User`s manual

Supplement to DT-6061 User's Manual (Platform) for

IP -LTCN Application

04/23/02

Datatek Applications Inc.

3 UPDATED APPLICATION I NSTALLATION

From time to time as needed, new application or DT-6061 platform software is released. The

recommended procedure for installing new application or platform software is to use the install

command on both the active and standby DT-6061. It doesn't matter which DT-6061 is updated

first. However, it is recommended that the installation be performed on the standby system first.

Follow the directions in section 2.2 above to install new application software. After installing on

the standby only, do a switchover to force the standby to become the active. Then run for a

while. That way, if some problem is experienced as the result of using the updated application,

simply switch back to the old active which has the previous build of the application software. After

a sufficient period (the administrator decides the length), if everything is running satisfactorily,

install the updated application on the standby that was previously the active system.

Note that the install process automatically restarts the IP-LTCN application after it completes on

the active system.

Note for installing new platform software, the procedure is very similar. However, separate

instructions will be sent in the release notes that accompany the platform software.

4 SWITCHOVER – HIGH AVAILABILITY M ODE

Syntax: switchover

The switchover command, available only at the console of the active DT-6061, forces a

switchover to the standby DT-6061. The former active DT-6061 then reboots itself into standby

mode. (In contrast, if a reboot command is performed at the active console, that simply reboots

the active DT-6061 back to active mode. Note also that when REBOOT is used on an active DT-

6061, the standby allows the active a little extra time to complete so that the standby does not

mistakenly think the active is down and cause a switchover.)

5 DT-6061 COMMANDS NOT AVAILABLE IN S TANDBY HIGH

AVAILABILITY M ODE

The following commands are not allowed at the console of a standby DT-6061 enabled for high-

availability:

• app

• backup

• dtproduct

• remove

• restart

• retrieve

• rstapp

• stby

• switchover

• timezone

in an IP only network. All ports support only IP endpoints. See the Datatek web site at

www.datatekcorp.com

for more details.