A.1.1 Twisted Pair Cable Requirements for the EPIM-T

The device at the other end of the twisted pair segment must meet IEEE 802.3 10BASE-T speciﬁcations. When you connect a 10BASE-T Twisted Pair Segment to the EPIM-T module, your network must meet the following requirements:

Length

The IEEE 802.3 10BASE-T standard requires that 10BASE-T devices transmit over a 100 meter (328 foot) link using 22-24 A WG unshielded twisted pair wire. However, cable quality largely determines maximum link length. If you use high quality, low attenuation cable, you can achieve link lengths of up to 200 meters. Cable delay limits maximum link length to 200 meters, regardless of the cable type.

Insertion Loss

The maximum insertion loss allowed for a 10BASE-T link is 11.5 dB at all frequencies between 5.0 and 10 MHz. This includes the attenuation of the cables, connectors, patch panels, and reﬂection losses due to impedance mismatches in the link segment.

Impedance

Cabletron Systems 10BASE-T Twisted Pair products will work on twisted pair cable with 75 to 165 ohms impedance. Unshielded twisted pair cables typically have an impedance of between 85 to 110 ohms. You can also use shielded twisted pair cables, such as IBM Type 1 cable, but keep in mind that this cable has an impedance of 150 ohms.

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EPIM SPECIFICATIONS

The high impedance of the IBM Type 1 cable increases signal reﬂection. However, due to cable shielding, and its subsequent lack of crosstalk between shielded pairs, this signal reﬂection has little effect on the quality of the received signal.

Jitter

Intersymbol interference and reﬂections can cause jitter in the bit cell timing, resulting in data errors. A 10BASE-T link must not generate more than 5.0 nsec. of jitter. If your cable meets the impedance requirements for a 10BASE-T link, jitter should not be a concern.

Delay

The maximum propagation delay of a 10BASE-T link segment must not exceed 1000 nsec. This 1000 nsec. maximum delay limits the maximum link segment length to no greater than 200 meters.

Crosstalk

Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 10BASE-T transceivers are designed so that the user does not need to be concerned about cable crosstalk, provided the cable meets all other requirements.

Noise

Noise can be caused by either crosstalk or externally induced impulses. Impulse noise may cause data errors if the impulses occur at very speciﬁc times during data transmission. Generally, the user need not be concerned about noise. If noise-related data errors are suspected, it may be necessary to either reroute the cable or eliminate the source of the impulse noise.

Temperature

Multi-pair PVC 24 AWG telephone cables typically have an attenuation of approximately 8 to 10 dB/100m at 20° C (78° F). The attenuation of PVC insulated cable varies signiﬁcantly with temperature. At temperatures greater than 40° C (104° F), we strongly recommend that you use plenum-rated cables to ensure that cable attenuation remains within speciﬁcation.

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EPIM SPECIFICATIONS

A.1.2 Multimode Fiber Optic Cable Requirements for the

EPIM-F1 and EPIM-F2

Table A-1 shows Multimode Fiber Optic Cable speciﬁcations for the EPIM-F1 and EPIM-F2 modules.

Table A-1. Multimode Fiber Optic Cable Specifications

Cable Type Attenuation Maximum Cable Length

50/125 µm 13.0 dB or less The maximum allowable fiber

optic cable length is 2 km

62.5/125 µm 16.0 dB or less

(2187.2 yards).

100/140 µm 19.0 dB or less

Attenuation

You must test the ﬁber optic cable with a ﬁber optic attenuation test set adjusted for an 850 nm wavelength. This test veriﬁes that the signal loss in a cable is within an acceptable level. Table A-1 shows the attenuation for each Multimode cable type.

Fiber Optic Budget and Propagation Delay

When determining the maximum ﬁber optic cable length, the ﬁber optic budget delay and total network propagation should be calculated and taken into consideration before ﬁber optic cable runs are incorporated in any network design.

Fiber optic budget is the combination of the optical loss due to the ﬁber optic cable, in-line splices, and ﬁber optic connectors.

Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the entire network is 25.6 µsec, if the total propagation delay between any two nodes on the network exceeds 25.6 µsec, then bridges should be used.

