Cisco Aeronet 2702I trunk to Cisco SG500

[Declan Connor]

Hi

I would really appreciate if anyone can help me with this issue.

I have a Cisco Aironet 2702I on which I have loaded the autonomous IOS image. This AP is connect to a Cisco SG500-28P switch, I am having difficult establishing communications between the AP and the Switch.

The Ethernet port of the AP is configured as below.

dot11 vlan-name CORP-GUEST vlan 4
dot11 vlan-name CORP-WIFI vlan 3
!
interface GigabitEthernet0
 no ip address
 no ip route-cache
 duplex auto
 speed auto
!
interface GigabitEthernet0.3
 encapsulation dot1Q 3 native
 no ip route-cache
 bridge-group 1
 bridge-group 1 spanning-disabled
 no bridge-group 1 source-learning
!
interface GigabitEthernet0.4
 encapsulation dot1Q 4
 no ip route-cache
 bridge-group 2
 bridge-group 2 spanning-disabled
 no bridge-group 2 source-learning
!
interface BVI1
 ip address 192.168.1.201 255.255.255.0
!
ip default-gateway 172.25.3.254
!
bridge 1 route ip

The port on the switch is configured as follows(Commands different to catalyst)

vlan database
default-vlan vlan 3
vlan database
vlan 4-5
!
interface gigabitethernet1/1/1
 switchport trunk allowed vlan add 4
 switchport default-vlan tagged
!

I have other devices on this switch the use both vlans and function correctly however I cannot ping from this AP to the switch or vice versa.

Thanks

[Declan Connor]

Just an update to this, it is only in vlan 3 that I cannot communicate with the AP, vlan 4 which is the CORP-GUEST wifi works.

I also noticed a typo in the first message the default gateway should have been 192.168.1.254

[Declan Connor]

For anyone who experiences this issue after speaking with a Cisco engineer he explained that the AP will always send its management traffic untagged, so the solution for me was to change the switch configuration as follows, the switchport mode was set to general and the pvid of this port was set to 3.