WLC DHCP Settings - Under Dynamic Interface configuration

Hi Guys,
If I have a dynamic interface that is connected to a subnet where the router interfaces have DHCP servers configured under the helper address commands, do I need to configure the DHCP fields under the dynamic interface configuration?
I have helper address configured on the connected routers AND these fields configured with the same DHCP servers.
Just wondering if I can take the IPs out of the WLC configuration?
Many thx indeed,
Ken

Ken, the DHCP address under the dynamic interface, is the address the WLC will unicast the DHCP request to when a client tries to use that interface. Under normal operation this address is needed. There is a way to get the WLC to bridge the packet to the wire so that it is a broadcast instead of a unicast packet. CLI command is config dhcp proxy disable.
But I do believe that even if you issue the CLI command, the software wants the DHCP address listed under the dynamic interface.
HTH,
Steve

Similar Messages

2125 WLC Dynamic interfaces and their physical interface

I'm trying to broadcast multiple SSIDs per AP. I would like the new second SSID to be on a different VLAN. I have been reading this article http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00805e7a24.shtml#dyn-interface and it looks like you create a trunk port on the switch that the WLC is connected to, which makes sense to me. A friend however told me to use a seperate physical interface on the WLC and assign the dynamic interface to it and connect it to the desired VLAN, instead of using the interface that is currently in production. I liked this idea because I would have downtime trying to reconfigure the port as a trunk that's in production.
So I guess my question is, if I use a secondary port on the WLC to connect to a different network than what the AP is on how will communication work? When the AP sends data to the WLC will everything be encapsulated in CAPWAP? How about the primary link connecting the WLC to the primary production network? Will this data to and from the WLC on the switch retain it's CAPWP encapsulation? Now that I'm thinking about it I guess it would have to since the WLC is what decapsulates the CAPWAP data and not the switch...
I would just like some advice on if I'm doing this correctly. Thanks a lot! -Mark

We generally recomment one trunk port to be configured for different VLAN (for management and AP inetreface) but we can use other ethernet port also on WLC for any differnt VLAN config.
For all your port related queries please find the attach link with the diagramme.:-
http://www.cisco.com/en/US/docs/wireless/controller/7.0/configuration/guide/c70mint.html
Q. How does a WLC switch packets?
    A. All the client (802.11) packets are encapsulated in a LWAPP packet by the LAP and sent to the WLC. WLC descapsulates the LWAPP packet and acts based on the destination IP address in the 802.11 packet. If the destination is one of the wireless clients associated to the WLC, it encapsulates the packet again with the LWAPP and sends it to the LAP of the client, where it is decapsulated and sent to the wireless client. If the destination is on the wired side of the network, it removes the 802.11 header, adds the Ethernet header, and forwards the packet to the connected switch, from where it is sent to the wired client. When a packet comes from the wired side, WLC removes the Ethernet header, adds the 802.11 header, encapsulates it with LWAPP, and sends it to the LAP, where it is decapsulated, and the 802.11 packet is delivered to the wireless client. For more information about this, refer to the LWAPP Fundamentals section of the document Deploying Cisco 440X Series Wireless LAN Controllers.
Q. What are the various options available to access the WLC?
    A. This is the list of options available to access the WLC:
        GUI access with HTTP or HTTPS
        CLI access with Telnet, SSH, or console access
        Access through service port
    For more information on how to enable these modes, refer to the Using the Web-Browser and CLI Interfaces section of the document Cisco Wireless LAN Controller Configuration Guide, Release 5.1. Usually, the management interface IP address is used for GUI and CLI access. Wireless clients can access the WLC only when the optionEnable Controller Management to be accessible from Wireless Clients is checked. In order to enable this option, click the Management menu of the WLC, and click Mgmt via Wireless on the left-hand side. WLC can also be accessed with one of its dynamic interface IP addresses. Use the config network mgmt-via-dynamic-interface command to enable this feature. Wired computers can have only CLI access with the dynamic interface of the WLC. Wireless clients have both CLI and GUI access with the dynamic interface.

