User's Manual

CHAPTER
1-1
Cisco 3200 Series Mobile Access Router Hardware Guide
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Mobile Access Router Card (MARC)
The Mobile Access Router Card (MARC) is one component of the Cisco 3200 Series Mobile Access
Router. It includes the host processor, memory, and headers for the 10/100 Fast Ethernet, console, and
auxiliary signals for the router. Additional components provide power and link interfaces to the MARC.
For example, the 4-port Serial Mobile Interface Card provides up to 4 smart serial interfaces. The exact
configuration of your router will vary, depending on how it was configured by your vendor.
Note This section provides basic information regarding the MARC hardware for the purpose of performing
simple troubleshooting, such as reconnecting a loose cable. To solve more difficult problems, please
contact your vendor.
The key features of the MARC include the following:
• MPC8250 processor running 210-MHz at the CPU core, 150-MHz at the CPM core, and 60-MHz
on the Motorola 60x bus
• 32 MB of Flash memory
• 128 MB synchronous DRAM
• 10/100 Fast Ethernet, full-duplex connection with auto negotiation
• Console connection with hardware/software flow control
• Asynchronous, RS-232 serial connection with a 5 V auxiliary power supply for Global Positioning
System (GPS) and auxiliary (AUX) devices
• A 32-bit PCI bus, version 2.1 running at 25-MHz
• Supports zeroization when this featured is configured on the router.
Caution Zeroization is a feature that erases all potentially sensitive information from the router. Zeroization is
configured through the CLI and activated through an actuator that must be attached to the AUX port,
such as a push button. Zeroization is disabled by default on the Cisco 3200 Series router.
When Zeroization is not configured on the router, the AUX port functions as a modem port or a terminal
port. When declassification is enabled through the CLI, we recommend that you do not use the AUX port
for any other function than declassification. This is because there is no way for the router to reliably
determine if a device attached to the AUX port is an actuator; therefore, any device attached to the AUX
port could potentially trigger declassification.