06-22-2009 03:39 PM - edited 11-18-2020 02:29 AM
Upgrade procedure for the Wireless LAN Controller software through the CLI
CLI Upgrade Procedure - Step-by-Step Instructions
Complete these steps:
It is best to complete this procedure via the console port, but you can also SSH or Telnet (if enabled) to the controller's management IP address in order to complete the procedure. The use of SSH or Telnet results in the loss of connectivity with the controller during the reboot process following the image download. Therefore, console access should be available in order to expedite troubleshooting and recovery of the controller if the upgrade fails. Login to the controller and issue the show sysinfo command in order to verify the current software that runs on the controller.
This is sample output of the show sysinfo command, which shows that the controller runs 4.0.217.0:
(Cisco Controller) >show sysinfo
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 5.0.148.0
RTOS Version..................................... 5.0.148.0
Bootloader Version............................... 4.2.99.0
Build Type....................................... DATA + WPS
System Name...................................... Cisco_48:53:c3
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.14179.1.1.4.3
IP Address....................................... 10.77.244.204
System Up Time................................... 0 days 0 hrs 1 mins 58 sec
System Timezone Location.........................
Current Boot License Level.......................
Next Boot License Level..........................
Configured Country............................... IN - India
Operating Environment............................ Commercial (0 to 40C)
Internal Temp Alarm Limits....................... 0 to 65 C
Issue the transfer download filename filename command in order to specify the name of the image.
Here is an example:
(Cisco Controller) >transfer download datatype code
(Cisco Controller) >transfer download mode tftp
(Cisco Controller) >transfer download serverip 10.77.244.196
(Cisco Controller) >transfer download path .
(Cisco Controller) >transfer download filename AIR-WLC4400-K9-5-2-178-0.aes
Issue the transfer download start command in order to initiate the upgrade process.
Here is an example of the upgrade process:
(Cisco Controller) >transfer download start
Mode............................................. TFTP
Data Type........................................ Code
TFTP Server IP................................... 10.77.244.196
TFTP Packet Timeout.............................. 6
TFTP Max Retries................................. 10
TFTP Path........................................ ./
TFTP Filename.................................... AIR-WLC4400-K9-5-2-178-0.aes
This may take some time.
Are you sure you want to start? (y/N) y
TFTP Code transfer starting.
TFTP receive complete... extracting components.
Executing backup script.
Writing new RTOS to flash disk.
Writing new Code to flash disk.
Writing new APIB to flash disk.
Executing install_apib script.
Executing fini script.
TFTP File transfer is successful.
Reboot the switch for update to complete.
Upgrade the bootloader version (4.1 and later version upgrades only) using the AIR-WLCxxxx-K9-5-2-157-0-ER.aes file. The process is identical to steps 1 through 6 of this procedure.
Note: In the 2100 Series WLC, you cannot upgrade the bootloader version due to hardware limitations. Also, this model does not require a bootloader upgrade as do the larger WLC models.
Note: You can upgrade the boot image before or after the main image.
Here is an example of the boot image CLI upgrade process:
(Cisco Controller) >transfer download start
Mode....................... TFTP
Data Type.................. Code
TFTP Server IP............. 10.77.244.196
TFTP Packet Timeout........ 6
TFTP Max Retries........... 10
TFTP Path.................. ./
TFTP Filename.............. AIR-WLC4400-K9-5-2-157-0-ER.aes
This may take some time.
Are you sure you want to start? (y/N) y
TFTP Code transfer starting.
TFTP receive complete... extracting components.
Writing new Emergency Bootloader to flash disk.
Writing new Emergency Bootloader RTOS to flash disk.
TFTP File transfer is successful.
Reboot the switch for update to complete.
Video
The configuration is not kept when you downgrade versions of controller code. Controllers can be upgraded from one release to another. Should you require a downgrade from one release to another, you possibly cannot use the higher release configuration. The workaround is to reload the previous controller configuration files that were saved on the backup server or reconfigure the controller.
Complete these steps in order to update controller (and access points) software using the Wireless Control System (WCS).
Upgrade
Wireless LAN Controllers
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