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New Member

DHCP from 3850 for AP's - disassociates after 1:45

I am having some issues with a 2602 AP that will not stay associated with a 3850

The AP boots and associates and then after 1:45 it disassociates

I believe the issue is around DHCP and the AP not being able to find the controller?

Even though it is directly connected?

Logging on the AP I see this

Could Not resolve CISCO-CAPWAP-CONTROLLER

 

I have a DHCP pool setup on the 3850 to give the AP an address

ip dhcp pool CISCO_AP
 network 10.10.42.0 255.255.255.0
 default-router 10.10.42.1
 lease 0 8

Do I need any other options in there - I was assuming as the AP is directly connected it could discover the Controller?

 

Thanks

 

Roger

 

 

 

 

 

7 REPLIES
VIP Purple

Hi Roger,Yes 3850 need that

Hi Roger,

Yes 3850 need that AP must directly connected.

Just be sure that the DHCP scope does not overlap with some static IPs that are being already used by some other APs. If so then the disassociation is pretty normal due to the IP conflict and the AP falls back to the DHCP and get an IP address that does not conflict.

Suggest: Once AP get a DHCP IP address then you can change with static IP address via WLC.

Regards

 

New Member

There is no ip address

There is no ip address conflict - this is only 1 AP connected directly to a 3850

I am getting this error on the switch

000146: Jun 11 09:09:14.125: *%CAPWAP-3-INVALID_STATE_EVENT: 1 wcm:  Invalid AP event (CAPWAP Discovery Request) and state (CAPWAP Join Response) combination

000153: Jun 11 09:10:50.959: *%LWAPP-3-RD_ERR7: 1 wcm:  Invalid country code () for AP c4:14:3c:38:22:00  
000154: Jun 11 09:10:50.959: *%LWAPP-3-RD_ERR9: 1 wcm:  APs c4:14:3c:38:22:00 country code changed from () to (GB )

 

 

VIP Purple

000153: Jun 11 09:10:50.959:

000153: Jun 11 09:10:50.959: *%LWAPP-3-RD_ERR7: 1 wcm:  Invalid country code () for AP c4:14:3c:38:22:00  
000154: Jun 11 09:10:50.959: *%LWAPP-3-RD_ERR9: 1 wcm:  APs c4:14:3c:38:22:00 country code changed from () to (GB ).

 

These error suggest that there is wrong country code confgiured.Please check this.

 

IN Which country r u ?

paste the output of this command: show wireless country configured

also paste the output from AP: sh version

Regards

Dont forget to rate helpful posts

New Member

Sandeep I am in the UK but

Sandeep I am in the UK but this is not the issue as the country code is changed to GB correctly.

The issue turned out to be that the port the AP was connected to was not configured as an access port.

Even though it had switchport access vlan 700 enabled on it and it's operation status was access when the AP tried to associate I saw this in the logs

002449: Jun 10 14:54:05.242: %CAPWAP-3-AP_PORT_CFG: AP connected port Gi1/0/13 is not an access port.

I configured the port as a static access port and the AP has now been up for a few hours.

interface GigabitEthernet1/0/13
 description AP1
 switchport access vlan 700
 switchport mode access
end

 

 

VIP Purple

HI Roger ,Yes the LA

HI Roger ,

Yes the LA connected port must be in access mode.

Check the swicth port config for AP and WLC:

http://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/69719-wlc-lwap-config.html#aps

 

Regards

Dont forget to rate helpful posts

Cisco Employee

HiIt seems that your IP

Hi


It seems that your IP management address has partially disconnected from dhcp or has some ARP issue. Can you upgrade your WLC?

New Member

Kindly review the below link

Kindly review the below link as well :

http://www.cisco.com/c/dam/en/us/td/docs/security/ise/how_to/HowTo-12-Universal_3850_Wireless_Config.pdf

 

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