Doubt with Dynamic Interfaces and VLANs

Hello.
I am trying to get wirelles clientes and APs to be on the same VLAN/subnet, now is working with management interface on my WLC 5508. My problem comes up when I change them to a new dynamic interface.
Before any change:
VLAN: 8
Management Interface IP: 192.168.9.2/23
Gateway: 192.168.8.1
DHCP Server: 192.168.8.2
WLAN SSID linked to Managment interface: Ray123
APs on VLAN 8 and subnet static IP range192.168.9.0/23
There is no dynamic interface.
After changes.
VLAN: 0
Management Interface: 192.168.6.2/23
Gateway: 192.168.6.1
DHCP Server: 192.168.6.2
Dynamic interface name: Wireless-1
VLAN: 8
Management Interface IP: 192.168.9.2/23
Gateway: 192.168.8.1
DHCP Server: 192.168.8.2
WLAN SSID linked to Dynamic interface: Ray123
APs still on VLAN 8 and subnet static IP range192.168.9.0/23
After all this done i can see by cdp neighbors all my APs i can ping them and management interface too, but APs are not registered, no clients too.
According to this guide:
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00805e7a24.shtml
Dynamic interfaces and APs should be on the same VLAN.
But this another guide states the opposite:
http://www.cisco.com/en/US/docs/wireless/controller/7.0/configuration/guide/c70mint.html
"Set the APs in a VLAN that is different from the dynamic interface configured on the Controller. If the APs are in the same VLAN as the dynamic interface, the APs are not registered on the Controller and the 'LWAPP discovery rejected' and 'Layer 3 discovery request not received on management VLAN' errors are logged on the Controller"
I cant understand why VLANs for APs and dynamic interfaces should be on different, it has no sense to configure a vlan intended for APs which shouldnt be on the same vlan.
Please tell me what is wrong.
Thanks in advance.

You have to tell the APs where the WLC lives now, 192.168.6.2.
You can do this in the following ways:
Manual Prime the APs
option 43
dns
ip forward udp 5246
move the aps to the same vlan as the management interface let them join and then chnage the vlan
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."

ISE and WLC dynamic interface group assignment ?

I have a somewhat large deployment coming up with several WLC dynamic interfaces assigned to an interface group, replicated across for multiple sites. I understand that ISE can return the VLAN ID to the WLC to place the client in, but if I'm using interface groups, this seems to negate the usefulness of the interface group to load clients across multiple VLANs. Not only that, but with the number of dynamic interfaces (VLAN ID's), multiplied by the number of sites, would seem to be overwhelming on the ISE side policy configuration.
Is it possible for ISE to return an Interface name/group to the WLC instead of just a VLAN ID ?
TIA

I understand that WLC 7.2 code can now accept the interface group name as a AAA override, which is great, but it doesn't specify the AAA source (ISE vs. ACS).
This is the example I'm questioning: (they use the VLAN ID only, instead of an interface name)
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080bba10d.shtml#topic17
Edit:
Found the correct Attribute Under "Adv. Attribute Settings" in the Airspace Authorization Profiles (Airespace:Airespace-Interface-Name).

WLC Dynamic Interface

I wonder why we need Dynamic Interfaces. I have created two WLANs. One is WPA2-Enterprise obtaining vlan id's per user from Radius server and the other WEP wlan for guest users whose traffic should go to a specific guest vlan. I am using an external DHCP server and configured WLC not to proxy dhcp requests and to act as a bridge.
I had to create dynamic interfaces on WLC (we are using 5508 with software version 7) for all the VLANs which radius server returns. I could make it with only defining the dynamic interfaces and entering 0.0.0.0 for ip addresses.
For the other WLAN with WEP, I have to enter and IP for the dynamic interface to work. I am not sure if this is a requirement or my misconfiguration, but I do want a way not to set an IP address for the dynamic interface. I do not want to waste addresses and also do not want the clients to be able to access wlc through that IP address.
I appreciate any comment on why I need IP addresses for dynamic interfaces.

