Upgrade WLC / Supplementary image

 

Today I had to upgrade an AIROS cisco 2504 WLC.

After checking if the APs are supported by the new recommended version I noticed that I had to install the supplementary image also. The reason was that 1602i APs wasn’t supported by the main image in 8.5.171.0 version. Due to image size cisco created separate file for some AP images called Supplementary AP Bundle image.


Procedure:

 

Step 1:  Check the current WLC image

(Cisco Controller) >show boot

Primary Boot Image............................... 8.3.150.0 (default) (active)

Backup Boot Image................................ 8.0.152.0


Step 2: Upload the new image (AIR-CT2500-K9-8-5-171-0.aes)

I did the below procedure via HTTPS.

Verify

(Cisco Controller) >show boot

Primary Boot Image............................... 8.5.171.0 (default)

Backup Boot Image................................ 8.3.150.0 (active)


Step 3: Check Supported APs of the new version

(Cisco Controller) >show ap bundle primary

Primary Version : 8.5.171.0 

AP Supplement Bundle : Not Installed

Primary AP Image            Size                       Supported AP's

----------------       ----                        ------------

ap1g1                                  13192                   AP700

ap1g4                                  25864                   AP1850/1810

ap1g5                                  22240                   AP1815,1540

ap3g1                                  10168                   AP3500

ap3g2                                  15392                   AP2600,3600

ap3g3                                  39496                   AP2800,3800,1560

c3700                                  14372                   AP1700,2700,3700

(Cisco Controller) >


As we can see the 1602i AP that customer has do not supported by this image. We also need to notice here that AP Supplement Bundle : Not Installed

The tricky part of the procedure is here. We need to follow the same procedure to upload the supplementary image on the WLC (AIR-CT2500-AP_BUNDLE-K9-8-5-171-0.aes) BEFORE any reload.


Step 4: Upload the Supplementary image (AIR-CT2500-AP_BUNDLE-K9-8-5-171-0.aes) 

verify

(Cisco Controller) >show ap bundle primary

Primary Version : 8.5.171.0 

AP Supplement Bundle : Installed

Primary AP Image            Size                       Supported AP's

----------------       ----                        ------------

ap1g1                                  13192                   AP700

ap1g2                                  13660                   AP1600

ap1g3                                  15380                   AP1530

ap1g4                                  25864                   AP1850/1810

ap1g5                                  22240                   AP1815,1540

ap3g1                                  10168                   AP3500

ap3g2                                  15392                   AP2600,3600

ap3g3                                  39496                   AP2800,3800,1560

ap801                                  8468                     AP802

ap802                                  9968                     AP802

c1550                                  10948                   AP1550(128MB)

c1570                                  13052                   AP1570

c3700                                  14372                   AP1700,2700,3700

(Cisco Controller) >



We can see that now AP Supplement Bundle : Installed and the 1600 APs are now supported.


Now its time to reload with both images uploaded on the WLC. I will wish a good luck on the reload and hope to see all the APs back on the WLC registered 😊


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