Cabletron Systems CyberSWITCH CSX400 User manual

CyberSWITCH CSX400 and CSX400-DC
Installation Guide
9032692

CyberSWITCH CSX400 and CSX400-DC Installation Guide i
Notice
Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior
notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL, INDIRECT, SPECIAL, OR
CONSEQUENTIAL DAMAGESWHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS)ARISING OUT OF OR
RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.
 1998 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Part Number: 9032692 June 1998
Cabletron Systems , LANVIEW , QuickSET , and SPECTRUM are registered trademarks, and CyberSWITCH CSX400 , and
CyberSWITCH CSX400-DC are trademarks of Cabletron Systems, Inc.
All other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies.
FCC Notice
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired
operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment uses, generates, and can radiate radio frequency energy and if not installed in accordance
with the operator’s manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area
is likely to cause interference in which case the user will be required to correct the interference at his own expense.
WARNING: Changes or modifications made to this device which are not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.

Notice
ii CyberSWITCH CSX400 and CSX400-DC Installation Guide
Industry Canada Notice
This digital apparatus does not exceed the ClassA limits for radio noise emissions from digital apparatus set out in the Radio
Interference Regulations of the Canadian Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la
class A prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.
VCCI Notice
This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology
Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the
user may be required to take corrective actions.
Cabletron Systems, Inc. Program License Agreement
IMPORTANT: Before utilizing this product, carefully read this License Agreement.
This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and
obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained
in firmware, chips or other media. BY UTILIZING THE ENCLOSED PRODUCT,YOUAREAGREEINGTO BECOME BOUND BY
THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND THE LIMITATION OF WARRANTY AND
DISCLAIMER OF LIABILITY. IFYOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, PROMPTLY RETURN THE
UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.
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 CopyrightAct 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.

Notice
CyberSWITCH CSX400 and CSX400-DC Installation Guide iii
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 TOYOU BY CABLETRON IN
WRITING, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PROGRAM, THE
ACCOMPANYING WRITTEN MATERIALS, AND ANY ACCOMPANYING HARDWARE.
2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL CABLETRON OR ITS SUPPLIERS BE
LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF
BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL,
CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO USE
THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted
rights in accordance with Section 52227-19 (a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its
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For Department of Defense units, the product is licensed with “Restricted Rights” as defined in the DoD Supplement to the Federal
Acquisition Regulations, Section 52.227-7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is
subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at
252.227-7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867-0505.

Notice
iv CyberSWITCH CSX400 and CSX400-DC Installation Guide
Declaration of Conformity
Application of Council Directive(s): 89/336/EEC
73/23/EEC
91/263/EEC
Manufacturer’s Name: Cabletron Systems, Inc.
Manufacturer’s Address: 35 Industrial Way
PO Box 5005
Rochester, NH 03867
European Representative Name: Mr. J. Solari
European Representative Address: Cabletron Systems Limited
Nexus House, Newbury Business Park
London Road, Newbury
Berkshire RG13 2PZ, England
Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC
EC Directive 73/23/EEC
EC Directive 91/263/EEC
EN 55022
EN 50082-1
EN 60950
Equipment Type/Environment: Networking Equipment, for use in a Commercial or Light Industrial
Environment.
We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with this notice conforms to the
above directives.
Manufacturer Legal Representative in Europe
Mr. Ronald Fotino Mr. J. Solari
___________________________________ ___________________________________
Full Name Full Name
Principal Compliance Engineer Managing Director - E.M.E.A.
___________________________________ ___________________________________
Title Title
Rochester, NH, USA Newbury, Berkshire, England
___________________________________ ___________________________________
Location Location