Vadood... The WLC does use that IP address as it needs to have layer 2 connection to any subnet it will place users on. Even is your doing AAA override, the radius tell the WLC that that device needs to be on vlan x and the WLC will put that device on vlan x, but if the WLC has no IP address on that subnet, well then the communication stops there. The user will never get an IP address if using dhcp or if the device has a static, the WLC has no way to communicate to that subnet.
By the way, users can't access the dynamic interface by default. You have to enable that. But then again, they can try to access the management interface also, unless you disable globally management over wireless.
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WLC dynamic interface limit

Hi,
I have a WISM with sw version 4.0.179.11 wich I try to add more dynamic interfaces on. However I get the message " Can't create more than 64 entries".
I find in the deployment guide for WLC - quote: "Dynamic Interfaces are created by users and are designed to be analogous to VLANs for wireless LAN client device. The WLC will support up to 512 Dynamic Interface instances. "
Has anybody encountered this limitation before?
How can I add more than 64 interfaces ?
regards rolf

Hi.
I have a customer wth a WLC which has DHCP Proxy disabled and Primary & Secondary DHCP servers configured (external to the WLC).
The problem I've just started looking at is...if the Primary has run out of leasable IP addresses, the WLC doesn't appear to request one from the Secondary server.
It looks like (without any real investigation) the "I've run out of addresses" response from the Primary server is sufficient for the WLC to believe that the Primary is still on the network and it doesn't need to go to the Secondary.
I'll add more as and when I do more testing.

Cannot contact Non-native dynamic interfaces on WLC 4402

Hi,
          In my company we are recently planning to get a DMZ anchor for Guest WLAN. Our setup is as following
We have two 5508 WLCs in inside corporate network which serves for the corporate wlan. Recently we put one 4402 in DMZ in LAG mode. Two SSID has been created in 4402 namely guest and consultant. We have mobility configured perfect between these three. For the the two ssids the 4402 is the anchor.   We have created sub interfaces in ASA for management and two WLANs. The port channel is also configured proper with the native vlan for management and allowing all three vlans through it. The concern is that we cannot ping the untagged dynamic interface of WLC. The WLAN clients are getting DHCP ip perfectly on each ssid, I mean in different networks. But the clients cannot reach the gateway which is the subinterface of ASA. If I am using the webauth I am not getting redirected to the authentication page. but if I set the security to none (both L2 and L3) I can reach up to the corresponding dynamic interface and not beyond that.
Below are my configuration details
At switch side
interface Port-channel1
switchport trunk encapsulation dot1q
switchport trunk native vlan 177
switchport trunk allowed vlan 177-180
switchport mode trunk
interface GigabitEthernet2/0/26
switchport trunk encapsulation dot1q
switchport trunk native vlan 177
switchport trunk allowed vlan 177-180
switchport mode trunk
channel-group 1 mode on
interface GigabitEthernet1/0/26
switchport trunk encapsulation dot1q
switchport trunk native vlan 177
switchport trunk allowed vlan 177-180
switchport mode trunk
channel-group 1 mode on
WLC configurations
(Cisco Controller) >show interface summary
Interface Name                   Port Vlan Id IP Address      Type    Ap Mgr Guest
ap-manager                        LAG untagged 192.168.7.3     Static Yes    No
management                      LAG untagged 192.168.7.2     Static No     No
qd-consultant                     LAG 179      192.168.9.254   Dynamic No     No
qd-guest                            LAG 178      192.168.8.254   Dynamic No     No
qd-test                              LAG 180      192.168.10.254 Dynamic No     No
service-port                         N/A N/A      0.0.0.0               DHCP    No     No
virtual                                 N/A N/A      192.0.2.1           Static No     No

Your configuration looks good except you should assign an ip address to the service port. Never leave that at 0.0.0.0. Change that to an ip address that is non routable in your network.
Now for your issue. Have you tried plugging in a laptop to the dmz switch in those vlans to see if it works wired. Since these are new subnets, are you sure they are being NAT'd to your public address. Check that first and let us know. The WLC should be able to ping the gateway and out into the Internet if things are setup right in the dmz.
Sent from my iPhone

WLC, mapping new dynamic interface to an already used port

This is my question
We have a multiple wlc deployment and a wlan which is running dhcp issues (scopes exhausted)
The main Wlan is mapped to a dynamic interface group (2 vlans), both vlans are mapped to a single physical port
adding a new dynamic interface (vlan) to the interface group is needed,
- a new dynamic interface will be created and mapped to the same physical port of the other two (3 vlans)
- the new interface will be addad to the interface group
the question is:
does this operation will require some network downtime (controller reboot,ap reboot... etc.) or will it be a seamless operation?
thank you

Does this mean, when utilizing an 802.1x WLAN in an AP Group, you can not dynamically assign an interface via radius because itw ill be ignored due to the AP Group settings? If so, that seems short sited to me?
AAA override get priority when AAA override and AP group is used. the debug client output should show site specific over-ride for AP group initially and once it goes into .1x auth it will return the overrided vlan.

