A.3 Out Of Service Downgrade Procedure - Nortel V2 Release Note

6
7
The switch has now been upgraded to 2.0.9 and is in SYNC.

A.3 Out of Service Downgrade Procedure

The following Procedure 23, Procedure 24 and Procedure 25 guide software
installers through a 2.5G and 5.0G redundant switch software downgrade. The
procedures assume that all fabrics are in sync.
Before beginning, the installer must obtain a version of the CDB which will be
compatible with the version of software being downgrade to. For example, if
the user is downgrading from release 2.0.9 to release 2.0.7, the 2.0.7 CDB
must be obtained. The 2.0.7 CDB should have been backed up prior to
b. Set the version for the current active fabric
localhost::> operation version V209_130
c. The user is now prompted to reboot the switch
Reboot the switch [y]?
Answer Y to the previous message
Note: The switch is out of service and will not carry traffic until the reboot
is complete. Downtime is dependent on the hardware setup and number of
connections configured.
Repeat step 5 for the other active sub-switch (fabric pair 3-4)
Once the switch has rebooted, the following message will appear on the serial
connection:
INFO: CC finished Performing Switch Maintenance - Sync allowed
The user can now SYNC the switch by doing:
a. localhost::> operation sync
Are you sure you want to sync the switch [n]?
b. Answer Y to the previous question
Note: References to Fabric pair 1-2 or Fabric pair 3-4 in the following
procedures refer to the active fabric of the pair.
Magellan Vector 2.0 Release Notes, Issue 1.9.1
Appendix A 35