I have a cisco 1142 AP connected to a Cisco 2960 switch which is connected to a Fortinet Firewall that is the DHCP Server
On the firewall I have configured 3 vLans and have 3 SSID's on the cisco. I have configured the firwall as a DHCP server for the 3 vlans and when connecting to any of the vlans I successful obtain a dhcp lease from the fortinet firewall.
The trouble I am having now is that I have created a 4th vLan and labelled it vlan5 both in the Cisco AP and the Fortinet Firewall. I have set up a DHCP server for this vlan however whenever I connect I am getting a self assigned ip addressed.
I believe I have missed something out in the Cisco AP, I have defined the vlan there as vlan5 I am not sure what I am msising and why I am not getting dhcp like I am with the other SSID's
You'll need to shut down your port channel port. According to your configuration, you should have a PO1 interface. That interface should be shut down on one side, add your vlan 5, bring the port channel up. Do this for both switches and your etherchannel should come back up. To see that you can do a "show etherchannel summary" after bringing up both port channels on both sides.