Supernet on a AIR-CT5508-K9 Wireless LAN Controller

[Clyddon]

I was wondering if a AIR-CT5508-K9 Wireless LAN Controller can handle super netting? If it does is there anything I have to do to the NAT. I have been looking at several documents with no information on this. I am trying to gain more addresses on my Guest Wi-Fi with out doing any more harm to the network. The internal DHCP scope is already set to a 1 hour lease but still running out of addresses within an 1 hour after the business opens. Any advice would be appreciated. 

[Flavio Miranda]

Hi @Clyddon

One hour lease is too short. Cisco recommend 4 and I´d recommend 8. There´s no reason for that much IP renew.

 I dont know any limitation on WLC mask. I already deployed WLC with /16 with no problem.

 You can create a new scope and try larger IP range and then put it in production.

-If I helped you somehow, please, rate it as useful.-

[patoberli · Accepted solution]

First of all, edit your virtual lan interface on the WLC and change the subnet mask to a /22 (to quadrupple your current pool). Once you have done that (and made sure all other routers, firewalls and NAT devices are updated to the new range) you can edit your DHCP pool and use the mask 255.255.252.0 with the network also adjusted to the new range.

I didn't check if the .77. you currently use is the first for the /22 or if you have to start .76 too. Make sure of this first.