01Collection commands
After entering privileged mode:
terminal length 0
show version-running
show patch-running
show running-configshow running-config prints the whole configuration: cards, ONU profiles, VLANs, GPON interfaces and the registered ONUs. The first two outputs record the software version and patches of each card, which you will need if you have to restore the configuration onto a replaced card.
02Privileged mode
The configuration is only shown in privileged mode (prompt ending in #). For automatic backups, the simplest option is an OLT user that already logs in with enough privilege for show running-config.
In Nexus, the panel does not have a field for an enable password yet. Register the OLT with a user that logs straight into privileged mode.
03Saved configuration
As with Huawei, ZTE keeps the running configuration apart from the saved one: whatever was not saved with write is lost on reboot. The running configuration backup keeps those changes, and the history shows when they appeared.
04Passwords in the file
By default Nexus keeps the full configuration, so everything can be restored. If the installation is set to strip passwords from backups, Nexus removes the SNMP community, the TACACS key, user lines with passwords and the enable passwords from the file. Without that setting, the file keeps everything and allows a full restore.
05Automatic collection with Nexus
Nexus has been tested on C300 and C320, with firmware 1.2.5P3 and 2.1.0, over SSH and Telnet. It strips the timestamp_write line, which changes on its own, so a new version is only created when the configuration changes.
For the C600 and other series, which use a similar CLI, run Run backup in the panel and check the file before adding the device to the schedule.