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CBW240AC adding a sudordinate AP

Bacha1976
Beginner
Beginner

 

I have a wireless network with a Cisco CBW240AC access point, I am trying to add another CBW240AC access point as a subordinate AP and according to the documentation you just need to connect the new AP into the LAN as your existing AP and the new AP with update its code to match and download its configuration from the existing AP. But this not happening the new AP starts to boot up but then just hangs in a state with the LED on the front blinking from Green, Amber and to Red. I can however SSH to the new AP and access a limited command line (So it has entered some kind of running state ) and view logs but the logs have so far not been very useful in providing any helpful information. Any help or insight would be greatly appreciated.

1 Accepted Solution

Accepted Solutions

Bacha1976
Beginner
Beginner

Actually last night I found out what the issue was. DHCP attribute option 43 needed to be configured on my DHCP server. I have not been able to find where in the documentation it states this so that was a little frustrating but other than that I have found this to be a great wireless solution for small to medium size environments. It is very scalable and quick and easy to setup just as advertised.

 

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2 Replies 2

Rich R
VIP Advisor VIP Advisor
VIP Advisor

Does this help?
https://www.cisco.com/c/en/us/support/docs/smb/wireless/CB-Wireless-Mesh/kmgmt-2322-flashing-red-LED-pattern-day-zero-setup-CBW.html

And of course make sure they both have the latest firmware installed: https://software.cisco.com/download/home/286324978/type/286325362/release/10.3.1.0

 

___________________________________________
TAC recommended codes for AireOS WLC's
Best Practices for AireOS WLC's
TAC recommended codes for 9800 WLC's
Best Practices for 9800 WLC's
Cisco Wireless compatibility matrix
Field Notice: FN-72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Recommended
WARNING - see CSCwd37092 Throughput degraded after upgrading to code 8.10.181.0/17.3.6 - 2800/3800/4800 series
- The fix for CSCwd37092 is now released in 8.10.183.0 and
- For IOS-XE 17.3.6 select controller model, go to IOS XE Software AP Service Pack, select CSCwd40096 17.3.6 APSP2
Field Notice: FN-63942 Lightweight APs and WLCs Fail to Create CAPWAP Connections Due to Certificate
      Expiration - Software Upgrade Recommended
Field Notice: FN-72524 - During Software Upgrade/Downgrade IOS APs Might Remain in Downloading State
     After 4 Dec 2022 Due to Certificate Expiration - Fixed in 8.10.183.0 and 17.3.6 APSP5 (APSP_CSCwd83653)
     Also fixed in 8.5.182.7 (8.5 mainline) and 8.5.182.105 (8.5 IRCM) if you can't upgrade to 8.10
     TAC confirmed that subordinate Mobility Express APs downloading by TFTP are not affected so ME 8.5.182.0 still works
     Note that 8.10.181.0 and 8.10.182.0 have been deferred (withdrawn) and are effectively unsupported by Cisco
Leo Laohoo's list of bugs affecting 2800/3800/4800/1560 APs
___________________________________________
Richard R

Bacha1976
Beginner
Beginner

Actually last night I found out what the issue was. DHCP attribute option 43 needed to be configured on my DHCP server. I have not been able to find where in the documentation it states this so that was a little frustrating but other than that I have found this to be a great wireless solution for small to medium size environments. It is very scalable and quick and easy to setup just as advertised.

 

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