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CONFIGURATION AND INSTALLATION
This chapter lists MMAC configuration guidelines, explains how to
configure the FDCMIM in a hub that also holds Ethernet or Token
Ring MIMs, and then explains how to install the FDCMIM as a stand-
alone concentrator in an FDDI hub.
2.1 INSTALLATION REQUIREMENTS
Before you start the installation, decide how you want to configure the
MMAC. The location of an FDCMIM in an MMAC determines how it
communicates with other FDDI modules in the same hub.
2.2 ADDING MIMS TO AN MMAC
When configuring an MMAC, remember the following:
•
MMAC-3FNB board slot numbers increment from bottom to
top. MMAC-5FNB, MMAC-8FNB, and MMAC-M8FNB slot
numbers increment from right to left.
•
Slot 1 (the farthest slot to the right, or to the bottom) in every
MMAC is a narrow slot reserved for half-width management
modules (like the TRMM, IRM3, or EMME). Do not place full-
width modules in the first slot of an MMAC. When not using a
half-width management module, leave slot 1 empty.
•
An MMAC-5FNB can hold four MIMs, one management
module, and two power supplies. By removing one power
supply, the MMAC-5FNB can hold an extra MIM, assuming
that the remaining power supply has enough capacity to
handle the combined load of the resident MIMs.
•
The FDDI Media Interface Modules (MIMs) consume more
power than other MIMs. Some older MMACs may not have
enough power available to support a planned configuration.
CONFIGURATION AND INSTALLATION
CHAPTER 2
Page 2-1
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