4402 and H-Reap

Suppose I have a 4402 installed on a campus and have an internal WLAN and a guest WLAN.  Now I want to install some access points at a branch office.  Now I have been told that H-Reap is the way to go.  But I want to keep the same SSID and Security across both sites.  Do I enable H-Reap on my original WLAN configuration but only apply H-Reap to the the access points at the branch office.
I'm also trying to slip this in on a running network but an nervous that all the APs wil reboot.  I guess I'm just unclear since I can't find an configuration example where both a local and remote locations are involved.
Any insights?

Richard,
I checked my config and don't have DHCP server override configured on the Advanced tab of the WLAN. I do have H-REAP Local Switching and Learn Client IP Address checked on the same tab.
On the AP configuration under the H-REAP tab, I selected VLAN support and used the VLAN that the remote AP's IP address is configured for as the Native VLAN. I then mapped the SSID to the remote VLAN under VLAN Mappings as.
Native VLAN 10
SSID: WLAN1  VLAN: 73
SSID: WLAN2  VLAN: 74
The ASA would need to be set up to trunk vlans 10, 73, and 74 on an 802.1q trunk with vlan 10 as the native vlan.
I believe you already have these settings, but wanted to let you know what worked for me.
NOTE: I did have an issue recently with a centrally switched WLAN. I was getting IP addresses from the subnet that the AP interface was configured on. I'm not sure if the DHCP traffic was being switched locally at the AP or if it was getting it through the WLC. Under WLAN, I had the correct interface chosen. Reboots didn't fix the issue. I had to select a different interface click apply and then click the correct interface again and click apply to get it working correctly again. This is not the same issue you are seeing, but does show that the WLC can be particular at times.
Let me know if there are any other parts of the config you would like me to compare to my setup. If you attach screen shots of the WLAN and the AP pages, it might help as well.
Thanks,
Mark

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