Troubleshooting guide

8 — NE maintenance
Alcatel-Lucent 5620 Service Aware Manager 8-5
5620 SAM
System Administrator Guide
Managing NE configuration rollbacks
You can revert to a previous device configuration on a specified 7450 ESS, 7750 SR,
or 7950 XRS. A configuration rollback minimizes the impact to services by avoiding
a system reboot. 5620 SAM supports up to five simultaneous NE rollback revert and
rescue operations.
The rollback function allows you to use a configuration temporarily and revert to a
previous configuration, for example to:
• troubleshoot network problems on an NE
• configure trial sites
• set configurations for specific days such as weekdays or weekend days
For each NE, you create a rescue file, which is the master file for the NE
configuration. In addition, you can create multiple checkpoint files for each NE at
any time. You can also create checkpoint files manually, or you can automate the
creation of the file using NE rollback policies. The checkpoint files provide a history
of NE configuration changes. The rescue file and checkpoint files are saved locally
or remotely to an FTP site or to a flash drive. You can change the NE configuration
using either file at any time without having to reboot.
The 5620 SAM scheduling function supports NE configuration rollback, which
allows you to automate NE configuration checkpoint file creation and NE
configuration reversion. See the 5620 SAM User Guide for scheduling information.
Comparing configuration files
A compare function allows you to display NE configuration changes between
selected checkpoints, a selected checkpoint and the active configuration, a selected
checkpoint and the rescue file, or the active configuration and the rescue file. This is
useful for troubleshooting NE configurations.
When you choose one of the compare NE configuration rollback file options, the
Checkpoint Compare window opens listing differences between the selected
configuration files. The window title displays the names of the NE configuration
files that are compared. For example, the title “Index 0 and rescue” indicates that the
first NE configuration checkpoint file listed on the Checkpoint Files tab is compared
with the NE configuration rescue file. Differences in the configuration files are noted
as follows:
• The plus sign (+) indicates that the configuration is in the first NE configuration
file listed in the window title but not in the second NE configuration file. In this
case, the configuration is in the checkpoint file index 0.
• The minus sign (–) indicates that the configuration is in the second NE
configuration listed file in the window title but not in the first NE configuration
file. In this case, the configuration is in the rescue file.
• Configurations that are in both NE configuration files are not listed in the
Checkpoint Compare window.
Release 12.0 R6 | November 2014 | 3HE 08861 AAAF TQZZA Edition 01