Configuring LWAPP into embedded WLC in Cisco 3850

techguy — Sun, 04 Jul 2021 07:15:00 GMT

Hi,

I am trying to connect Cisco Aironet 1142 (which has been converted into Lightweight AP already) on WLC in Cisco Catalyst 3850. But i am getting following error when i console into LWAPP.

Translating "CISCO-CAPWAP-CONTROLLER.CISCO-CAPWAP-CONTROLLER.abcdef.net"...domain server (8.8.4.4)

*Mar 1 00:24:38.632: %CAPWAP-5-DHCP_OPTION_43: Controller address 192.168.1.254 obtained through DHCP

*Mar 1 00:24:38.632: %CAPWAP-3-ERRORLOG: Did not get log server settings from DHCP.

*Mar 1 00:24:47.634: %CAPWAP-3-ERRORLOG: Could Not resolve CISCO-CAPWAP-CONTROLLER.CISCO-CAPWAP-CONTROLLER.abcdef.net

Not in Bound state.

*Mar 1 00:25:22.646: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.

*Mar 1 00:25:32.646: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!

*Mar 1 00:25:32.660: %CAPWAP-3-ERRORLOG: Invalid event 38 & state 2 combination.

*Mar 1 00:25:32.775: %DHCP-6-ADDRESS_ASSIGN: Interface BVI1 assigned DHCP address 192.168.1.82, mask 255.255.255.0, hostname APc464.13c2.dc7a

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Cisco Catalyst 3850

ip dhcp pool test

network 192.168.1.0 255.255.255.0

default-router 192.168.1.1

dns-server 8.8.4.4

option 60 ascii Cisco AP c1140

option 43 hex f104.c0a8.01fe

wlan test 1 test

client association limit 5

client vlan 1

ip dhcp opt82

ip dhcp opt82 format add-ssid

ip dhcp required

ip dhcp server 192.168.1.1

ip multicast vlan 1

media-stream multicast-direct

no shutdown

ap dot11 24ghz rrm channel dca 1

ap dot11 24ghz rrm channel dca 6

ap dot11 24ghz rrm channel dca 11

ap dot11 5ghz rrm channel dca 36

ap dot11 5ghz rrm channel dca 40

ap dot11 5ghz rrm channel dca 44

ap dot11 5ghz rrm channel dca 48

ap dot11 5ghz rrm channel dca 52

ap dot11 5ghz rrm channel dca 56

ap dot11 5ghz rrm channel dca 60

ap dot11 5ghz rrm channel dca 64

ap dot11 5ghz rrm channel dca 149

ap dot11 5ghz rrm channel dca 153

ap dot11 5ghz rrm channel dca 157

ap dot11 5ghz rrm channel dca 161

ap group default-group

ap group test

wlan test

vlan 1

end

Configuring LWAPP into embedded WLC in Cisco 3850

Saurav Lodh — Tue, 25 Jun 2013 09:10:04 GMT

It seems your DHCP settings are not correct, option 43 using IP addresses for the controllers. AP needs to have Option 43 setup with the HEX values.

To configure the HEX value in DHCP

Under your DHCP pool config
ip dhcp pool Wireless-DHCP-POOL
option 43 [HEX Value]

The HEX Value is 3 values combined
1. f1 (it’s always f1)
2. (# of Controllers x 04) So, 3 controllers would be 0C (0C is HEX for 12)
3. The HEX Value of your IP

So here is an example

2 Controllers 1.1.1.1 & 2.2.2.2
1.1.1.1 = 01010101
2.2.2.2 = 02020202

option 43 hex f1080101010102020202

topic Configuring LWAPP into embedded WLC in Cisco 3850 in Wireless

Configuring LWAPP into embedded WLC in Cisco 3850

Configuring LWAPP into embedded WLC in Cisco 3850