Getting Help; The Intelligent Repeater Module (Irm-2) - Cabletron Systems IRM-2 Installation Manual

INTRODUCTION
1.2

GETTING HELP

If you need additional support related to the Cabletron Systems
IRM-2, or if you have any questions, comments or suggestions related to
this manual, feel free to contact Cabletron Systems' Technical Support at:
Cabletron Systems Inc.
35 Industrial Way
P.O. Box 5005
Rochester, NH 03867-5005
Phone: (603) 332-9400
1.3

THE INTELLIGENT REPEATER MODULE (IRM-2)

The Cabletron Systems Intelligent Repeater Module (IRM-2) (Fig. 1-1) is
the heart of the Cabletron Systems Multi Media Access Center. The
IRM-2 incorporates a high performance IEEE 802.3 repeater to allow
maximum data paths between devices connected to the MMAC.
Since the IRM-2 is SNMP compliant, it can be controlled and monitored
by a variety of SNMP Network Management packages. These include
Cabletron Systems' Remote LANVIEW/Windows, Cabletron Systems'
SPECTRUM, and third party SNMP network management packages.
Additionally, the IRM-2 can be controlled and monitored by IRM2/LM™
- Local Management for the IRM2 via a locally connected terminal.
The IRM-2 incorporates two ports that connect to external network
segments: one pair of IEEE 802.3 FOIRL fiber optic ports and an IEEE
802.3 compliant AUI port. The fiber optic ST ports can accommodate a
wide variety of multi-mode fiber optic cable, including 50/125 m,
62.5/125 m, and 100/140 m fiber optic cable, up to 3km in length. The
AUI port allows you to connect the module to a variety of Ethernet
transmission media including twisted pair, fiber optic, and/or thick or thin
Ethernet coaxial cable via an external transceiver.
Either one of these ports can act as the repeater port to the external
network. When the IRM-2 is first powered up, the AUI port acts as the
repeater port and the fiber ports are off. Using the IRM-2
1-2