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EPIM SPECIFICATIONS

A.1.3 Single Mode Fiber Optic Cable Requirements for

the EPIM-F3

Table A-2 shows Single Mode Fiber Optic Cable speciﬁcations for the EPIM-F3.

Table A-2. Single Mode Fiber Optic Cable Specifications

Cable Type Attenuation Maximum Cable Length

8/125-12/125 µm 10.0 dB or less The maximum allowable fiber

optic cable length is 5 km (3.1 miles) with bridges at each segment end. However, IEEE 802.3 FOIRL specifications specify a maximum of 1 km (1093.6 yards).

Attenuation

You must test the ﬁber optic cable with a ﬁber optic attenuation test set adjusted for an 1300 nm wavelength. This test veriﬁes that the signal loss in a cable is 10.0 dB or less for any given single mode ﬁber optic link.

Fiber Optic Budget and Propagation Delay

Fiber optic budget is the combination of the optical loss due to the ﬁber optic cable, in-line splices, and ﬁber optic connectors. When determining the maximum ﬁber optic cable length, the ﬁber optic budget (total loss of 10.0 dB or less between stations) and total network propagation delay should be calculated and considered before ﬁber optic cable runs are incorporated in any network design.

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EPIM SPECIFICATIONS

A.1.4 Thin-Net Cable Requirements for the EPIM-C

When you connect a thin-net segment to the ETWMIM (via an EPIM-C), your network must meet the following requirements:

Cable Type

50 ohm RG-58A/U type coaxial cable must be used when making up a thin-net cable segment.

Length

The thin-net segment must be no longer than 185 meters.

Terminators

Terminate each end of a thin-net segment.

Connectors

A maximum of 29 tee-connectors may be used throughout the length of cable segment for host connections. If an excessive number of barrel connectors are used within the cable segment, such as ﬁnished wall plates with BNC feed-throughs, then a reduced number of host connections may be required. For special network design, contact Cabletron Systems Technical Support.

Grounding

For safety, ground only one end of a thin-net segment. Do NOT connect EPIM BNC ports to earth ground.

Warning: Connecting a thin-net segment to earth ground at more than one point could produce dangerous ground currents.

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EPIM SPECIFICATIONS

A.1.5 AUI Cable Requirements for the EPIM-A and EPIM-X

When you connect an external network segment to the ETWMIM (via an EPIM-A or EPIM-X), the AUI cable must meet the following requirements:

AUI Cable

The AUI cable connecting the module to a device must be IEEE 802.3 type cable.

Length

The AUI Cable must not exceed 50 meters in length. If 28 AWG thin ofﬁce drop AUI cable is used, then the maximum cable length is limited to 50 feet (15.24 meters).

Grounding

The connector shell of the EPIM-A and the EPIM-X are connected to ground.

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EPIM SPECIFICATIONS

A.2 EPIM CONNECTOR SPECIFICATIONS

The following sections outline speciﬁcations for each of the EPIM connectors.

A.2.1 EPIM-T (10BASE-T Twisted Pair Port)

Internal Transceiver:Cabletron Systems TPT 10B ASE-T Twisted Pair

Transceiver Type: 8 Pin RJ-45 Jack A slide switch on the EPIM-T determines the cross over status of the

cable pairs. The switch residing on the X side indicates the pairs internally cross over. If the switch resides on the = side, the pairs do not internally cross over. See Fig. A-1.

Position X (crossed over)

1. RX+

2. RX-

3. TX+

4. NC

5. NC

6. TX-

7. NC

8. NC

Position = (not crossed over)

1. TX+

2. TX-

3. RX+

4. NC

Figure A-1. Crossover Switch on the EPIM-T

5. NC

6. RX-

7. NC

8. NC

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EPIM SPECIFICATIONS

A.2.2 EPIM-F1 and EPIM-F2 (Multimode Fiber Optic Ports)

Internal Transceiver: Cabletron Systems FOT-F™ Fiber Optic

Transceiver

Type:

EPIM-F1: SMA fiber optic ports

EPIM-F2: ST fiber optic ports

Figure A-2. EPIM-F1 and EPIM-F2

arameter Typical

Receive Sensitivity: -29.5 dBm Max Receive Power: -8.2 dBm Transmitter Power Into –

