Release Notes

12
Release Notes for Cisco CDA Visual Quality Experience Application Release 3.10
Installing VQE Release 3.10 Software
• VQE incremental upgrade installs a limited set of files—only those files that are needed to upgrade
to the VQE 3.7.X software. This is the recommended upgrade path because it is relatively fast
(approximately a minute) and simple to perform. A VQE incremental upgrade preserves your earlier
VQE
3.X configurations in VCDB and in the configuration files under /etc. If a configuration
parameter is not configured by the earlier VQE 3.X configurations in VCDB, it will not be
preserved.
• ISO full upgrade installs a complete new set of VQE, Linux, Quagga, and other files. An ISO full
upgrade does backup and restore your earlier VQE 3.X configurations in files under /etc if the
parameter will be under the control of the VQE CMS in Release 3.10. Use an ISO full upgrade if
your situation does require that you install a complete new set of files and that earlier VQE 3.X
configurations be preserved.
Note If you want to preserve your earlier VQE 3.X configurations for VQE Release 3.7.X, you must use a
VQE incremental upgrade or an ISO full upgrade.
When using a VQE incremental upgrade to upgrade an earlier VQE 3.x release to Release 3.7.x, read
each of the following sections, in the order shown:
1. “Backing Up VQE Release 3.X Files Before Upgrading or Installing Software” section on page 12
2. “Using a VQE Incremental Upgrade to Upgrade from an Earlier VQE Release 3.X to Release 3.7.X”
section on page 13.
When using an ISO full upgrade to upgrade from an earlier VQE 3.x release to Release 3.7.x, read each
of the following sections, in the order shown:
1. “Backing Up VQE Release 3.X Files Before Upgrading or Installing Software” section on page 12
2. “Using an ISO Full Upgrade to Upgrade from an Earlier VQE Release 3.X to Release 3.10” section
on page 14
Backing Up VQE Release 3.X Files Before Upgrading or Installing Software
Caution An ISO clean installation or ISO full upgrade will format the hard disk on the CDE111/ CDE250 2V0.
Formatting causes all data on the hard disk to be erased. 

Before upgrading or installing software on a CDE111/ CDE250 2V0, be sure to backup all needed files
to a safe location (for example, on a server separate from the CDE111/ CDE250 2V0s being upgraded).

Before the hard disk is formatted, an ISO full upgrade does a backup of configuration files under the /etc
directory. After the hard disk is formatted, an ISO full upgrade restores your VQE 3.X configurations in
the files under /etc—but only configuration items for which a VQE Configuration Database (VCDB)
parameter exists are restored. It is recommended that you manually backup these files to another server
before proceeding with an ISO full upgrade in case of a catastrophic failure.
When upgrading to or downgrading from one VQE Release 3.X to another Release 3.X, the following
tables list the VQE Release
3.X files that you should backup prior to performing an ISO clean
installation or ISO full upgrade.
• Table 3 shows the files that must be backed up for the CDE111/ CDE250 2V0 that hosts VQE-S.
• Table 4 shows the files that must be backed up for the CDE111/ CDE250 2V0 that hosts VQE Tools
(VCPT and VCDS).