CyberSWITCH CSX400 and CSX400-DC Installation Guide v
Contents
CHAPTER 1 INTRODUCTION
Related Documentation...................................................................................1-1
How to Use This Guide....................................................................................1-2
Document Conventions...................................................................................1-3
Getting Help......................................................................................................1-4
CHAPTER 2 ABOUT THE CSX400
CSX400 Hardware.............................................................................................2-1
WAN Connection........................................................................................2-1
Ethernet LAN Connection .........................................................................2-3
Remote Management Capabilities..................................................................2-3
Optional Features.............................................................................................2-4
CSX400 Firmware Support..............................................................................2-4
IEEE 802.3 Ethernet ...................................................................................2-4
WAN Protocols...........................................................................................2-4
Firmware Data Compression ....................................................................2-5
Inverse Multiplexing (IMUX)......................................................................2-6
HDLC...........................................................................................................2-6
DHCP and NAT...........................................................................................2-7
Frame Relay Protocol................................................................................2-8
Point-to-Point Protocol (PPP)...................................................................2-9
PAP and CHAP Security............................................................................2-9
LQM...........................................................................................................2-10
Multilink Protocol.....................................................................................2-10
ISDN ..........................................................................................................2-10
ISDN Back-up ...........................................................................................2-11
The IP-OSPF Routing Protocol...............................................................2-12
IP-OSPF Hierarchy...................................................................................2-12
HDSL .........................................................................................................2-14

Contents
vi CyberSWITCH CSX400 and CSX400-DC Installation Guide
Bridging and Routing ..............................................................................2-15
Bridging and Routing Protocol Filtering................................................2-16
System Passwords ..................................................................................2-17
Redundancy VS Backup................................................................................2-18
Redundant Topology...............................................................................2-18
Backup Topology.....................................................................................2-18
Simple Network Management Protocol (SNMP)....................................2-19
Software and Firmware Upgrades..........................................................2-22
CHAPTER 3 ETHERNET CABLING REQUIREMENTS
Network Requirements ....................................................................................3-1
10BASE-T Twisted Pair Network ..............................................................3-2
Multimode Fiber Optic Network................................................................3-3
Single Mode Fiber Optic Network.............................................................3-4
10BASE2 Coaxial Cable Network .............................................................3-4
Transceiver Requirements........................................................................3-5
CHAPTER 4 INSTALLATION
Unpacking the CSX400 ....................................................................................4-1
Guidelines for Installations .............................................................................4-1
Installing Interface Modules............................................................................4-2
Installing Ethernet Port Interface Modules (EPIMs)................................4-2
Removing the CSX400 Cover....................................................................4-4
Removing the CSX400-DC Cover .............................................................4-5
Installing WAN Port Interface Modules (WPIMs).....................................4-6
CSX-COMP/ENCR Installation.........................................................................4-8
Installing the CSX400.......................................................................................4-9
Tabletop and Shelf Installations...............................................................4-9
CSX400 and CSX400-DC Rackmount Installation.................................4-10
Connecting the CSX400 to the Power Source.............................................4-14
Connecting the CSX400-DC to the Power Source.......................................4-15

Contents
CyberSWITCH CSX400 and CSX400-DC Installation Guide vii
CHAPTER 5 TROUBLESHOOTING
Troubleshooting CSX400 Hardware ...............................................................5-4
Power (PWR) LED is OFF..........................................................................5-4
Processor (CPU) LED is OFF....................................................................5-4
Processor (CPU) LED is RED....................................................................5-4
Troubleshooting the LAN ................................................................................5-4
Collision (CLN) LED is RED ......................................................................5-4
Link (LNK) LED is OFF...............................................................................5-4
Troubleshooting the WAN...............................................................................5-5
Link (LNK) LED is OFF...............................................................................5-5
Link (LNK) LED is RED..............................................................................5-5
Link (LNK) LED is AMBER.........................................................................5-5
Status 1 (STS1) LED is OFF ......................................................................5-5
Status 1 (STS1) LED is RED......................................................................5-6
Status 1 (STS1) LED is AMBER ................................................................5-7
Status 1 (STS1) LED is GREEN.................................................................5-7
Status 2 (STS2) LED is OFF ......................................................................5-8
Status 2 (STS 2) LED is RED WPIM-HDSL Installed in CSX400.............5-9
Status 2 (STS2) LED is AMBER ................................................................5-9
Status 2 (STS2) LED is GREEN.................................................................5-9
Test (TST) LED is AMBER (blinking)......................................................5-10
Investigating Software Configuration Problems.........................................5-10
Connection to Device Fails During Software Configuration................5-10
User Cannot Communicate with Remote Network Station..................5-11
Troubleshooting the CSX Frame Relay Connection.............................5-11

