Repeater Interface Controller Media Interface Modules - Cabletron Systems EMME User Manual

Table 1-1 provides a list of the MMAC-FNB chassis where shunting
capabilities are set at the factory.
MMAC-FNB Chassis
MMAC-3FNB
MMAC-5FNB
MMAC-8FNB
MMAC-M3FNB
MMAC-M5FNB
MMAC-M8FNB
1.2.2 Repeater Interface Controller Media Interface
Modules
Cabletron Systems' MultiChannel family of Media Interface Modules
(MIMs) includes the Repeater Interface Controller (RIC), which is an
IEEE 802.3 compliant multi-port repeater. You can configure these
modules to operate on either the Ethernet B or C bus, via hardware
jumpers or management software. Software management overrides any
hardware configuration setting.
RIC technology provides the MIM with an inter-RIC bus, allowing
multiple RIC MIMs communicating over the RIC bus to act as a single
logical repeater. For example, an Ethernet frame taking a path from one
RIC MIM, to the Inter-RIC bus, to another RIC MIM (the frame being
retimed and regenerated to all ports from the last RIC MIM) has a path
cost equivalent to only one repeater hop. Since Ethernet networks are
limited to four serially linked repeaters, using the RIC repeater offers a
significant advantage. By using cascading RIC MIMs, each of which
support at least 13 cable segments, you can build a much larger network
than you could with stand-alone repeaters.
EMME USER'S GUIDE
ETHERNET MANAGEMENT MODULE OVERVIEW
Table 1-1. MMAC-FNB Chassis
Serial No.
FC000000000 or above
CC000000000 or above
CG000000000 or above
ALL
ALL
DK000000000 or above
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