Cabletron Systems 9000 - Manual (Page 10)

Installing the 9Cx14 Chassis
1-2
Redundant Power Supply Modules
The 9C114 and 9C714 support the installation of two power supplies for power
supply redundancy and load sharing. If a 9C500 Power Box is used, up to six
power supplies may be installed.
9C300-1 Environmental Module
The 9C300-1 Environmental Module provides out-of-band management
capabilities, monitors power supply and environmental status, and has a built-in
cooling system. The 9C300-1 Environmental Module is also “hot swappable” so
that it can be removed for repair or replacement without causing network
downtime. For details refer to the
SmartSwitch 9000 9C300-1 Environmental Module
User’s Guide .
The Backplane
The 9C114 SmartSwitch 9000 provides six distinct backplane buses, and the 9C714
provides an additional seventh bus, the Cell Transfer Matrix. Each bus serves a
particular set of needs. The seven backplane buses are shown in Figure 1-1.
Figure 1-1. The SmartSwitch 9000 Backplane Buses
Cell Transfer Matrix
Inter-Networking Bus B
Inter-Networking Bus A
Flexible Network Bus 2
Flexible Network Bus 1
System Management Bus 10
System Management Bus 1