RUGGEDCOM ROS
User Guide
Chapter 5
Setup and Configuration
RSTP in Structured Wiring Configurations 155
• Section5.2.2.2, “RSTP in Ring Backbone Configurations”
• Section5.2.2.3, “RSTP Port Redundancy”
Section5.2.2.1
RSTP in Structured Wiring Configurations
RSTP may be used to construct structured wiring systems where connectivity is maintained in the event of link
failures. For example, a single link failure of any link between A and N in Figure 91 would leave all the ports of
bridges 555 through 888 connected to the network.
B
A
D
2
1
4 3
F
4
1
666
3
2
4
1
777
3
2
4
1
888
3
2
4
1
555
3
2
C
KH
E
3
2
1
4
1
444
2
4
3
5
6
Figure91:Example - Structured Wiring Configuration
To design a structured wiring configuration, do the following:
1. Select the design parameters for the network.
What are the requirements for robustness and network failover/recovery times? Are there any special
requirements for diverse routing to a central host computer? Are there any special port redundancy
requirements?