Using SNAplus2 in a High Availability Environment

Using SNAplus2 with MC/ServiceGuard

capability. Following are four different ways in which applications can gain SNA network connectivity through an SNAplus2 server using a LAN.

SNAplus2 Client/Server LAN Connections

As described above, SNAplus2 can use either a standalone or a client/server configuration. In a client/server configuration, you run applications on client systems (HP 9000s or PCs) that access an SNAplus2 server through the slim process running on the server system.

Figure D-7SNAplus2 in Client/Server Configuration

Client

 

 

 

 

 

LAN

 

client/server LAN

 

 

 

connection

 

Standby LAN adapter

 

 

 

 

 

 

 

S800

Server

3xxx

Communications

Controller

IBM

Host

SNAplus2 uses an internal mechanism to inform applications running on client systems about the IP addresses they should use to access each particular server. This mechanism does not forward information about the IP address associated with the SNAplus2 package, so clients will use only the sta tionary IP address associated with the server’s LAN adapter.

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Appendix D