50/125 µm ﬁber: -13.0 dBm

62.5/125 µm ﬁber: -10.0 dBm 100/140 µm ﬁber: -7.0 dBm

Bit Error Rate: Better than 10

-10

Note: The above transmitter power and receive sensitivity levels represent Peak Power Levels after optical overshoot. You must use a Peak Power Meter to correctly compare the above values to those you measure on any particular port. If you measure Power Levels with an Average Power Meter, you must subtract 3 dBm from the measurement to correctly compare measured values to the above values (e.g., -29.5 dBm peak = -32.5 dBm average).

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EPIM SPECIFICATIONS

A.2.3 EPIM-F3 (Single Mode Fiber Optic Port)

Internal Transceiver:Cabletron Systems FOT-F3™ Fiber Optic

Transceiver

Type: ST ﬁber optic ports

Figure A-3. EPIM-F3

Note: Transmitter power is inversely proportional to temperature rise. Use the Output Power Coefﬁcient to calculate increased or decreased power output for your operating environment. For example, typical power output at 25C equals -16.4 dBm. For a 4C temperature increase, multiply the typical coefﬁcient (-0.15 dBm) by four, and add the result to typical output power (4 x -0.15 dBm + -16.4 dBm = -17.0 dBm).

arameter Typical Minimum Maximum

Transmitter Peak Wave Length: 1300 nm 1270 nm 1330 nm

Spectral Width: 60 nm — 100 nm

Rise Time: 3.0 ns 2.7 ns 5.0 ns Fall Time: 2.5 ns 2.2 ns 5.0 ns Duty Cycle: 50.1% 49.6% 50.7%

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EPIM SPECIFICATIONS

Parameter Typical

TX Power: -15.1 dBm TX Budget: 14.4 dBm

RX Sensitivity: -29.5 dBm

MAX Receive

-6.99 dBm

Power:

Bit Error Rate: Better than 10

-10

Note: The above transmitter power levels and receive sensitivity levels represent Peak Power Levels after optical overshoot. You must use a Peak Power Meter to correctly compare the above values to those you measure on any particular port. If you measure Power Levels with an Average Power Meter, you must subtract 3 dBm from the measurement to correctly compare those measured values to the values listed above (e.g., -29.5 dBm peak = -32.5 dBm average).

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EPIM SPECIFICATIONS

A.2.4 EPIM-C (BNC Port)

Internal Transceiver: Cabletron Systems TMS-3™ Transceiver

Type: BNC receptacle, with gold center contact, for

use with BNC type tee-connectors and RG-58 thin-net cable.

Internal Termination Switch = On (internally terminated) = Off (need external termination)

Figure A-4. EPIM-C (with BNC Port)

Termination: Using the switch to the side of the port, you can

internally terminate the port on the module via a built-in 50 ohm terminator. This eliminates the need to connect the port to a tee-connector and terminator.

Grounding: For safety, connect only one end of a thin-net

segment to earth ground. Do not connect the BNC port of an EPIM-C to earth ground.

Warning: Connecting a thin-net segment to earth ground at more than one point could produce dangerous ground currents.

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EPIM SPECIFICATIONS

A.2.5 EPIM-A and EPIM-X (AUI Ports)

Interface Connector: DB-15 Port (female connector for EPIM-A,

male connector for EPIM-X).

Type: 15 position D type receptacle

Figure A-5. EPIM-A and EPIM-X (AUI Ports)

Pin 1 Logic Ref. Pin 9 Collision -

2 Collision + 10 Transmit 3 Transmit + 11 Logic Ref. 4 Logic Ref. 12 Receive 5 Receive + 13 Power (+12 Vdc) 6 Power Return 14 Logic Ref. 7 No Connection 15 No Connection 8 Logic Ref.

