850| Management Access AOS-W 6.5.3.x| User Guide
Parameter Description
read-only Read-only role.
no access Negates any configured parameter.
Server Group Name of the group of servers used to authenticate administrative users. See the CLI
command aaa-server-group, in the CLI Command Reference Guide for more information.
Configuring AP Image Preload
The AP image preload feature minimizes the downtime required for a switch upgrade by allowing the APs
associated to that switch to download the new images before the switch actually starts running the new
version.
This feature is supported only on the OAW-40xx Series and OAW-4x50 Series switches.
This feature allows you to select the maximum number of APs that are allowed to preload the new software
image at any one time, thereby reducing the possibility that the switch may get overloaded or that network
traffic may be impacted by all APs on the switch attempting to download a new image at once.
APs can continue normal operation while they are downloading their new software version. When the
download completes, the AP sends a message to the switch, informing it that the AP has either successfully
downloaded the new software version, or that the preload has failed for some reason. If the download fails,
the AP will retry the download after a brief waiting period.
You can allow every AP on a switch to preload a new software version, or also create a custom list of AP groups
or individual APs that can use this feature. If a new AP associates to the switch while the AP image download
feature is active, the switch will check that AP’s name and group to see if it appears in the preload list. If an AP is
on the list, (and does not already have the specified image in its Flash memory) that AP will start preloading its
image.
Once a software version has been downloaded, another version cannot be downloaded until the AP reboots.
Enable and Configure AP Image Preload
Use the following procedures to enable and configure the AP Image Preload feature on the OAW-40xx Series
and OAW-4x50 Series switches using the WebUI or CLI.
In the WebUI
1. Navigate to Maintenance > WLAN > Preload AP Image. If this feature has not yet been enabled, the
window will display the message “AP Image Preload status is Inactive. Click here to activate AP Image
Preload.” Click the link in the warning message to enable this feature and display the AP Image Preload
settings.
2. Configure the settings described in the table below, then click Apply to save your changes.
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