Contents
viii CyberSWITCH CSX400 and CSX400-DC Installation Guide
APPENDIX A EPIM SPECIFICATIONS
Introduction .....................................................................................................A-1
EPIM-T ..............................................................................................................A-1
EPIM-F2 ............................................................................................................A-2
EPIM-F3 ............................................................................................................A-4
EPIM-C.............................................................................................................. A-5
Connector Type.........................................................................................A-5
Grounding..................................................................................................A-5
EPIM-A and EPIM-X (AUI Port) .......................................................................A-6
APPENDIX B WPIM CABLE SPECIFICATIONS
WPIM-T1 ...........................................................................................................B-1
WPIM-SY........................................................................................................... B-3
EIA-449.......................................................................................................B-4
V.35.............................................................................................................B-5
EIA-232.......................................................................................................B-7
X.21.............................................................................................................B-8
EIA-530, EIA-530 ALT A, EIA-530 A, and EIA-530 A ALT A.................... B-9
WPIM-DDS...................................................................................................... B-11
WPIM-E1.........................................................................................................B-12
WPIM-DI.......................................................................................................... B-14
WPIM-HDSL.................................................................................................... B-15
WPIM-S/T........................................................................................................ B-16

Contents
CyberSWITCH CSX400 and CSX400-DC Installation Guide ix
APPENDIX C MODEM SETTINGS FOR RS-232 DIAL-UP PPP BACKUP
Answer Side Modem Configuration...............................................................C-3
APPENDIX D SPECIFICATIONS AND STANDARDS COMPLIANCE
CSX400, CSX400-DC, and WPIM Environmental Requirements.................D-1
CSX400 Specifications and Compliance Standards ....................................D-1
CSX400-DC Specifications and Compliance Standards..............................D-2
CSX400 and CSX400-DC Regulatory Compliance........................................ D-2
CSX400-DC Regulatory Compliance (Only)..................................................D-2
Individual WPIM Regulatory Compliance......................................................D-3
WPIM-TI......................................................................................................D-3
WPIM-SY ....................................................................................................D-4
WPIM-DDS..................................................................................................D-4
WPIM-E1.....................................................................................................D-5
WPIM-DI......................................................................................................D-5
WPIM-S/T....................................................................................................D-5
WPIM-HDSL ...............................................................................................D-6
APPENDIX E NETWORK INFORMATION WORKSHEETS
APPENDIX F FCC PART 68 - USER’S INFORMATION FOR CSX400 AND CSX400-DC
APPENDIX G GLOSSARY
INDEX

Contents
x CyberSWITCH CSX400 and CSX400-DC Installation Guide

CyberSWITCH CSX400 and CSX400-DC Installation Guide 1-1
1
Introduction
Welcome to the Cabletron Systems CyberSWITCH CSX400 and CSX400-DC
Installation Guide . This guide provides basic configuration information, hardware specifications
and troubleshooting tips for the CSX400 and CSX400-DC. This guide also provides background
information about 10BASE-T Ethernet Local Area Networks (LANs) and guidelines for routing
and bridging over Wide Area Networks (WANs).
Related Documentation
Use the READ ME FIRST! document included with the CSX400 to set up your computer before
starting configuration.
Use the Cabletron Systems QuickSET Configuration Guide to configure the CSX400.
Use the Cabletron Systems CyberMONITOR User’s Guide to monitor the WAN using the
CyberMONITOR graphical user interface.
Use the appropriate Cabletron Systems WPIM Local Management Guide to connect your
CSX400 to a WAN using a TELNET connection.
NOTE
The CSX400 and CSX400-DC have identical features and functions with the exception
of their power source connection.The CSX400 connects to an ac power source and
the CSX400-DC connects to a dc power source.Both the CSX400 and the
CSX400-DC are referred to as the CSX400, unless otherwise specified in this guide.

