Siemens RUGGEDCOM ROX II User Manual page 680

Chapter 14
Network Redundancy
Section 14.3.2
RSTP Applications
This section describes various applications of RSTP.
CONTENTS
• Section 14.3.2.1, "RSTP in Structured Wiring Configurations"
• Section 14.3.2.2, "RSTP in Ring Backbone Configurations"
• Section 14.3.2.3, "RSTP Port Redundancy"
Section 14.3.2.1
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
bridges 555 through 888 connected to the network.
Figure 37: Example - Structured Wiring Configuration
To design a structured wiring configuration, do the following:
634
111
4 3
C
1 2
333
6
5 4
G I H
1 2 1
555 666
4 3 4
Figure 37
1 1
A
222
B
2 2
4
E
D
1
444
3 6
5
K J M
2 1 2
777
3 4 3
would leave all the ports of
3
F
2
3
4
L N
1 2
888
4 3
RUGGEDCOM ROX II
CLI User Guide
RSTP Applications