MAC-Based VLAN Assignment

Hi everyone,
We have switches configured with 5 VLANs, and would like these switches to
authenticate to a RADIUS server with a client's MAC address. Based on the
client's MAC address, need the RADIUS server to tell the switches which VLAN
to use for the client's port.
No problems with configuring the switch - it's the RADIUS side we're having
trouble with. We have BorderManager 3.8 running on NetWare 6.5 with the
RADIUS modules installed - is there a way to configure the RADIUS server
with a MAC Address to VLAN assignment table? Have tried to add a DAS object
through ConsoleOne, but are unsure how to configure it further.
Any assistance would be greatly appreciated.
Thanks,
Julian

I'm not sure, but I don't think that is within the capability of the
RADIUS components. Also, what's to stop someone from faking another
mac address? That's usually quite easy to do.
Craig Johnson
Novell Support Connection SysOp
*** For a current patch list, tips, handy files and books on
BorderManager, go to http://www.craigjconsulting.com ***

Similar Messages

Dynamic VLAN assignment and Layer 3 switching on 300 series

I have a SG300-28P switch. I just read in the Administration Guide that, when in Layer 3 mode, the switch doesn't support MAC-based VLAN or Dynamic VLAN Assignment.
So, in order to assign a client to a VLAN based on their MAC or based on the response of a RADIUS server, we have to disable layer 3 features. Without layer 3 switching, the switch is unable to act as a default gateway and forward packets between VLANs. As a result, the VLANs can't communicate in any way, or access the internet, unless a separate router is connected to every VLAN. Right?
I'm new to VLAN configuration and layer 3 switching so I wanted to check my understanding. Doesn't this limitation significantly reduce the usefulness of the DVA feature?
I may well be confused and missing something regarding how this is typically used..

Hello Glenn,
Your concept about packet forwarding is correct. With a layer 2 switch, there must be something directing traffic with multiple subnets for intervlan communication or something that provides an IP route to give the request a path back for the request.
The usefulness for the DVA feature, is not particularly limited to the switch as the switch will correctly assign the VLAN for you, as VS the L3 switch mode, you're dealing with IP addresses. In any scenario, you're going to require a router to get to the internet since the switch does not support NAT.
Additionally, if you're router does not support VLAN, the L3 switch feature would still be the solution since you should be able to make a static route pointing back to the switch to allow any subnet to traverse the single media. It would still beg the question, how to assign VLAN dynamically.
The answer, although (in my opinion is terrible) would be GVRP. But, this application would require ALL of your network cards to be GVRP Enable / Capable which most likely is not the scenario for you (or most anyone else for that matter).

Dynamic VLAN Assignment with RADIUS Server and Aironet Access Points

Hi Guys,
I would like to go for "Dynamic VLAN Assignment with RADIUS Server and Aironet Access Points 1300". I want the AP to broadcast only 1 SSID. The client find the SSID ->put in his user credential->Raudius athentication->assign him to an specific vlan based on his groupship.
The problem here is that I don't have a AP controller but only configurable Aironet Access Points 1300. I can connect to the radius server, but I am not sure how to confirgure the AP's port, radio port, vlan and SSID.
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml#switch
I go through some references:
3.5 RADIUS-Based VLAN Access Control
As discussed earlier, each SSID is mapped to a default VLAN-ID on the wired side. The IT administrator may wish to impose back end (such as RADIUS)-based VLAN access control using 802.1X or MAC address authentication mechanisms. For example, if the WLAN is set up such that all VLANs use 802.1X and similar encryption mechanisms for WLAN user access, then a user can "hop" from one VLAN to another by simply changing the SSID and successfully authenticating to the access point (using 802.1X). This may not be preferred if the WLAN user is confined to a particular VLAN.
There are two different ways to implement RADIUS-based VLAN access control features:
1. RADIUS-based SSID access control: Upon successful 802.1X or MAC address authentication, the RADIUS server passes back the allowed SSID list for the WLAN user to the access point or bridge. If the user used an SSID on the allowed SSID list, then the user is allowed to associate to the WLAN. Otherwise, the user is disassociated from the access point or bridge.
2. RADIUS-based VLAN assignment: Upon successful 802.1X or MAC address authentication, the RADIUS server assigns the user to a predetermined VLAN-ID on the wired side. The SSID used for WLAN access doesn't matter because the user is always assigned to this predetermined VLAN-ID.
extract from: Wireless Virtual LAN Deployment Guide
http://www.cisco.com/en/US/products/hw/wireless/ps430/prod_technical_reference09186a00801444a1.html
==============================================================
Dynamic VLAN Assignment with RADIUS Server and Wireless LAN Controller Configuration Example
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml#switch
==============================================================
Controller: Wireless Domain Services Configuration
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_example09186a00801c951f.shtml
Any help on this issue is appreicated.
Thanks.

