Why AP cannot get ip address from WLC or external DHCP server?

[wfqk]

Hi, I configure DHCP at Cisco switch 3560 as the below show some relative configuration. AP1140 is connected to the switch port. but AP cannot get ip address. From the AP console, we can see "%CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP" WLC is connected to the switch via trunk

Also, I tried configuring internal DHCP of WLC, but it still cannot work. Anyone can give some suggestion? Thank you

Switch#

Vlan10 10.1.1.10

ip dhcp excluded-address 10.1.1.1 10.1.1.10

ip dhcp pool Vlan_10
network 10.1.1.0 255.255.255.0
default-router 10.1.1.10
lease infinite

interface FastEthernet0/1
switchport access vlan 10
spanning-tree portfast
!
interface FastEthernet0/2
switchport access vlan 10
spanning-tree portfast
!
interface FastEthernet0/3
switchport access vlan 10
switchport mode access
spanning-tree portfast
!

[Rasika Nayanajith]

Post " show capwap client rcb" output 

Have this AP previously configured & working condition ? those 0.18 sub-interfaces indication it is in H-REAP mode AP. If you do not care AP configuration, you can try below

LAP#debug capwap console cli
LAP#erase /all nvram:
LAP#reload

HTH

Rasika

[wfqk]

here are output:

AP-US-GA-GG044-F01-02-GA035>en
Password:
AP-US-GA-GG044-F01-02-GA035# show capwap client rcb
AdminState : ADMIN_ENABLED
SwVer : 7.5.1.73
NumFilledSlots : 2
Name : AP-US-GA-GG044-F01-02-GA035
Location : default location
MwarName : Cisco_68:ca:03
MwarMacAddr : ffff.ffff.0000
MwarHwVer : 0.0.0.0
ApMode : FlexConnect
ApSubMode : Not Configured
OperationState : DISCOVERY
CAPWAP Path MTU : 576
LinkAuditing : disabled
AP Rogue Detection Mode : Enabled
AP Tcp Mss Adjust : Disabled
Predownload Status : None
Auto Immune Status : Disabled
RA Guard Status : Disabled
Efficient Upgrade State : Disabled
Efficient Upgrade Role : None
TFTP Server : Disabled
802.11bg(0) Radio
ADMIN State = ENABLE [1]
OPER State = DOWN [1]
CONFIG State = UP [2]
HW State = UP [4]
Radio Mode : H-REAP
GPR Period : 0
Beacon Period : 0
DTIM Period : 0
World Mode : 1
VoceraFix : 0
Dfs peakdetect : 1
Fragmentation Threshold : 0
Current Tx Power Level : 4
Current Channel : 11
802.11a(1) Radio
ADMIN State = ENABLE [1]
OPER State = DOWN [1]
CONFIG State = UP [2]
HW State = UP [4]
Radio Mode : H-REAP
GPR Period : 0
Beacon Period : 0
DTIM Period : 0
World Mode : 1
VoceraFix : 0
Dfs peakdetect : 1
Fragmentation Threshold : 0
Current Tx Power Level : 2
Current Channel : 40

AP-US-GA-GG044-F01-02-GA035

[Rasika Nayanajith]

Since it is H-REAP you can try below configuration of your switchport that connect to this AP

interface GigabitEthernetx/x

switchport trunk encapsulation dot1q

switchport trunk native vlan 10

switchport mode trunk

spanning-tree portfast trunk

If that does not work, you have to erase you config of the AP and put the switchport back to access mode.

HTH

Rasika

[wfqk]

I erased it twice, now see below

AP30f7.0d13.30d9#show capwap client rcb
AdminState : ADMIN_ENABLED
SwVer : 7.5.1.73
NumFilledSlots : 2
Name : AP30f7.0d13.30d9
Location : default location
MwarName :
MwarMacAddr : ffff.ffff.0000
MwarHwVer : 0.0.0.0
ApMode : Local
ApSubMode : Not Configured
OperationState : DISCOVERY
CAPWAP Path MTU : 576
LinkAuditing : disabled
AP Rogue Detection Mode : Enabled
AP Tcp Mss Adjust : Disabled
Predownload Status : None
Auto Immune Status : Disabled
RA Guard Status : Disabled
Efficient Upgrade State : Disabled
Efficient Upgrade Role : None
TFTP Server : Disabled
802.11bg(0) Radio
ADMIN State = ENABLE [1]
OPER State = DOWN [1]
CONFIG State = UP [2]
HW State = UP [4]
Radio Mode : Local
GPR Period : 0
Beacon Period : 0
DTIM Period : 0
World Mode : 1
VoceraFix : 0
Dfs peakdetect : 1
Fragmentation Threshold : 0
Current Tx Power Level : 0
Current Channel : 0
802.11a(1) Radio
ADMIN State = ENABLE [1]
OPER State = DOWN [1]
CONFIG State = UP [2]
HW State = UP [4]
Radio Mode : Local
GPR Period : 0
Beacon Period : 0
DTIM Period : 0
World Mode : 1
VoceraFix : 0
Dfs peakdetect : 1
Fragmentation Threshold : 0
Current Tx Power Level : 0
Current Channel : 0

AP30f7.0d13.30d9#
AP30f7.0d13.30d9#
AP30f7.0d13.30d9#sh ip in bri
Interface IP-Address OK? Method Status Protocol
BVI1 10.1.1.24 YES DHCP up up
Dot11Radio0 unassigned NO unset up up
Dot11Radio1 unassigned NO unset up up
GigabitEthernet0 unassigned NO unset up up
GigabitEthernet0.1 unassigned YES unset up up
AP30f7.0d13.30d9

[Rasika Nayanajith]

Ok,now it is in Local mode. Now configure below 

AP#capwap ap primary-base Cisco_68:ca:03 10.1.1.9

Switchport configuration should be in access mode in vlan 10

HTH

Rasika

[wfqk]

it is still not working. I would like to contact you. Can I find your contact info from your web site? 

[Rasika Nayanajith]

Send me an email on mrncciew@gmail.com

I will have a look remotely, if you are available within next 1hr

[wfqk]

Great, Thank you Rasika!

[Daniel Ordóñez Flores]

Btw, where is your WLC management interface? is on VLAN 10 too?