topic Re: AP is loosing IP details on interface wired0 after reboot in Wireless

AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Wed, 22 Dec 2021 17:51:56 GMT

After reboot AP is loosing IP configuration but it has all the other configuration details. AP is not faulty because it's happening with 5 AP'S

Re: AP is loosing IP details on interface wired0 after reboot

Mark Elsen — Thu, 23 Dec 2021 08:02:53 GMT

- Are these autonomous or controller-based ?

Re: AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Fri, 24 Dec 2021 03:42:38 GMT

This is controller based.

Re: AP is loosing IP details on interface wired0 after reboot

Mark Elsen — Fri, 24 Dec 2021 07:40:53 GMT

- What is the controller-model + software version ? What is the ap-model ?

Re: AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Thu, 30 Dec 2021 12:36:24 GMT

WLC MODEL -- 5520

image -- 8.10.130.0

AP MODEL - AIR-AP1832I-D-K9

image -- 8.10.130.0

Please me as soon as possible

Re: AP is loosing IP details on interface wired0 after reboot

Mark Elsen — Thu, 30 Dec 2021 12:41:23 GMT

- Are the access points successfully registering with the controller and do they get (associated) clients ?

Re: AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Thu, 30 Dec 2021 13:18:38 GMT

Yes. after resetting the AP when I'm configuring it... it's working fine and also able to cater internet to the clients which are connected with it...

but after rebooting it, it's loosing IP only but rest configuration in the AP remaine same link WLC details, hostname etc.

Re: AP is loosing IP details on interface wired0 after reboot

Scott Fella — Thu, 30 Dec 2021 15:36:39 GMT

Are you saying that you setup a static address on the ap from the WLC GUI (from the ap doesn’t work), and after a reload, the AP gets a dhcp and a different IP address from what you defined on the GUI? Keep in mind that any changes you make from the ap cli, will not be persistent after a reboot. Also, it’s better to use dhcp Mac reservations is you want specific AP’s to have a specific address.

Re: AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Thu, 30 Dec 2021 15:43:27 GMT

I setup static IP and WLC IP from AP CLI. then it's appearing in the WLC after that from WLC i setup all other configuration like hostname, flex connect mode etc...

but not changing AP IP from WLC GUI.

at this stage everything is working fine.

but after reload AP is loosing IP details.

Re: AP is loosing IP details on interface wired0 after reboot

Scott Fella — Fri, 31 Dec 2021 07:41:16 GMT

Don’t use the cli! Use the controller GUI to change the IP address. Changes done on the cli are not persistent.

Re: AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Mon, 03 Jan 2022 05:51:55 GMT

Dear Scott,

I tried this steps..

connected AP with console and put this command in AP's CLI "capwap ap ip 10.0.1.161 255.255.255.128 10.0.1.129 10.0.0.11

then configured primary base ip after this ap joined WLC and then I changed AP's IP from WLC gui to 10.0.1.157 then apply changes.. after this i rebooted the AP but after reboot the AP lost the IP configuration and showed network not reachable

Re: AP is loosing IP details on interface wired0 after reboot

nadeem.khoury — Wed, 06 Apr 2022 06:59:33 GMT

i have same problem on my AP1832 with 8.10.151.0 Firmware release.

Re: AP is loosing IP details on interface wired0 after reboot

Rich R — Wed, 06 Apr 2022 08:32:47 GMT

There seem to be 2 similar bugs open for static IP loss at the moment. Second one is hidden for some odd reason but if you search "capwap ap static ip lost" in bug search tool you see partial view of it in the results.

I expect they'll probably duplicate the second one to the first one at some point.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb24683

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz98899

The workaround will be to use DHCP with static IP assignments.

Re: AP is loosing IP details on interface wired0 after reboot

JesusReyes — Mon, 09 May 2022 18:04:40 GMT

I had the same problem, my APs 3800 and4800 loss the IP static after the reboot when i did an upgrade in WLC 5520before version 8.10.105 .--->new version 8.10.171

Re: AP is loosing IP details on interface wired0 after reboot

H&M — Thu, 07 Jul 2022 19:16:08 GMT

Did you find a solution? I have the same problem with a 9120AXI

Re: AP is loosing IP details on interface wired0 after reboot

Rich R — Thu, 07 Jul 2022 20:42:06 GMT

Already answered by me and Scott above previously. Possibly caused by a bug. Use DHCP with IP reservations rather than trying to configure static IPs.

Also be aware of the behaviour of CAPWAP APs to ignore the static IP and fallback to using DHCP, by design, in certain situations when discovering the WLC. This is an automatic recovery mechanism for APs with possible invalid IP configuration.

https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/119286-lap-notjoin-wlc-tshoot.html

Re: AP is loosing IP details on interface wired0 after reboot

tinkughosh16 — Fri, 08 Jul 2022 03:57:52 GMT

Hello rrudling,

Previous i have tried all the above mentioned solutions but didn't worked even Cisco TAC could not able to provide proper solution.

How my problem got fixed:

We rebooted the WLC and upgrade it to the latest TAC recommend code.

Re: AP is loosing IP details on interface wired0 after reboot

Rich R — Fri, 08 Jul 2022 08:32:52 GMT

Well as a general rule upgrading to latest code should be your starting point to eliminate known bugs - after you've checked the release notes and tested first of course.

Reserved DHCP works fine for those who like fixed IP addresses - if that didn't work that would be a problem with your DHCP server (probably config) not the AP.

Looking back at the bugs I referenced before:

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb24683 has now been terminated and CSCvz98899 has been dup'd to https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz73546 which is fixed in the latest releases of IOS-XE.

Re: AP is loosing IP details on interface wired0 after reboot

amora1977 — Tue, 26 Jul 2022 15:00:59 GMT

Hello.
I am having the same problem mentioned, the access point was registered to the controller, it basically worked for about three hours, then the ap lost ehternet connectivity and the wired0 interface appears down and does not show the ip, even when it has been set via static CLI, neither it works by DHCP, the AP does not receive ip, even when the others do.
AP model 9120AIX, firmware 17.8.1, now I don't know how to do a downgrade in case it's the code because the ap can't download the software via TFTP because it doesn't raise the ethernet interface.

Re: AP is loosing IP details on interface wired0 after reboot

Rich R — Tue, 26 Jul 2022 21:41:13 GMT

Post the complete console logs from power on.

What is the switch port configuration?

"show power inline" from the switch?