Cabling the 622-Mbps Port Adapter

This chapter describes supported cabling configurations for the 622-Mbps port adapter, which provides single-mode, multimode, and single-mode long reach connections. This chapter is organized into the following sections:

For detailed, up-to-date configuration instructions, see the following publications:

Catalyst 8540 MSR Software Configuration Guide
LightStream 1010 ATM Switch and Catalyst 8510 MSR Software Configuration Guide
Catalyst 5000 Series Software Configuration Guide

For command-line interface (CLI) command descriptions, see the following publications:

Catalyst 8540 MSR Command Reference
LightStream 1010 ATM Switch and Catalyst 8510 MSR Command Reference
Catalyst 5000 Series Command Reference

Note All ATM interfaces are full duplex. You must use the appropriate ATM interface cable to connect the ATM single-mode or multimode interface with an external ATM network.

622-Mbps Port Adapter Supported Interfaces

The 622-Mbps port adapter can support interfaces that connect to the following physical layers:

SONET 622-Mbps multimode fiber-optic---STS-12C/STM 4
SONET 622-Mbps single-mode fiber-optic---STS-12C/STM 4

Note For descriptions of ATM cabling requirements, refer to the section "ATM Connection Equipment Requirements" in the chapter "Installing ATM Port Adapters."

622-Mbps Port Adapter Connectors

To connect the 622-Mbps multimode or single-mode port adapters to the external ATM switch, use an SC-type connector for multimode, single-mode, or single-mode long reach fiber-optic traffic. (See Figure 4-1.)

Note For a description of an SC-type connector, see the section "ATM Connection Equipment Requirements" in the chapter "Installing ATM Port Adapters."
(See Figure 2-2.)

Figure 4-1: 622-Mbps Fiber-Optic Connections and LEDs

Caution
If you are attaching a short cable to the OC12, 622-Mbps long reach port adapter, you must add 10 decibels per milliwatt (dBm) of attenuation in the line or the transmitter can overdrive the receiver and introduce data errors.

622-Mbps Port Adapter LEDs

The LEDs provide status information for the individual 622-Mbps single-mode and multimode fiber-optic connections. The LEDs are described in Table 4-1 and shown in Figure 4-1.

Table 4-1: 622-Mbps Port Adapter LED Descriptions
LED Description

CD (carrier detect)

Off---Carrier detect signal not received
Green---Carrier detect signal received

RX (receive)

Off---Administration down
Flashing green---Cells being received: pulse rate increases with data rate
Red---Alarm (LOF¹, LCD², AIS³)

TX (transmit)

Off---No transmit line activity
Flashing green---Cells being transmitted: pulse rate increases with data rate
Flashing yellow---Loopback
Steady yellow---Alarm FERF⁴

¹LOF = loss of frame.
²LCD = loss of cell delineation.
³AIS = alarm indication signal.
⁴FERF = far-end receive failure.

LED	Description
CD (carrier detect)	Off---Carrier detect signal not received Green---Carrier detect signal received
RX (receive)	Off---Administration down Flashing green---Cells being received: pulse rate increases with data rate Red---Alarm (LOF¹, LCD², AIS³)
TX (transmit)	Off---No transmit line activity Flashing green---Cells being transmitted: pulse rate increases with data rate Flashing yellow---Loopback Steady yellow---Alarm FERF⁴

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