The CE1 Frame Relay Port Adapter

This chapter describes the channelized E1(CE1) Frame Relay 2.048-Mbps ATM 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 CE1 Port Adapter

The channelized E1 (CE1) Frame Relay port adapter operates at 2.048 Mbps and is subdivided into 30 B channels and 1 D channel. The CE1 Frame Relay port adapter supports Frame Relay and is used for intercampus or wide-area links. The CE1 Frame Relay port adapter supports UTP and RJ-45 connectors.

Interface Ports Supported

The ATM switch supports any port adapter combination required. Table 9-1 identifies the maximum number of CE1 Frame Relay interface ports supported in each system.

Table 9-1: Maximum Interface Ports Supported by System Type
System Type Maximum Number of CE1 Frame Relay
Interface Ports

Catalyst 8540 MSR

64

Catalyst 8510 MSR

32

Catalyst 5500

32

LightStream 1010

32

Table 9-1: **Maximum Interface Ports Supported by System Type**
System Type	Maximum Number of CE1 Frame Relay Interface Ports
Catalyst 8540 MSR	64
Catalyst 8510 MSR	32
Catalyst 5500	32
LightStream 1010	32

Note The Catalyst 8540 MSR does not support the CE1 Frame Relay port adapter.

Figure 9-1 shows a CE1 Frame Relay port adapter with UTP connectors.

Figure 9-1: CE1 Frame Relay Port Adapter with UTP Connectors

ATM Connections Supported

The CE1 Frame Relay port adapter provides ATM connectivity to the WAN through T1 or E1 trunk lines, as shown in Figure 9-2.

Figure 9-2: CE1 Frame Relay Port Adapter ATM WAN Connections

Cabling the CE1 Port Adapter

This section describes supported cabling configurations for the channelized E1 (CE1) Frame Relay 2.048-Mbps ATM port adapter.

Note All ATM interfaces are full duplex. You must use the appropriate ATM interface cable to connect the ATM BNC or UTP port adapter interface with an external ATM network.

CE1 Frame Relay Port Adapter Supported Interfaces

The CE1 Frame Relay port adapter provides an interface to ATM switching fabrics for transmitting and receiving data at 2.048 Mbps bidirectionally. The actual data rate is determined by the physical layer interface module (PLIM). The CE1 Frame Relay port adapter can support interfaces that connect to the CE1 2.048-Mbps UTP cable with an RJ-48c connector.

Caution
The CE1 Frame Relay ports must be connected to a network termination unit (NTU). NTU devices should comply with UL 1950, CSA 950, EN 60950, and IEC 950 standards.

Note For detailed descriptions of ATM cabling requirements, see the "ATM Connection Equipment Requirements" section.

CE1 Frame Relay Port Adapter Connectors

For the CE1 trunks, use an RJ-48c connector and UTP cable to connect the CE1 Frame Relay port adapter with the WAN or other switches. (See Figure 9-3.)

Note See the "ATM Connection Equipment Requirements" section for a description of these connectors. (Figure 2-3 shows an RJ-48c connector.)

Figure 9-3: CE1 Frame Relay Connections and LEDs

CE1 Frame Relay Port Adapter LEDs

The LEDs provide status information for the individual CE1 Frame Relay interface connections. The LEDs are described in Table 9-2 and shown in Figure 9-3.

Table 9-2: CE1 Frame Relay Port Adapter LED Descriptions
LED Description

CD (carrier detect)

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

RX (receive)

Off---No receive line activity
Flashing green---Cells being received: blinks every five seconds and pulse rate increases with data rate
Flashing yellow---Loopback
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---No receive line activity Flashing green---Cells being received: blinks every five seconds and pulse rate increases with data rate Flashing yellow---Loopback 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

Table of Contents

The CE1 Frame Relay Port Adapter