Hi
IPhone can get IP address on 5.0 while they can not get IP address on 6.0. From a packet capture, both DHCP nack and ack are sent from dhcp server in our topology. (Please don't notice much why nack is sent. It makes the thing complex.) DHCP server sends “nack” and “ack” in order toward the controller. So nack is sent faster than ack for IPhone on 6.0 all the time, so they CANNOT get IP address. However, ack is sent faster than nack on 5.0, so they can luckily get IP address.
That is, the controller changed the order from “ack to nack” on 5.0 when passing through even though the server send “nack to ack” in order. This is our concern and my customer persists.
Can anyone have any idea why 5.0 changes from nack->ack order to ack -> nack order all the way to the IPhone side?
I just want to know the difference between 5.0 and 6.0 in this point.
Nack is broadcast and Ack is unicast. Dose this difference relate to that?
You may see the attahced packet capture on 6.0. It is captured on controller egress port to the client side.
OAW4504
AP105
MAC authentication
Regards
Simon