Chapter 1:
Introduction
Page 1-6
IRM3 User’s Guide
data packets and regenerates the preamble of each data packet that enters
the MMAC.
In addition, IRM3 repeater functionality assures that problem segments
connected to any port on the MMAC do not affect any other segments
connected to the MMAC. If 32 consecutive collisions are detected on any
segment, or if a collision detector is on for more than 2.4 ms, the IRM3
automatically partitions that segment. The segment automatically
reconnects to the MMAC after a packet is transmitted onto the segment
without causing a collision.
1.5 NETWORK MANAGEMENT CAPABILITIES
The Cabletron Systems IRM3 can be controlled and managed by a variety
of network management packages which include the following:
•
Cabletron Systems SPECTRUM
•
Cabletron Systems SPECTRUM Element Manager for Windows
•
Cabletron Systems IRM3/LM (Local Management)
•
Third Party SNMP compliant Network Management Packages
The IRM3 network management capabilities provide the necessary
management tools for the IRM3 to operate at its full capacity. Your ability
to set up parameters within the network management capabilities ensures
optimal performance of the IRM3, and, hence, the network.
For example, a great deal of statistical information on the port, board, and
MMAC device level is gathered by the IRM3, including each of the
following:
•
Packets
•
Bytes Received
•
Collisions
•
Giant Packets
•
Runt Packets
•
Misaligned Packets
•
Frame Size
•
Out of Window Collisions
•
Breakdowns
•
CRC Errors