I'm not sure if the Autonomous APs have the option for AAA Override. On the WLC, I can go into the BSSID, Security, Advanced, and there's a checkbox that I would check to allow a Radius server to send back the VLAN.
I did a little research and it looks like the 1300 may give this option but instead is defined as "VLAN Override". I've found the release notes for 12.3(7)JA5 (not sure what version you're running) that give mention and a link to configuring EAP on page 4: http://www.ciscosystems.ch/en/US/docs/wireless/access_point/1300/release/notes/o37ja5rn.pdf
Hope this helps

802.1X for wired environments using Radius/ACS for Dynamic Vlan Assignment

Currently Being Moderated
802.1X for wired environments using Radius/ACS for Dynamic Vlan Assignment
Could someone please provide me with a simplest set of configuration steps to fire up Radius in ACS and 802.1X for dynamic vlan assignment. The objective is to roll out NAC L2 OOB using the 802.1X method for dymamic vlan assignments.
If possible show:
1. ACS/Radius Configurations.
2. End User Switch Configurations
Variables:
Switch A
MAC Address aaaa.bbbb.cccc     Vlan 10
            bbbb.cccc.dddd     Vlan 20
Also, if someone posts the Pros and Cons of using Radius/ACS/802.1X for Dynamic Vlan Assignments.
Other technology sets that can be used for Dynamic Vlan assignment EXCEPT from deprecated/obsolete VMPS.
Thanks in advance. .

Hi Guys,
    Hmmm, well if your just looking for Mac based authentication the good news is that is very easy. Just set create your Radius server, ACS, FreeRadius, Steelbelted radius etc. Then create user with the name of the Mac address, in other words if the mac address is 0012.0021.1122 the the name would be 001200211122 and the password would be the mac address. Then you set the vlan and tunnel stuff, like so tunnel-Type would be vlan, Tunnel-medium would be 802 and Tunnel-Private-Group-ID is the name of the vlan(not the vlan number)
   So for the Cisco ACS 4.x you would create a user as specified above, fill in all the password boxes with MAC address, I believe the mac has to be all lower case in the name and the password. Then check the Separate(Chap/MS-Chap/ARAP) box. Then you pick the group the machine belongs to, the group is the part that defines what vlan it is on.
   Before you create the user, create the group with info I wrote above and in addition specify the Service-Type as Authenticate Only.
    Freeradius is a bit harder to configure the specifics and I am just now testing a freeradius server so I do not know the process for Machine authentication.
    If, however, you are trying to authenticate a user that gets a bit trickier and is not so straight forward.

Dynamic Vlan Assignment

All,
I'm looking for a means to secure interfaces configured in an admin vlan.
In an ideal world the interface would be configured with the admin vlan if the device is somehow identified (not necessarily authenticated). In the event that the device isn't identified it fails back to a standard device vlan.
I've had a look at VMPS but understand that this is a dying feature and would be a poor idea to implement it. The alternative appears to be passing a vlan tag as a RADIUS attribute.
I'd be keen to know if anybody can make any suggestions as to how I could implement this? Ideally it needs to be simple with fewer complexities to go wrong.
To add to this, devices are hanging off of IP phones which aren't Cisco.
Any help would be appreciated.
Neil

