WLC 3504 Controller and AP 2802I-K9 WLAN

[Abdur Rahim]

hi, I have a Cisco 3504 controller and some 2802i AP. I want to change my ISP. So my previous DNS will also be changed. So my question is will it create any problem on my wireless network if I change my DNS. Please help me.

[Leo Laohoo · Accepted solution]

Not really.

Just change the DNS field in each of the Dynamic Interface.

[Abdur Rahim]

So I can just use the new ISP DNS or Google DNS. Both will work fine. What do you say?

[Leo Laohoo]

Yes.  

[Flavio Miranda]

Hi

 It will not. The DNS is  handed off to clients by DHCP server. As soon as you change your DNS, you need to update your DHCP server with your new DNS. The DHCP server will inform this new DNS to clients when they renew the IP address. This is true for Wired and Wireless Clients.