Cabling the 155-Mbps Port Adapter

This chapter describes supported cabling configurations for the 155-Mbps port adapter, which provides single-mode, multimode, mixed (one single-mode and three multimode), and UTP 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, multimode, or UTP port adapter interface with an external ATM network.

155-Mbps Port Adapter Supported Interfaces

The 155-Mbps port adapter provides an interface to ATM switching fabrics for transmitting and receiving data at up to 155 Mbps bidirectionally. The 155-Mbps port adapters can support interfaces that connect to the following physical layers:

SONET 155-Mbps multimode fiber-optic---STS-3C
SONET 155-Mbps single-mode fiber-optic---STS-3C
SONET 155-Mbps UTP-5---STS-3C

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

155-Mbps Port Adapter Connectors

To connect the 155-Mbps port adapter to the external ATM switch, use the following connectors. (See Figure 3-1 for UTP and single- and multimode fiber optic connections. See Figure 3-2 for single-mode fiber optic and long reach connections.)

For multimode, single-mode, and mixed single-mode traffic, use an SC-type connector.
For UTP traffic, use an RJ-45 connector.

Note For a description of these connectors, see the section "ATM Connection Equipment Requirements" in the chapter "Installing ATM Port Adapters." (Figure 2-2 shows an SC-type connector. Figure 2-3 shows and RJ-45 connector.)

Figure 3-1: 155-Mbps UTP, Multimode, and Single-Mode Connections and LEDs

Figure 3-2: 155-Mbps Single-Mode Connections and LEDs

155-Mbps Port Adapter LEDs

The LEDs provide status information for the individual 155-Mbps single-mode, multimode, and UTP interface connections. The LEDs are described in Table 3-1 and shown in Figure 3-1 and Figure 3-2.

Table 3-1: 155-Mbps Port Adapter LED Descriptions
LED Description

RX (receive)

Off---LOS¹ or shutdown
Flashing green---Cells being received: blinks every five seconds and pulse rate increases with data rate
Red---Alarm (LOF², LCD³, AIS⁴)

TX (transmit)

Off---No transmit line activity
Flashing green---Cells being transmitted: pulse rate increases with data rate
Flashing yellow---Loopback
Steady yellow---Alarm FERF⁵

¹LOS = loss of signal.
²LOF = loss of frame.
³LCD = loss of cell delineation.
⁴AIS = alarm indication signal.
⁵FERF = far-end receive failure.

Table 3-1: **155-Mbps Port Adapter LED Descriptions**
LED	Description
RX (receive)	Off---LOS¹ or shutdown Flashing green---Cells being received: blinks every five seconds and pulse rate increases with data rate Red---Alarm (LOF², LCD³, AIS⁴)
TX (transmit)	Off---No transmit line activity Flashing green---Cells being transmitted: pulse rate increases with data rate Flashing yellow---Loopback Steady yellow---Alarm FERF⁵

Note Single-mode fiber-optic interface connectors are blue, while multimode connectors are black.

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