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This chapter explains how to install and configure the Catalyst 1600 Token Ring switch, and how to connect the Catalyst 1600 to wiring concentrators, lobe stations, and other Catalyst 1600 Token Ring switch devices.
Before you install the Catalyst 1600, make sure you are familiar with the concepts of Token Ring switching (see Appendix B, "About Token Ring Switching") and controlling broadcast frames with virtual LANs. For information about virtual LANs, refer to the TrueView Catalyst 1600 Manager User Guide.
 | Warning The Catalyst 1600 does not contain any user-serviceable components. Do not open the unit except when installing an option card according to proper instructions. |
| Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
Installation comprises the following steps:
For information about optimizing the performance of the Catalyst 1600 Token Ring switch, monitoring traffic levels and setting up broadcast control strategies, refer to the TrueView Catalyst 1600 Manager User Guide.
Before installing the Catalyst 1600 Token Ring switch, ensure that you are familiar with the safety procedures.
| Warning The device is designed to work with TN power systems. To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
Step 1 Either:
Secure the Catalyst 1600 in a standard 19-inch wide rack.
| Warning To prevent overheating the switch, do not operate it in an area that exceeds the maximum recommended ambient temperature of 104°F (40°C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
Or:
Affix the self-adhesive rubber feet to the underside of the unit, and place the Catalyst 1600 on a flat, horizontal surface. If you install the unit on a shelf, ensure that the shelf can support the 22lb (10kg) weight of the unit.
Step 2 Connect the power cable to the mains power socket on the rear of the Catalyst 1600, then plug the cable into the AC outlet. The input voltage is auto-ranging; you do not need to set a voltage-selector switch.
| Warning See the installation instructions before you connect the system to its power source. To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
| Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
| Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
The Catalyst 1600 automatically runs a self-test routine to ensure that it is operating correctly (see the section "Starting the Self-test Program").
Step 3 The default port settings are:
Port interface: Node mode
Ring number: 401 (port 1) through 408 (port 8) or 40C (port 12)
For information about configuring Token Ring switch port settings according to the device you want to connect, refer to the section "Configuring the Token Ring Switch Ports".
Each Token Ring port on the Catalyst 1600 can act in node or concentrator port interface mode. The port interface mode affects whether the Token Ring port behaves like a Token Ring adapter or a lobe attachment unit port, and determines whether the port generates or detects the phantom drive signal.
| Interface Mode | Description |
|---|---|
| Node | The port behaves like an adapter card and generates a phantom drive signal to insert into the connected device. |
| Concentrator | The port behaves like a Lobe Attachment Module (LAM) port and detects the phantom drive signal that is generated when the connected device attempts to insert. |
By default each Token Ring port is configured for node interface mode, to behave like an adapter card, with a ring speed of 16 Mbps.
To configure alternative port settings:
To connect a device to the Catalyst 1600 Token Ring switch, ensure that you use the correct connector and configure the interface mode of the Token Ring switch port appropriately (see Table 2-2).
| Attached Device | Connector on Device | Port Interface Mode |
|---|---|---|
| UTP or STP LAM | Lobe connector | Node |
| UTP or STP MAU or other wiring concentrator | Lobe connector | Node |
| Workstation/server | Adapter card | Concentrator |
To identify the connector that you use to attach a device to the Catalyst 1600 Token Ring switch, see the sections "Connecting Token Ring Switch Ports in Node Mode" and "Connecting Token Ring Switch Ports in Concentrator Mode" later in this chapter.
Token Ring networks are resilient to the temporary disruption of network signals that occur when nodes insert into and deinsert from the network. Therefore, you do not need to switch off the Catalyst 1600 when connecting and disconnecting cables.
Each Token Ring switch port on the Catalyst 1600 has both UTP (RJ-45) and STP (DB-9) connectors. You do not need to configure the Token Ring switch ports to accept UTP or STP media.
 | Caution Attaching devices to the UTP and STP connectors of a Token Ring switch port at the same time may result in damage to the Catalyst 1600 Token Ring switch. |
In addition, always make sure that the following conditions are met:
The default port interface mode of each Token Ring switch port on the Catalyst 1600 is node mode. In node mode, a port behaves like a Token Ring adapter and generates a phantom drive signal to insert into the device that is connected.
| Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. To see translated versions of this warning, refer to Appendix E, "Translated Safety Warnings." |
| Caution Connecting a port in node mode to another device that generates the phantom drive signal causes the port to close, and may result in unpredictable network behavior. |
You can connect ports in node mode to the following devices, as shown in Figure 2-1:
When you connect a LAM to the Catalyst 1600:
In concentrator mode, a port behaves like a MAU or LAM port and detects the phantom drive signal that is generated when the connected device attempts to insert.
| Caution Connecting a port in concentrator mode to another device that detects the phantom drive signal results in a single-station error. |
You can connect a port in concentrator mode directly to the UTP or STP connector on a Token Ring adapter card in a workstation or server, as shown in Figure 2-2.
