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Chassis Management Module (CMM)
page -26 OmniSwitch Troubleshooting Guide September 2005
Framing Error
The Framing Error event represents an event where the Roma ASIC detects an error in a packet header on
ingress. Since this will potentially corrupt the buffer system, a free list rebuild is required when this is
detected.
Chassis Management Module (CMM)
Chassis Management Module (CMM) controls the major functionality and synchronization between two
different components in the distributed architecture. The main responsibilities of the CMM for both
OS7XXX and OS8800 are the same:
• Booting up all the modules in the chassis.
• Downloading the customer specific configurations on the NI.
• Synchronization of the fabric modules
• Power distribution
• Switch diagnostics
• Important availability features, including redundancy (when used in conjunction with another CMM),
software rollback, temperature management, and power management.
• Providing access to the switch through Command Line Interface (CLI), Web management and SNMP
• Provides an out of band Ethernet Management Port (EMP)
ROMA 0
ROMA 1
ROMA 7
ROMA 8
ROMA 9
Coronado
Coronado
Coronado
Coronado
Up to 64
Coronado
ASICs can
Be connected to
ROMA
.
.
.
.
Total of 8
ROMAs are
active at a
time
OS-8800 Switching Fabric