C9: Master Copper RIO Main Ring and DIO Sub-ring with DIO Clouds
Original instructions
Predefined Configuration File Name
C9_Master_RIOMainRing_DIOSubRing_DIOCloudsVx.xx.cfg, where Vx.xx references the version number of the file.
Use of this Predefined Configuration
In some applications, DIO clouds may not provide sufficient cable redundancy. With an M580 network, you can deploy distributed equipment in a way that takes advantage of the redundant cabling architecture. The following DRS predefined configuration enables you to support distributed equipment on sub-rings. A DIO sub-ring restores communications in the event of a broken wire or inoperable device on the sub-ring.
With this predefined configuration, use 2 DRSs — one installed with this master predefined configuration and the other installed with the corresponding slave predefined configuration (C10) — to provide a redundant connection between the main ring and the DIO sub-ring. The master DRS passes data between the main ring and the DIO sub-ring. If the master DRS becomes inoperable, the slave DRS takes control and passes data between the main ring and the DIO sub-ring.
NOTE: When a master slave becomes inoperable, a slave DRS assumes the primary role in less than 50 ms. Refer to the Comparison of Master/Slave Configuration and Auto Configuration topic to determine what roles the master and slave DRSs resume if the master DRS becomes operational again.
NOTE:
DRS inner ports are the 2 ports on the switch that are connected to the main ring. When using two DRSs, connect the designated master inner ports to the designated slave inner ports.
  • For copper port master and slave DRS redundant configurations, the inner ports (port 2) connect to each other for the main ring, and port 6 on both DRSs connect to each other for a sub-ring.
  • For copper/fiber port master and slave DRS redundant configurations, the inner ports (port 3) connect to each other for the main ring, and port 6 on both DRSs connect to each other for a sub-ring.
If you are using a single DRS but plan to convert to redundant configurations in the future, record these port configurations to reduce the number of any schematic changes required because of the conversion.
NOTE: Each DRS applies a lower priority to distributed equipment, and handles packets from an RIO network before handling packets relating to distributed equipment.
Devices Supported by this Predefined Configuration
The DRS predefined configuration described here is for a TCSESM083F23F1 ConneXium extended managed switch, which has 8 copper connection ports and no fiber ports.
You cannot use RIO modules in a DIO sub-ring. Only distributed equipment with a dual-port embedded Ethernet switch and RSTP protocol support can be used. (In this manual, distributed equipment is represented by STB islands with STB NIP 2311 network interface modules.)
You cannot use a redundant pair of DRSs to connect a sub-ring to another sub-ring.
Do not connect any devices between the master DRS and the slave DRS on the main ring or the sub-ring. Install the DRSs next to each other within 100 m.
Predefined Port Connections
Use the 2 top ports (shown as 1 and 2 in the following graphic) for the main ring redundant connections. Use ports 5 and 6 for the DIO sub-ring redundant connections.
Ports 3, 4, and 7 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.
C9 
This master DRS uses a C9 predefined configuration file to act as the primary redundant connection between the main ring and the DIO sub-ring.
C10 
This slave DRS uses a C10 predefined configuration file to act as the standby redundant connection between the main ring and the DIO sub-ring.
A 
DRS connection to the main ring
B 
DRS connection to the DIO sub-ring
C 
DRS inner ports (The master and slave DRSs are linked together through ports 2 and 6. Ports 1 are linked to the main ring, and ports 5 are linked to the sub-ring.)
D 
distributed equipment (STB islands)
E 
DIO clouds
This table describes the functionality of the ports in the above illustration:
Port
Type
Description
1
100Base-TX
copper main ring redundant connection
2
100Base-TX
copper main ring redundant connection
3
100Base-TX
DIO cloud connection
4
100Base-TX
DIO cloud connection
5
100Base-TX
copper DIO sub-ring redundant connection
6
100Base-TX
copper DIO sub-ring redundant 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.