Cisco Systems MDS 9200 Series manual 1-30, 21 Cisco MDS 9000 Family ASM

Chapter 1 Product Overview

Services Modules

Se n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a ck - d o c @ c i s c o . c o m

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 1-21shows the Cisco MDS 9000 Family Fibre Channel ASM.

Figure 1-21 Cisco MDS 9000 Family ASM

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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.

	Cisco MDS 9200 Series Hardware Installation Guide
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