Enterasys Networks 8000/8600 - Manual (Page 26)

Hardware Overview
14 Enterasys X-Pedition 8000/8600 Getting Started Guide
Control Modules
The control module is the X-Pedition’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.
Figure 3 shows the front panel of a control module.
Figure 3. Front panel of a control module
Note: Only PCMCIA slot 0 (the upper slot) is active. The control module cannot use two
PCMCIA flash cards at the same time.
Boot Flash
The control module has a boot flash containing the X-Pedition’s boot software and configuration
files. The system software image file resides on a PCMCIA flash card or a TFTP server.
Memory Module
The control module uses memory to hold the routing tables and other tables. The minimum factory
configuration for the control module includes 64MB of memory in an SSR-CM2B-64, 128MB of
memory in an SSR-CM3-128, and 256MB of memory in an SSR-CM4-256. You can obtain
X-Pedition memory upgrade kits from Enterasys Networks to increase memory to 128MB (in a
10/100 Mgmt
Console
RST SYS
OK
ERR DIAG
HBT
Hot
Swap
Online Offline
PCMCIA slot 1
SSR-CM4-256 CONTROL MODULE
PCMCIA slot 0
Insert
This side up
PART NO. 8910478
Software Rev:
MODEL NO. XP-PCMCIA-32AT