I used AC as a DHCP server for Head Quarter and also for a Remote Branch as in the topology below.
I observed that for remote branch, CAPWAP tunnel is not UP. How can we solve this?
1. I have configured the source for CAPWAP tunnel as 10.10.60.2:
2. I have captured packets and I noticed that AP2 sends A CAPWAP Control-Discovery Request with destination IP 184.108.40.206, instead of the correct IP 10.10.60.2.
When we configure option 43, we need to use the IP of AC in the reverse order, starting with the last octet of the real IP address: 220.127.116.11.
After configuring option 43 using IP 18.104.22.168, CAPWAP tunnel for remote Branch is UP.