Aironet 1040 WAP Issue

[dcgtechnologies]

I have two different VLan's for this Access Point. I have a switch port 47 on a 3750X POE Switch configured per below:

interface GigabitEthernet1/0/47
switchport access vlan 10
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport trunk allowed vlan 10,40
switchport mode trunk
no lldp transmit

no lldp receive

The VLAN SSID is set to VLAN40 and should be setup for that VLAN only, but it pulls an IP Address on DHCP server that is on VLAN10, which is the main infrastructure LAN. Instead it going to VLAN10 when I have a DHCP server on VLAN40 and I have two other VLAN's 20 and 30 working just fine, those are on a Aironet 3802i and they pull from there DHCP Server just fine on there respective VLAN's with no issue. So what would be the problem on the 1040 and why would it automatically go to VLAN10 instead of going to VLAN40. Is there something wrong in my switch config? I know my SSID and WAP config is good, but 100% sure what to check on the 1040 and any ideas would be appreciated. Thank you.

[Sandeep Choudhary]

Try to change the switchport config and try again:

interface GigabitEthernet1/0/47
switchport access vlan 10
switchport trunk encapsulation dot1q
switchport trunk native vlan 10 40
switchport trunk allowed vlan 10,40
switchport mode trunk
no lldp transmit

no lldp receive

Regards

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[dcgtechnologies · Accepted solution]

That is perfect, but the only thing I had to do was to put a line back in and fix the native vlan. See below;

interface GigabitEthernet1/0/47
switchport access vlan 10 - This needed to be added back in to access the gateway on VLAN10
switchport trunk encapsulation dot1q
switchport trunk native vlan 10 40 - The only line I had to fix. 
switchport trunk allowed vlan 10,40
switchport mode trunk
no lldp transmit

no lldp receive

Thank you for your help. This is good stuff.