Cisco AJ732A - MDS 9134 Fabric Switch Installation Manual page 45

Chapter 1 Product Overview
The Fibre Channel ports support hot-swappable Fibre Channel SFP transceivers, which can be short
wavelength (SWL) for connectivity up to 1050 feet (500 m), or long wavelength (LWL) for connectivity
up to 6.2 miles (10 km). All interfaces are autosensing 1-Gbps or 2-Gbps compatible. The ports also
support coarse wavelength-division multiplexing (CWDM) SFP transceivers, which can be used for
extended long wavelength (EWL) transmission or for CWDM. For more information about SFP
transceivers, see the
Figure 1-19
Figure 1-19
DS-X9032
Storage Services Module
1
1
Status LED
2
1-Gbps/2-Gbps Fibre Channel port group
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 it detects a problem.
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 services module runs from the code stored on its local
CompactFlash card. The image for an SSM can be specified using the SSI boot variable. For more
information on how to specify the SSI boot variable, see the
Guide.
Software downloads are only necessary when a revision of the code is needed.
Note
The supervisor module can force a reset on the services module and controls whether or not 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.
For the detection of most component failures, each switching module has a hardware watchdog timer
that resets the card if it is not serviced periodically.
OL-16188-01
"Supported Transceivers" section on page
shows the SSM, which has the part number DS-X9032-SSM on the left side.
Cisco MDS 9000 Family SSM
2
4 5
17 20
21
3
8 9 12 13
25 28 29
24
3
Link and speed LEDs
4
Asset tag
Cisco MDS 9000 Family CLI Configuration
Cisco MDS 9200 Series Hardware Installation Guide
Services Modules
1-35.
16
32
4
1-27