Archive for Wireless

Cisco WLC Upgrade Outline

Study the Release Note completely is the most important thing – especially the Open Caveats and downgrade limitation

  1. Check upgrade requirement
    1. Any need to upgrade FUS?
    2. Any need to upgrade to an interim SW version before further upgrading to the target SW version
    3. Open Caveats that hits the setup of our environment and the impact
    4. All APs are supported in the latest firmware? Any bug for any AP model?
    5. Fallback – Issue to hit if we downgrade from this version to the earlier version
  2. Prepare Image(s) – FUS & OS SW
  3. Pre-check & Implementation
    1. AP inventory – “show ap inventory all” <- check number of APs and who are they
    2. Check number of wireless interfaces being down
    3. Download WLC SWs to the WLC
    4. Check boot sequence – “show boot”  (the new image should be the primary image)
    5. Pre-download – “config ap image predownload”
    6. Check the pre-download status – “show ap inventory all” / GUI: Wireless > Access Point > All AP
    7. Reboot the controller – GUI: Commands > Reboot
  4. Post-check
    1. Check number of APs and who are they
    2. Check number of wireless interfaces being down
    3. Sample check a few APs Flexconnect group & VLAN mapping if any

 

Reference
my80211.com, WLC: Predownload The Image To The Access Points From The Controller CLI – http://www.my80211.com/cisco-wlc-cli-commands/2011/2/20/wlc-predownload-the-image-to-the-access-points-from-the-cont.html

(Used to upgrade from 8.1.110.0 to 8.2.100.0)

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