2702 Access Point not joining 5508 Controller

[nikey1983]

Hello,

i Have 2702 access point not joining to 5508 controller. both access point and controller are on different VLAN.

Im using code 7.6.130.0 on controller.

I configured DHCP server based on below link using option 43 for APc2700.

http://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/97066-dhcp-option-43-00.html

1 problem: Access point is getting multiple ips from DHCP.

2 problem: no joining to controller.

[Peter Nugent]

If the ap is cycling through IP addresses it cant find the WLC from the IP option 43 configured so tries a new IP to see if it gets better results.

Where is option 43 configured? Windows server? Switch ?

How is it configured?

[nikey1983]

AP is getting multiple ips even before configuring option 43 on DHCP server.

we are using Windows 2008 R2 for DHCP server. plz find attached files for config of option 43.

[Scott Fella]

I have always used hex for the ip address as shown in this document:

http://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/97066-dhcp-option-43-00.html#anc9

I prefer to also use DNS than option 43

cisco-capwap-controller.<localdomain> point this to your WLC management ip.

-Scott

[Peter Nugent]

Makes sense its grabbing IP addresses before you add option 43 as it wont find the WLC so will keep renewing IPs.

Thats where we differ Scott, I prefer option 43 since homing aps to a WLC the other side of the world. Each has advantages but it will be an option 43 issue.

[Scott Fella]

Peter,

My preference is really due to option 43 working properly or not, especially when you have to provide a doc to a customer and another team has to do the work.  I actually use ip forwarding in most cases since the network team is whom I work directly with.  Less hassle and quicker to get the AP's joined:)

-Scott

[ajc]

Could you post the messages on the AP from CLI?. One question, do you have 1 DHCP Server or 2 servers as a cluster?