Migrating X.25 over ACC to X.25 over PSI

The X.25/PSI software supports the OLAR of PSI cards that provide the capability for the

addition, replacement of PSI cards while a system is running, eliminating the need of a reboot.

This OLAR feature also improves the Single system High availability (HA).

For more information on the OLAR feature with X.25/PSI, see HP X.25/9000 User’s Guide

available at:

http://docs.hp.com/en/netcom.html#X.25

• X25mibstat utility

The X.25/PSI software provides the support of x25mibstat utility, an application that is used to

display statistics such as VC open duration, number of open SVC’s per X.25 connection for

X.25 subsystems.

For more details about the x25mibstat utility, see HP X.25/9000 User’s guide available at:

http://docs.hp.com/en/netcom.html#X.25

• System Administration Manager (SAM) and SMH (11i v3)

The X.25/PSI software supports the use of SAM and SMH for configuring the X.25 subsystem.

The use of SAM or SMH for X.25 configuration makes the configuration process easy and

simple.

• High Availability (HA) using Hunt Group Facility

The X.25/PSI software supports the High Availability (HA) feature on HP 9000 and Integrity

systems using the HP MC/Service Guard product (B3936AA) and the switches that support

Hunt Group facility, which allows multiple DTEs to share a common X.121 address.

Benefits of X.25/PSI

Following are the benefits of using X.25/PSI instead of X.25/ACC:

• Complete nettl (1m) tracing and logging facility

The X.25/PSI provides support for both level 3 and level 2 tracing and logging facility using

nettl (1m) as compared to X.25/ACC which supports only level 3 tracing and logging using

nettl (1m). It also provides the benefit of using a strace utility for more tracing of X.25 sub

system on HP-UX.

• Easy Configuration

The use of SAM or SMH for configuring the X.25 subsystem makes X.25/PSI configuration

much easier as compared to the configuration of X.25/ACC hardware. Also, the use of only

one configuration file (X.25 configuration file) for configuring X.25/PSI keeps the configuration

process simple.

• Lower hardware cost