Express controller software update can be performed using the controller's web
interface. Software update ensures that both the controller software and all
the Access Points associated are updated. The Access Points that have older
software are automatically upgraded to the Mobility Express software on joining
the master AP. An AP joining the controller compares its software version with
the master AP version and incase of mismatch, the new AP requests for a
software upgrade. The master AP facilitates the transfer of the new software
from the TFTP server to the new AP.
Software download on
the Access Points is automatically sequenced to ensure that not more than two
APs are downloading the software simultaneously and the queue refreshes till
all the APs requiring upgrade have downloaded the new image.
Starting release 220.127.116.11, there are two transfer modes supported for
Software Update; HTTP and TFTP. HTTP transfer mode is supported if there are
only 1800 series Access Points in the Mobility Express network. If there is a
mix of 1800 series and other supported Access Points, TFTP must be used as the
Both 1832 and 1852 Access Points share the ap1g4 file which is
included as part of the
file. For HTTP transfer mode, specify the path to 1800 series
Access Point image file on your local machine.
facilitates transfer of image from the TFTP server to the Subordinate APs. The
AP images are stored and served from the TFTP server upon request.
Before you upgrade
the Mobility Express network, ensure the following pre-requisites are met:
Pre-requisites for HTTP
The AP bundle with individual AP images downloaded from CCO is
unzipped and copied onto the local machine.
Pre-requisites for TFTP Software Update
A TFTP server is
reachable from the management IP address of the Mobility Express controller.
The AP bundle
with AP images downloaded from CCO is unzipped and copied into the TFTP server.
AIR-AP1830-K9-ME-<version>.zip file from cisco.com.
For HTTP transfer mode, download the file to the local machine which is being
used to access the Mobility Express Web UI. For TFTP transfer mode, download
the zip file on a device running TFTP server..
Unzip the file
to extract the AP images.
Select HTTP or
TFTP as the transfer mode and configure corresponding parameters on the
Software Update page.
pre-download on Mobility Express network.
Reboot of or scheduled reboot of Mobility Express Controller and
associated Access Points.
- Image pre-download on APs is
automatically sequenced, such that not more than two APs are pre-download the
- During the image pre-download
there is no service interruption. After completion of the image pre-download on
all APs, a manual or scheduled reboot of Mobility Express network must be
To begin Software
Update, perform the following steps: