ATM Port Adapter Installation Guide
The 155-Mbps Port Adapter
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The 155-Mbps Port AdapterThe 155-Mbps Port Adapter
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Cabling the 155-Mbps Port Adapter

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.


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