Hi Neil,
To add to what Tarik said, I would also describe that can be used with whatever radius server you have.
in ISE (Tarik, correct me if I am wrong) the devices and getting profiled automatically depending on many attributes and the device can be distinguished if it is an ip phone, laptop, ipad...etc. and based on that the VLAN assignmed is applied.
With other radius servers you need to statically specify what VLANs should the users be put in. The VLAN assignment is being done based on username the user is using OR the mac address the device provides.
Two weeks ago I implemented the same scenario using cisco ACS 5.3 radius server where users have multiple AD users and some other devices (ip phones, network printers...etc) and the VLAN assignment happens based on the AD group or the type of the device.
I manually added the mac addresses of priners in a group, ip phones in different group..etc. and I configured the ACS to assign the VLAN based on that gorup. with ISE what I know is it detects the device type automatically (you have to configure a profile for device types though) and based on that it assigns a VLAN.
You need to notice one thing though, if you are configuring the switch for the dot1x authentication you need to add a configuraiton in the radius in order to tell the switch to use teh VOICE vlan (not DATA vlan) for the phones. Otherwise the phone will use DATA VLAN when authenticated and not the voice VLAN which makes only one device; the phone or the PC attached to it, to work.
If you use cisco switches, you need to return to cisco-av-pair attribute with value "device-traffic-class=voice" to the phones when they authenticate. I used this with non-cisco phones and it works like a charm.
Let us know if there is anything else you need to know about dynamic vlan assignment.
I hope that was useful to you.
Amjad
Rating useful replies is more useful than saying "Thank you"

802.1X and automatic vlan assignment

Hello,
I'm testing a 802.1X infrastructure :
Switch : Try with Netgear Prosafe GS728TPS and Cisco SF300
Radius Server : Microsoft NPS
DHCP Relay for address assignement by Vlan
I have created some policies with simple authentication for testing (MSCHAP V2) and vlan assignement or not (depend on Active Directory Group).
All work fine on a Windows 7 Pro. The user 1 is authenticated whithout vlan and the user 2 is authenticated with a vlan.
The DHCP works fine and the 2 users have an IP.
When I try on MAC OS X (ver. 10.7.2 and ver. 10.9.2) the user 1 (whithout vlan) work fine. I have an IP and access to the LAN. But the user 2 (with vlan) don't work. The Mac don't get an IP and I'm not on the VLAN. If i push manually an IP of the vlan, I have no access to the VLAN.
There are some specifics parameters to add for enable vlan on Mac OS X ?
Thanks for reply
Ben

Edit : It's for wired connections

Mobility Anchor and AAA Overide VLAN Assignment

Hello,
I read some document 2 years ago that dynamic VLAN assignment was not possible with Anchored WLANs. Please I would like to know if this is now possible. The network setup would be as follows:
1. Foreign and Anchor WLC (5508) with single SSID for both guest and internal users
2. Cisco ISE 1.2 performing AAA override with VLAN tag based on AD group. Guest will go to VLAN for guest after web authentication.
Please a speedy response would be helpful.

Hi grabonlee,
We have been running an anchor with VLAN override for out Guest services. Works well. VLAN needs to be defined on both the anchor and foreign. We are running 7.6.120 code.

Dynamic VLAN assignment on SG300

Cisco documentation states that dynamic vlan assignment via RADIUS should provide the following IETF values:
The RADIUS user attributes used for the VLAN ID assignment are:
IETF 64 (Tunnel Type)—Set this to VLAN.
IETF 65 (Tunnel Medium Type)—Set this to 802
IETF 81 (Tunnel Private Group ID)—Set this to VLAN ID
I have done so with an Aruba Clearpass RADIUS server - but the Access-Accept message being sent below:
Radius:IETF:Tunnel-Medium-Type    6
Radius:IETF:Tunnel-Private-Group-Id    4
Radius:IETF:Tunnel-Type    13
is being received by the SG300 in some way that's not being interpreted correctly. Log files indicate that the IETF values are not what is expected:
07-Aug-2014 18:58:41 :%SEC-W-SUPPLICANTUNAUTHORIZED: username teststudent with MAC 00:11:25:d8:42:83 was rejected on port gi2 because Radius accept message does not contain VLAN ID
07-Aug-2014 18:58:41 :%AAAEAP-W-RADIUSREPLY: Invalid attribute 65 ignored - tag should be 0
07-Aug-2014 18:58:41 :%AAAEAP-W-RADIUSREPLY: Invalid attribute 64 ignored - tag should be 0
Is there something I'm missing here? These same values sent by the Clearpass RADIUS server are working for other switches such as Extreme and Brocade.
Thanks,
Aaron

