H-REAP maximum RTT requirement?

Question

Our wireless controllers & WiSM's are deployed centrally.
We set up all our LWAPP AP's in H-REAP mode to take advantage of local switching, so that clients can access local resources w/o having to traverse all the way to the WiSM's and then back to the remote sites.
One WiSM cluster is deployed in the east coast, and one in the West Coast, because we were told the RTT for H-REAP should be <100ms.
We were told as long as we increase the EAP timer, H-REAP would work coast to coast.
My questions are:
Has anyone done it?
If it's true and works, exactly what variables and parameters should we set in terms of EAP?
(WISM) config>advanced eap ?
advanced eap ?
eapol-key-timeout                          Configures EAPOL-Key Timeout in seconds.
eapol-key-retries                             Configures EAPOL-Key Max Retries.
identity-request-timeout             Configures EAP-Identity-Request Timeout in seconds.
identity-request-retries                Configures EAP-Identity-Request Max Retries.
key-index                                            Configure the key index used for dynamic WEP (802.1x) unicast key (PTK).
max-login-ignore-identity-response Configure to ignore the same username count reaching max in the EAP identity response
request-timeout                              Configures EAP-Request Timeout in seconds.
request-retries                                 Configures EAP-Request Max Retries.

Answer 1

Hi John,
Good news!
The support for the number of H-Reap AP's increased to 8 in the WLC 4.0.206.0 Release :)
These additional changes are available in controller software release 4.0.206.0:
•Client roaming with multicast packets is now supported.
•Up to 10 access points can be concurrently upgraded from the controller.
•***Hybrid REAP can now be used with up to eight access points.
From these release notes;
http://www.cisco.com/en/US/docs/wireless/controller/release/notes/cont402060rn.html#wp201506
Hope this helps!
Rob