9.1 Upgrade and Maintenance Overview
Devices can be upgraded and maintained by activating GTL license files, upgrading system
software, managing patches, monitoring CPU and memory usage, or restarting devices.
9.1.1 License Authorization
The AR1200 provides a platform to manage license authorizations. You can apply for, upgrade,
and activate license files to obtain corresponding rights.
When new devices are deployed, purchase new licenses to enable the license-controlled features
and functions you need. If the capacities of the existing devices are expanded, you can update
the licenses used on the devices to enable more license-controlled features and functions.
9.1.2 Software Upgrade
Software upgrade satisfy user needs for new functions by upgrading the patch file, system
software, configuration file, PAF file, and license file.
Software upgrade involves software downloading and software loading.
9.1.3 Patch Management
Loading a patch onto the system software allows the system software to be upgraded in service
without interrupting services on the device. This also improves Quality of Service (QoS).
During device operation, the system software may need to be modified due to system bugs or
new function requirements. The traditional way is to upgrade the system software after powering
off the device. This, however, interrupts services and affects QoS.
By means of patch management, the system software can be upgraded in service without
interrupting services.
Table 9-1 provides details on patch status.
Table 9-1 Description of patch status
Patch Status
Description Patch Status Transition
None A patch file is saved to the storage
medium but has not been loaded to
the patch area in memory.
The patch file will be in the running
state after being loaded from the
storage medium to the patch area in
memory.
Running A patch file is in the running state
when it is stored in the patch area
and run permanently. If a board is
reset, the patch files in the running
state on the board remain in the
running state.
A patch file in the running state can
be deleted from the patch area in
memory.
Figure 9-1 shows patch status transition.
Huawei AR1200 Series Enterprise Routers
Configuration Guide - Basic Configuration 9 Upgrade and Maintenance
Issue 04 (2012-05-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
189
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