Connector Shell: Protective Ground

A.3 CONNECTING AN EPIM TO THE ETHERNET NETWORK

The procedure for connecting Ethernet segments to the unit vary depending on the media type and ports you connect. Refer to the following list and perform the procedure described in the subsections that apply:

• EPIM-A A.3.1

• EPIM-T A.3.2

• EPIM-F1, F2, F3 A.3.3

• EPIM-C A.3.4

• EPIM-X A.3.5

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EPIM SPECIFICATIONS

A.3.1 Connecting an AUI Cable to an EPIM-A

Caution: Ensure that the external transceiver to which the ETWMIM will be connected does not have the signal quality error (SQE or “heartbeat”) test function enabled. The ETWMIM will not operate if the transceiver has the SQE test function enabled, and the network will be unusable. Refer to the applicable transceiver manual.

To connect an EPIM-A to an external network segment:

1. Attach an external transceiver to the network segment that will be connected to the AUI port. Refer to the applicable transceiver manual.

2. Attach an AUI cable, no longer than 50 meters in length, to the transceiver connected to the network in step 1.

3. Connect the AUI cable to the AUI port located on the EPIM-A. See Figure A-6.

4. Lock the AUI connector into place using the connector slide latch.

5. Check that the PWR LED on the EPIM-A is on. If the LED is not on, contact Cabletron Systems Technical Support.

Figure A-6. The EPIM-A

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EPIM SPECIFICATIONS

6. If the PWR LED is on with the AUI cable disconnected, continue with the following checks:

a. Check the AUI connections for proper pinouts. The pinouts for

the transceiver connection are listed in this appendix. b. Check the cable for continuity. c. Reconnect the AUI cable to the ETWMIM and the device.

If the LED is still not on after reconnecting the segment, contact Cabletron Systems Technical Support.

A.3.2 Connecting an Unshielded Twisted Pair Segment to an

EPIM-T

Before connecting a segment to the EPIM-T, check each end of the segment to determine if the wires have been crossed-over for the proper connection. If the wires do not cross over, use the switc h on the EPIM-T to internally cross over the RJ45 port. Refer to Figure A-7 to properly set the EPIM-T crossover switch.

Position X (crossed over)

1. RX+

2. RX-

3. TX+

4. NC

5. NC

6. TX-

7. NC

8. NC Position =

(not crossed over)

Figure A-7. EPIM-T Crossover Switch

Page A-14

1. TX+

2. TX-

3. RX+

4. NC

5. NC

6. RX-

7. NC

8. NC

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EPIM SPECIFICATIONS

To connect an EPIM-T to a Twisted Pair Segment:

1. Connect the twisted pair segment to the module by inserting the RJ45 connector on the twisted pair segment into the RJ45 port on the module. See Figure A-7.

2. Check that the EPIM’s LNK LED is on. If the LED is not on, perform each of the following steps until it is:

a. Check that the 10B ASE-T device at the other end of the twisted

pair segment is powered up.

b. Verify that the RJ45 connector on the twisted pair segment has

the proper pinouts. c. Check the cable for continuity. d. Check that the twisted pair connection meets dB loss and cable

specifications outlined in Twisted Pair Network Requirements. e. Check that the crossover switch is in the correct position.

If a link still has not been established, contact Cabletron Systems Technical Support.

A.3.3 Connecting a Fiber Optic Link Segment to an EPIM-F1,

EPIM-F2, or EPIM-F3

When connecting a ﬁber optic link segment to an EPIM-F1, F2, or F3 keep the following in mind:

• If you are connecting a ﬁber optic link segment with SMA 906

connectors to an EPIM-F1 with SMA ports, ensure that half

alignment sleeves are in place on each connector. A full

alignment sleeve will damage the receive port. SMA 905

connectors do not need alignment sleeves.

• If you are connecting a ﬁber optic link segment with ST

connectors to an EPIM-F2/F3 with ST ports, keep in mind that

ST connectors attach to ST ports much like BNC connectors

attach to BNC ports.

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EPIM SPECIFICATIONS

Inert the connector into the port with the alignment key on the connector inserted into the alignment slot on the port. The connector is then turned to lock it down.