Adding (dynamic) interfaces to WLC 2504 causes loss of network

I'm trying to add a new dynamic interface, that I will tie a specific WLAN to so that clients on that WLAN is in the correct vlan. After adding it I loose connectivity both to the main management address (10.99.0.60) and to the ip address of the dynamic interface (10.99.12.4). In fact, the dynamic interface address responds and prompts me to login, but after doing so all I get is a blank page. Here's the two interfaces pulled from the CLI - what am I doing wrong?
And oh, not adding an IP to the dynamic interface makes it impossible to use within a WLAN.
Interface Name................................... management
MAC Address...................................... c0:8c:60:c7:99:00
IP Address....................................... 10.99.0.60
IP Netmask....................................... 255.255.255.0
IP Gateway....................................... 10.99.0.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 31
Quarantine-vlan.................................. 0
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. 10.99.0.1
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... Yes
Guest Interface.................................. No
L2 Multicast..................................... Enabled
Interface Name................................... lan
MAC Address...................................... c0:8c:60:c7:99:04
IP Address....................................... 10.99.12.4
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 10.99.12.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 33
Quarantine-vlan.................................. 0
NAS-Identifier................................... mob-wlc
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. Unconfigured
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... No
Guest Interface.................................. No

So take a look at this. I have the dynamic interface used in wlan 2 (mytestssid as shown above). Now the management address, 10.99.0.60 cant be reached:
Nmap scan report for 10.99.0.60
Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
443/tcp filtered https
After removing wlan 2 and the dynamic interface, mgmt access starts to work again:
config wlan disable 2
config wlan delete wlan 2
config interface delete lan
Nmap scan report for 10.99.0.60
Host is up (0.0037s latency).
PORT STATE SERVICE
22/tcp open ssh
443/tcp open https
So... here's me adding the dynamic interface in cli AGAIN:
WLAN ID WLAN Profile Name / SSID Status Interface Name
1 someotherssid / someotherssid Enabled management
(Cisco Controller) config> interface create lan 33
(Cisco Controller) config> interface address dynamic-interface lan 10.99.12.4 255.255.252.0 10.99.12.1
(Cisco Controller) >config wlan disable 1
(Cisco Controller) >config wlan interface 1 lan
(Cisco Controller) >config wlan enable 1
Voila, management access lost again:
Nmap scan report for 10.99.0.60
Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
443/tcp filtered https
This time, there's no physical port assigned to the dynamic interface 'lan':
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
lan - 33 10.99.12.4 Dynamic No No
management 1 31 10.99.0.60 Static Yes No
virtual N/A N/A 1.1.1.1 Static No No
Adding that:
(Cisco Controller) config interface port lan 1
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
lan 1 33 10.99.12.4 Dynamic No No
Still no management access..:
Nmap scan report for 10.99.0.60
Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
443/tcp filtered https
For reference, the detailed interface config (which clearly shows that 'management' should be ap mgmt.. and dynamic interface 'lan' shouldn't (and thus shouldn't affect it - RIGHT?)):
Interface Name................................... lan
MAC Address...................................... c0:8c:60:c7:99:04
IP Address....................................... 10.99.12.4
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 10.99.12.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 33
Quarantine-vlan.................................. 0
NAS-Identifier................................... mob-wlc
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. Unconfigured
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
Interface Name................................... management
MAC Address...................................... c0:8c:60:c7:99:00
IP Address....................................... 10.99.0.60
IP Netmask....................................... 255.255.255.0
IP Gateway....................................... 10.99.0.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 31
Quarantine-vlan.................................. 0
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. 10.99.0.1
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... Yes
Guest Interface.................................. No
L2 Multicast..................................... Enabled
By the way, the switchport of my (C3560G) doesnt specifically allow some VLANs - meaning they allow all vlans:
interface GigabitEthernet0/28
description cisco_wlc
switchport trunk encapsulation dot1q
switchport mode trunk
And the vlans in question are present:
31 enet 100031 1500 - - - - - 0 0
32 enet 100032 1500 - - - - - 0 0
33 enet 100033 1500 - - - - - 0 0
34 enet 100034 1500 - - - - - 0 0

