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This chapter describes cabling and configuration procedures for the LightStream 1010 ATM switch 155 Mbps PAMs. When your switch leaves the factory, it is configured as specified in your order and is ready for installation and startup. As your communication requirements change, you might want to upgrade your system, add components, or change the initial configuration.
The following 155 Mbps PAMs are described in this chapter:
Software and upgrades require specific document part numbers and other frequently updated information; therefore, only basic software configuration guidelines are included in this publication. Detailed, up-to-date instructions are included in the LightStream 1010 ATM Switch Software Configuration Guide and CLI command descriptions are provided in the LightStream 1010 ATM Switch Command Reference.
This chapter contains the following information:
The 155-Mbps SONET STS3c/SDH STM1 Port Adapter Module is ideal for intercampus or wide-area links (see Figure 4-1). The four ports on the PAM can be configured as redundant links using the switch routing protocols. The PAM supports SC-type and UTP connectors. Receive and transmit LEDs on each port give quick, visual indications of port status and operation. For detailed network management support, comprehensive statistics gathering and alarm monitoring capabilities are provided, building on the sophisticated manageability mechanisms of SONET/SDH
Each of the ports on the PAM can be configured to support the following clocking options:
Traffic-pacing allows the aggregate output traffic rate on any port to be set to a rate below the line rate. This is useful when communicating with a slow receiver or when connected to public networks with peak-rate tariffs.
The plug-and-play mechanisms of the LightStream 1010 allow the switch to come up automatically. All configuration information for port adapter modules can be saved between hot swaps and switch reboots, while interface types are automatically discovered by the switch. This eliminates mandatory manual configuration.
The LightStream 1010 supports any combination of port adapter modules. Customers can configure their switches with only the number and type of interfaces required, with up to 32 155-Mbps interface ports.
This section describes the following:
The 155 PAMs provide the following features:
The 155-Mbps SONET STS3c/SDH STM1 PAM has four ports and is ideal for intercampus or wide-area links. Figure 4-2 is an example of the 155 PAM applications.
The various 155 PAMs provide the following ATM connections:
This section describes the 155 PAM connectors and LEDs.
All ATM interfaces are full duplex. You must use the appropriate ATM interface cable to connect the ATM SM, MM, or UTP PAM interface with an external ATM network.
This section describes the following:
For fiber-optic traffic over SM or MM, use the SC-type connector to connect the 155 MM PAM, 155 SM PAM, or mixed SM and MM PAM to the external ATM switch. See the section "Preparing Network Connections" in the chapter "Preparing for Installation" for a description of an SC-type connector.
For UTP traffic, use the RJ-45 connector (Figure 4-3) to connect the 155 UTP PAM to the external ATM switch. See the section "Preparing Network Connections" in the chapter "Preparing for Installation" for a description of an RJ-45 connector.
The 155 PAMs provide an interface to ATM switching fabrics for transmitting and receiving data at up to 155 Mbps bidirectionally. The PAM LEDs provide status information for the port adapter module's individual interface connections.
The ATM PAM can support interfaces that connect to the following physical layers:
Connect the ATM interface cables as shown in Figure 4-3. For detailed descriptions of ATM cabling requirements, refer to the sections "Preparing Network Connections" and "ATM Connection Equipment" in the chapter "Preparing for Installation."
The PAM faceplate LEDs provide status information for the port adapter module's individual 155 SM and MM fiber-optic and UTP interface connections. The LEDs are described in Table 4-1 and shown in Figure 4-3 and Figure 4-4.
| 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 |
When the switch is powered without any previous configuration data, the ATM interfaces are automatically configured on the physical ports. ILMI and the physical card type are used to automatically derive the ATM interface type, UNI version, maximum virtual path identifier (VPI) and virtual channel identifier (VCI) bits, ATM interface side, and ATM UNI type.
When you hot-swap a CM or PAM, the configuration for the initially installed PAM interface configuration is saved. If the same type of PAM is reinstalled, no additional configuration is needed and the initial configuration is reestablished. See the section "What is Hot Swapping?" in the chapter "Installing the LightStream 1010 ATM Switch PAMs" for detailed information.
The interface configuration is described in the section "Default ATM Interface Configuration Without Autoconfiguration."
If ILMI is disabled or if the connecting end node is not supporting ILMI, the following defaults are assigned to all 155 Mbps interfaces:
This concludes the explanation of the 155 port adapter module cabling and configuration.
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