Panasonic NN46240-501 - Manual (Page 203)

11 System software upgrade
Nortel Secure Router 8000 Series
Configuration Guide - Basic Configuration
11.1 Introduction
This section describes the concepts that you need to know before you upgrade the system
software:
• System software upgrade
• License
11.1.1 System software upgrade
A
CAUTION
• When you upgrade the system software, you must upgrade the license that is integrated
with the system software.
• Upgrade the system software and license under the guidance of technical support
engineers.
• Check the existing system software version before you perform an upgrade.
If required, you can add new features to the current router by upgrading the system software.
Before you upgrade the system software, you must obtain the system software and license
from Nortel.
The license contains two files: paf.txt and license.txt. The two files should be placed at the
flash root directory of the master and slave RPUs.
After the upgrade is complete, do not delete the previous system software. If the upgrade fails,
you can restore the system software to the previous version.
11.1.2 License
The license can be used to control the availability of product features on a dynamic basis. For
example, if the license file indicates that a particular feature is available, you can see all
related commands and functions after you start the system. If the license file specifies that a
feature is unavailable, related commands and interfaces are not displayed.
At the same time, the license mechanism controls the maximum resources that users can use,
such as the number of routes, LSPs, CR-LSPs and VPN instances.
In general, the price of a product is in direct proportion to its features and functions. The
license mechanism can add or reduce features as required. For example, if certain features or
functions are not required, these features can be disabled through the license file. If the
features are later required, you can buy the license of these features to enable them. This does
not affect the current features or functions. Therefore, you can choose features according to
service demands without making a great investment at the time of purchase.
11-2 Nortel Networks Inc. Issue 5.3 (30 March 2009)