C4: Fiber RIO Main Ring and Copper DIO Sub-ring with DIO Clouds

Predefined Configuration File Name

C4_RIOMainRingFx_DIOSubRingTx_DIOCloudsVx.xx.cfg, where Vx.xx references the version number of the file.

Use of this Predefined Configuration

In some applications, you may need to install distributed equipment a long distance (up to 15 km) from other devices on an M580 network. In other cases, the operating environment may require less susceptibility to electromagnetic interference (EMI) than a copper wire connection can provide. You can meet these needs by using single-mode or multi-mode fiber optic cable on the main ring of your network.

The relationship between the main ring and a DIO sub-ring is essentially the same as with only copper connections, with 2 key differences:

the type of cable used to connect the DRS to the main ring
the type(s) of DRS you use

Devices Supported by this Predefined Configuration

The predefined configuration described here can be used with a DRS that supports either single-mode or multi-mode fiber cable:

A TCSESM063F2CU1 ConneXium extended managed switch has 2 ports that support multi-mode fiber cable.
A TCSESM063F2CS1 ConneXium extended managed switch has 2 ports that support single-mode fiber cable.

Both switches have 6 copper connections. Fiber cable can be used only on the main ring, not on the sub-rings.

With single-mode fiber cable, you can achieve distances on the main ring up to 15 km. With multi-mode fiber cable, you can achieve distances up to 2 km.

Predefined Port Connections

For this configuration, use the 2 fiber ports (labeled ports 1 and 2) for the main ring (A) connections. Use the 2 middle copper ports (labeled ports 5 and 6) to connect a DIO sub-ring (B) to the main ring.

Ports 3, 4, and 7 on the DRS are available for additional optional connections, and can be used to connect DIO clouds to the M580 system. Port 8 is reserved for port mirroring, i.e., for monitoring the status of the ports you previously selected in the switch’s port mirror web page.

NOTE: The default configuration of port 8 has port mirroring disabled.

main ring (with 2 fiber connections)

DIO sub-ring (with 2 copper connections to some STB islands)

This table describes the functionality of the ports in the above illustration:

Port	Type	Description
1	FX	fiber main ring connection
2	FX	fiber main ring connection
3	100Base-TX	DIO cloud connection
4	100Base-TX	DIO cloud connection
5	100Base-TX	copper DIO sub-ring connection
6	100Base-TX	copper DIO sub-ring connection
7	100Base-TX	DIO cloud connection
8	100Base-TX	port mirroring connection

Except when enabling or disabling ports that are not connected to either a main ring or a sub-ring, do not adjust the configuration parameters or alter the port usage in the predefined configuration file. Changing the configuration parameters or the port assignments can compromise the effectiveness and accuracy of the switch, as well as the performance of the RIO network.

Port mirroring is disabled by default. If you enable port mirroring, you can select the ports on which you want to analyze traffic as the source ports. Ports 1-7 can be selected as source ports. Port 8 is the destination port, and it cannot be changed.

WARNING

UNEXPECTED EQUIPMENT BEHAVIOR

Do not modify any parameter in the DRS predefined configuration you download to the switch, except enabling or disabling port mirroring on Ethernet ports.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Supporting Fiber Links on the Main Ring

RIO devices in the main ring often do not come equipped with fiber connectors. Therefore, some part of the main ring requires copper cable. A switch with an all-fiber main-ring predefined configuration (for example, DRS number 4 in the following diagrams) is usually implemented together with 2 other DRSs (3, below) each of which is configured to support 1 fiber connection and 1 copper connection to the main ring.

Connect the DRS directly to the in the local rack:

NOTE:

The dashed line represents fiber cable, and the solid line represents copper wire.

CPU with Ethernet I/O scanner service on the local rack

BMENOC0301/11 Ethernet communication module

copper/fiber main ring

two DRSs with C5 or C6 predefined configuration files are configured to use only 1 fiber port to support copper-to-fiber or fiber-to-copper transitions.

DRS with a C4 predefined configuration file uses 2 fiber ports that support the RIOmain ring and 2 copper ports that support a DIO sub-ring.

DIO sub-ring with two STB islands

NOTE: You can also use BMX NRP 020• fiber converter modules instead of the two DRSs shown as #4 in the previous illustration.

NOTE: A BMENOC0301/11 module can support distributed equipment via its Ethernet backplane connection to the CPU and via its device network port(s) on the front panel, respecting the limitation of 128 devices scanned per BMENOC0301/11 module.