Hi Aleksandra,
Here are the values from a packet capture of the Access-Accept message:

Dynamic VLAN assignment with WLC and ACS for

Currently, using our autonomous APs and ACS, our users get separate VLANs per building based on their security level (students or staff). Basically, the student VLAN in one building is different from that of the student VLANs in other buildings on campus. Currently, we do this by filling the Tunnel-Private-Group-ID IETF RADIUS attribute with the VLAN name. This all works because each individual AP can map VLAN names to different VLANs like this:
dot11 vlan-name STUDENT vlan 2903
dot11 vlan-name FACSTAF vlan 2905
As we are working on our WiSM deployment, we see that the document below shows how to do the dynamic VLAN assignment on our WLAN controllers:
http://www.cisco.com/en/US/customer/products/sw/secursw/ps2086/products_configuration_example09186a00808c9bd1.shtml
However, we haven't figured out if it's possible to still provide our users with different VLANs for each building they're in.
With the instructions above, it looks like ACS uses a Cisco RADIUS Attribute to indicate the Air-Interface-Name, mapping an ACS/AD group to a single WLC interface which can only have one VLAN/subnet associated with it.
Does anybody know if what we're trying to accomplish is possible, or if we're really stuck with only one VLAN/subnet per mapped ACS group?

We only have the one WiSM for all of campus, so it's handling everything. This Cisco docs do indicate how to put differnet users in different Vlans, but we don't currently see a way to also put them in different subnets per building.
This being the case, any suggestions on how best to handle more than a Class C subnet's worth of users? Should we just subnet larger than Class C, or is there a more elegant way of handling this?

Flexconnect dynamic VLAN assignment doubt

Hi, all,
I am trying to understand how FlexConnect with dynamic VLAN assignment works. We have the need to dynamically put people in different VLANs based on their AD groups (all employees use the same SSID), I can understand that in traditional CAPWAP mode, AP just tunnels all traffic to WLC, WLC is the authenticator and it knows what users' identities are and can encapsulate user traffic to different VLANs before send the traffic to the switch it connects. Here is the part I don't understand:
1) If APs are operating in Flexconnect mode (APs are trunking to switches), how does each AP know what VLAN tag to put a specific user traffic on? AP is not authenticator, it knows nothing about associated client's AD identify. How does WLC convey the dynamical VLAN information to APs?
2) I want to eliminate WLCs in remote offices by letting all remote office APs join HQ WLC with FlexConnect mode, I can keep the same VLAN mapping scheme in remote office switching environment, in some offices I want to do local authentication (Domain controller + Radius Server), looks like I can specify Radius server in FlexConnect group, in this case will APs become authenticator? Since Radius clients have to be explicitly configured on NPS/Radius server side, does this means I have to statically configure each AP's IP?
3) I have over a dozen APs in HQ which are operating at FlexConnect mode, but the SSID's "local central authentication" checkbox is not checked, if I want to have local authentication in remote office, seems that I have to turn on "local authentication" on this SSID, does that mean I have to add each and everyone of those HQ APs to Radius/NPS server client list?
Thanks,

Hi ,
1) Aps knows about Vlans as we can define them inside the Flex connect groups. This is the same way we define flex connect ACLs which are pushed to the Flex APs and are returned by the Radius server later on.
2) If you are going for Central authentication + local switching ....WLCs will always act like central authenticator and would talk to the radius server. If you have some radius servers at the local site and you want them to use without going through the central authentication..you can do that using (local authentication + local switching). Yes, In this case AP will be authenticator and would be AAA client to be added in the Radius server.
3)yes ,,you are correct. If you want that your AP should do authentication and talk to the local radius server at the site , it has to be added in the Radius server.
Regards
Dhiresh
**Please rate helpful posts**

