I should know this and maybe I am over thinking the issue but I will explain
I have 3 sites and 1 controller.
We are not using H-REAP.
What is the best way to seperate the sites on the controller so each site has its own RRM setup.
I thinks using H-REAP groups is the best however I am getting confused.
The issue I am seeing is all aps are on max power and I am assuming it as it is one large RF domain at present with no segregation it sees the distance between sites as a coverage hole and goes to max power.
You are most correct that these H-REAP AP's will not likey participate in RRM so you will require manual adjustments.
Because of the fact that many remote deployments have only a small handful of H-REAPs, full Radio Resource Management (RRM) functionality might not be supported at each H-REAP site. Full RRM code is present in the H-REAP, but the Transmit Power Control (TPC) algorithms in RRM are not triggered until four or more access points are within range of each other. So, some H-REAP installations might never power their radios down.. As such, without ever being able to power down their radios in the first place, H-REAPs do not adjust transmit power upward to compensate in the event of a coverage hole detection.
Note: The 802.11a Cisco Radio supports five transmit power levels: 1 = Maximum
transmit power level allowed per Country Code setting, 2 = 50% power, 3 = 25%
power, 4 = 6.25 to 12.5% power, and 5 = 0.195 to 6.25% power.
Each AP reports an RSSI-ordered list of all neighboring APs. Provided an AP has three or more neighboring APs, the RF Group Leader applies the TPC algorithm on a per-band, per-AP basis in order to adjust AP power transmit levels downward such that the third loudest neighbor AP is heard at a signal level of -65dBm (default value) or lower.
Power changes are only made when the third loudest neighbor of a given AP is heard at a signal level higher than the default value of -65 dBm.
Power Level Assignment Method-The TPC algorithm can be configured in one of three ways:
Automatic-This is the default configuration. When RRM is enabled, the TPC algorithm runs every ten minutes (600 seconds) and, if necessary, power setting changes will be made at this interval. ****This is a display-only field and cannot be modified.****
Many thanks, been doing some more investigation, tuning the RRM algoritm to -75dBm is recommended as the thinking is that -65 is too hot.
Im OK with the H-REAP however what I have found as the client has MPLS and has not used H-REAP to segregate his areas, which is fine, is that if the PAs cannot here another ap at -85dBm sub groups may form like clusters within the RF group.
My understanding is this building 1 all aps can see neighbouring aps so they form a group, As thenext building cannot see any of these ap at -85dBm they form a subgroup and manage their RF independently of the group in the fist building.
I dont know if there is any visibility of this a my lab wont scale to that! However it makes sense it would just be nice to see.
Oh the source for this is the troubleshooting WLCs book, great read.
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