RuggedCom RS1600 ユーザーズマニュアル

RuggedSwitch

™ User Guide 

RSTP Applications 

RSTP in Structured Wiring Configurations 

RSTP allows you to construct structured wiring systems in which connectivity is 
maintained in the event of link failures.  For example a single link failure of any of 
links A through Z would leave all ports of bridges 555 through 888 connected to 
the network. 

 

Design Considerations for RSTP in Structured Wiring Configurations 

1.  Select the design parameters for the network.   

What are the requirements for robustness and network failover/recovery times?  Are 
there special requirements for diverse routings to central host computer?  Are there 
any special port redundancy requirements? 

2.  Identify required legacy support.   

Are STP bridges used in the network?  These bridges do not support rapid 
transitioning to forwarding.  If these bridges are present can they be re-deployed 
closer to the network edge? 

3.  Identify edge ports and ports with half duplex/shared media restrictions. 

Ports that connect to host computers, IEDs and controllers may be set to edge ports in 
order to guarantee rapid transitioning to forwarding as well as reduce the number of 
topology change notifications in the network.  Ports with half duplex/shared media 
restrictions require special attention in order to guarantee that they do not cause 
extended failover/recovery times. 

 

RuggedCom