• The physical communication link consists of two strands of ﬁber optic cabling: the Transmit (TX) and the Receive (RX). The Transmit strand from the applicable port on the module will be connected to the Receive port of a ﬁber optic Ethernet device at the other end of the segment. F or example , TX of the applicable port on the module will go to RX of the other ﬁber optic device. The Receive strand of the applicable port on the module will be connected to the Transmit port of the ﬁber optic Ethernet device. For example, RX of the applicable port on the module will go to TX of the other ﬁber optic device . W e recommend that you label the ﬁber optic cable to indicate which ﬁber is Receive and which is Transmit. When you buy ﬁber optic cable from Cabletron Systems, it is labeled so that: at one end of the cable, one ﬁber is labeled 1, and the other ﬁber is labeled 2. This pattern is repeated at the other end of the cable. If you did not purchase your cable from Cabletron Systems, be sure you label your cable as described above.

Caution: Do not touch the ends of the fiber optic strands, and do not let the ends come in contact with dust, dirt, or other contaminants. Contamination of the ends can cause problems in data transmissions. If the ends become contaminated, clean them with alcohol using a soft, clean, lint free cloth.

To connect a ﬁber optic link segment to an EPIM-F1, EPIM-F2, or an EPIM-F3:

1. Remove the protective plastic covers from the fiber optic ports on the applicable port on the module and from the ends of the connectors on each fiber strand.

2. Attach the fiber labeled 1 to the applicable receive port, labeled RX, on the module. See Figure A-8.

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EPIM SPECIFICATIONS

SMA 906 Connectors w/

Half Alignment Sleeves

SMA 905 Connectors

ST Connectors

Figure A-8. The EPIM-F1, EPIM-F2 and EPIM-F3

3. Attach the fiber labeled 2 to the applicable transmit port labeled

TX, on the module.

4. At the other end of the fiber optic cable, attach the fiber labeled 1

to the transmit port of the device.

5. Attach the fiber labeled 2 to the receive port.

6. Check that the EPIM’s LNK LED is on. If the LED is not on,

perform the following steps until it is: a. Check that the power is turned on for the device at the other

end of the link.

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EPIM SPECIFICATIONS

b. Verify that the fiber strands are properly “crossed over”

between the applicable port on the module and the fiber optic device at the other end of the fiber optic link segment.

c. Verify that the fiber connection meets the dB loss specifications

outlined in Fiber Optic Network Requirements.

If a link still has not been established, contact Cabletron Systems Technical Support.

A.3.4 Connecting a Thin-Net Segment to an EPIM-C

To connect a thin-net segment to an EPIM-C:

1. Set the Internal Termination Switch, located to the right of the port and labeled TERM to:

• The on position (•) if the thin-net segment connected directly to

the port will be internally terminated at the port.

• The off position (o) if the thin-net segment will not be

terminated at the port or externally terminated.

2. If the Internal Termination switch is in the On position, connect the thin-net segment directly to the BNC port as shown in Figure A-9.

3. If the Internal Termination switch is in the Off position: a. Attach a BNC tee-connector to the BNC port on the module. b. Attach the thin-net segment to one of the female connectors on

the tee-connector.

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EPIM SPECIFICATIONS

Note: You must terminate each segment attached to the tee-connector. If you do not attach a segment to one of the female connections on the tee-connector, then a terminator must be placed on that connection.

c. Attach another thin-coax segment or a terminator to the other

female connector on the tee-connector.

Attach thin-net segment directly to BNC connector when internal termination switch is set to ON ( ).

When internal termination switch is set to OFF ( ):

Connect BNC tee-connector to port. Attach a terminator or terminated

thin-net segment to one female connector of tee-connector.

Connect a terminated thin-net segment to other female connector of tee-connector.

Figure A-9. The EPIM-C

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EPIM SPECIFICATIONS

A.3.5 Connecting an AUI Cable to an EPIM-X

Caution: The signal quality error (SQE) switch remains in the OFF position for most network connections. However, some Data Terminal Equipment (DTE) requires SQE. Refer to your DTE manual for SQE requirement information.

To connect an EPIM-X to a device not requiring SQE:

1. Check that the SQE LED on the EPIM-X is off. If the SQE LED is on, check the position of the SQE switch.

Note: If the SQE light remains on, even though the SQE switch is in the OFF position, contact Cabletron Technical Support.

2. Attach one end of an AUI cable, no longer than 50 meters in length, to the port located on the EPIM-X (Figure A-10) and the other end to the intended node.

