155-Mbps Port Adapters

This chapter describes the 155-Mbps port adapter that is supported in the following systems:

Catalyst 8540 MSR
Catalyst 8510 MSR
Catalyst 5500
LightStream 1010

This chapter includes the following sections:

Overview of the 155-Mbps Port Adapter

The 155-Mbps Synchronous Optical Network (SONET) STS3c/SDH STM1 port adapter is used for intercampus or wide-area links. The 155-Mbps port adapter supports SC-type and unshielded twisted-pair (UTP) connectors.

Interface Ports Supported

The ATM switch supports any port adapter combination required. Table 4-1 identifies the maximum number of 155-Mbps interface ports supported in each system.

Table 4-1: Maximum Interface Ports Supported by System Type

System Type Max. No. of 155-Mbps Interface Ports

Catalyst 8540 MSR

64

Catalyst 8510 MSR

32

Catalyst 5500

32

LightStream 1010

32

System Type	Max. No. of 155-Mbps Interface Ports
Catalyst 8540 MSR	64
Catalyst 8510 MSR	32
Catalyst 5500	32
LightStream 1010	32

Figure 4-1 shows a 155-Mbps port adapter that supports UTP connectors.

Figure 4-1: 155-Mbps Port Adapter with UTP-5 Connectors

ATM Connections Supported

The 155-Mbps port adapter has four ports that provide the following ATM connections, as shown in Figure 4-2:

The 155-Mbps single-mode port provides WAN or intercampus ATM connections.
The 155-Mbps multimode port provides intercampus ATM connections.
The 155-Mbps UTP-5 port provides desktop-to-wiring-closet
ATM connections.

Figure 4-2: 155-Mbps Port Adapter ATM Intercampus and WAN Connections

JATE Approval

The 155-Mbps port adapter with one single-mode and three multimode connections meets the Japan Approvals Institute for Telecommunications Equipment (JATE) approval. See Table 4-2 for JATE approval details for the 155-Mbps port adapter.

Table 4-2: JATE Approval for the 155-Mbps Port Adapter

Applicant Name Model No. Approval No. Date of Approval

Nihon Cisco Systems

WAI-OC3-1S3M

D99-0507JP

July 15, 1999

Applicant Name	Model No.	Approval No.	Date of Approval
Nihon Cisco Systems	WAI-OC3-1S3M	D99-0507JP	July 15, 1999

Cabling the 155-Mbps Port Adapter

This section 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.

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 "ATM Connection Equipment Requirements" section.

155-Mbps Port Adapter Connectors

To connect the 155-Mbps port adapter to the external ATM switch, use the following connectors. (See Figure 4-3 for UTP and single- and multimode fiber-optic connections. See Figure 4-4 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.

Figure 4-3: 155-Mbps UTP, Multimode, and Single-Mode Connections and LEDs

Figure 4-4: 155-Mbps Single-Mode Connections and LEDs

Note For a description of these connectors, see the "ATM Connection Equipment Requirements" section. (Figure 2-1 shows an SC-type connector. Figure 2-3 shows an RJ-45 connector.)

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 shown in Figure 4-3 and Figure 4-4 and described in Table 4-3.

Table 4-3: 155-Mbps Port Adapter LED Descriptions

LED State Description

RX (receive)

Off
Flashing green

Red

LOS¹ or shutdown
Cells being received: blinks every five
seconds and pulse rate increases with data rate
Alarm (LOF², OCD³, AIS⁴, LOP⁵)

TX (transmit)

Off

Flashing green

Flashing yellow
Steady yellow

No transmit line activity and administratively down
Cells being transmitted: pulse rate increases
with data rate

Loopback
RDI⁶

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

LED	State	Description
RX (receive)	Off Flashing green Red	LOS¹ or shutdown Cells being received: blinks every five seconds and pulse rate increases with data rate Alarm (LOF², OCD³, AIS⁴, LOP⁵)
TX (transmit)	Off Flashing green Flashing yellow Steady yellow	No transmit line activity and administratively down Cells being transmitted: pulse rate increases with data rate Loopback RDI⁶

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

Table of Contents

155-Mbps Port Adapters