INTRODUCTION
1-4
connected to the MMAC, or whether the module is detecting a collision
from the network.
1.4
REPEATER FUNCTIONALITY
The IRM's IEEE 802.3 compliant repeater provides the MMAC with the
ability to achieve maximum data paths on all Ethernet transmission
media, including 10BASE-T Twisted Pair, Fiber Optic, and Thick or Thin
Ethernet type cabling. To attain these maximum data paths, the IRM
retimes data packets and regenerates the preamble of each data packet that
enters the MMAC.
In addition, the IRM's repeater functionality assures that any problem
segments connected to any port on the MMAC will not affect any other
segments connected to the MMAC. If 33 consecutive collisions are
detected on any segment, or if a collision detector is on for more than 2.4
ms, the IRM will automatically partition that segment from the MMAC.
The segment will automatically be reconnected to the MMAC when a
packet is transmitted onto the segment without causing a collision.
1.5
NETWORK MANAGEMENT CAPABILITIES
The Cabletron Systems IRM can be controlled and managed by a variety
of network management packages. These include:
•
Cabletron Systems' SPECTRUM
•
Cabletron Systems' Remote LANVIEW/Windows
•
Cabletron Systems' IRM/LM (Local Management)
The IRM's network management capabilities provide the necessary
management tools for the IRM to operate at its full capacity. Your ability
to set up parameters within these network management capabilities
ensures optimal performance of the IRM, and, hence, the network.
SNMP compliant management capabilities are also available for the IRM
monitoring by Third Party SNMP compliant Network Management
Packages.