ON Position (Toward Back of EPIM)

OFF Position (Toward Front of EPIM)

OFF

Figure A-10. The EPIM-X

Page A-20

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APPENDIX B

DOWNLOADING AN IMAGE FILE

This appendix provides instructions for downloading an image ﬁle to the ETWMIM by setting speciﬁc MIB OID strings. To set OID strings, you can use the SNMP Tools screen described in Chapter 5.6 of this manual or any MIB walking tool. Refer to speciﬁc MIB walking tool documentation for instructions on how to set MIB OID strings.

Note: You can also download an image file using various remote management packages such as Cabletron’s Remote LANVIEW®/ Windows. Refer to specific package documentation for image file download procedures.

The ETWMIM supports the following Download applications:

• Standard Local Download - the ETWMIM automatically disables management while you download the new ﬁrmware image.

• Remote Runtime Download - the ETWMIM continues to operate without interruption while you download the new ﬁrmware image. The ETWMIM stores the new image in Flash memory. It continues to operate with the old ﬁrmware image executing in processor memory until you reset the ETWMIM.

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DOWNLOADING AN IMAGE FILE

B.1 GETTING STARTED

Cabletron ships two versions of the same ﬁrmware image ﬁle with each upgrade kit. The ﬁrst ﬁle, sufﬁxed with .hex (after it has been decompressed from a .zip) is for Standard Local Downloading. The second ﬁle, sufﬁxed with .ﬂs (after it has been decompressed from a .zip) is for Remote Runtime Downloading.

Before you can download the image to a device, you must:

• load the image ﬁle onto your network rarp server

Note: For information on how to setup a workstation as a rarp server, refer to your specific workstation documentation and the guidelines outlined in this instruction guide.

• decompress the image ﬁle.

Note: For your convenience, Cabletron includes the PKUNZIP utility for easy decompression of the “zipped” file. If you are using a UNIX workstation as a rarp server, and you do not have a decompression utility that recognizes the PKZIP format, you can obtain a copy of a UNIX decompression utility or the image file from the Cabletron Systems FTP server. Contact Cabletron Technical Support for details.

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DOWNLOADING AN IMAGE FILE

B.2 SETTING UP A UNIX WORKSTATION AS A RARP

SERVER

Due to variations between UNIX systems, and individual conﬁgurations, this section provides only GUIDELINES for conﬁguring a UNIX workstation to perform an image ﬁle download. The instructions include command examples, where appropriate. Bold lettering in examples indicates operator entry.

Caution: If unsure how to properly configure your UNIX workstation using these guidelines, contact your Systems Administrator.

Before you start:

• Editing ethers or hosts ﬁles requires Root/Superuser access.

• Downloading an image ﬁle requires setting up your UNIX workstation as a rarp server.

To set up a UNIX workstation:

1. Edit the /etc/ethers file by adding the ETWMIM Ethernet address, followed by a unique name (e.g., 00:00:1d:12:12:ce ETW).

Note: Colons replace dashes in the ethernet address.

2. Edit the /etc/hosts file by adding the ETWMIM IP address and follow it with the same unique name you used in step #1 (e.g.,

132.177.118.24 ETW).

3. If you already have a /tftpboot directory, confirm the rarp setup of your workstation as follows:

Request a process status and grep for rarpd (e.g., unix% ps -aux | grep rarpd).

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DOWNLOADING AN IMAGE FILE

The following information represents a typical output: user 161 7.7 1.2 32 184 p3 S 12:00 grep rarpd

root 87 0.0 0.9 48 136 ? S 11:05 rarpd -a root 88 0.0 0.0 24 0 ? IW 11:05 rarpd -a

The term rarpd -a, located at the end of the root string, indicates rarp is active. If rarp is NOT running, only the grep process appears.

4. If you do NOT have a /tftpboot directory, then you must create one (e.g., unix% mkdir tftpboot), and start the rarp daemon (e.g., unix% rarpd -a).

5. Ensure that the /tftpboot directory is not owned (e.g., unix% chown nobody tftpboot).

6. Store the hex image file in the /tftpboot directory as etw.hex.

Note: This step requires decompression of the zipped image file. If you do not have a UNIX unzip utility, access to a PC with pkunzip, or a way to FTP the decompressed image to your UNIX workstation, contact Cabletron Technical Support.

