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This chapter describes the 4-port OC-12c interface module that is supported in the
Catalyst 8540 MSR.
This chapter includes the following sections:
The following OC-12c interface modules are described in this chapter:
The Catalyst 8540 MSR supports up to a maximum of eight OC-12c interface modules with a maximum of 32 OC-12c interface ports.
Figure 7-1 shows an OC-12c interface module. The four ports are available in either multimode or single-mode connectors.
The OC-12c interface module has four ports that provide the following ATM connections, as shown in Figure 7-2:
This section describes supported cabling configurations for the OC-12c interface module, which provides multimode and single-mode connections.
The OC-12c interface module can support interfaces that connect to the following physical layers:
To connect the OC-12c multimode or single-mode interface modules to other OC-12c equipment by way of an optical link, use a dual SC-type connector for multimode and single-mode fiber-optic traffic. (See Figure 7-3.)
 | Caution If you are attaching a short cable to the OC-12c intermediate reach port adapter, you must add 10 dB of attenuation in the interface or the transmitter can overdrive the receiver and introduce data errors. |
The LEDs provide status information for the individual OC-12c multimode and single-mode fiber-optic connections. The LEDs are shown in Figure 7-3 and described in Table 7-1.
| LED | State | Description |
|---|---|---|
Off | Carrier detect signal not received | |
Off | Administratively down or LOS1 | |
Off | No transmit line activity and administratively down |
| 1LOS = loss of signal 2LOF = loss of frame 3OCD = out of cell delineation 4AIS = alarm indication signal 5LOP = loss of pointer 6RDI = remote defect indicator |
Posted: Fri Nov 5 09:29:59 PST 1999
Copyright 1989-1999©Cisco Systems Inc.