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I have to connect wifi hotspots on cisco catalyst ports of cisco 3650. The wifi controller is connected on 2 ports, because it delivers 2 wifi vlans (6 and 40). The hotspots must receive an IP from the DHCP controller on VLAN 40 (untag) and deliver this VLAN to end devices, and also deliver the VLAN 6, which has his own DHCP.

I configured isolated vlans on the 3650 but have problems. For hotspots, I configured trunk ports which delvers VLAN6 tagged and native VLAN40 untagged, but the hotspots only enable end devices to connect to VLAN6, and don't get an IP from VLAN 40.

SW3650

vlan 50
name MGMT
ip addresse 192.168.50.10 255.255.255.0
vlan 40
name WIFI-SSID1
vlan 6 
name WIFI-SSID2
int gi1/1/1
switchport mode trunk
switchport trunk allowed vlan 1,6,50
switchport trunk native vlan 40
description TO OTHER 3650
int gi1/0/1
description TO WIFI SSID1 ON WF CONTROLLER
switchport mode access
switchport access vlan 40
int gi1/0/2
description TO WIFI SSID2 ON WF CONTROLLER
switchport mode access
switchport access vlan 6
int gi1/0/10
description TO HOTSPOT
switchport mode trunk
switchport trunk native vlan 40
switchport trunk allowed vlan 6
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    Please edit your question to include the configuration of your WLC and of the 3650. Use the preformatted { } option. It's impossible to tell where you may have gone wrong, and just guessing is off-topic here.
    – Ron Trunk
    Aug 29, 2023 at 17:32
  • Hi, thank you. I edited the topic. Regards.
    – AnthonyS
    Aug 30, 2023 at 8:47
  • Is it possible to reopen this topic please ? I have no other technical information to communicate (as I don't have control on the WLC, which is managed by the WF provider), and the hotspots are Ubiquiti Unify branded.
    – AnthonyS
    Aug 30, 2023 at 9:29
  • Change your int gi 1/0/10 to switchport trunk allowed vlan 6,40.
    – Ron Trunk
    Aug 30, 2023 at 12:20
  • For equipment to be on topic here, the manufacturer must offer paid support. Sadly, Ubiquity does not. Since you don't manage the controller or access points (not hot spots), there's not much you can do. I suggest you contact your wireless provider for assistance.
    – Ron Trunk
    Aug 30, 2023 at 12:21

1 Answer 1

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Found what was th issue. I had to put native VLAN to all trunks between switches concerned.

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  • You only need to use a native (untagged) VLAN towards the WLC if you can't get it to accept tagged VLANs. No need to run it untagged between switches.
    – Zac67
    Oct 19, 2023 at 14:31

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