Chapter 1: Introduction
1-2 CyberSWITCH CSX400 and CSX400-DC Installation Guide
How to UseThis Guide
This guide along with the READ ME FIRST! document, the QuickSET Configuration Guide and
the QuickSET Local Management Guide provide the necessary information to install and
configure the CSX400. Read all of these documents before installing the CSX400.
This guide is organized as follows:
Chapter 1 , Introduction , details document conventions and provides information on getting help.
Chapter 2 , About the CSX400 ,describes the hardware components and software protocols and
features.
Chapter 3 , Ethernet Cabling Requirements ,describes the basic cabling requirements for an
Ethernet Local Area Network (LAN).
Chapter 4 , Introduction , provides detailed installation instructions for connecting the CSX400
and CSX400-DC to a network.
Chapter 5 , Introduction , provides detailed troubleshooting tips using the LANVIEW LEDs on
the CSX400.
Appendix A , EPIM Specifications , provides hardware specifications and pinout information for
available Cabletron Systems Ethernet Port Interface Modules (EPIMs).
Appendix B , WPIM Cable Specifications , provides part number and connector information for
WPIMs.
Appendix C , Modem Settings for RS-232 Dial-up PPP Backup ,
details the backup
configuration of a Frame Relay or PPP nailed-up connection using modems.
Appendix D , Specifications and Standards Compliance , provides hardware specifications and
pinout information for available Cabletron Systems Ethernet Port Interface Modules (EPIMs).
Appendix E , Network Information Worksheets , provides blank network information
worksheets.
Appendix F , FCC Part 68 - User’s Information for CSX400 and CSX400-DC , provides
instructions required to comply with FCC Rules, Part 68.
Appendix G , Glossary , defines commonly used terms.

Document Conventions
CyberSWITCH CSX400 and CSX400-DC Installation Guide 1-3
Document Conventions
The following conventions are used throughout this guide:
NOTE
Note symbol. Calls the reader’s attention to any item of information that may be of
special importance.
TIP
Tip symbol. Conveys helpful hints concerning procedures or actions.
!
CAUTION
Caution symbol. Contains information essential to avoid damage to the equipment.
Electrical Hazard Warning symbol.Warns against an action that could result in
personal injury or death due to an electrical hazard.
WARNING
Warning symbol.Warns against an action that could result in personal injury or death.

Chapter 1: Introduction
1-4 CyberSWITCH CSX400 and CSX400-DC Installation Guide
Getting Help
If you need additional support related to this device, or if you have any questions, comments, or
suggestions concerning this manual, contact the Cabletron Systems Global Call Center:
Before calling the Cabletron Systems Global Call Center, have the following information ready:
• Your Cabletron Systems service contract number
• A description of the failure
• A description of any action(s) already taken to resolve the problem (e.g., changing mode
switches, rebooting the unit, etc.)
• The serial and revision numbers of all involved Cabletron Systems products in the network
• A description of your network environment (layout, cable type, etc.)
• Network load and frame size at the time of trouble (if known)
• The device history (i.e., have you returned the device before, is this a recurring problem, etc.)
• Any previous Return Material Authorization (RMA) numbers
Phone [phone]
Internet mail suppor[email protected]
FTP ctron.com (134.141.197.25)
Login anonymous
Password your email address
BBS [phone]
Modem setting 8N1: 8 data bits, No parity, 1 stop bit
For additional information about Cabletron Systems or our products,
visit our World Wide Web site: http://www.cabletron.com/
For technical support, select Service and Support .

