Nortel Media Gateway 3500 Installation, Operation And Maintenance Manual page 183

Installation, Operation, Maintenance Manual
client208::~# tools tg dn
4. If there is no Telnet connection an SC board, take these 2 steps:
a. Connect to the RS232 console of the SC board and verify that the OS is actually
not running on it.
b. If the OS is running, stop the SC software as described above.
Note:
5. If hardware failure occurs on one of the SC boards and it does not respond to the
RS232 console at the OBP level, remove the failed SC board from the chassis. For
details on replacing a failed SC board, refer to 'SC Board Replacement Procedure'
on page 142.
6. Rollback the Primary SC board (if it has not been removed), using these 9 steps.
a. To remove the "upgrade in progress" marker, type rm –f
/Upgrade/UpgradeInProgress.ini and press Enter.
client208::~# rm –f /Upgrade/UpgradeInProgress.ini
b. To verify the OS version on the Primary SC board (if it's running), cat
/etc/version and press Enter.
client208::~# cat /etc/version
c. If the OS version on the Primary SC board is different from the OS version
needed by the previous software version (version 2.1 uses Solaris
version 3.0 uses Solaris
the Primary SC board as described in 'OS Downgrade' on page 180.
d. To restore the SC software from the pre-upgrade backup image, at the prompt
type tools tg rs 2 and press Enter.
client208::~# tools tg rs 2
If you downgraded the OS on the SC board, the above command may fail
because the tools script is missing.
client208::~# tools tg rs 2
tools: Permission denied
e. If the tools script is missing, extract the tools script from the backup file, by
typing tar xvf [backup_file] /Project/scripts/tools. Press Enter.
client208::~# tar xvf [backup_file] /Project/scripts/tools
Version 3.0
It is important to stop SC software on both of the SC boards prior to
proceeding to the next step.
TM
9 9/04) or it is not running at all, downgrade the OS on
183
15. Software Upgrade
TM
8 2/02 and
October 2005