Configuring multiple dynamic interfaces in 5508

Hi,
I have 5508 controller where as ap-manager interface configuration is optional but since i have different topology at other end , I have 4507 configured with HSRP and i want to divide the AP traffic in both the switches therefore I will have to go ahead and configure multiple AP-manager interface and map with two different physical ports.
But I have challenge to configure multiple dynamic interfaces.
I want to create two wlans ( Internal wlan and guest wlan )
Internal WLAN : 192.168.10.0
default gateway : 192.168.10.1
internal DHCP server : 172.16.10.1
Physical Port : ............... ? which port to configure ? ( I have connectivity with port 1 & port 2 )
Guest WLAN : 192.168.20.0
Default gateway : 192.168.20.1
Internal DHCP server : 172.16.10.1
Physical port : ............... ? which port to configure ? ( I have connectivity with port 1 & port 2 )
I want to map it to multiple ports of dynamic interfaces for client traffic to physical ports.
how do i configure it ?

In adition to Nico's answer, I would go throught the detailed guide for the configuration of dynamic interfaces:
http://www.cisco.com/en/US/docs/wireless/controller/7.0/configuration/guide/c70mint.html#wp1167723.
HTH,
Tiago
If this helps you and/or answers your question please mark the question as "answered" and/or rate it, so other users can easily find it.

4402 WLC Dynamic Interfaces- More than 1 Gateway Possible?

I am configuring a guest access solution with multiple guest access gateways associated with a single VLAN. Each gateway will have its own /24 network, and obviously it own gateway. The interface configuration page requires a single gateway in the IP config section.
Does anyone know the purpose of this IP config?
Will command line config of the dynamic interface permit no gateway and a netmask big enough to encompass all gateways?
Thanks

Thanks for your replies.
2 Coova gateways each with web authentication and a dhcp server plugged into each layer2 vlan works great with IOS APs, which do no require IP config per (vlan) subinterface.
The objective is to loadbalance, provide redundancy and handle the total number of guests. The DHCP servers race to provide the client with IP config which then causes the client subsequently use that gateway.

Max # of dynamic interfaces on 4404 WLC

Can anyone tell me if there is a limit to how many dynamic interfaces I can create on a 4404 WLC?
I know that I can only have 16 SSIDs, so I have set up one SSID for my private network and am using AAA Override and configured my radius server to assign the different VLANs for each group. I have to create a dynamic interface for each individual VLAN and I just want to know if there is any kind of hard limit for the number of dynamic interfaces I can have so I don't run into a potential problem down the road.
TIA,
Deanna

I was able to verify that you only can create up to 513 dymanic interfaces. This of course does not include your management, ap-manager or VIP.
Hope this answers your question... it did for me... now I know!

Force WLAN client to renew ip on WLC with dynamic interfaces

Hi there
we would like to have a "two tier" authentication for the corporate WLAN clients:
Requirements
1. Machine Authentication
The client gets machine authenticated based on the machine account in the Active Directory with PEAP. At this stage, the client will get a IP from VLAN A. VLAN A has limited access to the corporate infrastructure (DNS, AD, some volumes / shares, and so on). The filtering is done with an IP access list on the layer 3 VLAN interface on the core switches.
2. User Authentication
The users logs in on the client and gets user authenticated based on his user account in the Active Directory with PEAP - only users with a valid Machine Access Restriction (MAR) are allowed to login. Now the client is moved to another VLAN B. VLAN B has full access to the corporate infrastructure, here is no IP access list.
Infrastructure
We have the following:
2 x WLC 5508 with 7.3.101.0
2 x ACS 5.3.0.40.6
Problem
Now we have the problem, that the Windows client sometimes takes up to 3 minutes to connect to the WLAN after the users loggs in. In the debug, I can see that this happens because the client is stuck in DHCP renewal:
1. After the machine has been authenticated it has an IP assigned from VLAN A. This works pretty well if the client gets rebooted.
2. If the user loggs in the first time after the reboot, the users gets connected within 10 seconds, what is pretty good. The client has now an IP in VLAN B.
3. Now the user logs out of Windows and I can see in the debug, that the client is putted into VLAN A (machine authentication) again, but the client still tries to DHCPREQUEST the IP address from VLAN B (user authentication). Because this request is sent out on the wrong dynamic interface on WLC, the DHCPREQUEST is not acknowleged an the client get stuck in this situation.
4. If the user or another users logs in again shortly after the logout, the client still tries to DHCPREQUEST the IP of VLAN B and now the "3 times DHCP failure on WLC" comes into play, because WLC thinks that the DHCP server is not reachable -> but it only does not answer a wrong DHCPREQUEST.
Question
On ISE there is a way to force the client to renew the DHCP address (via CoA, but this has its limitations too --> need to install Active X or Java applet). I think there is now way to force the client to renew its IP with ACS, but my question is, is there a workaround and are there any others, that maybe already solved this problem?
Alternative
If there is now way to bring this to work with two different VLAN's, I could try to realize this with only one VLAN. After the machine authentication I could apply a WLC ACL to restrict access to the corporate infrastructure. If the user authentication happens, I could "remove" this ACL to grant full access for this user / client. But I am still interested in the other solution ;-)
Thanks in advance for any advise and best regards
Dominic

