AP Can not Join WLC

[Hussein Mahmoud]

Hi All,

I have a WLC-9800 and AIR-AP-3802E-E-K9

I configured two VLAN  in WLC ,VLAN 100 For WLC Management and VLAN 200 for AP-Management.

VLAN 100

IN Switch 

Interface Vlan 100 

IP address 192.168.100.254 255.255.255.0

Interface Vlan 200

Ip address 192.168.200.254 255.255.255.0

In WLC

Interface VLAN 100

IP address 192.168.100.1 255.255.255.0

Interface VLAN 201

IP address 192.168.200.1 255.255.255.0

In AP

Static IP

Interface Wired0 

IP address 192.168.200.100   255.255.255.0  192.168.100.254

AP-1#Capwap Ap primary-base WLC 192.168.100.1

The issue

AP not connecting to 9800 WLC ,But when configure  AP and WLC on the same VLAN  the AP connect to WLC

[Flavio Miranda]

Hi

 run "show ip int br" and make sure both vlans is "up" "up"....if not, you need to enter the vlan statement on both switch and wlc:

vlan 100

vlan 200

But, the problem seems to be routing. If you are adding the AP on vlan 200 but is need to reach wlc on vlan 100, you need to perform inter-vlan routing.

If your switch is L3, you can add the command:

ip routing.

But , is the switch is L2, you are going to need a router.

[Hussein Mahmoud]

yes the both interface VLAN 100 and VLAN 200   UP       UP , and can ping form WLC to the SW and AP.

The switch that installed L3 " C9300"

[Rasika Nayanajith · Accepted solution]

With 9800, you don't configure multiple SVIs on the controller. (like AireOS). Just have one single SVI for WLC management (int vlan 100 in your case) and that's it. No client SVI or Any other SVI is needed.

That does not mean AP needs to be on the WLC mgt VLAN (100). You can have any VLAN for AP-Mgt and that VLAN does not require to define on your 9800.

Make sure your vlan100 interface is configured as wireless management like below.

wireless management interface Vlan100

As long as your AP got L3 reachability to 9800 WLC management, that should go & register.

HTH

Rasika