Fan Module - Cabletron Systems SmartSwitch 8000 Getting Started Manual

Chapter 1: Features Overview
On both the SSR 8000 and SSR 8600, slot 0 is labeled "CM" and contains the primary
Control Module. The CM slot cannot be used for line cards. The primary Control Module
must be installed in this slot. The CM/1 slot can contain a redundant Control Module (if
you install one) or can contain a line card. Slots 2-7 on the SSR 8000 or slots 2-15 on the SSR
8600 can contain any line cards. (See
page 20 for information about these items.)
You can install line cards in any order in the slots. For example, you could install line cards
in slots 2 and 5 and leave the other line card slots empty. The SSR provides non-blocking
throughput regardless of the software features you are using. Therefore, you do not need
to "load balance" line cards by placing them in certain relationships to balance the load on
the backplane. Regardless of where you install the line cards, the backplane can provide
full, non-blocking throughput.
Backplane
The backplane occupies the rear of the chassis and connects the power supplies, Control
Modules, and line cards together. The power supplies use the backplane to provide power
to the rest of the system. The line cards and Control Modules use the backplane to
exchange control information and packets. The backplane is installed at the factory.
Contact Cabletron Systems if you wish to replace the backplane.

Fan Module

The SSR contains a fan module to provide a cooling air flow across the Control Module(s)
and line cards. The fan module is located on the left side of the Control Modules and line
cards. The SSR 8000 fan module contains two fans; the SSR 8600 fan module contains six
fans. The fan module is installed at the factory, but you can replace the module yourself, if
necessary.
Note:
To ensure that the fan module can provide adequate cooling, always provide a
minimum of 3 inches of clearance on each side of the chassis.
Control Module
The Control Module is the SSR's central processing unit. It contains system-wide bridging
and routing tables. Traffic that does not yet have an entry in the L2 and L3/L4 lookup
tables on individual line cards is sent to the Control Module. After processing traffic, the
Control Module updates the L2 and L3/L4 tables on the line cards that received the traffic.
The line cards thus "learn" about how to forward traffic.
14
"Control Module" on page 14
SSR 8000/8600 Getting Started Guide
and "Line Cards" on