7. Edit the /etc/inetd.conf file by removing anything prior to the tftpboot daemon (e.g., the # sign) that comments-out the line.

8. Kill the inetd process (e.g., unix% kill -HUP ‘process ID number’), and then restart the process (e.g., unix% inetd), to enable the revised inetd.conf file.

Note: You must request a process status and grep for inetd to obtain the process ID number (see step 3 above).

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DOWNLOADING AN IMAGE FILE

B.3 STANDARD LOCAL DOWNLOAD

Table B-1 provides a step by step procedure for downloading the ﬁrmware image ﬁle. This section provides speciﬁc MIB OIDs, their names, and the required setting for proper image ﬁle download. Refer to your speciﬁc MIB walking tool documentation for instructions on how to set MIB OID strings.

The Download OIDs for Cabletron products reside in Cabletron enterprise MIBs (group 52). The speciﬁc OIDs necessary to perform an image ﬁle download reside in the common download group under ctDL (Cabletron Download). The full OID string to reach this group is:

1.3.6.1.4.1.52.4.1.5.8.1

When performing the steps in Table B-1, keep the following in mind:

• You must follow the steps in order.

• Enter the IP address of the rarp server in standard dotted decimal notation (e.g., 132.177.118.24).

• Enter the FULL path to the image ﬁle in the ctDLTFTPRequest OID, including the name of the image ﬁle (e.g., c:\tftpboot\etw.hex).

Table B-1. Standard Download Procedure

Step

(1). ctDLForceOnBoot 1.3.6.1.4.1.52.4.1.5.8.1.1.0 integer 1 (2). ctDLCommitRAMToFlash 1.3.6.1.4.1.52.4.1.5.8.1.2.0 integer 1 (3). ctDLTFTPRequestHost 1.3.6.1.4.1.52.4.1.5.8.1.4.0 IP

(4). ctDLTFTPRequest 1.3.6.1.4.1.52.4.1.5.8.1.5.0 string

(5). ctDLInitiateColdBoot 1.3.6.1.4.1.52.4.1.5.8.1.3.0 integer 1

OID Name OID Number Data

Type

address

(ASCII)

Enter the IP address of the rarp server.

Enter the path to the image ﬁle.

SNMP

OID Data

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DOWNLOADING AN IMAGE FILE

B.4 REMOTE RUNTIME DOWNLOAD

Warning: If the Runtime Download is interrupted, the Firmware Image in Flash memory will be erased. The ETWMIM will continue to operate until it is either Reset or Powered OFF and ON. After either of these events, the ETWMIM can Download a Firmware Image from a BootP server ONLY! The process of configuring a BootP Server is discussed at length in Cabletron’s “Remote LANVIEW/Windows Network Control Management User’s Guide” (Chapter 10). Although Runtime Download is a powerful network operations & firmware management feature, careful consideration should be given to both the timing (best when network usage is lowest) and network stability (especially Downloads over a WAN link) at the time of the planned Download.

Table B-2 provides a step by step procedure for downloading the ﬁrmware image ﬁle. This section provides speciﬁc MIB OIDs, their names, and the required setting for proper image ﬁle download. Refer to your speciﬁc MIB walking tool documentation for instructions on how to set MIB OID strings.

1.3.6.1.4.1.52.4.1.5.8.1

When performing the steps in Table B-2 keep the following in mind:

• You must follow the steps in order.

• Enter the IP address of the rarp server in standard dotted decimal notation (e.g., 132.177.118.24).

• Enter the FULL path to the image ﬁle in the ctDLTFTPRequest OID, including the name of the image ﬁle (e.g., c:\tftpboot\etw.ﬂs).

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DOWNLOADING AN IMAGE FILE

Table B-2. Runtime Download Procedure

Step OID Name OID Number Data

Type

(1). ctDLTFTPRequestHost 1.3.6.1.4.1.52.4.1.5.8.1.4.0 IP

address

(2). ctDLTFTPRequest 1.3.6.1.4.1.52.4.1.5.8.1.5.0 string

(ASCII)

(3). ctDLOnLineDownload 1.3.6.1.4.1.52.4.1.5.8.1.16.0 integer 1 = Default setting (normal

(4) ctDLOperStatus

(This OID monitors the progress of the Runtime Download.)

