https://community.cisco.com/t5/wireless/source-interface-vlan-config-is-required-at-this-c9800/m-p/4419215#M230416 <P>Is your plan to add vlans or add SVI’s. If you are just trunking vlans, then just add the vlans like you would do on a switch from the cli.&nbsp;</P> Wed, 16 Jun 2021 18:08:46 GMT Scott Fella 2021-06-16T18:08:46Z https://community.cisco.com/t5/wireless/source-interface-vlan-config-is-required-at-this-c9800/m-p/4419161#M230414 <P>Hi WLC C9800 need to add several vlans. I am not sure Source-interface vlan is required for dhcp function or something else. Please see the below picture. If we do not configure it, what would happen? Thank you</P><P>&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Capture.PNG" style="width: 462px;"><img src="https://community.cisco.com/t5/image/serverpage/image-id/122911i11A045A9E79FCD4D/image-size/large?v=v2&amp;px=999" role="button" title="Capture.PNG" alt="Capture.PNG" /></span></P> Mon, 05 Jul 2021 20:27:39 GMT https://community.cisco.com/t5/wireless/source-interface-vlan-config-is-required-at-this-c9800/m-p/4419161#M230414 Leftz 2021-07-05T20:27:39Z https://community.cisco.com/t5/wireless/source-interface-vlan-config-is-required-at-this-c9800/m-p/4419215#M230416 <P>Is your plan to add vlans or add SVI’s. If you are just trunking vlans, then just add the vlans like you would do on a switch from the cli.&nbsp;</P> Wed, 16 Jun 2021 18:08:46 GMT https://community.cisco.com/t5/wireless/source-interface-vlan-config-is-required-at-this-c9800/m-p/4419215#M230416 Scott Fella 2021-06-16T18:08:46Z