Your second option is what you should do. Changing the vlan on a client that already has an IP address especially on wireless will not know it has been put in a different vlan and that's why it breaks. If There was a way to change the vlan and send something to the WLC to disassociate the client, that might work.
Sent from Cisco Technical Support iPhone App

Dynamic Interfaces to a WLAN in an AP Group?

Running 7.2.110.0 code.
Question:
I had been working with an EAP WLAN testing for awhile in preperation for a project and had it work well with a single SSID and upon login and authentication, an attribute was passed by ACS to the WLC to point the client o a certain interface configured on the controller... pretty simple setup and seemed to work well.
I stepped away from that project for a bit as it was in a holding pattern and moved onto my wireless upgrades, replacing AP's and surveying and installing new controllers. Upon installing new controllers I decided that I would start using AP Groups more often as to keep things clean and created one with the basic required SSIDs, including the new EAP SSID (call it WLANEAP) and I moved most of my AP's to this AP group so that I didn't see all the other ones I was creating and using for other things currently under the default group provided by the wlc. Again, no issues, until today.
I was trying to get my WLANEAP network running again as I decided to use it for another implementation and I knew I had it handy and running, however.. not so much. I've tried and tried but can not get the laptop to get an ip out from the interface provided by ACS. I did a client debug, and saw:
Applying site-specific Local Bridging override for station 08:11:96:5a:9b:0c - vapId 7, site 'BasicInstall-RW', interface 'vlan20'
So, in seeing this I realized that in my AP Group I had to map it to an interface, vlan20 in this case which has no routing on it so no dhcp or anything.
Does this mean, when utilizing an 802.1x WLAN in an AP Group, you can not dynamically assign an interface via radius because itw ill be ignored due to the AP Group settings? If so, that seems short sited to me?

Does this mean, when utilizing an 802.1x WLAN in an AP Group, you can not dynamically assign an interface via radius because itw ill be ignored due to the AP Group settings? If so, that seems short sited to me?
AAA override get priority when AAA override and AP group is used. the debug client output should show site specific over-ride for AP group initially and once it goes into .1x auth it will return the overrided vlan.

WLC DHCP & VLAN issue

Hello,
I configured on my WLC 5508 a new Interface & VLAN . The WLC act as DHCP Proxy.
I enabled also Flex Connect local switching . Then I removed on my Switch under the
VLAN settings the IP helper because as I know the WLC act as IP helper.
What is still not clear for me is where I have to insert the DHCP server adress
on my WLC controller. Must I insert the DHCP server IP under my management Interface
or where I have to enter the DHCP server IP.
I tested this with the new VLAN interface and added the DHCP server IP but without success.
Thanks for help.
Regards

Hi,
I addedd an IP helper under the L3 configuration without success. Same, WLAN clients don´t get an IP .
I configured following:
add a new VLAN into the switch with layer 3 and addedd IP helper on the L3 switch.
add the VLAN into the WLC controller wth a new SSID and Interface for this VLAN.
Enabled Flex Connect under the SSID.
Done a test with a wired client direct on a switch without problems.
If I try to connect over the WLAN then the client don´t get an IP.
Regards

WLC DHCP Settings - Under Dynamic Interface configuration

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