MAX Administration Guide
4-1
4
Changing System Software Versions
!
Caution:
When you upgrade a MAX unit’s version of TAOS, the newer version might use a
configuration file format that is incompatible with the version that preceded it. The upgrade
process automatically converts the unit’s configuration file to the newer format. You need a
backup copy of the configuration file in the older format in case it ever becomes necessary to
revert back to a previous version of TAOS. If you fail to create and save a backup copy of the
configuration before your change a MAX unit’s version of TAOS, you might lose all
configuration information.
!
Caution:
If possible use TFTP to change a MAX unit’s version of TAOS. TFTP is the most
reliable way to obtain, store, and then change the version of TAOS.
!
Caution:
The standard software files you use to upgrade to TAOS 9.0 require additional flash
memory available to the MAX 6000 unit only by way of an external PCMCIA flash card. (This
does not apply to MAX 3000 and MAX 800 units.)
Before you begin to change a MAX unit’s system software, you must enable the unit’s Field
Service and Operations parameters. You must also verify that you are staying with the same
build of the software. In addition to knowing the VT100 interface, you must be prepared to use
the DO Command menu, as described in Chapter 2, “DO Commands and Administrative
Tasks,” to access the diagnostics commands that you use to upgrade or downgrade the unit’s
system software.
Note:
Changing the system software is an exceptional situation in this regard. Under most
circumstances, diagnostics commands are not required for correct operation of the MAX unit.
Trivial File Transfer Protocol (TFTP) provides a more reliable way to obtain, store, and install
the system software to your unit than is the alternative, which is through the serial port of the
unit.
Notice of discontinuance of configurable RADIUS port and ID space . . . . . . . . . . . . . 4-9