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Chapter 1
Overview
Utilities Subsystem
33
-The ability to process and store log entries (chassis codes)
- Console functions to every partition
- OL* functions
- Virtual front panel and system alert notification
- The ability to connect to the MP for maintenance, either locally or remotely
- The ability to run diagnostics (ODE and scan)
Figure 1-3 Management Processor
The SBCH provides the physical and electrical interface to the SBC, the fanning out of the universal serial
bus (USB) to internal and external subsystems, and a LAN 10/100BT ethernet connection. It plugs into the
HUCB and is hot swappable. Every CPU cabinet contains one SBCH board, but only one SBCH contains an
SBC board used as the MP for the complex. The remaining SBCH boards act as USB hubs.
The SBC board is an embedded pc running system utility board (SUB) firmware. It is the core of the MP. It
plugs into the SBCH board through a PC104 interface. The SBC provides three external interfaces to the
utility subsystem:
- LAN (10/100BT ethernet) for customer console access
- RS232 port, for remote access from the response center through a modem
- RS232 port, for local console access for manufacturing and field support personnel
The modem function is not included on the SBC and must be external to the cabinet.
Compact Flash
The compact flash is a PCMCIA-style memory card that plugs into the SBC board. It stores the MPMP
firmware and the customer's MP configuration parameters. The parameters stored in the compact flash are:
- The network configurations for both the public and private LANs
- User name and password combinations for logging in to the MP
- Baud rates for the serial ports
- Paging parameters for a specified alert level
SBC
SBCH
UGUY