CyberSWITCH CSX400 and CSX400-DC Installation Guide 2-1
2
About the CSX400
The CSX400 (Figure 2-1) is an access device that provides Ethernet Local Area Network (LAN)
connectivity via two Ethernet Port Interface Modules (EPIMs), and offers high-speed Wide Area
Network (WAN) access to remote sites via two WAN Port Interface Modules (WPIMs). The
CSX400 supports IEEE 802.1d transparent bridging, IP and IPX routing, ISDN, Dynamic Host
Configuration Protocol (DHCP), Network Address Translation (NAT) routing, and Inverse
Multiplexing (IMUX) between Ethernet LANs across a WAN.
The CSX400 operates from a standard ac power source and the CSX400-DC operates from a dc
voltage source to meet all the requirements for installation into Telephone Central Office facilities.
Figure 2-1 The CSX400
CSX400 Hardware
This section details the CSX400 hardware capabilities.
WAN Connection
The CSX400 supports Point-to-Point Protocol (PPP) including: Compression Control Protocol
(CCP), Hardware Ziplock Module, Link Control Protocol (LCP), BNCP, IPCP, IPXCP, LQM,
Multilink Protocol (MP) and CHAP and PAP, ISDN-BRI and Frame Relay protocols through one
of the following WAN port interface modules (WPIMs):
•The WPIM-T1 provides a T1 interface through a front panel RJ45 port and includes a built-in
Channel Service Unit/Digital Service Unit (CSU/DSU) for direct connection to a T1 line. The
WPIM-T1 provides both Full T1 or Fractional T1 using 56 or 64 Kbps Time Slots, with a total
throughput of up to 1.544 Mbps.

Chapter 2: About the CSX400
2-2 CyberSWITCH CSX400 and CSX400-DC Installation Guide
•The WPIM-Sync provides a synchronous serial connection of up to 2.048 Mbps to external
communications equipment (e.g., a multiplexer or CSU/DSU). The WPIM-Sync uses a
subminiature 26-pin connector that supports the electrical signal interfaces listed below.
Appendix B, provides complete part number and cable pinout information for the following
electrical signal interfaces:
•EIA-RS449
•V.35
•EIA-RS232D
•X.21
•EIA-RS530
•EIA-530A
•RS530 ALT A
•RS530A ALT A
•The WPIM-DDS provides a 56 Kbps or 64 Kbps Digital Data Service (DDS) connection. The
WPIM-DDS supports remote CSU diagnostic or 64 Kbps clear channel loopback and
non-latching remote DSU diagnostic loopback.
•The WPIM-E1 provides an E1 interface through a front panel RJ45 port and includes a built-in
CSU/DSU for direct connection to an E1 line. The WPIM-E1 provides both Full E1 or
Fractional E1 using 56 or 64 Kbps Time Slots with a total throughput of up to 2 Mbps.
•The WPIM-DI provides a T1 interface through a front panel RJ45 port and includes a built-in
CSU/DSU for direct connection to a T1 line.TheWPIM-DI provides both FullT1 or Fractional
T1 using 56 or 64 Kbps Time Slots and also provides a second Drop-and-Insert interface, which
allows more than one device, such as a PBX, to share a single T1 connection.
•The WPIM-S/T provides an Integrated Services Digital Network (ISDN) 128 Kbps Basic Rate
Interface (BRI) for the CSX400. The WPIM-S/T provides an ISDN back-up link for a remote
site or branch office when the main WPIM for a frame relay or leased line loses a connection
or becomes disabled. An NT-1 adapter is necessary for this interface in the United States.
•The WPIM-HDSL provides a connection for: users in a campus environment, access to local
subscriber loops, or for those who want to send their data over their existing telephone lines.
These lines may run between floors, buildings, or other physical structures, at rates of up to
1.544Mbps. HDSL supports line lengths of up to 3, 657 meters (12,000 feet) over 24American
Wire Gauge (AWG) Unshielded Twisted Pair (UTP) cabling.