You can connect Catalyst 1600 devices by their Token Ring ports, with one in concentrator interface mode and one in node interface mode, as shown in Figure 2-3.
When you connect two Catalyst 1600 devices by their Token Ring ports, make sure the ring number is identical for both Token Ring ports.
To set the ring number:
Step 1 Connect the device to the network and use Catalyst 1600 Manager to configure the Catalyst 1600 from the management station. For more information, refer to TrueView Catalyst 1600 Manager User Guide.
Step 2 Connect a terminal to the serial interface and use the set port segment command (see Chapter 4 "Serial Management").
When you start up or reset the Catalyst 1600, the self-test program automatically checks that the Catalyst 1600 is operating correctly.
At the start of the self-test, some low-level hardware functions are tested. If the Catalyst 1600 fails the low-level test, the startup process is halted. Otherwise the Catalyst 1600 enters the high-level self-test.
During the higher level self-test, the LCD panel displays the messages listed in Table 2-3.
| Startup stage | Description |
|---|---|
Catalyst 1600 Token Ring Switch1.00 10-03-95 10:34
| Displays the version number of the boot software, and the date and time that the software was released. |
System Self Test
| Displays the number of each stage in the self-test. Normally the tests are carried out too quickly for the numbers to be visible. |
System Self Test PASSED
| Indicates that the self-test is complete and the Catalyst 1600 has passed the test. If the Catalyst 1600 fails a high-level test, the self-test program restarts, and the number of the failed test is displayed.
High-level tests are repeated until the self-test is completed successfully. |
If a hardware error occurs, contact your customer service representative quoting the test number and the version number of the software containing the self-test program.
The maximum cable lengths and number of nodes that you can use with the Catalyst 1600 Token Ring switch are determined by the type of device that you connect to each port and the interface mode that you configure for each port.
| Interface Mode | Description |
|---|---|
| Node | Port behaves like an adapter card. For information about maximum cable lengths, refer to the documentation supplied with the device that is attached to the port. |
| Concentrator | Port behaves like a LAM port. For information about maximum cable lengths for UTP and STP cabling, see Table 2-5. |
The port interface mode also determines the pin connections when you attach a device to the UTP (RJ-45) or STP (DB-9) connector of a Token Ring switch port.
Table 2-5 shows the maximum cabling distances for UTP and STP cabling media at ring speeds of 4 or 16 Mbps.
| Cable Type | 4 Mbps | 16 Mbps |
|---|---|---|
| UTP Category 3 | 120m | See below |
| UTP Category 4/5 | 160m | 100m |
| STP Type 1 | 375m | 145m |
| STP Type 2 | 375m | 145m |
| STP Type 6 | 250m | 95m |
| STP Type 8 | 185m | 70m |
| STP Type 9 | 250m | 95m |
Two different categories of UTP cable are commonly used. The preferred type is data-grade Category 4 or Category 5 cable, such as AT&T 2061 and Northern Telecom BDN.
You are not advised to use ordinary voice-grade UTP Category 3 cable, such as IBM Type-3, AT&T DIW, and Belden Type-1154A, on a 16 Mbps Token Ring. However, it may be possible to use well-installed UTP Category 3 cable over a distance of up to 50m. The distance may be further reduced if temperatures exceed 20°C (68°F).
To attach a device to the UTP (RJ-45) connector of a Token Ring switch port, determine the port interface mode and observe the standard pin connections as in Table 2-6.
| RJ-45 Pin | Node Mode | Concentrator Mode |
|---|---|---|
| 3 | Tx- | Rx- |
| 4 | Rx+ | Tx+ |
| 5 | Rx- | Tx- |
| 6 | Tx+ | Rx+ |
To attach a device to the STP (DB-9) connector of a Token Ring switch port, determine the port interface mode and observe the standard pin connections as in Table 2-7.
| DB-9 Pin | Node Mode | Concentrator Mode |
|---|---|---|
| 1 | Rx+ | Tx+ |
| 5 | Tx- | Rx- |
| 6 | Rx- | Tx- |
| 9 | Tx+ | Rx+ |
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