Binding multiple VLANs to single SSID on WLC

I have a building with over 4000 users and would like to bind multiple VLANs for user access to a single SSID in WLC. Can this be done? I would rather not have 4000 wireless users on a single VLAN.

the question is tough. You can not use the SSID in on AP for multiple vlans. Once you assign the AP to the vlan then you will have to make all traffic in the vlan. With that being said. you could assign the AP's to specific vlans, but if you roam from one vlan to another you will have problems at L3. But you can use WDS to make that happen.
Here are a couple of links tha might help.
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00804d4421.shtml
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_guide_chapter09186a0080184ace.html

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Multiple VLAN's, one SSID

I'm getting to the point where my campus wireless network is growing past the subnet size that I'm comfortable dealing with. I have a WiSM and WCS and am running the newest IOS on each. Is there any way to use multiple VLAN's on one campus-wide SSID?
Or, can I put the same SSID on the two controllers and map it to two separate VLAN's without causing roaming issues?
Thanks,
Eric

Hi Eric,
Yes we can do this and this feature is called AP Grouping on WLC... Here is the configuration example to do the same..
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008073c723.shtml
Regards
Surendra

WLC 4402 assign multiple VLANs to one SSID

Is it possible to have one broadcasting SSID but clients seperated by, lets say say 7 different vlans in the WLC? For example- each floor would be seperated by its own vlan and dchp pool, but they all connect to one SSID in the controller. From what I just read it seems that each vlan would be assigned its own SSID?

For anyone needing further info see here:
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008073c723.shtml

Multiple VLANs on same SSID

Hello community! I'd like some experts to take a look at my solution here and see if I'm taking the correct approach.
I have the following scnerio:
WLC 5508 7.0.116.0
Physical ports configured for LAG
AIR-LAP1142N-A-K9
Multiple Buildings
Each Building has it's own WiFi VLAN/Subnet
All buildings share SSID
WiFi Clients should be assigned the correct subnet/vlan based on the building they are in
I've done the following on my 5508:
Setup an interface for each VLAN/Subnet
Setup an Interface group and added interfaces from step 1
Created WLAN (SSID) and assigned it to the interface group from step 2
Created AP Groups for each Building
Assigned approperiate interface from step 1 to each AP Group
Assigned APs from each building to AP Groups
Does this look like the correct configuration for my goal? I set this up using information from this article though it appears to be old and they aren't using LAG in their setup.

Depends... is your building connected via layer 2 or layer 3. If layer 3, you need to setup the access point in your other building in h-reap mode and setup you ssid to h-reap local switching. This will allow you to map the ssid to the correct vlan at that location.
Thanks,
Scott
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Route multiple VLANs through single port

Hello,
I have a series of 3560g's setup. I am going to be connecting two of them between different offices via a fiber cable. I use 3 VLANs and am unable to find a way to make this work.
Each site will have 5 switches. 2 for VLAN1, 2 for VLAN2, and one that has VLAN1-3 on it. Is it possible to link the two sites together with the single cable in a manner that allows the two connected to route the 3 VLANs through this one cable?

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Posting
Just to clarify, only the ports, on the link between the switches, are defined as trunk ports.
By default, each switch will send all its defined VLANs to the trunk port. If both switches have the same VLAN, those VLANs will become logically one.

Multiple Vlans Per SSID

Hi
We are just putting in a new Controller - 5500 type
We are using a WCS .
Someone has raised the issue of whether we can have multiple vlans
per SSID - as otherwise we may have very large broadcast domains
due to the overall design being to have Maybe 3 SSIDs
Guest
Staff
Engineering
I think in SWAN we could get away with dynamic vlans.
We would like to have multiple vlans in each SSID to avoid the above.
Can we do this in the new setup.
Kind Regards
Steve

Hi Steve,
yes it works just the same.
Enable AAA override on the controller and have interfaces configured for each vlan. Then the ACS can simply push the vlan depending on the user authentication. Users are then split in separate vlans.
Another way of doing is to group APs. You can have a group of APs serving SSID Guest in vlan 1, Employee in vlan 2 and another group of APs serving the same SSIDs but in vlan 3 and 4. It's "per-user" vlan load balancing or "geographic" vlan load balancing.
However, broadcast domains should not be a major concern in wireless as broadcasts are blocked by default. The WLC will proxy for ARP and DHCP.
Regards,
Nicolas

Mapping Multiple VLANs to Multiple SSIDs as one-one in WLC 5508 via H-REAP?

