Substation RV-FT (Rendezvous Fault Tolerant)

Substation ES RV-FT allows the transport definition to specify from 1 to 3 RV daemon URLs. This is done by using a semi-colon (;) delimited string for the transport URL.

Note: The value for network and service is same.

Example: 

SXTP07D ------------------- ESB Endpoint Extensions ------------------
Command ===>                                         
(ECF,SSL,ADMIN)  
                                                                      
 ESB Id     ===> RV-SERVER                                            
 Type       ===> R  (E/R EMS, or RV)                                  
 Startup    ===> Y  (Y/N Start during Substation Initialization)      
 Port       ===> 0                                                    
 URL        ===> URL1:7500;URL2:7500;URL3:7500                        
                                 
 Rendezvous Values:                                                   
 Service           ===> 8888                                          
 Network           ===> 0   0   0   0    or 
 String ===>               
 Multicast         ===> N   (N/Y)                                     
 Multicast Address ===>                                               
                                                                      
                                                                      
 EMS Server Connection Credentials:                                   
 User       ===>                                                      
 Password   ===>                          

TCPIP Stack Name  ===>           (Name of TCP/IP Stack)

When RV-FT type URL is used, Substation ES uses the first daemon to which it can connect successfully followed by the other daemons in the order. Using the above example, URL1:7500 is the first daemon connected, followed by URL2:7500 and URL3:7500 in order.

If the connectivity with the current daemon is lost, Substation ES does the following functions:

  • Initiates the connection with the first daemon in the list.
  • Attempts to connect with the second daemon, followed by the next daemon in the list in case of connection failure.
  • Returns to the current daemon and waits for re-connection if no active daemon is found.

When a connection is made, all Subjects for the transport are setup and the messages start to process.