Remote Management Capabilities
CyberSWITCH CSX400 and CSX400-DC Installation Guide 2-3
•The WPIM-T1/DDS provides both a T1 and DDS interface that allows you to easily switch
between the two interfaces by changing the physical cabling and reconfiguring QuickSET for
the desired interface. The WPIM-T1/DDS has the capabilities of both the WPIM-T1 and
WPIM-DDS.
Ethernet LAN Connection
The CSX400 provides 10 Mbps Ethernet/IEEE 802.3 support through two Cabletron Systems
Ethernet Port Interface Modules (EPIMs), which are available in a variety of media types.
Appendix A, EPIM Specifications, details the available EPIMs that can be used to configure the
CSX400 for an Ethernet connection.
FLASH EEPROMs — The CSX400 uses a FLASH Electrically Erasable Programmable
Read-Only Memory (EEPROM) that allows new and updated firmware to be downloaded in
conjunction with Cabletron Systems QuickSET or any device using BootP or TFTP protocols.
LANVIEW LEDs — Cabletron Systems LANVIEW Status Monitoring and Diagnostics System is
a troubleshooting tool that helps in the diagnosing of power failures, collisions, cable faults, and
link problems. The LANVIEW LEDs are located on the CSX400 front panel.
RESET Button — The front panel RESET button reboots the CSX400 and initializes the
processor. The RESET button also is used with the mode switches to clear NVRAM.
Remote Management Capabilities
The CSX400 can be remotely managed with any SNMP network management system including
the following:
•Cabletron Systems SPECTRUM for Open Systems Suite of Network Management Products
•Cabletron Systems QuickSET
•Third Party SNMP compliant Network Management Packages

Chapter 2: About the CSX400
2-4 CyberSWITCH CSX400 and CSX400-DC Installation Guide
Optional Features
Rack Mounting Capabilities — The CSX400 can be installed in a 19-inch rack with the
included mounting brackets and screws. Refer to Chapter 4, Installation, for complete rack
mounting instructions.
Hardware Data Compression Module (CSX-COMP/ENCR) — The same industry standard
STAC Electronics Stacker LZS Compression algorithm supported by CSX400 software is made
available by an optional hardware data compression module that accelerates data compression for
the CSX400 over Nailed-up PPP or ISDN and Frame Relay. Depending on the packet type and
size, hardware data compression provides a minimum of 2:1 data compression, giving (effectively)
3 Mbps throughput on each T-1 WPIM interface. To use the hardware data compression module,
compatible equipment (such as another CSX400, or other vendors’equipment which conforms to
the applicable standards), must be in use at both ends of the WAN link. When the hardware data
compression module is installed on the board, it automatically assumes the compression task from
software. There is no configuration necessary to prioritize hardware over software compression.
CSX400 Firmware Support
The CSX400 firmware supports IEEE 802.1d bridging, and IP and IPX routing, and OSI Layer 2
Inverse Multiplexing (IMUX), which allows both WAN channels to be used as a single, high
bandwidth, WAN channel. Wide Area Networking includes Point-to-Point Protocol (PPP), Frame
Relay, and ISDN. Remote access is via Full or Fractional T1, E1, Synchronous, Digital Data
Service, ISDN BRI, or HDSL connections.
This device supports industry-standard protocols, security features, compression algorithms and
network management tools to ensure interoperability with equipment from other vendors.
IEEE 802.3 Ethernet
The CSX400 provides a standard 802.3 MediaAccess Control (MAC) layer for Ethernet
communications. All bridging and routing protocols are supported across the Ethernet link.
WAN Protocols
This device supports the following WAN protocols over the WAN port:
•Point-to-Point Compression Control Protocol (CCP) as defined by RFC 1962
•Inverse Multiplexing (IMUX)
•Dynamic Host Configuration Protocol (DHCP) as defined by RFC 1541