Cabletron Systems MMAC-Plus 9H423-26 User manual

SmartSwitch 9000
9H423-26
User’s Guide
9032242-02

i
Notice
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.
© Copyright March 1998 by:
Cabletron Systems, Inc.
35 Industrial Way
Rochester, NH 03867-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9032242-02
LANVIEW is a registered trademark, and SmartSwitch is a trademark of Cabletron Systems, Inc.
CompuServe is a registered trademark of CompuServe, Inc.
i960 microprocessor is a registered trademark of Intel Corp.
Ethernet is a trademark of Xerox Corporation.

Notice
ii
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.
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.
DOC Notice
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 Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables
aux appareils numériques de la class Aprescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.

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

Notice
iv
Safety Information
CLASS 1 LASERTRANSCEIVERS
The 9H423-26 is a Class 1 Laser Product
The 9H423-26 uses a Class 1 Laser transceiver. Read the following safety
information before installing or operating these adapters.
The Class 1 laser transceivers use an optical feedback loop to maintain Class 1 operation
limits. This control loop eliminates the need for maintenance checks or adjustments. The
output is factory set, and does not allow any user adjustment. Class 1 Laser transceivers
comply with the following safety standards:
• 21 CFR 1040.10 and 1040.11 U.S. Department of Health and
Human Services (FDA).
• IEC Publication 825 (International Electrotechnical Commission).
• CENELEC EN 60825 (European Committee for Electrotechnical
Standardization).
When operating within their performance limitations, laser transceiver output meets the
Class 1 accessible emission limit of all three standards. Class 1 levels of laser radiation are not
considered hazardous.
Laser Radiation and Connectors
When the connector is in place, all laser radiation remains within the fiber. The maximum
amount of radiant power exiting the fiber (under normal conditions) is -12.6 dBm or 55 x 10
-6
watts.
Removing the optical connector from the transceiver allows laser radiation to emit directly
from the optical port. The maximum radiance from the optical port (under worst case
conditions) is 0.8 W cm
-2
or 8 x 10
3
W m
2
sr-1.
Do not use optical instruments to view the laser output. The use of optical instruments to
view laser output increases eye hazard. When viewing the output optical port, power must
be removed from the network adapter.

v
Contents
Chapter 1 Introduction
Features...........................................................................................................................1-2
Related Manuals............................................................................................................1-6
Getting Help .................................................................................................................. 1-6
Chapter 2 Installing the 9H423-26 Module
Unpacking the Module.................................................................................................2-1
User-Accessible Components......................................................................................2-1
Setting the Module DIP Switch...................................................................................2-2
Installing the Module in the SmartSwitch 9000 Chassis .........................................2-4
The Reset Switch ........................................................................................................... 2-6
Chapter 3 Operation
FENIB..............................................................................................................................3-2
SmartSwitch ASIC.........................................................................................................3-3
Traditional Switch..................................................................................................3-3
VLAN..............................................................................................................................3-3
VLAN Domains......................................................................................................3-4
Fully Meshed VLAN Domains ............................................................................ 3-5
SecureFast VLAN Switches.........................................................................................3-5
i960 Core......................................................................................................................... 3-6
INB NIB ..........................................................................................................................3-6
System Management Buses .........................................................................................3-6
SMB-1 Bus...............................................................................................................3-6
SMB-10 Bus.............................................................................................................3-7
System Diagnostic Controller...................................................................................... 3-7
DC/DC Converter ........................................................................................................3-7
INB Interface..................................................................................................................3-7
ITDM Arbitration levels...................................................................................3-8
Monarch/Slave SmartSwitch 9000 Modules ................................................3-9
Chapter 4 LANVIEW LEDs

Contents
vi
Chapter 5 Specifications
Technical Specifications................................................................................................5-1
CPU..........................................................................................................................5-1
Memory ...................................................................................................................5-1
Standards.................................................................................................................5-1
Network Interfaces ................................................................................................5-1
Safety...............................................................................................................................5-2
Service.............................................................................................................................5-2
Physical...........................................................................................................................5-2
Dimensions .............................................................................................................5-2
Weight......................................................................................................................5-2
Environment...........................................................................................................5-3
Appendix A 9H423-26 Cabling Requirements
Overview.......................................................................................................................A-1
Fast Ethernet Standard Requirements.......................................................................A-2
100BASE-TX...........................................................................................................A-2
100BASE-FX...........................................................................................................A-7
Why is CAT 5 Cable Necessary for 100BASE-TX? ...........................................A-7
Why are CAT 5 Connectors Necessary for 100BASE-TX?.............................A-11
Fiber Optic Cabling.............................................................................................A-13

