Multiple Vlans Per SSID

[steve switzer]

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

[Nicolas Darchis]

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

[Tiago Antunes]

Steve,

Here is an old document but very usefull, you can use it for your 5500 series too, the principle is the same.

http://www.cisco.com/en/US/products/ps6366/products_configuration_example09186a00808c9bd1.shtml.

Hope this helps,

Tiago

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[Tiago Antunes]

And a more recent one:

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008076317c.shtml.

Thanks,

Tiago

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