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08-19-2019 09:18 AM - edited 07-05-2021 10:52 AM
9120 AX Access point not joining controller (8.9.111.0 code) and the error I am getting at every turn is - Waiting for preferred uplink IP configuration - anyone have anything I can try. I did try to manually place IP on access point. Under Security tab - AP Policies - I checked first 3 boxes for certs SSC MIC and LSC. Also under Controller Tab - Advanced - DHCP - I enabled DHCP proxy - which was unchecked. I have since taken those configs off as there was no change in AP. Any idea on how to get this set?
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05-02-2021 02:40 PM
1. Fix this first - Do not use 8.9 code. Upgrade 3504 to any/latest 8.10. code. (Cisco doesn't support 8.9 code period.)
2. what's the AP running code - AP#show version. (Brand new AP9120 generally have 8.10.X.X code on it)
3. what's the AP's power-source OR use appropriate suggested power source for 9120.
4. Have only MIC checked on WLC.
5. share the AP connected switch port config. And does this vlan have access to DHCP server -Swap with wired client to confirm.
6. Did the physical/wired0 interface come up- show int wired, show control wired -Are AP connected to 3504 directly or POE switch.
7. share the AP connected switch port config.
8. AP#debug dhcp errors/events/packets
9. obtain full AP boot-up logs to get hints.
10. Check the Eth cable
(Done many deployments/migrations with 9120 and AireoOS 8.10 - Generally, it works very smooth.)
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08-19-2019 11:55 AM
Did you try placing AP on the same vlan as WLC management vlan ?
If possible attach AP console output to have a look.
HTH
Rasika
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08-19-2019 12:23 PM
it is untagged. Trying to use as test AP for ax/WiFi 6. This is main output as it comes up.
*06/27/2019 00:06:47.4880] <=== Deactivate Deep Green Mode
[*06/27/2019 00:06:51.3090] Waiting for preferred uplink IP configuration
[*06/27/2019 00:06:56.3160] Waiting for preferred uplink IP configuration
[*06/27/2019 00:07:01.3230] Waiting for preferred uplink IP configuration
[*06/27/2019 00:07:02.3280] Resetting wired0 and restart DHCP client
[*06/27/2019 00:07:02.5190] wired0 (Ext switch port: 7) (Logical Port: 15) (phyId: 1f) Link DOWN.
[*06/27/2019 00:07:02.5190] ===> Activate Deep Green Mode
[*06/27/2019 00:07:04.5240] wired0 (Ext switch port: 7) (Logical Port: 15) (phyId: 1f) Link UP at 1000 mbps full

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08-20-2019 12:02 AM
Your AP simply has no IP.
You could add a dhcp server on the vlan the ap's reside or you'll have to console in each ap and give them an ip manually. Capwap ap ip x.x.x.x 255.x.x.x x.x.x.x
First being ip then mask and then gateway. If the controller is on the same vlan then you wont need to point the aps towards the controller.
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08-21-2020 07:42 AM - edited 08-21-2020 07:43 AM
Configuring a static IP address on the AP via Console port worked for me:
capwap ap ip 10.0.0.2 255.255.255.0 10.0.0.1 208.67.222.222
After a reload of the AP, it happily joined its controller:
reload
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05-01-2021 01:18 AM
Thank you, this worked for me as well. I'm wondering why one out of 10 APs did not get an IP Address from DHCP
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05-01-2021 07:03 AM
*** Please rate helpful posts ***
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05-02-2021 02:40 PM
1. Fix this first - Do not use 8.9 code. Upgrade 3504 to any/latest 8.10. code. (Cisco doesn't support 8.9 code period.)
2. what's the AP running code - AP#show version. (Brand new AP9120 generally have 8.10.X.X code on it)
3. what's the AP's power-source OR use appropriate suggested power source for 9120.
4. Have only MIC checked on WLC.
5. share the AP connected switch port config. And does this vlan have access to DHCP server -Swap with wired client to confirm.
6. Did the physical/wired0 interface come up- show int wired, show control wired -Are AP connected to 3504 directly or POE switch.
7. share the AP connected switch port config.
8. AP#debug dhcp errors/events/packets
9. obtain full AP boot-up logs to get hints.
10. Check the Eth cable
(Done many deployments/migrations with 9120 and AireoOS 8.10 - Generally, it works very smooth.)
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08-20-2019 12:13 AM
@RGilbert wrote:
Waiting for preferred uplink IP configuration
This error message means the AP is "waiting" (and waiting) for a response from the DHCP server.
Is DHCP Option 43 configured correctly?
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08-20-2019 10:32 AM
I'm with Joey - check dhcp server configuration or configure static IP.
Please click Helpful if this post helped you and Select as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
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08-20-2019 05:25 PM
AP Policies - I checked first 3 boxes for certs SSC MIC and LSC
I know you have lot of good information below, but I am just curious are you using your own CA signed certs or self signed cert on AP, if now why you have SSC and LSC checked ? If Yes then why do you have MIC checked ?
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10-29-2019 12:30 PM
Hello,
Im having the same issue with my Catalyst 9115AX.
We have the WLC Cat 9800-40 with the software version 16.12.
We have configure the AP with static IP. The AP is able to have connectivity with the same network and others but in certain momment this log appear :
[*10/28/2019 18:14:48.5730] wired0 (Ext switch port: 7) (Logical Port: 15) (phyId: 1e) Link DOWN.
[*10/28/2019 18:14:48.5730] ===> Activate Deep Green Mode
and then, it lose connectivity even with the Gateway.
This makes the Controller to Disjoin the AP.
Does anyone know what could happen?
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02-23-2023 09:21 AM
use this config
WLC#wireless ewc-ap ap shell username Cisco
Cisco@192.168.129.1's password: Cisco
AP6C71.0DF2.5B94>en
Password: Cisco
then manually set AP ip
capwap ap ip 10.0.0.2 255.255.255.0 10.0.0.1 208.67.222.222