VLAN assignment from ACS not applied

WLC 4402 5.2.157.0
ACS Express 5.0.0.18
We have an issue where the VLAN assigned on the ACS isn't applied on the 4402 WLC.
We have 'Allow AAA Override' checked on the WLAN, the QoS is overridden to bronze properly, but the VLAN stays at 0 and the interface at management. The VLAN interface is configured on the WLC.
On the ACS the following are configured for the RADIUS response:
Radius-IETF Tunnel-Medium-Type 802
Radius-IETF Tunnel-Type VLAN
Radius-IETF Tunnel-Private-Group-ID 44
Cisco Airespace Airespace-QoS-Level Bronze
The accounting log shows:
Wed, 04 Feb 2009 09:50:02
User-Name = guest
NAS-IP-Address = 10.30.1.2
NAS-Port = 1
Framed-IP-Address = 10.30.1.12
Called-Station-Id = 10.30.1.2
Calling-Station-Id = 10.30.1.12
NAS-Identifier = Cisco4402WLC
Acct-Status-Type = Start
Acct-Session-Id = 4989b927/00:1a:73:ed:bf:ca/2
Acct-Authentic = RADIUS
Airespace-WLAN-Id = 2
Thanks for any help or advice you can provide to troubleshoot this issue.
-Brian

From the Clients -> Details screen on the WLC...
CLIENT PROPERTIES
MAC Address 00:1a:73:ed:bf:ca
IP Address 10.30.1.12
Client Type Regular
User Name guest
Port Number 1
Interface management
VLAN ID 0
CCX Version CCXv4
E2E Version Not Supported
Mobility Role Local
Mobility Peer IP Address N/A
Policy Manager State RUN
Mirror Mode Disable
Management Frame Protection No
SECURITY INFORMATION
Security Policy Completed Yes
Policy Type N/A
Encryption Cipher None
EAP Type N/A
NAC State Access
QUALITY OF SERVICE PROPERTIES
WMM State Enabled
U-APSD Support Disabled
QoS Level Bronze
Diff Serv Code Point (DSCP) disabled
802.1p Tag disabled
Average Data Rate disabled
Average Real-Time Rate disabled
Burst Data Rate disabled
Burst Real-Time Rate disabled

HREAP and Dynamic VLAN assignment (MS NPS)

Hi All
Just a quick rundown of what I am trying to achieve.
We have a Cisco 5508 WLC (running AIR-CT5500-K9-7-0-116-0.aes). At the moment the WLC is controlling only 1 AP (Cisco 1142N LWAP). I want this AP to be placed at a remote site, and users that authenticate via the RADIUS (MS Windows 2008 NPS) server must be assigned their respective VLANs based on the Active Directory groups they belong to (staff, student, or guest).
The AP and dynamic VLAN assignment works 100% if the AP is in local mode. Authentication works, and dynamic VLAN assignment works. As soon as you change the AP to HREAP mode, dynamic VLAN assignment stops working, and the client gets assigned an IP of whatever VLAN is assigned to the SSID under the HREAP tab. Allow AAA Override is enabled on the main SSID that I am broadcasting.
I have read in some of the discussions that HREAP does not support dynamic VLAN assignment, but I haven't seen why this is not supported. Is this true with the latest version of WLC software as well? I cannot see why local traffic destined for a local resource must be sent via a WAN link to the controller, and then back over the WAN link again. This seems very inefficient.
Is there anybody that can confirm if this is in fact an HREAP limitation, and why (if so) it is a limitation, please? Any info would be much appreciated.
Regards
Connie

Do you perhaps know if there are plans for this limitation being addressed in the near future?
We are looking to deploy wireless from end-to-end in all 6 of our sites, and you biggest competitor was penalized because they do not support this feature. It seems we're going to have to apply the same penalty in this respect to Cisco as well.
Thanks for the feedback, though!
Regards
Connie

