Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 3 Maintenance
Reverting to an Earlier Software Load
Figure 3-9 Restoring the database—traffic loss warning
Step 7
Click Yes.
The Restore Database dialog box monitors the file transfer.
Figure 3-10 Restoring the database – in-process notification
Step 8
Wait for the file to complete the transfer to the TCC+.
Step 9 Click OK when the “Lost connection to node, changing to Network View” dialog box appears. Wait for
the node to reconnect.
3.6 Reverting to an Earlier Software Load
Prior to Release 2.2.1, the ONS 15454 could not revert to an earlier software database without deleting
the current database and losing both cross-connect and DCC connectivity. The revert would result in a
loss of traffic until the user manually restored the previous database or recreated the existing circuits and
provisioning.
Reverting to a 2.2.1 or later load will switch to the older software load and its attendant database without
affecting traffic or DCC connectivity. This feature requires dual TCC+ cards and CTC software Release
2.2.1 or later as the protect version.
When you click the Activate button after a software upgrade, the TCC+ copies the current working
database and saves it in a reserved location in the TCC+ flash memory. If you later need to revert to the
original working software load from the protect software load, the saved database installs automatically.
You do not need to restore the database manually or recreate circuits.
Tip The revert feature is useful if a maintenance window closes while you are upgrading CTC software.
You can revert to the standby software load without losing traffic. When the next maintenance
window opens, complete the upgrade and activate the new software load.