Hi All,
Can anyone please show me how to map a SSID/WLAN ID to a local vlan of a LAP in WLC 5508 using H-REAP local switched? The reason of doing this is to separate Data subnet/traffic from Voice as currently all 7925 handsets using same SSID as PCs. I would like to create two VLANs on APs and map them to two SSIDs. I could not see any option in WLC5508 to do this. Also when I change the AP mode from H-REAP to local and configuring sub interface using dot1q on the interface Gi0 then unable write running-config to startup-config because I get NVRAM Verification Failed as WLC protects any local changes on any registered LAP at NVRAM.
Your help is much appreciated.

Mehdi:
I am talking about HREAP groups, not AP groups.
You can not achieve what you want if you are using the same SSID on same AP with only a WLC (same AP with same SSID is mapped to different VLANs). You may need a radius server to dynamically assign a VLAN to the clients if you are using same SSID for data and voice.
If you are using different SSIDs for voice and data, you can map each SSID to its corresponding VLAN on the remote site using the VLAN mapping option under HREAP tab in the AP config page.
You can not configure the AP from its console. Lightweight APs can only be configured from the controller. (a few exceptions are available that do not apply here) .
HTH
Amjad
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Is it possible to configure 2 SSIDs without using multiple VLANs?

I am trying to set up a 1231G to allow normal users to connect using WEP and visitors to connect with no encryption in guest mode. Using one SSID, I can get one or the other to work using the guest-mode command on the SSID, but have the problem that WEP mandatory or optional on the radio interface disables either the normal user or the guest. If I set up 2 separate SSIDs for each of these user groups is it necessary to assign a separate VLAN for each to make this work? The AP is on a network that is not trunked.
Thanks for any help or direction you can give me.
--Sara

Hi Sara,
Hopefully the attached docs will answer your question:
Cisco Aironet 1200 Series
Using VLANs with Cisco Aironet Wireless Equipment
Deprecated versions of Cisco Aironet software permit binding multiple SSIDs to one VLAN. Current versions do not.
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_example09186a00801d0815.shtml#
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, 12.2(15)JA
Configuring Multiple SSIDs
vlan vlan-id
(Optional) Assign the SSID to a VLAN on your network. Client devices that associate using the SSID are grouped into this VLAN. You can assign only one SSID to a VLAN.
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_guide_chapter09186a00802085c4.html
Also this answer from Cisco Aironet 1200 Series FAQ;
Q. How many service set identifiers (SSIDs) can you have per VLAN?
A. You can have only one SSID per VLAN. The use of multiple SSIDs over a single VLAN is not supported with Aironet APs.
Hope this helps! (sorry to be the bearer of bad news)
Rob
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Scenario for single WLAN to multiple VLANs

Hi there,
I read from this forum some discussion about the WLC VLAN Select feature.
http://www.cisco.com/image/gif/paws/113465/vlan-select-dg-00.pdf
I see that you can use this feature to have multiple VLANS (interfaces) to map to the same WLAN (SSID).
What I try to learn is under what scenarios would people need to have mutliple vlan mapped to single SSID?
In my environment, I have 50+ AP int he campus on 20+ Cisco 4500 switches. I have single WLAN and it is mapped to one subnet. All wireless users would be on that subnets, whereas wired users are on 20+ subnets of their own.
Can someone help me to see under what scenarior (or requirement) that I would want to have multiple vlans mapped to single SSID?
Thanks.

having a large number of users in single subnet is not the best in all designs, since you will have a large single broadcast domain which is a true disaster with dense networks. If you the company policy states that we need only one single ssid
for the whole employees within the company, it doesn't make sense to have them all on the same subnet.
A lot of options are available to overcome such issues :
for example, we might have AP groups feature , dynamic vlan assignment given that we have radius server in place, and vlan pooling.
It might not be feasible to have RADIUS server all the time, and AP groups might be kind of administrtive overhead as well as it might induce a lot of issues when aps fail over from controller to controller --> Vlan select is a good soultion considering the previously mentioned reasons.
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Flex Connect Across Multiple VLANS same SSID