802.1x dynamic vlan assignment using ACS 4.2

Hi
we have 10 switches 2960 configured with 802.1x authentication against ACS server 4.2.
we have 2 vlans configured on the switches for administrator and endusers. the end user vlan id is 10 and the administartor vlan is is 100.
we need to apply the following scenario, if the enduser PC - that is connected to vlan 10 - has an issue and the administrator will login to the PC with the administrator account to fix that issue, the switch should dynamically reconfigure the port with the administrator vlan ( 100 ) .
is the above scenario doable using dot1x with the ACS server?
waiting your replies
Mohamed

Hi,
I have the following scenario
2 bulidings with multiple floor
Each floor should be in different VLAN.
The network should be authenticated with 802.1x and each switch port should be assigned with dynamic VLAN from ACS.
Each
user should be able to connect and roam around between any building.
when ever a user is connecting his laptop to any floor, he should be
made part of that respective vlan. It is not requred to have the same
IP rage to be allocated, but the dynamic VLAN should be based on the
switch port location.
Can
I configure ACS in such a way that, the ACS will allocate dynamic VLAN
for every 802.1x authentication based on the Network Device Group.
Please refer the attached diagram
Hi,
Check out the below link for your requirement for dynamic vlan assignement using ACS
http://www.ciscosystems.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml
Hope to Help !!
Ganesh.H
Remember to rate the helpful post

802.1x Dynamic Vlan assignment using ACS

Hi,
I have the following scenario
2 bulidings with multiple floor
Each floor should be in different VLAN.
The network should be authenticated with 802.1x and each switch port should be assigned with dynamic VLAN from ACS.
Each user should be able to connect and roam around between any building. when ever a user is connecting his laptop to any floor, he should be made part of that respective vlan. It is not requred to have the same IP rage to be allocated, but the dynamic VLAN should be based on the switch port location.
Can I configure ACS in such a way that, the ACS will allocate dynamic VLAN for every 802.1x authentication based on the Network Device Group. Please refer the attached diagram

Hi,
I have the following scenario
2 bulidings with multiple floor
Each floor should be in different VLAN.
The network should be authenticated with 802.1x and each switch port should be assigned with dynamic VLAN from ACS.
Each
user should be able to connect and roam around between any building.
when ever a user is connecting his laptop to any floor, he should be
made part of that respective vlan. It is not requred to have the same
IP rage to be allocated, but the dynamic VLAN should be based on the
switch port location.
Can
I configure ACS in such a way that, the ACS will allocate dynamic VLAN
for every 802.1x authentication based on the Network Device Group.
Please refer the attached diagram
Hi,
Check out the below link for your requirement for dynamic vlan assignement using ACS
http://www.ciscosystems.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml
Hope to Help !!
Ganesh.H
Remember to rate the helpful post

WoL over 802.1X with Vlan Assignement

Hello
I have a switch 3560, and an ACS v4
In phase of test i have an infrastructure with 802.1X PEAP with automatic VLAN assignation by the ACS according to the Machine.
My question is:
it possible to implement Wake One Lan on 802.1x with a assigantion of vlan not statics (i.e. without use of command Switchport access vlan XXX)
PS: if I do in statics the VLAN on a port Wake one Lan work without Pb with 802.1X

Ok, on interface 0/19 :
Switchport mode access
speed 100
duplex Full
dot1x pae authenticator
dot1x port-control auto
dot1x control-direction in
spanning-tree portfast
The software use is like "wolcmd" with configuration of
MAC address of the PC
IP of the PC (give by DHCP reservation)
Subnet mask
Remote port Number : 7
The authentication on ACS work fine and on ACS whe have this field
[064] Tunnel-Type
value : VLAN
[065] Tunnel-Medium-Type
Value : 802.
[Tunnel-Private-Group-ID]
Value : 69
In fact, the only difference between config is assignation static or dynamic of VLAN
I don't know if this what you wan't
thanks

MAC-Based VLAN Assignment

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