Troubleshooting guide

8 — NE maintenance
8-4 Alcatel-Lucent 5620 Service Aware Manager
5620 SAM
System Administrator Guide
During a software upgrade, the 5620 SAM verifies that the new software is
compatible with the device type and that the required files are present; otherwise, the
upgrade is not attempted. You can use the 5620 SAM to roll back a software upgrade
to the previous release in the event of an upgrade failure.
ISSUs
You can use the 5620 SAM to perform an in-service software upgrade, or ISSU, on
a managed NE that has dual CPMs. An ISSU allows an NE to provide uninterrupted
service during the upgrade process.
A device software upgrade requires a CPM restart, which causes a temporary NE
outage. When an NE has dual CPMs, however, one CPM can remain active while the
other restarts using the upgraded software. The alternate CPM restarts mean that the
NE remains fully in service during an upgrade. If the upgrade of a CPM fails, the
CPM reports the failure and an alarm is raised.
Reboot and reboot upgrade
You can perform a manual or an automatic NE reboot during an on-demand software
upgrade, and can configure an automatic reboot in a software upgrade policy. See
Procedure 8-1 for information about configuring an automatic reboot in a software
upgrade policy, or Procedure 8-21 for information about performing a manual reboot
during an on-demand software upgrade.
The 5620 SAM supports the 7210 SAS and 7705 SAR reboot upgrade option, which
upgrades the system firmware during a device reboot. You can manually perform a
reboot upgrade on an NE, or configure an automatic reboot upgrade in a software
upgrade policy. See Procedure 8-1 for information about configuring an automatic
reboot upgrade, and Procedure 8-21 for information about performing a manual
reboot upgrade during an on-demand software upgrade.
Caution — Ensure that you regularly remove from the 5620 SAM the
device software images that are no longer required, for example, by
deleting the images or by exporting to a file system. An accumulation
of device software images can dramatically increase the length of
database operations such as backup, restore, and reinstantiation.
Note — You cannot upgrade an NE to a chronologically older
release. For example, you cannot upgrade from Release 10.0 R8 to
11.0 R1, because Release 11.0 R1 predates 10.0 R8. See the
5620 SAM Network Element Compatibility Guide for information
about the supported upgrade paths.
Caution — Before you attempt an ISSU, see the appropriate device
release notice and the 5620 SAM Network Element Compatibility
Guide for information about the supported upgrade paths.
Note 1 — ISSUs are restricted to device maintenance releases only.
See the device documentation for the supported ISSU release
transitions.
Note 2 — The 7210 SAS-R does not support ISSUs.
Release 12.0 R6 | November 2014 | 3HE 08861 AAAF TQZZA Edition 01