# Cisco Wireless LAN Controller (WLC) Basic Configuration **URL:** \ **Category:** Lessons Discussion\ **Created:** [October 21, 2019, 2:47pm UTC](https://forum.networklessons.com/t/cisco-wireless-lan-controller-wlc-basic-configuration/8604 "2019-10-21T14:47:13Z")\ **Posts on this page:** 1\ **Showing post:** 23
**Author:** ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)\ **Post date:** [January 17, 2021, 10:46am UTC](https://forum.networklessons.com/t/cisco-wireless-lan-controller-wlc-basic-configuration/8604/23 "2021-01-17T10:46:35Z")
Hello Marcin Take a look at this response: > [@WLC connection lost when switches trunk](https://forum.networklessons.com/t/wlc-connection-lost-when-switches-trunk/13335/2): > > Hello Marcin There could be several things that are going on here. Initially, you are able to access the DHCP server (since the laptop obtains an IP address) and the WLC from the laptop since they are on the same subnet and same VLAN. Now when you introduce new VLANs, you must ensure that each VLAN has its own IP addressing space, that is, a defined subnet, and that the DHCP server is providing IP addressing information for all of these subnets. You must also ensure that the devices you want… I hope this has been helpful! Laz --- _[View the full topic](https://forum.networklessons.com/t/cisco-wireless-lan-controller-wlc-basic-configuration/8604)._