1-1
Chapter 1
Introduction
The 9H423-26 (Figure 1-1) is a switching module with twenty-six 100 Mbps
Ethernet ports. The module is configured with two RJ21 connectors (Category 5
rated), providing twenty-four ports, and two multimode fiber SC connectors.
Each module also provides an additional port that connects directly to the
Internal Network Bus (INB) backplane interface. This module uses a SmartSwitch
ASIC design and an advanced Intel i960
®
microprocessor. This microprocessor
provides a platform for all management functions within a scalable RISC-Based
Architecture.
This module can operate in two modes: either as a 26-port Ethernet traditional
switch (using 802.1d standards) with a high speed backbone connection, or as a
SecureFast switch (SFS) with 26 Ethernet connections. Each port can be
configured to operate in the full duplex mode. This configuration allows each
100BASE-T port to provide a full 200 Mbps. The 100BASE-T ports can operate in
either half or full duplex mode. The fiber ports operate only in full duplex mode
and operate only at 100 Mbps.
The 9H423-26 module is specifically designed for use in the wiring closet. A
typical configuration would have clients connected to the module (via the RJ21
connectors) and servers located in data centers connected via the 100 Mbps fiber
uplink.
Network management information is available through a variety of methods. All
information based on Simple Network Management Protocol (SNMP) is
accessible either via an in-band (Front Panel port), Side Band (SMB-10), or via the
Environmental Module’s COM ports. Serial Line Internet Protocol (SLIP) or
Point-to-Point Protocol (PPP) is supported by the Environmental Module’s COM
ports. For more information on the SMB-10, SLIP or PPP refer to the
SmartSwitch
9000 Local Management User’s Guide
.
The 9H423-26 also features front panel LANVIEW™ Diagnostic LEDs to offer at-
a-glance status information about each front panel port as well as the operation of
the overall module.

Introduction
1-2
Features
Processor
The 9H423-26 module is equipped with an advanced Intel i960 microprocessor.
This microprocessor provides a platform for all management functions such as
Spanning Tree, RMON, and MIB support, within a scalable RISC-Based
architecture.
Fast Packet Switching
The 9H423-26 module incorporates a hardware-based switch design referred to as
the SmartSwitch ASIC, a collection of custom ASICs designed specifically for
high-speed switching. Because all frame translation, address lookups, and
forwarding decisions are performed in hardware, these modules can obtain a
throughput performance of greater than 750K pps.
Management
The 9H423-26 features SNMP for local and remote management. Local
management is provided through the RS232 COM ports on the SmartSwitch 9000
Environmental Module, using a standard VT220
TM
terminal or emulator. Remote
management is possible through Cabletron’s SPECTRUM or any SNMP-
compliant management tool. Included as management features are the IETF
Standard Management Information Base (MIBs) RMON (RFC 1271), IETF MIB II
(RFC 1213), IETF Bridge MIB (RFC 1493), and a host of other Cabletron enterprise
MIBs. These modules also offer a wide variety of statistical network management
information to enhance network planning and troubleshooting. The 9H423-26
provides information for each front panel Ethernet port, including packet counts
along with errored frame information such as collisions, CRCs, and Giants, via a
variety of industry standard and private MIBS. Industry standard IEEE 802.1d
bridging, including Spanning Tree Algorithm, is supported.
Connectivity
The 9H423-26 module has one interface to the INB and 26 front port connections.
The INB interface is a fixed connection to INB-B that allows the module to
communicate with other SmartSwitch 9000 modules supporting various LAN
technologies including, Token Ring, FDDI, Ethernet, WAN, Fast Ethernet and
ATM. The module is configured with two RJ21 connectors and two SC fiber
connectors. The two RJ21 connectors provide twenty-four 10/100 Mbps Ethernet
ports. The two multimode SC connectors provide 100BASE-FL connections, with
links up to 2000 meters in length.