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Token Ring Modules

Token Ring Modules

Catalyst 5000 family switches support both 4- and 16-Mbps Token Ring networks. This chapter describes the Token Ring module (WS-X5030) and the Fiber Token Ring module (WS-X5031) and consists of these sections:

For specifications on the Token Ring module, see Appendix A, "Specifications." For information on configuring the Token Ring module, refer to the Software Configuration Guide for your switch.

For information on installing Token ring modules, refer to Chapter 3, "Switching Module Installation."

Token Ring modules run their own software image in addition to the supervisor engine software image. Refer to the Catalyst 5000 Family Token Ring Module Configuration Note or the Catalyst 5000 Family Fiber Token Ring Module Configuration Note for further information.

Token Ring Module (WS-X5030)

The Token Ring module (WS-X5030), shown in Figure 8-1, has 16-shielded RJ-45 connectors for unshielded twisted-pair (UTP) or foil twisted-pair (FTP) copper wire Token Ring connections. These ports allow full- or half-duplex connections to other switches, hubs, or end nodes.


Figure 8-1: Token Ring Module (WS-X5030)


The Catalyst 5000 family Token Ring module provides the following features:

The Catalyst 5000 family Token Ring module requires Catalyst 5000 family supervisor engine software release 3.1(1) or later.

The LEDs provide status information for the module and the individual port connections. The LEDs are described in Table 8-1.


Table 8-1: Token Ring Module (WS-X5030) LED
Descriptions
LED State Description

STATUS

Indicates a series of self-tests and diagnostic tests.

Green

All the tests pass.

Red

A test other than an individual port test failed.

Orange

System boot, self-test diagnostics running, or the module is disabled.

Status

Indicates the port status.

Green

The port is operational.

Orange

The link has been disabled by software.

Flashing orange

The link is bad or has been disabled because of a hardware failure.

Briefly flashes orange

Diagnostics are running on the port.

Activity

Indicates the port activity.

Green

The port is activity.

Off

The port is idle.

Fiber Token Ring Module (WS-X5031)

The fiber Token Ring module (WS-X5031), shown in Figure 8-2, has 16 Volition VF-45 socket connectors for Token Ring connections. The 16 ports on the fiber Token Ring module support 62.5 micron multimode fixed fiber connections through ST to Volition VF-45 or SC to Volition VF-45 patch cords.


Figure 8-2:
Fiber Token Ring Module (WS-X5031)


Figure 8-3 shows the Volition VF-45 connector.


Figure 8-3:
Volition VF-45 Connector


The Catalyst 5000 family fiber Token Ring module provides the same features as the Catalyst 5000 family Token Ring module with the addition of ring in/ring out ports.

The Catalyst 5000 family fiber Token Ring module requires Catalyst 5000 family supervisor engine software software release 3.1(1) or later.

The LEDs provide status information for the module and the individual port connections. The LEDs are described in Table 8-2.


Table 8-2: Fiber Token Ring Module (WS-X5031) LED Descriptions
LED State Description

STATUS

Indicates a series of self-tests and diagnostic tests.

Green

All the tests pass.

Red

A test other than an individual port test failed.

Orange

System boot, self-test diagnostics running, or the module is disabled.

INS1

Indicates whether the port is inserted into ring.

Green

The port is inserted into the ring.

Off

The port is not inserted into the ring.

ACT2

Indicates port activity.

Green

The port is active; the port is transmitting data.

Off

The port is idle.

1INS=inserted
2ACT=activity

Ring In/Ring Out Ports

The ports on the Catalyst 5000 family fiber Token Ring module allow you to attach the module to a traditional main ring path coming from either a multistation access unit (MSAU) or a controlled access unit (CAU). You can configure any of the 16 ports to connect to the ring in/out ports of a MSAU or CAU.

The module has a loopback function that ensures that there is no break in the attached main ring, even if a port is disabled or the switch is powered off. When you attach a cable from the RI port of a MSAU port to one of the two switch ports, you join the primary and backup in a MAU/CAU main ring system. Connecting the other end of the main ring to the other switch port creates redundant paths because the two switch ports are connected to the same segment.

You must enable the Spanning-Tree Protocol to place one port in forward mode and the other in blocked mode. If there is a break in the main ring, Spanning-Tree Protocol places both ports in forward mode, and all MAC addresses on both segments are relearned.


Note You cannot automatically verify whether the port has been connected according to the configuration. Any errors, such as attaching a port to a normal MAU port when the fiber Token Ring module port has been configured for RI/RO, cause a complete disruption of the ring to which the port is attached. Therefore, be careful when using the RI/RO feature.

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Posted: Mon Feb 21 14:49:12 PST 2000
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