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Cisco MDS 9200 Series Hardware Installation Guide
OL-17468-02
Chapter 1 Product Overview
Services Modules
The Fibre Channel port interfaces support hot-swappable Fibre Channel SFP transceivers, which can be
SWL for connectivity up to 1640 feet (500 meters), or LWL for connectivity up to 6.2 miles (10 km).
All interfaces are autosensing 1-Gbps or 2-Gbps compatible. The port interfaces also support CWDM
SFP transceivers, which can be used for extended long wavelength (ELWL) transmission or for CWDM.
See the “Supported Transceivers” section on page 1-36.
Figure 1-21 shows the Cisco MDS 9000 Family Fibre Channel ASM.
Figure 1-21 Cisco MDS 9000 Family ASM
Each module draws power from the 42 V supplied on the backplane with local DC/DC power converters
and regulators.
The control processor on the module provides power-on, offline, and online diagnostics. The control
processor can be used to configure devices on the switching module and to gather statistical data from
each port.
The control processor monitors the DC/DC power source and temperature. The control processor signals
the supervisor module and displays an alarm on its front panel when a problem is detected.
The front panel on the services module provides basic status information, such as power-on, self-test
running, self-test passed, alarm, and ready.
The binary image for the services module is downloaded from the supervisor module. Prior to the image
download, the control processor on the switching module runs from code stored on its local
CompactFlash card. The image for an ASM-SFN can be specified using the ASM-SFN boot variable.
For more information on how to specify the SSI boot variable, see the Cisco MDS 9000 Family CLI
Configuration Guide.
Note Software downloads are only necessary when a revision of the code is needed.
The supervisor module can force a reset on the services module and controls whether power is applied
to the switching module.
If a single component or a set of components on the switching module fails, this failure does not disable
another switching module if that is the only failure in the system.
Each ASM has a hardware watchdog timer to detect most component failures. The watchdog timer resets
the card if it is not serviced periodically.
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DS-X9032
1 Status LED 3 Link and Speed LEDs
2 1-Gbps/2-Gbps Fibre Channel port group 4 Asset tag