I just need to find that if we have flex connect setup for differnet vlans using single controller, will roaming works when client connects to AP in a differnet VLAN but using same SSID.
Example below:
1) Client connects to AP on specific SSID mapped to VLAN 100, get an IP address ..all good at this point
2) Client walks and connects to a differnet AP on same SSID but mapped to VLAN 200...at this point I observe client doesnt get a new IP address in fact it retain IP from step-1 and there is no connectivity
3) Client walks back to first AP and connectivity is restored
Why in step-2 client doesnt gets a new IP from VLAN 200 even when it shows connected to AP.

Just to add to Rasika.... L3 isn't supported....I just ran into this a few days ago.... clients should request another dhcp when roaming to another FlexConnect AP that is mapped to a different VLAN. The issue is, that some clients don't try to renew their dhcp address and gets stuck with the default 169.x.x.x. I see this with Apple devices in general and what we are going to do is get rid of the multiple vlan setup (vlan per floor) and create a bigger vlan that the SSID will be mapped to.
Thanks,
Scott
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I have multiple SSID, but want users of a single SSID to be redirected to a HTTP or HTTPS URL (LAN SERVER for authentication)

Hi team,
I have multiple SSID, but want users of a single SSID to be redirected to a HTTP or HTTPS URL (LAN SERVER for authentication)
I am very curious and it is important. I want to see how to achieve this with CISCO WLC !!!

http://10.229.3.99/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=10.229.3.99/login.html?switch_url=https://1.1.1.1/login.html&ap_mac=e8:40:40:ad:cc:80&wlan=MO-GUEST&redirect=www.geo.tv/
I wanted if someone connects to WLAN "MO-GUEST" automatically the user should be redirected to http://10.229.3.99/login.html and once authenticated by 10.229.3.99 , he/she should be allowed to access anything as normal. [ actually i just want automatic url redirection for the first time for the user of wlan "MO-GUEST"
waiting expert opinions.

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Multiple Vlans on a single port.

hi,
Can i configure single port with multiple vlans on L2 2950 switch, if yes then what are the commands.
Thanks,
Vishal D.

Paresh,
i think i have not quoted the question properly.
see by doing 'switchport mode trunk' it will flow the traffic of all vlan right.
but if i want to give access of selected vlans then what to do,
i have tried the command 'switchport trunk allowed vlan 1,2,3'
do i have to give encapsulation on that port, but on 2950 encap cannot be configured.
now can u tell me wht is possible to do.
Thanks for ur reply.
Vishal.

Multiple Passphrases for a Single SSID ?

We are getting ready to deploy a special SSID for handheld devices to be used on.
Is there any way to have multiple passphrases for a single SSID ? The reason I am looking at this is that we may have users who come into one of our offices and may not have gotten/received the email advising of the passphrase change. My hope would be that we could implement Passphrase A when we initially deploy the new SSID and then in say 3 months, change the password. We would like to leave the Passphrase A active for about a week which should be sufficient time for them to change it and then we could delete Passphrase A, leaving only Passphrase B active. In WEP there was something like this but I dont see this as an option in WPA2. Unfortunately with some of the devices that I have looked at, WPA2 Enterprise isnt an option, so that is why I am looking at things from this perspective.
Any suggestions would be appreciated.
Ron

Hello Ronald,
No you cannot have multiple passphrase or WPA-PresharedKey for the same SSID.
Thank you,
Serge

Multiple VLANs per SSID with local switch

Is it possible to use an 'AP Group' or 'Interface group' to assign multiple VLANs to a WLAN when remote, h-reap APs are in local switch mode?
If not, is there a way to overcome 500 maximum host per VLAN when APs are local switching?
Thanks!

dont think its possible...
I donno if the following config will even work but u can have the hreap APs connected at the remote site to map to different vlans...
Example:
AP1 -- ssid 1 --- vlan 10
AP2 -- said 1 --- vlan 11 and so forth..
Sounds crazy but i ll have to ponder on this a bit more.. Need a pen and paper to draw a quick topology :)...
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Binding multiple VLANs to single SSID on WLC

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