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Catalyst 5000 series switches support both Copper Distributed Data Interface (CDDI) and Fiber Distributed Data Interface (FDDI) switching modules. This chapter describes the CDDI and FDDI modules, and is divided into the following sections:
 | Warning Only trained and qualified personnel should install or replace this equipment. |
For specifications on all CDDI and FDDI switching modules, see Appendix A, "Specifications."
For information on configuring CDDI and FDDI modules, see the Catalyst 5000 Series Software Configuration Guide.
CDDI transmits over relatively short distances of approximately 328 feet (100 meters), providing data rates of 100 Mbps, using a dual-ring architecture to provide redundancy. FDDI is a LAN standard, defined by American National Standards Institute (ANSI) X3T9.5, specifying a 100-Mbps, token-passing network using fiber-optic cable, with transmission distances of up to 1.2 miles (2 kilometers). FDDI also uses a dual-ring architecture to provide redundancy.
This section describes the CDDI module and defines its status LEDs.
The CDDI module, shown in Figure 5-1, provides a single-attachment-station (SAS) or dual-attachment-station (DAS) connection to two Category 5 unshielded twisted-pair (UTP), 100-Mbps CDDI interfaces using two RJ-45 connectors.
The CDDI module requires supervisor engine module software release 1.3 or greater.
The LEDs on the CDDI module provide status information for the module and for the individual CDDI port connections. The LEDs are shown in Figure 5-2 and are described in Table 5-1.
| LED | Description |
|---|---|
| STATUS | The switch performs a series of self-tests and diagnostic tests. If all the tests pass, the LED is green. If a test other than an individual port test fails, the LED is red. During system boot or if the module is disabled, the LED is orange. During self-test diagnostics, the LED is orange. If the module is disabled, the LED is orange. |
| RING OP | Indicates whether or not the ring is operational. If the ring is operational, the LED is green. If the ring is not operational, the LED is off. |
| THRU | If ports A and B of the CDDI/FDDI module are connected to the primary and secondary rings, the LED is green; otherwise, it is off. |
| WRAP A | If port A is connected to the ring and port B is isolated, the LED is green; otherwise, it is off. |
| WRAP B | If port B is connected to the ring and port A is isolated, the LED is green; otherwise, it is off. |
| Port A status | If port A is connected to the ring, the LED is green. If port A receives a signal but fails to connect, or a dual homing condition exists, the LED is orange. The LED is turned off if no receive signal is detected. |
| Port B status | If port B is connected to the ring, the LED is green. If port B receives a signal but fails to connect, or a dual homing condition exists, the LED is orange. The LED is turned off if no receive signal is detected. |
This section describes the FDDI Module Multimode Fiber (MMF) and defines its status LEDs.
The FDDI Module MMF, shown in Figure 5-3, provides an SAS or DAS connection to the FDDI backbone network using two multimode, media interface connector (MIC) fiber-optic connections.
The FDDI Module MMF requires supervisor engine module software release 1.3 or greater.
The LEDs on the FDDI Module MMF provide status information for the module and for the individual FDDI port connections. The LEDs are shown in Figure 5-4 and described in Table 5-2.
| LED | Description |
|---|---|
| STATUS | The switch performs a series of self-tests and diagnostic tests. If all the tests pass, the LED is green. If a test other than an individual port test fails, the LED is red. During system boot or if the module is disabled, the LED is orange. During self-test diagnostics, the LED is orange. If the module is disabled, the LED is orange. |
| RING OP | Indicates whether or not the ring is operational. If the ring is operational, the LED is green. If the ring is not operational, the LED is off. |
| THRU | If ports A and B of the CDDI/FDDI module are connected to the primary and secondary rings, the LED is green; otherwise, it is off. |
| WRAP A | If port A is connected to the ring and port B is isolated, the LED is green; otherwise, it is off. |
| WRAP B | If port B is connected to the ring and port A is isolated, the LED is green; otherwise, it is off. |
| Port A status | If port A is connected to the ring, the LED is green. If port A receives a signal but fails to connect, or a dual homing condition exists, the LED is orange. The LED is turned off if no receive signal is detected. |
| Port B status | If port B is connected to the ring, the LED is green. If port B receives a signal but fails to connect, or a dual homing condition exists, the LED is orange. The LED is turned off if no receive signal is detected. |
| IN | The optical bypass switch LED indicates the status of the device connected to the line module. When the LED is on, the bypass switch is activated and is in Thru mode (the line module is attached to the dual ring). |
The six-pin, mini-DIN connector, labeled BYPASS in Figure 5-4, connects an external optical bypass switch to the FDDI Module MMF. When the bypass switch is activated, the FDDI Module MMF is inserted into the ring. The optical bypass switch LED, labeled IN in Figure 5-4, indicates the status of the device connected to the module. When the bypass switch is activated and is in Thru mode (the module is attached to the dual ring), the bypass switch LED is on. For more information on the optical bypass switch, see Chapter 2, "Preparing for Installation."
This section describes the FDDI Module Single-Mode Fiber (SMF) and defines its status LEDs.
The FDDI Module SMF, shown in Figure 5-5, provides an SAS or DAS connection to the 100-Mbps FDDI backbone network using two single-mode, straight-tip (ST) fiber-optic connectors (for an SAS) or four single-mode, ST fiber-optic connectors (for a DAS).
| Warning Invisible laser radiation may be emitted from the aperture ports of the single-mode fiber-optic modules when no cable is connected. Avoid exposure and do not stare into open apertures. |
The FDDI Module SMF requires supervisor engine module software release 1.3 or greater.
The LEDs on the FDDI Module SMF provide status information for the module and for the individual FDDI port connections. The LEDs are shown in Figure 5-6 and in Table 5-3.
| LED | Description |
|---|---|
| STATUS | The switch performs a series of self-tests and diagnostic tests. If all the tests pass, the LED is green. If a test other than an individual port test fails, the LED is red. During system boot or if the module is disabled, the LED is orange. During self-test diagnostics, the LED is orange. If the module is disabled, the LED is orange. |
| RING OP | Indicates whether or not the ring is operational. If the ring is operational, the LED is green. If the ring is not operational, the LED is off. |
| THRU | If ports A and B of the CDDI/FDDI module are connected to the primary and secondary rings, the LED is green; otherwise, it is off. |
| WRAP A | If port A is connected to the ring and port B is isolated, the LED is green; otherwise, it is off. |
| WRAP B | If port B is connected to the ring and port A is isolated, the LED is green; otherwise, it is off. |
| Port A status | If port A is connected to the ring, the LED is green. If port A receives a signal but fails to connect, or a dual homing condition exists, the LED is orange. The LED is turned off if no receive signal is detected. |
| Port B status | If port B is connected to the ring, the LED is green. If port B receives a signal but fails to connect, or a dual homing condition exists, the LED is orange. The LED is turned off if no receive signal is detected. |
| IN | The optical bypass switch LED indicates the status of the device connected to the line module. When the LED is on, the bypass switch is activated and is in Thru mode (the line module is attached to the dual ring). |
The six-pin, mini-DIN connector, labeled BYPASS in Figure 5-6, connects an external optical bypass switch to the FDDI Module SMF. When the bypass switch is activated, the FDDI Module SMF is inserted into the ring. The optical bypass switch LED, labeled IN in Figure 5-6, indicates the status of the device connected to the module. When the bypass switch is activated and is in Thru mode (the module is attached to the dual ring), the bypass switch LED is on. For more information on the optical bypass switch, see Chapter 2, "Preparing for Installation."
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