Cisco Cisco Access Registrar 4.2 Especificaciones descargar pdf (Pagina 392)

8-2

Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 8 Managing Controller Software and Configurations

Upgrading Controller Software

When you upgrade the controller’s software, the software on the controller’s associated access points is

also automatically upgraded. When an access point is loading software, each of its LEDs blinks in

succession. Up to 10 access points can be concurrently upgraded from the controller.

Caution Do not power down the controller or any access point during this process; otherwise, you might corrupt

the software image! Upgrading a controller with a large number of access points can take as long as 30

minutes, depending on the size of your network. However, with the increased number of concurrent

access point upgrades supported in software release 4.0.206.0 and later, the upgrade time should be

significantly reduced. The access points must remain powered, and the controller must not be reset

during this time.

Guidelines for Upgrading Controller Software

Follow these guidelines before upgrading your controller to software release 4.2 from a previous release:

–

Make sure you have a TFTP server available for the software upgrade. Keep these guidelines in

mind when setting up a TFTP server:

–

Controller software release 4.2 is greater than 32 MB; therefore, you must make sure that your

TFTP server supports files that are larger than 32 MB. Some TFTP servers that support files of

this size are tftpd and the TFTP server within the WCS. If you attempt to download the 4.2

controller software and your TFTP server does not support files of this size, the following error

message appears: “TFTP failure while storing in flash.”

–

If you are upgrading through the service port, the TFTP server must be on the same subnet as

the service port because the service port is not routable, or you must create static routes on the

controller.

–

If you are upgrading through the distribution system network port, the TFTP server can be on

the same or a different subnet because the distribution system port is routable.

–

A third-party TFTP server cannot run on the same computer as the Cisco WCS because the WCS

built-in TFTP server and the third-party TFTP server require the same communication port.

• If your controller is running software release 3.2.195.10 or a later 3.2 release, 4.0.206.0 or a later

4.0 release, or 4.1.171.0 (or a later 4.1 release), you can upgrade your controller directly to software

release 4.2. If your controller is running an earlier 3.2 or 4.0 release, you must upgrade your

controller to an intermediate release prior to upgrading to 4.2. Table 8-1 shows the upgrade path that

you must follow prior to downloading software release 4.2.

Note To see the software release that your controller is currently running, click Monitor and look

at the Software Version field under Controller Summary on the controller GUI or enter show

sysinfo on the controller CLI.

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Cisco Cisco Access Registrar 4.2 Especificaciones Pagina 392