ACC Installation and Configuration Guide

40 Chapter2
Software Installation and Verification
Important Installation and Configuration Notes
Important Installatio n and Configura tion
Notes
Adding or Moving Hardware After Installation
The process of running swinstall to install the ACC product creates the
loopback configuration file /opt/acc/cfg/loopback.answ,basedonthe
location of the ACC card(s). Adding or moving ACC cards after software
installation will affect the correctness of ttgen configuration files. Refer
to “Loopback Configuration File” on page 51 for more details.
If any A CC Mux cards a re added or moved within the system, you s hould
create a new loopback t tgen configuration file as describ ed in the s ection
“Installation Verification” on page 43. This file can then be used as a
template for updating the mux statements in other t tgen files.
Once a ttgen configuration file is modified, then ttgen must be run on
that file and zmon must be restarted with the new .tmem file. (See
“Creating a ttgen Configuration File” on page 63 in Chapter 3 , “Protocol
Configuration,” for more information.)
A device file is needed to access a ACC Mux card. During system startup,
zmon verifies every hardware slot specified in the ttgen configuration
file.IfavalidACCMuxcardisfound,zmon automatically re-creates the
ACC Mux device file for that hardware location. Re-creation of device
files is necessary because the H P-UX kernel may assign a different
device major number to the ACC subsystem during system bootup.
Hence, existing ACC device files may become invalid after system reboot.