If you selected forceDownLoadReset at Step 3, then DO NOT CONTINUE, you have completed all necessary settings.

1.3.6.4.1.52.4.1.5.8.1.17.0 Integer 2 = Indicates that a TFTP

SNMP OID Data

Enter the IP address of the rarp server.

Enter the path to the image ﬁle.

operation). 2 = forceDownLoad. The new image downloads to Flash memory. The ETWMIM does not use the new image until you press the Reset button. 3 = forceDownLoadReset. The new image downloads to Flash memory. The ETWMIM automatically resets upon completion of the download.

download request has been received but has not yet been activated. 3 = Indicates normal operation. The download started and ﬁnished normally and no reset was speciﬁed or a download has not been started. 4 = Indicates that a download is in progress. 5 = Indicates that download was started but has terminated due to an error.

If you selected forceDownLoad at Step 3, then you can reset the ETWMIM at a later time. You can reset the ETWMIM remotely using the ctDLInitiateColdBoot OID described at Step 5 or manually using the Reset Button or Power Cycle.

(5). ctDLInitiateColdBoot 1.3.6.1.4.1.52.4.1.5.8.1.3.0 integer 1

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APPENDIX C

FCC PART 68 - USER’S INFORMATION

The following instructions are to ensure compliance with the Federal Communications Commission (FCC) Rules, Part 68.

1. All direct connections to T1 lines must be made using standard plugs and jacks.

2. Before connecting your unit, you must inform the local telephone company of the following information:

Port ID REN/SOC FIC USOC

RJ48C

3. If the unit appears to be malfunctioning, it should be disconnected from the telephone lines until you learn if your equipment or the telephone line is the source of the trouble. If your equipment needs repair, it should not be reconnected until it is repaired.

4. The CSU/DSU has been designed to prevent harm to the T1 network. If the telephone company finds that the equipment is exceeding tolerable parameters, the telephone company can temporarily disconnect service, although they will attempt to give advance notice if possible.

5. Under the FCC Rules, no customer is authorized to repair this equipment. This restriction applies regardless of whether the equipment is in or out of warranty.

6. If the telephone company alters their equipment in a manner that will affect use of this device, they must give you advance warning so as to give you the opportunity for uninterrupted service. You will be advised of your right to file a complaint with the FCC.

7. The attached affidavit must be completed by the installer.

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FCC PART 68

8. In the event of equipment malfunction, all repairs should be performed by our Company or an authorized agent. It is the responsibility of the users requiring service to report the need for service to our Company or to one of our authorized agents.

Service can be obtained at Cabletron Systems’ Technical Support: Address: Cabletron Systems, Inc.

35 Industrial Way Rochester, NH 03867

Phone: Monday through Friday

between 8 A.M. and 8 P.M. EST

at (603) 332-9400. CompuServe: GO CTRON from any ! prompt Internet mail: support@ctron.com

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FCC PART 68

AFFIDAVIT FOR THE CONNECTION OF

CUSTOMER EQUIPMENT TO 1.544 MBPS AND/OR

SUBRATE DIGITAL SERVICES

For the work to be performed in the certiﬁed territory of Telco’s name:

State of: Country of: I, , of

(Name of Authorized Representative) (Customer Name)

(Customer’s Address) (Telephone Number)

being duly sworn, state: I have responsibility for the operation and maintenance of the

terminal equipment to be connected to 1.544 Mbps and/or Subrate digital services. The terminal equipment to be connected complies with Part 68 of the Commission’s rules except for the encoded analog content and billing protection speciﬁcations. With respect to encoded analog content and billing protection:

• I attest that all operations associated with the establishment, maintenance and adjustment of the digital CPE with respect to encoded analog content and encoded billing information continuously complies with Part 68 of the FCC’s Rules and Regulations.

• The digital CPE does not transmit digital signals containing encoded analog or billing information which is intended to be decoded within the telecommunications network.

• The encoded analog and billing protection is factory set and is not under the control of the customer.

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