System Components
System Description 1-3
Controller Card Functions and Components
The controller card aspect of the circuit board manages the system; it is responsible for the packet routing
protocols, the SmartEdge OS command-line interface (CLI), and communications with a network
management system running the NetOp™ Element Manager System (EMS) software. The controller also
loads all configuration information necessary for the I/O carrier card and its ports.
Table 1-1 compares the controller card aspect of the SmartEdge 100 circuit board with the Cross-Connect
Route Processor Version 3 (XCRP3) Controller card in a SmartEdge 400 or SmartEdge 800 chassis.
The circuit board has these functions and components:
• Dual processors that share memory and perform the controller functions
• Memory—1 GB of synchronous dynamic RAM (SDRAM), which runs the SmartEdge OS and
provides for shared databases that are accessed by the I/O carrier card and its MICs.
• Nonvolatile RAM (NVRAM) with battery
The circuit board includes 512 KB of NVRAM, which stores the current state of the system; because it
is not affected by power failures or system shutdown, the system can restore operations when power is
restored or the system is restarted.
Table 1-1 Circuit Board and XCRP3 Controller Card Comparison
Feature Circuit Board XCRP3
Main memory (total) 1 GB 768 MB or 1 GB
NVRAM Yes Yes
Real-time clock Yes Yes
External timing implementation None Software selectable
System image and file storage
• Internal-storage device
• External-storage device
512 MB
1 GB
512 MB
1 GB
Ethernet management port 10/100/1000 10/100
Local console Direct or terminal server
connection only
Direct, terminal server, or
modem connection
Note A second internal-storage device is also installed on the circuit board and the XCRP3 Controller
card for low-level software.
Note The capacity of the internal and external compact-flash (CF) cards can vary on the circuit board and
XCRP3, but the CF cards need not have the same capacity.
Note Support for NVRAM is dependent on the release of the SmartEdge OS.
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