Setup guide

INTRODUCTION
Page 1-6
If a redundant power supply is not desired, a fifth MIM can be
installed in the second power supply module slot.
Note: The power requirements of some FDDI MIM configurations
require dual power supplies. Consult the appropriate manuals for
details.
Hot Swapping
You have the option to “hot swap” power supply modules in the
M5FNB. This allows you to remove or insert power supplies without
powering down the M5FNB.
Note: If you have an FDDI configuration in your chassis which
requires the use of two power supplies, hot-swapping a power supply
unit may cause an interruption in network service.
Flexible Network Bus
The MMAC-M5FNB’s Flexible Network Bus allows the M5PSMs to
load share; it also allows Token Ring or FDDI modules to
communicate with one another, and to co-exist with Ethernet modules
in the same hub. Cabletron Systems offers a full line of media
interface modules that let you create new networks and extend and
connect existing networks.
Removable Fan Tray
The MMAC-M5FNB is equipped with a removable fan tray, which
means that you can replace a failed fan unit quickly, without any
special tools. The fan tray incorporates an LED that indicates fan
status; the same signal that illuminates the LED also alerts the
management module that the fans are operating properly.
WARNING: The fan tray is hot-swappable; however, the MMAC
chassis should not be run for extended periods of time without the fans
installed, as it will quickly overheat.