Specifications

Table Of Contents
1-4
Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter1 Introduction
Cisco AS5800 Hardware Review
Note A virtual console can be opened from the RS to any feature card (including the DSC).
System Architecture
The Cisco AS5800 system architecture consists of backplane bus connections that provide
communications between the dial shelf and the host router shelf, monitor system environment
conditions, and transmit clock/frame pulses to feature/DS controller cards.
For detailed Cisco 7206 router-shelf functionality and hardware specifications refer to the following
documents:
Cisco 7200 VXR Installation and Configuration Guide, available online at
http://www.cisco.com/univercd/cc/td/doc/product/core/7200vx/72vxicg/
Cisco AS5800 Access Server Hardware Installation Guide, available online at
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/as5800/hw_inst/
ROM Monitor
This section describes the Cisco AS5800 ROM monitors on the Cisco 7206 router shelf and the
Cisco 5814 dial shelf. ROM monitor is the first software to run when the Cisco AS5800 is powered-up
or reset.
The router-shelf ROM monitor operates like a regular Cisco 7206 router ROM monitor. For more
information on basic router usage, refer to the Cisco 7206 Installation and Configuration Guide,
available online at
http://www.cisco.com/univercd/cc/td/doc/product/core/7206/7206ig/.
The dial-shelf ROM monitor is located on dial-shelf controller cards installed in dial-shelf chassis slots
12 and 13. The dial-shelf ROM monitor is configured to autoboot during system power-up or reset. It
always attempts to boot from the first image on Flash memory devices in the following sequence:
PCMCIA slot 0
PCMCIA slot 1
Boot Flash memory
Note During a normal system boot, PCMCIA slots 0 and 1 should remain empty to allow the
default image on the boot Flash memory to boot the system.
To boot the system from an image other than the default image, copy the image used to boot as the first
file on a PCMCIA Flash memory card and insert the Flash memory card into PCMCIA slot 0 or 1. Reload
the dial-shelf controller, which will cause the system to override the default image and reboot the system
from the PCMCIA Flash memory card.