HP-UX SNAplus2 R7 Administration Guide

Appendix DUsing SNAplus2 in a High Availability Environment
Interface card. . . . ...... [card0.......]
The backup server should also be configured so that its X.25 card uses the name card0. That way, when
ServiceGuard attempts to start the same configuration on the backup server, the card can be accessed by the
expected name.
Figure D–12 Client/Server Configuration Using X.25 DLC
Client Client Client Client
3xxx
Communications
Controller
IBM
Host
LAN
Primary HP-UX Server hp_pri
PDN Adapter
Backup HP-UX Server hp_back
PDN Adapter
Card 0Card 0
X.25
SDLC
Allowing multiple servers to use the same SDLC configuration is more difficult than with the other link types
because SDLC DLCs are often dedicated lines from one HP 9000 server to a remote SNA system.
To create a network where multiple HP systems can share the same SDLC line, use a multidrop modem to connect
the HP servers to the single SDLC line. The PSI adapter cards that support the SDLC protocol must have the same
card numbers, as configured in the SDLC Port configuration screen.
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